Waste Treatment Research Papers - Academia.edu (original) (raw)

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- by and +1
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- Recycling, Multidisciplinary, Escherichia coli, Animals

At Centralised Waste Management Facility (CWMF) 160m3 of radioactive chemical sludge, generated from treatment of several batches of category-II and category-III radioactive liquid wastes by chemical precipitation method was stored in clariflocculator (CF) for downstream processing. The sludge needed conditioning before disposal. The analysis of the sludge samples collected at different radial locations and depths from the CF showed suspended

- by A G Shanmugamani
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- Process Control, Waste Management, Compressive Strength, Mass Transport
- by Donald McLusky
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- Water quality, Water Pollution, Multidisciplinary, Estuaries
- by Sudipta Chatterjee
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- Engineering, Thermodynamics, Modeling, Water Purification
- by Eze Ubajekwe
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- Philosophy, Applied Ethics, Civil War, Environmental Sustainability
- by Angela Lindner
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- Biochemistry, Physiology, Water, Water Purification
- by Mohammad al-Masri
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- Engineering, Water Purification, Syria, Ultrafiltration
- by Phillip Fedorak
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- Environmental microbiology, Kinetics, Petroleum, Multidisciplinary

This article presents the results from the monitoring of a system of ponds for the treatment of piggery wastes, carried out during a 20 months period, with the objective to determine design parameters for the optimization of the treatment system. A series composed of two anaerobic ponds, one facultative pond and one water hyacinth pond, gave an efficiency of 97% in the removal of BOD5, 93% for total phosphorus, 91% for total Kjeldahl nitrogen and a removal of 7 log units for fecal coliforms. A model of the optimization incurred in the treatment of these wastes was developed, within economic concepts.

- by Rejane Costa
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- Cost Estimation, Case Study, Pesquisa Operacional, Waste Treatment
- by Michael Hauschild
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- Mechanical Engineering, Energy, Life Cycle Assessment, Waste Management
- by Yoram Avnimelech
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- Engineering, Environmental Engineering, Civil Engineering, Waste
- by Diederik Rousseau
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- Water, Wetlands, Hydrology, Transformation

Anaerobic digestion is an appropriate technique for the treatment of sludge before final disposal and it is employed worldwide as the oldest and most important process for sludge stabilization. In general, mesophilic anaerobic digestion of sewage sludge is more widely used compared to thermophilic digestion. Furthermore, thermal pre-treatment is suitable for the improvement of stabilization, enhancement of dewatering of the

- by Birgitte Ahring
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- Engineering, Water, Kinetics, Water Purification
- by Kinkar Das
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- Biomass, Multidisciplinary, Biosolids, Stocking Density

Belgium started its nuclear programme quite early. The first installations were constructed in the fifties, and presently, more than 55 % of the Belgian electricity production is provided by nuclear power plants. After 30 years of nuclear experience, Belgium started decommissioning of nuclear facilities in the eighties with two main projects: the BR3-PWR plant and the Eurochemic reprocessing plant. The BR3-decommissioning project is carried out at the Belgian Nuclear Research Centre, while the decommissioning of the former Eurochemic reprocessing plant is managed and operated by Belgoprocess n.v., which is also operating the centralised waste treatment facilities and the interim storage for Belgian radioactive waste. Some fundamental principles have to be considered for the management of materials resulting from the decommissioning of nuclear installations, equipment and/or components, mainly based on the guidelines of the “IAEA-Safety Fundamentals. The Principles of Radioactive Was...

- by Lucien Teunckens
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- Engineering, Industrial Automation, Waste Management, Nuclear reactor
- by Nuno Lapa
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- Engineering, Chemistry, Biomass, Waste
- by cesar nieto
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- Engineering, Chemistry, Industrial Organization, Technology
- by Rajeshwar Tyagi
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- Waste, Agriculture, Multidisciplinary, Nitrogen Fixation
- by Kang Xia
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- Cultural Studies, Kinetics, Carbon, Process Control
- by Lars Waldheim
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- Engineering, Technology, Biomass, GAS TURBINE
- by Tuomas Mattila
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- Industrial Ecology, Operations Research, Consumer Behavior, Life Cycle Assessment

The objective of this study was to study the performances of six 200-L polyethylene bins, each with different design for passive aeration to organic wastes composting. Food scraps and dry leaves (1.6 kg) were added to each bin once a day until the bin was full. Temperatures at the middle portion were measured daily. The compost from each bin was taken once a week for 120 days for analysis of C, N, volatile solids, and a germination index once a week for 120 days. After 120 days, the compost sample from each bin was taken to determine the mass reduction, size distribution, CEC, N, P and K values. The results showed that the temperatures inside the bins were in the ranges of 24 °C–57 °C. The composts in all bins were found to be stable at around 56–91 days. The wastes decayed fastest in bins with lateral and vertical systems of natural ventilation. It took about two months to stabilize the organic wastes, with a 59–62% decrease of mass. The C/N ratio, CEC, N, P, and K values of the final composts were 14.8–16.0, 66–68 cmol/kg, and 1.26–1.50% N, 0.52–0.56% P2O5 and 1.66–1.92% K2O, respectively.

