Prof. Pravin Khandve | Prof Ram Meghe College of Engineering and Management Badnera (original) (raw)

Papers by Prof. Pravin Khandve

The International Conference on scientific innovations in Science, Technology, and Management

We know that every structure is designed for a specific life period, generally 100 years. The exi... more We know that every structure is designed for a specific life period, generally 100 years. The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings. Therefore it becomes essential to demolish the building. Demolition is the tearing-down of buildings which involves taking a building apart while preserving the valuable elements for re-use. There are various methods of demolition. The building is brought down either manually or mechanically depending upon the method used for demolition of buildings. Equipments used for demolition work are hammers, rammers, excavators, bulldozers, wrecking ball and the explosives used are dynamites and detonators etc. which is generally preferred for tall buildings. The various steps involved before the demolition process includes surveying of the demolition site, removal of hazardous material and safety precautionary measures. The study also includes the precautionary measures regarding ma...

Groundwater is one of the most important sources of drinking water in rural area of India, and in... more Groundwater is one of the most important sources of drinking water in rural area of India, and in urban area maximum of domestic water is procured from ground water. Therefore India is largest extractor of ground water in the world. When ground water is used for drinking purpose, contamination in groundwater is not looked after seriously. Though groundwater at shallow depth is considered as most suitable for domestic use, but due to continuous extraction of groundwater in last decade in uncontrolled manner and groundwater level gone much deeper in aquifer. The quality of groundwater in deeper aquifer varies from place to place and contamination is becoming more concentrated. As per Central Groundwater Board survey, in 387 districts in various states has contaminated groundwater containing arsenic, fluoride, nitrate and iron. In Maharashtra most of the districts exceeds in Nitrate contamination above permissible limit of 45 mg/l. Because of this government has banned the villagers to consume groundwater from such contaminated hand pumps. & tube wells. In India for increasing agricultural production huge amount of fertilizers up to 14% of global total is consumed, therefore Nitrate contamination in groundwater is increasing day by day. Concentration of nitrate above 50 mg/l in drinking water generate various health implications such as infant mortality, spontaneous abortion, birth defects, abdominal pain, diarrhea, vomiting, changes in immune system and methemoglobinemia. Because of various sources of nitrate contamination occurring in groundwater Nitrate removal is one of the emerging challenge. There are various methods of removal of Nitrate from wastewater as well as from drinking water. Distillation, reverse osmosis, ion exchange, electro dialysis, blending, chemical denitrification are the in-home methods for removal of nitrate from drinking water. With the advancement in water treatment technologies, adsorption using activated carbon, carbon nanotubes, biological nitrogen and phosphorus removal, membrane techniques are also used now days in many places. Catalytic denitrification, electroctalytic reduction for denitrification, denitrification using membrane bioreactor, combined ion exchange & membrane bioreactor for denitrification, denitrification using nanofilteration are some of immerging technologies. Reverse osmosis, ion exchange, distillation are the method of nitrate removal requiring high initial cost as well as maintenance cost. On the other hand biological denitrification is promising technology widely used for nitrate removal from municipal wastewater. Despite the development in these technologies, a need remains for a low cost, low maintenance, efficient method to treat nitrate contaminated groundwater.

Reviews in Environmental Science and Bio/Technology, 2010

International Journal of Research in Engineering and Technology, 2016

International Journal of Science and Research (IJSR), Mar 5, 2016

Cost overruns have become issues of serious concern in construction industry. These overruns have... more Cost overruns have become issues of serious concern in construction industry. These overruns have detrimental effect on the national economy. Cost overruns have many reasons/factors which are not taken into consideration at the time of planning resulting into delays and cost increases. In the present study, we have studied literature and identified those factors influencing cost overruns. The primary findings emanating from the study revealed that empirical studies have identified a number of important factors which cause projects cost overruns.These factors have been categorized in different groups depending on their orientations. It is found that, understanding fundamentals of such factors is important role of construction manager for avoiding or minimizing cost overruns and better cost performances.

