Dr.R.C. Chhipa | Suresh Gyan Vihar University (original) (raw)

Papers by Dr.R.C. Chhipa

Inorganic Chemistry Communications, 2010

The reactions of 2,2′-ethylidene-bis(4,6-di-tert-butylphenol) (EDBPH 2) with sodium/potassium and... more The reactions of 2,2′-ethylidene-bis(4,6-di-tert-butylphenol) (EDBPH 2) with sodium/potassium and (n Bu) 2-Mg in tetrahydrofuran (THF), give [(EDBP) 2 Mg][(Na) 2 (THF) 5 ]•THF (1) and [(EDBP) 2 Mg][(K) 2 (THF) 5 ]•THF (2) in high yield. Experimental results show that sodium/potassium complexes 1 and 2 are efficient catalysts for the ring-opening polymerization of lactides. Furthermore, complexes 1 and 2 have slight isotactic selectivity for the ring-opening polymerization of rac-lactide.

Cost overrun in construction projects takes place because of a variety of factors which are assoc... more Cost overrun in construction projects takes place because of a variety of factors which are associated with some types of risks and uncertainties. For the successful delivery of the project it becomes necessary to apply the formal risk management process to manage the risks and uncertainties causing cost overrun for better control on project cost and support in identifying possible solutions to avoid cost overruns in future. In this paper the existing risk management process is described.

Water is the basic unit of life and it is essential element for all living forms and the environm... more Water is the basic unit of life and it is essential element for all living forms and the environment health. Water is the basic unit of life and it is essential element for all living forms and the environment health. Rivers are essential for all living organism on earth.In this study, we screened the point of contamination of pollutants in Chambal river water and their concentration in different season. Most of the time water pollution defined by pollutants and industries waste but microbiological assessment is also important point to find out the contamination level. Microorganism growth are increased in summer and decreased in winter but constantly remain unchanged in all season due to heavy pollution and contamination of nitrates, sulphates, carbonates main medium for microbial growth.Analyzed data clearly revealed that at some places river water is highly polluted but overall river water along Kota City area is moderately polluted by organic as well as inorganic substances. The pollution of Chambal River is associated with the disposal of untreated domestic and sewerage effluents in river directly through so many drains from city area.

Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and ... more Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and sulphuric acid are studied by Mass Loss method in the absence and presence of the extracts of seeds plant Pennisetum glaucum (Pearl Millet). Corrosion relates effects the technologies. Water plays an important role in enhancing corrosion. In this paper the mass loss equation, concludes that corrosion inhibition increased to proportionate concentration of the extract. It has been found that seed extract of plant Pennisetum glaucum is the effective and have high corrosion inhibition efficacy. It was also observed that mild steel is more susceptible in acid like HCl and H2SO4 solution.

Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accor... more Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accordingly Jaipur is the most populated industrial and commercial city of Rajasthan. Most environmental Problem is noise pollution are increased because of number of vehicles are increased and irregular transportation by others sources. The purpose of this study is to determine levels of environmental noise and its impact. In this study, continuous monitoring of noise levels Leq dB (A) during the period of April, 2014 at eleven different locations in the city. On the basis of different locations these sites were classified as commercial, residential, industrial, and silence zones. The researched data explains an enhanced pressure of noise in areas of Jaipur because of increase in number of vehicles and facilities of transportation. Results shows higher sound level in areas of Jaipur as compared with the prescribed limits of Central Pollution Control Board (CPCB).Present paper recommends how ...

Hetero-and homo-metallic aryloxides of coppertll) of the type, Cu[Ta(OAr')612 (1-4) [where OAr' =... more Hetero-and homo-metallic aryloxides of coppertll) of the type, Cu[Ta(OAr')612 (1-4) [where OAr' = 3,5-dimethylphenoxo (1), 3,4-dimethylphenoxo (2), 2,4,6-trimethylphenoxo (3) and-l-chlorophenoxo (4)] and CuCl2_JOAr')x(2,2'-bipy) (5-7) (OAr' = 3, 4-dimethylphenoxo, x = 1 (8), x = 2 (5); 3,5dimethylphenoxo, x = 2 (6); 2,4,6-trimethylphenoxo, x = 2 (7) have been synthesised and characterised

Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accor... more Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accordingly Jaipur is the most populated industrial and commercial city of Rajasthan. Most environmental Problem is noise pollution are increased because of number of vehicles are increased and irregular transportation by others sources. The purpose of this study is to determine levels of environmental noise and its impact. In this study, continuous monitoring of noise levels Leq dB (A) during the period of April, 2014 at eleven different locations in the city. On the basis of different locations these sites were classified as commercial, residential, industrial, and silence zones. The researched data explains an enhanced pressure of noise in areas of Jaipur because of increase in number of vehicles and facilities of transportation. Results shows higher sound level in areas of Jaipur as compared with the prescribed limits of Central Pollution Control Board (CPCB).Present paper recommends how ...

Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and ... more Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and sulphuric acid are studied by Mass Loss method in the absence and presence of the extracts of seeds plant Pennisetum glaucum (Pearl Millet). Corrosion relates effects the technologies. Water plays an important role in enhancing corrosion. In this paper the mass loss equation, concludes that corrosion inhibition increased to proportionate concentration of the extract. It has been found that seed extract of plant Pennisetum glaucum is the effective and have high corrosion inhibition efficacy. It was also observed that mild steel is more susceptible in acid like HCl and H2SO4 solution.

Novel chloro bimetallic a1koxidesof copper(II)ofthe type CICu!AJ(OPr;)4}( 1)have been synthesized... more Novel chloro bimetallic a1koxidesof copper(II)ofthe type CICu!AJ(OPr;)4}( 1)have been synthesized by the interaction of CUC\2 and K!AJ(OPr;)4} in equimolar proportions. The derivative (Pr;O)Cu!Al(OPr;)4} )(2) has been synthesized by the reaction of CuCI2, KOPr; and K!Al(OPr;)4} in 1:1:1 molar ratio. The interaction of chloro bimetallic alkoxides with a number of potassium alkoxides gives mixed derivatives of the type (RO )Cu{AJ(OPr;)4}(3-9). The (Pr;O )Cu!Al(OPr; )4}(2) undergoes alcohol interchange reactions, the facile nature of which is governed by the length and branching of the hydrocarbon chains of alcohols e.g. MeOH, EtOH, PrnOH, BunOH, BusOH, ButOH. The reaction with Bu'Ol-l gives only the mixed bimetallic alkoxides. The products have been characterised by elemental analyses, molecular weights, I.R, electronic spectral and magnetic susceptibility measurements.

Construction industry plays an important role in economic growth and development of any country. ... more Construction industry plays an important role in economic growth and development of any country. It is found that construction projects are facing the problem of risk and uncertainties due to the involvement of various factors because of dynamic and complex behaviour of construction activities. The desired goal of construction projects are not achieved due to these risks and uncertainties and project failure may take place in terms of delay and cost overrun. Cost overrun has become a major problem in construction projects. There are several causes which are responsible for cost overrun such as poor planning, fluctuation in cost of material, delay in procurement of material, poor decision making, changes in design, adverse climatic condition etc. To handle the problem of cost overrun, there are found various risk assessment techniques in literature. Among these techniques fuzzy logic is considered appropriate techniques to tackle the complexity of the construction projects. An exampl...

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using differe... more magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.

A simple, sensitive and precise RP-HPLC method was developed for the determination of aceclofenac... more A simple, sensitive and precise RP-HPLC method was developed for the determination of aceclofenac in tablet dosage form. The RP-HPLC separation was achieved on hypersil C18 column (250 mm, 4.6 mm, 5μm) using mobile phase water: acetonitrile (55:45 v/v) at flow rate of 1 ml/min at ambient temperature. Quantification was achieved with photodiode array detection at 277 nm over the concentration range of 1-10 μm/ml. The method was validated statistically and applied successfully for the determination of aceclofenac.