- by Somjai Karnchanawong
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- Engineering, Design, Conception, Environmental Sciences
- by Mauro Gandolla
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- Microbiology, Physiology, Environmental Science, Applied Research
- by Muralidhar N Ingale
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- Chemical Engineering, Process Safety, Copper, Waste Treatment
- by Lars Waldheim
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- Engineering, Technology, Biomass, Waste Treatment
- by John Bumpus
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- Chemistry, Chemical Education, Education, Wastewater Treatment
- by Mokhtar Arami
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- Engineering, Water Purification, Response Surface Methodology, Water Treatment

Microbial fuel cells (MFCs) are a promising technology for sustainable production of alternative energy and waste treatment. The performance of microbial fuel cells is severely affected by limitations based on irreversible reactions and processes in the anode and the cathode compartments. The purpose of this paper is to review the cathodic limitations MFCs and provide an overview on cathodic activation,

- by Olli Tuovinen
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- Engineering, Alternative Energy, Power, Mass Transport
- by Ari Rabl
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- Environmental Engineering, Civil Engineering, Regulation, Waste Management
- by Andre Moraes
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- Ecosystem Services, Ecological Economics, Economic Development, Applied Economics
- by Nicolas BERNET
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- Water Purification, Multidisciplinary, Anaerobic Digestion, Legislation
- by Esad Prohic
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- Water Pollution, Multidisciplinary, Water Science, Municipal Solid Waste
- by Anne Lehavre
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- Waste Treatment
- by Demetrio Pitea
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- Environmental Engineering, Civil Engineering, Waste Management, Incineration
- by Annie Booth
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- Engineering, Higher Education, Recycling, Waste Management
- by Edgar Buck
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- Waste Management, Solid waste, Potassium, Nuclear Fuel Cycle
- by Biplob Paul
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- Process Control, Waste Management, Compressive Strength, Mass Transport

A high cost-effective treatment of sulphochromic waste is proposed employing a raw coconut coir as biosorbent for Cr(VI) removal. The ideal pH and sorption kinetic, sorption capacities, and sorption sites were the studied biosorbent parameters. After testing five different isotherm models with standard solutions, Redlich–Peterson and Toth best fitted the experimental data, obtaining a theoretical Cr(VI) sorption capacity (SC) of

- by Sherlan Lemos and +2
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- Engineering, Thermodynamics, Kinetics, Modeling
- by Raha Rahim and +1
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- Wastewater Treatment, Olive Oil, Pulp and Paper, Process
- by karam matar
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- Engineering, Air Quality, Technology, Regulation

Formal waste management services are not accessible for the majority of primary healthcare clinics on the African continent, and affordable and practicable technology solutions are required in the developing country context. In response, a protocol was established for the first quantitative and qualitative evaluation of relatively low cost small-scale incinerators for use at rural primary healthcare clinics. The protocol comprised the first phase of four, which defined the comprehensive trials of three incineration units. The trials showed that all of the units could be used to render medical waste non-infectious, and to destroy syringes or render needles unsuitable for reuse. Emission loads from the incinerators are higher than large-scale commercial incinerators, but a panel of experts considered the incinerators to be more acceptable compared to the other waste treatment and disposal options available in under-serviced rural areas. However, the incinerators must be used within a ...

- by Alan Brent
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- Environmental Engineering, Community Development, Waste Management, Public Health
- by Sudha Goel
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- Engineering, Solid Waste Management, Municipal Solid Waste, Environmental Sciences
- by Joseph Akinmusuru
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- Engineering, Environmental Sciences, Waste Treatment, Slag
- by Piotr Stepnowski
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- Kinetics, Water Purification, Waste Management, Multidisciplinary
- by H. Martínez
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- Engineering, Ecological Engineering, Earth Sciences, Renewable Energy
- by Kate Parizeau
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- Engineering, Production, Waste Management, Planning
- by Andreas Schaeffer
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- Multidisciplinary, Water Hyacinth, Plant Roots, Biomass production

The purpose of this paper is to support the development of so-called good practice guidelines for the estimation of methane (CH4) emissions from solid waste (SW) disposal for national greenhouse gas inventories. The paper reviews and discusses the emission estimation methods given in the IPCC 1996 Revised Guidelines (IPCC Guidelines), and uncertainty and quality management issues related to the emission estimation. At solid waste disposal sites (SWDS) the degradable organic carbon in waste is decomposed by bacteria under anaerobic conditions into methane (CH4) and other compounds. The CH4 emissions from SWDS are important contributors of global anthropogenic CH4 emissions. The IPCC Guidelines give two methods for estimation CH4 emissions from solid waste disposal. The IPCC default method is a simple mass balance calculation which estimates the amount of CH4 emitted from the SWDS assuming that all CH4 is released the same year the waste is disposed of. The other method outlined in th...

- by R. Pipatti
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- Quality Management, Developing Country, Waste Disposal, Solid waste