Climate change is a change in the statistical distribution of weather over periods of time that r... more Climate change is a change in the
statistical distribution of weather over periods
of time that range from decades to millions of
years. It can be a change in the average
weather or a change in the distribution of
weather events around an average. Climate
change may be limited to a specific region, or
may occur across the whole Earth. It can be
caused by recurring, often cyclical climate
patterns .
In recent usage, especially in the
context of environmental policy, climate
change usually refers to changes in modern
climate. It may be qualified as anthropogenic
climate change, more generally known as
"global warming" or "anthropogenic global
warming" (AGW).

The atmosphere's energy, which determines weather and climate, is derived primarily from visible ... more The atmosphere's energy, which determines weather and climate, is derived primarily from visible solar radiation absorbed by the earth's surface and atmosphere. The absorption of that energy tends to raise the temperature at the surface.The earth's surface maintains its thermal balance by radiating energy back to space at longer wave lengths. Carbon dioxide in the atmosphere absorbs incoming visible radiation, but in too small amounts. However, carbon dioxide is virtually opaque to some long-wave radiation that is emitted by the earth's surface. Thus, when carbon dioxide concentrations increase, heat loss through radiation from the surface is reduced. Rising CO 2 levels in the atmosphere is responsible for more global warming than the rise of all the other greenhouse gases combined. The global warming crisis cannot be cracked or solved without a focus on CO 2 and the representation of the effect of CO 2 on the climate in terms of the total amount of greenhouse gases produced i.e. Carbon Footprint which is measured in units of carbon dioxide. Many actions generate carbon emissions, which contribute to accelerating global warming and change. By measuring carbon footprint for each source of CO2 we can more readily take effective action to shrink carbon footprint, there by minimizing it's effect on climate. This paper emphasis on various aspects of carbon footprint and it's need, sources of CO 2 , causes of CO 2 emission, measurements of CO 2 emission and methods to reduce carbon footprint.

An alternative approach to lecturing is interactive lecture. In some literature, interactive teac... more An alternative approach to lecturing is interactive lecture. In some literature, interactive teaching is forwarded as a means to increase the effectiveness of lectures. In traditional method of teaching by taking lectures only knowledge and information is delivered by lecturer but effectiveness of learning by student cannot be insured. One of the methods to insure effective learning by student is involving them in Interactive teaching and learning environment. Some study results suggest that students may learn as much in interactive lectures compared with traditional lectures, but a traditional lecture may also result in active student involvement. Interactive lecturing involves an increased interchange between teachers, students and the lecture content. The use of interactive lectures can promote active learning, heighten attention and motivation, give feedback to the teacher and the student, and increase satisfaction for both. This paper describes general strategies that can promote interactivity during lectures as well as some of interactive techniques that can be used in class of around 60 students. In some literature much has been written about effective lecturing and presentation skills in engineering education but little has been written about the benefits and strategies of interactive lecturing for engineering teachers. The aim of this paper is to discuss common fears and concerns about using this method of teaching, to describe the advantages and indications for interactive lectures, to outline some of interactive techniques that can be incorporated into engineering teaching at all levels.

Blended learning method refers to " mixing of different learning environments ". It combines trad... more Blended learning method refers to " mixing of different learning environments ". It combines traditional face-to-face classroom methods with more modern computer-mediated activities using internet and other advanced technology. Traditional teaching method is most popular method of teaching in Indian school and colleges. Traditional teaching is a must where there is face to face interaction and cannot be eliminated from Indian education culture. Online learning, web based learning, intelligent tutor systems are the new technologies in education. Online learning has unique abilities to provide students with enriched learning experiences, to extend learning beyond the school day, and to support more successful differentiated learning strategies that personalize students' educational experiences. Web based learning has the advantage of learning through animations, multimedia, videos and chats etc. Blended learning is the teaching practice that combines teaching methods from both face-to-face and online learning is an established. The objective of this paper is to explain basics of blended learning, elements and procedure for blended learning, benefits, limitations and challenges for blended learning. While some predict that online classrooms will replace physical classrooms, some expertise suggests that blending online and in-person instruction is more likely to succeed in developing countries. However, very little research has actually been done on the effects of online education or blended learning in Indian continent education environments. In this paper description of blended learning initiative for future learning environment are discussed. Some digital tools to support blended learning, strategy to be adopted for incorporation of blended learning and recommendations for policy making are also given.