Asian Journal of Research in Chemistry, 2017

This present work has been carried out to study the enhanced efficiency of chemical precipitation... more This present work has been carried out to study the enhanced efficiency of chemical precipitation treatment for paper mill effluents. After physico-chemical analysis, the chemical precipitation was carried out by using metal salt doses of aluminum chloride, ferric chloride and barium sulphate. The effect of pH and metal salt doses on the precipitation of pollutants was studied. The conditions were optimized in accordance with the removal of pollutants. The removal efficiencies were measured in terms of the reduction in color, total suspended solid (TSS), chemical oxygen demand (COD) and phenols. The pollution reduction has been analyzed and compared with industrial effluent discharge standards as per central pollution control board (CPCB). A comparative study of different metal salts doses of paper mill effluents by the chemical precipitation methods indicated that maximum color reduction, phenol and COD removal was 99.60%, 53.89 and 67.28% respectively for aluminum chloride, barium...

This research paper here to present to examine the adverse effect of dumping of solid waste at di... more This research paper here to present to examine the adverse effect of dumping of solid waste at disposal site on ground water quality at various disposal site at Jaipur city, India. This effect on ground water causes due to the unsystematic or unscientific dumping of solid waste. The water, which already presents in the waste, generates with the biodegradable waste or due to the infiltration of water by rainfall. This water which generates or occurs due to that process pours in the soil and causes contamination with ground water. And that contamination causes the water pollution and changes in the some parameters of the ground water. However, most of the parameters tested fall within WHO recommendation while some are not. The physical and chemical parameters such as temperature, pH, Hardness, Electrical Conductivity, Total Dissolved Solids, Total Suspended Solids were studied using various analytical techniques. To control the further pollution of ground water the open area dumping o...

Global Journal of Environmental Science and Management, 2016

Water is a unique natural resource among all sources available on earth. It plays an important ro... more Water is a unique natural resource among all sources available on earth. It plays an important role in economic development and the general well-being of the country. This study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of Jaipur in pre and post monsoon for public usage. Total eleven physico–chemical characteristics; total dissolved solids, total hardness,chloride, nitrate, electrical conductance, sodium, fluorideand potassium, pH, turbidity, temperature) were analyzed and observed values were compared with standard values recommended by Indian standard and World Health Organization. Most of parameter show higher value than permissible limit in pre and post monsoon. Water quality index study showed that drinking water in Amer (221.58,277.70), Lalawas (362.74,396.67), Jaisinghpura area (286.00,273.78) were found to be highly contaminated due to high value of total dissolved solids, electrical conductance, total hard...

Activated carbon was prepared from the leaves of Azadirachta indica by H3PO4 impregnation method.... more Activated carbon was prepared from the leaves of Azadirachta indica by H3PO4 impregnation method. The adsorption properties of Neem activated carbon were evaluated by Batch Mode adsorption studies. The amount of RO4 removed by NAC2 increases from 47.48 to 107.38 mg/g while increasing the initial concentration from 25 to 100 mg/L. A maximum amount of 94.96 % dye was removed at equilibrium time & at an initial dye concentration of 25 mg/L. This treatment method also enables us to recycle the maximum possible amount of spent carbon. The adsorption studies indicate that Neem activated carbon could be used as a low cost alternative to the commercial activated carbon.

Research Journal of Pharmacy and Technology, 2020

Asian Journal of Research in Chemistry, 2017

Activated carbon was prepared from Azadirachta indica (Neem) leaves by H3PO4 impregnation method.... more Activated carbon was prepared from Azadirachta indica (Neem) leaves by H3PO4 impregnation method. The adsorption property of neem activated carbon was evaluated by treating the dilute solutions of acid violet 49 of different concentrations. The batch mode adsorption studies of neem activated carbon (NAC 2 ) on acid violet 49 indicated that NAC 2 could be effectively and conveniently used as a low cost adsorbent. The amount of dye adsorbed, qt (mg/g) per unit mass of adsorbent was found to increase from 47.92 to 171.64 mg/g with an increase in the initial dye concentration from 25 to 100 mg/L. Further, this treatment method makes it possible to recycle the maximum possible amount of spent adsorbent for further use.

