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Ramesh, S. T.
- Pilot Plant Study on Combined Treatment of Kitchen Refuse and Domestic Sewage by Anaerobic Digestion
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Authors
Affiliations
1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli-620 015, T.N., IN
2 Department of Civil Engineering, Government College of Technology, Coimbatore-641 013, T.N., IN
1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli-620 015, T.N., IN
2 Department of Civil Engineering, Government College of Technology, Coimbatore-641 013, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 8, No 1 (2009), Pagination: 157-160Abstract
Poor management of kitchen refuse and similar garbages represent the most serious urban environmental and public health problem. Poor waste management has dire environmental and public health consequences. Public health-wise, the presence of waste in residential areas, markets, roadsides, etc. poses grave health hazards to people, in general, and children in particular. The kitchen refuse from hotels, big hostels and residential colonies can be effectively disposed off by anaerobic digestion. Pilot scale model of 500-litre capacity anaerobic digester was operated using kitchen refuse from the students hostel as a feed stock material. Digester performance was monitored by measuring daily pH and gas production. When the steady state was obtained, it was loaded with 1.08 kg total solids with 18 litres of domestic sewage. On the 17th day the steady state was obtained and it was started with a loading rate of 2.3 kg VS/m3 of digester volume and the gas production was 0.40 m3/kg VS/day at an HRT of 25 days. The digester performance was 87% TS reduction, 95% VS reduction, 75% of COD reduction with percentage of methane gas as 75%. The probable volume of biogas would be 6.6 m3/day if it is completely disposed with 50 kg at the rate of 0.4 m3/kg VS. This gas could serve 38 persons per day at the rate of 0.227 m3/person/day.Keywords
Anaerobic Digestion, Kitchen Refuse, Domestic Sewage, Biogas.Full Text
- Adsorptive Removal of Copper from Aqueous Solution onto Raw Rice Husk: Kinetics and Isotherms
Abstract Views :122 |
PDF Views:1
Authors
Affiliations
1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli-620 015, T. N., IN
1 Department of Civil Engineering, National Institute of Technology, Tiruchirappalli-620 015, T. N., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 4 (2008), Pagination: 763-768Abstract
The pollution of water with heavy metals has been of great concern due to their toxic nature and other adverse effects. All heavy metals, including those required in small amount for the physiological machinery of living organisms, are extremely toxic at high concentrations. Therefore, heavy metal burden of industrial wastewaters need to be substantially reduced before discharging them into water bodies. Dissatisfaction with conventional methods of metal removal from wastewaters has led to a surge in efforts aimed at finding out suitable alternatives. This work presents the results of study on heavy metals removal from wastewater by adsorption using low cost adsorbents which could be used as an alternative approach to remove heavy metals from wastewater. A series of batch studies were conducted using raw rice husk (RRH) of particle size 300-150 μm mixed with synthetic heavy metal solutions to see the removal of copper metal.Keywords
Heavy metals, Copper, Adsorption, Raw Rice Husk, Langmuir Isotherm, Freundlich Isotherm.Full Text