Using information technology, computerized modeling and analysis have been developed simultaneous... more Using information technology, computerized modeling and analysis have been developed simultaneously in several related fields. The present status would not have been achieved without close interaction between various fields such as utility networks, computer capability, advancement in fluid dynamics, mathematical modeling, programming for complex mathematical problems, optimization techniques, image processing, computer science, need of intensive design through 3D visualization. The Computational Fluid Dynamics (CFD) technology correlates all this disciplines to each other for rapid interaction and result creation. The CFD technology is rapidly becoming a standard tool for analysis and design of various technology based products. The CFD technology is used to assist design engineer by indicating various alternatives in design and development and conservation design to protect the environment and by modeling the potential outcomes of a series of conditional scenarios. The model is analyzed and information is compiled for final optimum design parameters using CFD. Based on this information, product or system is established in view of economy, efficiency and Environment Protection. This paper gives particular emphasis to highlight the applications of CFD in environmental engineering and some other fields. It is to show how CFD is one of the most important and useful tool for production and manufacturing of various technological innovations with environmental integrity. COMPUTATIONAL FLUID DYNAMICS (CFD) CFD is a computational technology that enables us to study the dynamics of things that flow. Using CFD, we can build a computational model that represents a system or device that we want to study. Then we apply the fluid flow physics and chemistry to this virtual prototype, and the software will output a prediction of the fluid dynamics and related physical phenomena. Therefore, CFD is a sophisticated computationally-based design and analysis technique. CFD software gives us the power to simulate flows of gases and liquids, heat and mass transfer, moving bodies, multiphase physics, chemical reaction, fluid-structure interaction and acoustics through computer modeling. Using CFD software, we can build a 'virtual prototype' of the system or device that we wish to analyze and then apply real-world physics and chemistry to the model, and the software will provide us with images and data, which predict the performance of that design. [4] A common engineering approach to such complex problems is to replace the problem with a number of smaller less complex problems and that is the basic principle of CFD Technology. PROCESS AND METHODOLOGY OF CFD Preprocessing, Obtaining a flow solution and Post processing are the three distinct steps in CFD process. Some basic procedure is followed in CFD technique as given below. i) The geometry (physical bounds) of the problem is defined. ii) The volume occupied by the fluid is divided into discrete cells (the mesh). The mesh may be uniform or non uniform. iii) The physical modeling is defined – for example, the equations of motions + enthalpy + radiation + species conservation iv) Boundary conditions are defined. This involves specifying the fluid behavior and properties at the boundaries of the problem. v) The simulation is started and the equations are solved iteratively as a steady-state or transient. vi) Finally a postprocessor is used for the analysis and visualization of the resulting solution. [3]

Using information technology, computerized mapping and spatial analysis have been developed simul... more Using information technology, computerized mapping and spatial analysis have been developed simultaneously in several related fields. The present status would not have been achieved without close interaction between various fields such as utility networks, cadastral mapping, topographic mapping, thematic cartography, surveying and photogrametery remote-sensing, image processing, computer science, rural and urban planning, earth science, and geography, The GIS technology correlates all this disciplines to each other for rapid interaction and result creation. The GIS technology is rapidly becoming a standard tool for management of natural resources. The GIS technology is used to assist decision-makers by indicating various alternatives in development and conservation planning to protect the environment and by modeling the potential outcomes of a series of scenarios. As any task begins and ends with the real world environment. Data are collected about the real world environment and its various parameters. After this, data are analyzed and information is compiled for decision-makers. Based on this information, actions are taken and plans implemented in view of environment protection and sustainable development. The applications or uses for a GIS are endless, wherever spatial features need to be modeled and analyzed. GIS are now used extensively in government, business, defense and research for a wide range of applications including environmental systems. This paper gives particular emphasis to the applications of GIS in environmental engineering such as-mapping and monitoring of water pollution, monitoring environmental effects of man's effects, assessing the drought impact, determination of water boundaries and surface water areas, mapping of floods and flood plains and many such environmental applications.