Journal of Drug Delivery and Therapeutics, 2012

Inorganic Chemistry Communications, 2010

The reactions of 2,2′-ethylidene-bis(4,6-di-tert-butylphenol) (EDBPH 2) with sodium/potassium and... more The reactions of 2,2′-ethylidene-bis(4,6-di-tert-butylphenol) (EDBPH 2) with sodium/potassium and (n Bu) 2-Mg in tetrahydrofuran (THF), give [(EDBP) 2 Mg][(Na) 2 (THF) 5 ]•THF (1) and [(EDBP) 2 Mg][(K) 2 (THF) 5 ]•THF (2) in high yield. Experimental results show that sodium/potassium complexes 1 and 2 are efficient catalysts for the ring-opening polymerization of lactides. Furthermore, complexes 1 and 2 have slight isotactic selectivity for the ring-opening polymerization of rac-lactide.

Cost overrun in construction projects takes place because of a variety of factors which are assoc... more Cost overrun in construction projects takes place because of a variety of factors which are associated with some types of risks and uncertainties. For the successful delivery of the project it becomes necessary to apply the formal risk management process to manage the risks and uncertainties causing cost overrun for better control on project cost and support in identifying possible solutions to avoid cost overruns in future. In this paper the existing risk management process is described.

Water is the basic unit of life and it is essential element for all living forms and the environm... more Water is the basic unit of life and it is essential element for all living forms and the environment health. Water is the basic unit of life and it is essential element for all living forms and the environment health. Rivers are essential for all living organism on earth.In this study, we screened the point of contamination of pollutants in Chambal river water and their concentration in different season. Most of the time water pollution defined by pollutants and industries waste but microbiological assessment is also important point to find out the contamination level. Microorganism growth are increased in summer and decreased in winter but constantly remain unchanged in all season due to heavy pollution and contamination of nitrates, sulphates, carbonates main medium for microbial growth.Analyzed data clearly revealed that at some places river water is highly polluted but overall river water along Kota City area is moderately polluted by organic as well as inorganic substances. The pollution of Chambal River is associated with the disposal of untreated domestic and sewerage effluents in river directly through so many drains from city area.

Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and ... more Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and sulphuric acid are studied by Mass Loss method in the absence and presence of the extracts of seeds plant Pennisetum glaucum (Pearl Millet). Corrosion relates effects the technologies. Water plays an important role in enhancing corrosion. In this paper the mass loss equation, concludes that corrosion inhibition increased to proportionate concentration of the extract. It has been found that seed extract of plant Pennisetum glaucum is the effective and have high corrosion inhibition efficacy. It was also observed that mild steel is more susceptible in acid like HCl and H2SO4 solution.

Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accor... more Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accordingly Jaipur is the most populated industrial and commercial city of Rajasthan. Most environmental Problem is noise pollution are increased because of number of vehicles are increased and irregular transportation by others sources. The purpose of this study is to determine levels of environmental noise and its impact. In this study, continuous monitoring of noise levels Leq dB (A) during the period of April, 2014 at eleven different locations in the city. On the basis of different locations these sites were classified as commercial, residential, industrial, and silence zones. The researched data explains an enhanced pressure of noise in areas of Jaipur because of increase in number of vehicles and facilities of transportation. Results shows higher sound level in areas of Jaipur as compared with the prescribed limits of Central Pollution Control Board (CPCB).Present paper recommends how ...

Hetero-and homo-metallic aryloxides of coppertll) of the type, Cu[Ta(OAr')612 (1-4) [where OAr' =... more Hetero-and homo-metallic aryloxides of coppertll) of the type, Cu[Ta(OAr')612 (1-4) [where OAr' = 3,5-dimethylphenoxo (1), 3,4-dimethylphenoxo (2), 2,4,6-trimethylphenoxo (3) and-l-chlorophenoxo (4)] and CuCl2_JOAr')x(2,2'-bipy) (5-7) (OAr' = 3, 4-dimethylphenoxo, x = 1 (8), x = 2 (5); 3,5dimethylphenoxo, x = 2 (6); 2,4,6-trimethylphenoxo, x = 2 (7) have been synthesised and characterised

Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accor... more Jaipur city is a district place in state of Rajasthan, India having population of 35 lakhs. Accordingly Jaipur is the most populated industrial and commercial city of Rajasthan. Most environmental Problem is noise pollution are increased because of number of vehicles are increased and irregular transportation by others sources. The purpose of this study is to determine levels of environmental noise and its impact. In this study, continuous monitoring of noise levels Leq dB (A) during the period of April, 2014 at eleven different locations in the city. On the basis of different locations these sites were classified as commercial, residential, industrial, and silence zones. The researched data explains an enhanced pressure of noise in areas of Jaipur because of increase in number of vehicles and facilities of transportation. Results shows higher sound level in areas of Jaipur as compared with the prescribed limits of Central Pollution Control Board (CPCB).Present paper recommends how ...

Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and ... more Corrosion of Mild steel IS: 432 (Part I)-1982 in various concentrations of hydrochloric acid and sulphuric acid are studied by Mass Loss method in the absence and presence of the extracts of seeds plant Pennisetum glaucum (Pearl Millet). Corrosion relates effects the technologies. Water plays an important role in enhancing corrosion. In this paper the mass loss equation, concludes that corrosion inhibition increased to proportionate concentration of the extract. It has been found that seed extract of plant Pennisetum glaucum is the effective and have high corrosion inhibition efficacy. It was also observed that mild steel is more susceptible in acid like HCl and H2SO4 solution.

Novel chloro bimetallic a1koxidesof copper(II)ofthe type CICu!AJ(OPr;)4}( 1)have been synthesized... more Novel chloro bimetallic a1koxidesof copper(II)ofthe type CICu!AJ(OPr;)4}( 1)have been synthesized by the interaction of CUC\2 and K!AJ(OPr;)4} in equimolar proportions. The derivative (Pr;O)Cu!Al(OPr;)4} )(2) has been synthesized by the reaction of CuCI2, KOPr; and K!Al(OPr;)4} in 1:1:1 molar ratio. The interaction of chloro bimetallic alkoxides with a number of potassium alkoxides gives mixed derivatives of the type (RO )Cu{AJ(OPr;)4}(3-9). The (Pr;O )Cu!Al(OPr; )4}(2) undergoes alcohol interchange reactions, the facile nature of which is governed by the length and branching of the hydrocarbon chains of alcohols e.g. MeOH, EtOH, PrnOH, BunOH, BusOH, ButOH. The reaction with Bu'Ol-l gives only the mixed bimetallic alkoxides. The products have been characterised by elemental analyses, molecular weights, I.R, electronic spectral and magnetic susceptibility measurements.

Construction industry plays an important role in economic growth and development of any country. ... more Construction industry plays an important role in economic growth and development of any country. It is found that construction projects are facing the problem of risk and uncertainties due to the involvement of various factors because of dynamic and complex behaviour of construction activities. The desired goal of construction projects are not achieved due to these risks and uncertainties and project failure may take place in terms of delay and cost overrun. Cost overrun has become a major problem in construction projects. There are several causes which are responsible for cost overrun such as poor planning, fluctuation in cost of material, delay in procurement of material, poor decision making, changes in design, adverse climatic condition etc. To handle the problem of cost overrun, there are found various risk assessment techniques in literature. Among these techniques fuzzy logic is considered appropriate techniques to tackle the complexity of the construction projects. An exampl...

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using differe... more magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.

A simple, sensitive and precise RP-HPLC method was developed for the determination of aceclofenac... more A simple, sensitive and precise RP-HPLC method was developed for the determination of aceclofenac in tablet dosage form. The RP-HPLC separation was achieved on hypersil C18 column (250 mm, 4.6 mm, 5μm) using mobile phase water: acetonitrile (55:45 v/v) at flow rate of 1 ml/min at ambient temperature. Quantification was achieved with photodiode array detection at 277 nm over the concentration range of 1-10 μm/ml. The method was validated statistically and applied successfully for the determination of aceclofenac.