With recent infrastructural development in urban India, trend of using paved surface around the b... more With recent infrastructural development in urban India, trend of using paved surface around the building or on road sides is increasing. Traditional Concrete paving bocks are the most suitable, economical and locally available material for such paving surface. They are widely used on footpaths, garden pathways, courtyard paving, bust stand sheds, parking areas and in industry for working area. At the same time, amount of construction waste generated is also increasing with increased infrastructural development. Marble stone industry waste is one of the construction wastes which is left unused by industries or only used for filling low lying areas etc. In this study attempt has been made to use marble stone industry waste as replacement for course aggregate used for manufacturing of traditional concrete paving blocks. Varying percentage of marble stone waste aggregates is considered and paving blocks are tested for water absorption, compressive strength and splitting tensile strength. The results shown that maximum 70 % of replacement of traditional aggregate with marble stone waste aggregate is possible for optimum results. In this paper material used for the study, methodology adopted, results of various tests and summery results are given. Using waste material is reducing the cost of manufacturing and also solving the problem of disposal of construction waste and thus helping in protecting environment.

Civil engineering not only deals with construction of various structures but also works for their... more Civil engineering not only deals with construction of various structures but also works for their maintenance. Present era demands efficient and sustainable methods for any job. In this paper brief about conventional repair techniques are explained and the methodology of special repair techniques is discussed. Paper highlights the potential of newer philosophy generated by the use of chemicals and admixtures. Use of new chemicals is very well explained for various components of building in order to mitigate the ill effects of dampness and so on. In this paper procedure adopted for special repair techniques using special product material for grouting, waterproofing, protective coatings and chemical adhesive are discussed. Guidelines to evaluate structure under consideration, Testing and investigation procedure, requirement of site preparation, cleaning systems, rectifying measures are described. Special Technique executions for non structural repairs and structural repairs with require Management approach special repair work is also given. This will certainly help in enhance the performance of civil engineering project where similar kind of repair and maintenance work is require to be executed.

We know that every structure is designed for a specific life period, generally 100 years. The exi... more We know that every structure is designed for a specific life period, generally 100 years. The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings. Therefore it becomes essential to demolish the building. Demolition is the tearing-down of buildings which involves taking a building apart while preserving the valuable elements for re-use. There are various methods of demolition. The building is brought down either manually or mechanically depending upon the method used for demolition of buildings. Equipments used for demolition work are hammers, rammers, excavators, bulldozers, wrecking ball and the explosives used are dynamites and detonators etc which is generally preferred for tall buildings. The various steps involved before the demolition process includes surveying of the demolition site, removal of hazardous material and safety precautionary measures. The study also includes the precautionary measures regarding machinery or equipments, scaffolding, public safety and worker safety. Various strategies of demolition waste have been reported in literature for implementing good practices for demolition of buildings.

The quantity of solid waste produced in city depends on the type of the city, its population, liv... more The quantity of solid waste produced in city depends on the type of the city, its population, living standards of the residents and degree of commercialization, industrialization and various activities prevailing in the city. Due to rapid growth of population in Amravati municipal corporation area and changing life styles has resulted in increased waste generation. Consequently, waste management has become a key issue needing to be addressed. Amravati city generates about 184.90 tons municipal solid waste per day. The various Solid waste streams in Amravati city include municipal solid waste (households, commercial establishments), biomedical waste (hospitals, dispensaries), industrial waste (industries) and electronic waste (discards from electronic equipments including PCs). Handling of MSW is the responsibility of the Amravati Municipal Corporation (AMC) and Solid waste management strategies adopted by AMC includes management of MSW at compost depot, management of biomedical waste, and implementation of MSW rules 2000. But these present facilities are falling short and hence new Landfill site proposal is sanctioned for AMC. The present paper is based on the study carried out on Solid Waste Management Practice by Amravati Municipal Corporation for Amravati City. The outline of existing situation of solid waste management system, problems associated with the system and the future requirement to handle the up growing situation are discussed.

The quantity of solid waste produced in city depends on the type of the city, its population, liv... more The quantity of solid waste produced in city depends on the type of the city, its population, living standards
of the residents and degree of commercialization, industrialization and various activities prevailing in the city. Due
to rapid growth of population in Amravati municipal corporation area and changing life styles has resulted in
increased waste generation. Consequently, waste management has become a key issue needing to be addressed.
Amravati city generates about 184.90 tons municipal solid waste per day Handling of MSW is the responsibility of
the Amravati Municipal Corporation (AMC) and Solid waste management strategies adopted by AMC includes
management of MSW at compost depot, management of biomedical waste, and implementation of MSW rules 2000.
But these present facilities are falling short and hence new Landfill site proposal is sanctioned for AMC.
With the fast depletion of the conventional resources and the growing awareness and concern regarding the
environmental effects of their utilization, there has been a major thrust in the recent past to identify and develop
alternate energy sources. The present paper is based on the study carried out on Solid Waste Management Practice
by Amravati Municipal Corporation for Amravati City. The outline of existing situation of solid waste management
system, and various possibilities to recover energy from waste are discussed. This paper is an attempt made to find
out various possibilities of recovering energy from the solid waste that is generated per day in the Amravati city.
The waste to energy industry has proven itself to be an environmentally friendly solution to the disposal of
municipal solid waste and the production of energy. Waste-to-energy is now a clean, renewable, sustainable source
of energy. The estimation of energy content of municipal solid waste in Amravati city Municipal Corporation is
discussed in this paper.

The present study involves Solid Waste Management Strategies at Amravati City. The quantity of so... more The present study involves Solid Waste Management Strategies at Amravati
City. The quantity of solid waste produced in city depends on the type of the city, its
population, living standards of the residents and degree of commercialization,
industrialization and various activities prevailing in the city. Due to rapid growth of
population in Amravati municipal corporation area and changing life styles has resulted
in increased waste generation. Consequently, waste management has become a key
issue needing to be addressed. Amravati city generates about 184.90 tons municipal
solid waste per day. The various Solid waste streams in Amravati city include municipal
solid waste (households, commercial establishments), biomedical waste (hospitals,
dispensaries), industrial waste (industries) and electronic waste (discards from
electronic equipments including PCs). Handling of MSW is the responsibility of the
Amravati Municipal Corporation (AMC) and Solid waste management strategies
adopted by AMC includes management of MSW at compost depot, management of
biomedical waste, and implementation of MSW rules 2000. But these present facilities
are falling short and hence new Landfill site proposal is sanctioned for AMC.

The population of mankind is increasing at distressing rate and human is tapping the natural reso... more The population of mankind is increasing at distressing rate and human is tapping the
natural resources to cater his need. The available resources including water and food are falling
shorter to cope up with the need of mankind. To overcome this problem, it is very essential to
conserve the water in many ways and utilize it so that food production should be sufficient to
serve for mankind need at reasonably low cost. To increase the food production from agriculture
land, irrigation is one of the tools to conserve the water and utilize it for agriculture production.
Irrigation of agriculture land is done using various methods such as flow through open channel,
lift irrigation, and drip irrigation etc.
Conventionally on almost all command area of irrigation projects in India, the water for
irrigation is supplied through the network of turnout, sub minor, distributory, branch canal and
main canal. Here, almost 50 % of water is lost during the storage and distribution. There are
many disadvantages of the conventional system of irrigation. Their design overall project
efficiency (OPE) of the conventional system is obliviously low and ranges between 41 to 48 %
only. Actual OPE, it is needless to say, is only 20-35 % in most of the irrigation projects due to
many difficulties and constraints. To improve the overall project efficiency of a project, it is
essential to overcome various reasons and constraints which are responsible for the low
efficiency.
The Pipe Distribution Network (PDN) for irrigation purpose is one of the best solution
for substantially improving the design and actual OPE. The Pipe Distribution Network (PDN) is
the technique of irrigating the command area through the network of HDPE pipes under gravity
flow in place of open channels. This paper describes about the need of PDN system, advantage
and scope of PDN, essential requirement for PDN implementation, general installation guide
lines for PDN, planning and design principles of PDN. The paper also discusses about the
magical improvement in the OPE of an irrigation project by adopting PDN. The paper compares
the percentage increase in efficiency of the project and other parameters for an illustrated project
of Nagthana-2 in Amravati District of Maharashtra.