Asian Journal of Research in Chemistry, 2017

This present work has been carried out to study the enhanced efficiency of chemical precipitation... more This present work has been carried out to study the enhanced efficiency of chemical precipitation treatment for paper mill effluents. After physico-chemical analysis, the chemical precipitation was carried out by using metal salt doses of aluminum chloride, ferric chloride and barium sulphate. The effect of pH and metal salt doses on the precipitation of pollutants was studied. The conditions were optimized in accordance with the removal of pollutants. The removal efficiencies were measured in terms of the reduction in color, total suspended solid (TSS), chemical oxygen demand (COD) and phenols. The pollution reduction has been analyzed and compared with industrial effluent discharge standards as per central pollution control board (CPCB). A comparative study of different metal salts doses of paper mill effluents by the chemical precipitation methods indicated that maximum color reduction, phenol and COD removal was 99.60%, 53.89 and 67.28% respectively for aluminum chloride, barium...

This research paper here to present to examine the adverse effect of dumping of solid waste at di... more This research paper here to present to examine the adverse effect of dumping of solid waste at disposal site on ground water quality at various disposal site at Jaipur city, India. This effect on ground water causes due to the unsystematic or unscientific dumping of solid waste. The water, which already presents in the waste, generates with the biodegradable waste or due to the infiltration of water by rainfall. This water which generates or occurs due to that process pours in the soil and causes contamination with ground water. And that contamination causes the water pollution and changes in the some parameters of the ground water. However, most of the parameters tested fall within WHO recommendation while some are not. The physical and chemical parameters such as temperature, pH, Hardness, Electrical Conductivity, Total Dissolved Solids, Total Suspended Solids were studied using various analytical techniques. To control the further pollution of ground water the open area dumping o...

Global Journal of Environmental Science and Management, 2016

Water is a unique natural resource among all sources available on earth. It plays an important ro... more Water is a unique natural resource among all sources available on earth. It plays an important role in economic development and the general well-being of the country. This study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of Jaipur in pre and post monsoon for public usage. Total eleven physico–chemical characteristics; total dissolved solids, total hardness,chloride, nitrate, electrical conductance, sodium, fluorideand potassium, pH, turbidity, temperature) were analyzed and observed values were compared with standard values recommended by Indian standard and World Health Organization. Most of parameter show higher value than permissible limit in pre and post monsoon. Water quality index study showed that drinking water in Amer (221.58,277.70), Lalawas (362.74,396.67), Jaisinghpura area (286.00,273.78) were found to be highly contaminated due to high value of total dissolved solids, electrical conductance, total hard...

Activated carbon was prepared from the leaves of Azadirachta indica by H3PO4 impregnation method.... more Activated carbon was prepared from the leaves of Azadirachta indica by H3PO4 impregnation method. The adsorption properties of Neem activated carbon were evaluated by Batch Mode adsorption studies. The amount of RO4 removed by NAC2 increases from 47.48 to 107.38 mg/g while increasing the initial concentration from 25 to 100 mg/L. A maximum amount of 94.96 % dye was removed at equilibrium time & at an initial dye concentration of 25 mg/L. This treatment method also enables us to recycle the maximum possible amount of spent carbon. The adsorption studies indicate that Neem activated carbon could be used as a low cost alternative to the commercial activated carbon.

Research Journal of Pharmacy and Technology, 2020

Asian Journal of Research in Chemistry, 2017

Activated carbon was prepared from Azadirachta indica (Neem) leaves by H3PO4 impregnation method.... more Activated carbon was prepared from Azadirachta indica (Neem) leaves by H3PO4 impregnation method. The adsorption property of neem activated carbon was evaluated by treating the dilute solutions of acid violet 49 of different concentrations. The batch mode adsorption studies of neem activated carbon (NAC 2 ) on acid violet 49 indicated that NAC 2 could be effectively and conveniently used as a low cost adsorbent. The amount of dye adsorbed, qt (mg/g) per unit mass of adsorbent was found to increase from 47.92 to 171.64 mg/g with an increase in the initial dye concentration from 25 to 100 mg/L. Further, this treatment method makes it possible to recycle the maximum possible amount of spent adsorbent for further use.

Journal of Drug Delivery and Therapeutics, 2012