The International Conference on scientific innovations in Science, Technology, and Management

Reviews in Environmental Science and Bio/Technology, 2010

International Journal of Research in Engineering and Technology, 2016

International Journal of Science and Research (IJSR), Mar 5, 2016

We know that every structure is designed for a specific life period, generally 100 years. The exi... more We know that every structure is designed for a specific life period, generally 100 years. The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings. Therefore it becomes essential to demolish the building. Demolition is the tearing-down of buildings which involves taking a building apart while preserving the valuable elements for re-use. There are various methods of demolition. The building is brought down either manually or mechanically depending upon the method used for demolition of buildings. Equipments used for demolition work are hammers, rammers, excavators, bulldozers, wrecking ball and the explosives used are dynamites and detonators etc which is generally preferred for tall buildings. The various steps involved before the demolition process includes surveying of the demolition site, removal of hazardous material and safety precautionary measures. The study also includes the precautionary measures regarding machinery or equipments, scaffolding, public safety and worker safety. Various strategies of demolition waste have been reported in literature for implementing good practices for demolition of buildings.

The quantity of solid waste produced in city depends on the type of the city, its population, liv... more The quantity of solid waste produced in city depends on the type of the city, its population, living standards
of the residents and degree of commercialization, industrialization and various activities prevailing in the city. Due
to rapid growth of population in Amravati municipal corporation area and changing life styles has resulted in
increased waste generation. Consequently, waste management has become a key issue needing to be addressed.
Amravati city generates about 184.90 tons municipal solid waste per day Handling of MSW is the responsibility of
the Amravati Municipal Corporation (AMC) and Solid waste management strategies adopted by AMC includes
management of MSW at compost depot, management of biomedical waste, and implementation of MSW rules 2000.
But these present facilities are falling short and hence new Landfill site proposal is sanctioned for AMC.
With the fast depletion of the conventional resources and the growing awareness and concern regarding the
environmental effects of their utilization, there has been a major thrust in the recent past to identify and develop
alternate energy sources. The present paper is based on the study carried out on Solid Waste Management Practice
by Amravati Municipal Corporation for Amravati City. The outline of existing situation of solid waste management
system, and various possibilities to recover energy from waste are discussed. This paper is an attempt made to find
out various possibilities of recovering energy from the solid waste that is generated per day in the Amravati city.
The waste to energy industry has proven itself to be an environmentally friendly solution to the disposal of
municipal solid waste and the production of energy. Waste-to-energy is now a clean, renewable, sustainable source
of energy. The estimation of energy content of municipal solid waste in Amravati city Municipal Corporation is
discussed in this paper.

It is an online bi-monthly International journal in the world which publishes research papers, re... more It is an online bi-monthly International journal in the world which publishes research papers, review papers, review articles and short commutations in all aspects of all fields of Chemical Sciences like Organic Chemistry, Green Chemistry, Photochemistry,Inorganic Chemistry, Physical Chemistry, Industrial Chemistry, Biochemistry, Environmental Chemistry, Agricultural & Soil Chemistry, Analytical Chemistry, Polymer Chemistry, Macromolecular Chemistry, Petroleum Chemistry, Forensic Chemistry and Phytochemistry as well as all aspects of Chemical Engineering etc. In the fields of Physical Sciences all Physics including artificial intelligence, neural processing, nuclear and particle physics, geophysics, physics in medicine and biology, plasma physics, semiconductor science and technology, wireless and optical communications, materials science.