Solid waste generated in large quantity is creating major issue of solid waste management in many... more Solid waste generated in large quantity is creating major issue of solid waste management in many countries. The major portion of solid waste generated is dumped on land, creating an environmental problems like flooding, air, soil and water pollution and also has an impact on human health. A large amount of organic waste is present in solid waste generated. The organic waste content in solid waste can be converted into useful end product called as compost by processing the waste, which will help recycling and reduce load on landfill. In composting process, it reduces volume of waste and convert it to useful end product. Composting is one of the good options for treatment of organic waste at the point of generation and the process depends on many parameters like temperature, moisture content, pH, C/N ratio, etc. Numerous parameters can be used to regulate the rate of composting. The understanding of composting will help to treat organic waste in proper manner and will reduce environmental problems due to improper solid waste management. This review paper contains different method of composting such as aerobic and anaerobic composting and their types and the factors affecting for composting.
In the present investigation, the performance of a laboratory-scale plate and frame-type electroc... more In the present investigation, the performance of a laboratory-scale plate and frame-type electrochemical ion-exchange (EIX) cell on removal of hexavalent chromium from synthetic wastewater containing 5 mg/l of Cr(VI) was evaluated under varying applied voltages. Ruthenium dioxide-coated titanium plate (RuO 2/Ti) was used as anode and stainless steel plates as cathode. The EIX cell was run at different hydraulic retention time (HRT). Before using in the electrochemical cell, the capacity of ion-exchange resin was evaluated through kinetic and isotherm equilibrium tests in batch mode. The batch kinetic study result showed that the equilibrium time for effective ion exchange with resin is 2 h. The isotherm equilibrium data fit well to both Freundlich and Langmuir isotherms. Maximum capacity (q m) of resin calculated from Langmuir isotherm was 71.42 mg/g. Up to 99% of chromium removal was noticed in the EIX cell containing fresh resin at applied voltages of 10 V and higher. Migration of...
Solid waste generated in large quantity is creating major issue of solid waste management in many... more Solid waste generated in large quantity is creating major issue of solid waste management in many countries. The major portion of solid waste generated is dumped on land, creating an environmental problems like flooding, air, soil and water pollution and also has an impact on human health. A large amount of organic waste is present in solid waste generated. The organic waste content in solid waste can be converted into useful end product called as compost by processing the waste, which will help recycling and reduce load on landfill. In composting process, it reduces volume of waste and convert it to useful end product. Composting is one of the good options for treatment of organic waste at the point of generation and the process depends on many parameters like temperature, moisture content, pH, C/N ratio, etc. Numerous parameters can be used to regulate the rate of composting. The understanding of composting will help to treat organic waste in proper manner and will reduce environmental problems due to improper solid waste management. This review paper contains different method of composting such as aerobic and anaerobic composting and their types and the factors affecting for composting.
In the present investigation, the performance of a laboratory-scale plate and frame-type electroc... more In the present investigation, the performance of a laboratory-scale plate and frame-type electrochemical ion-exchange (EIX) cell on removal of hexavalent chromium from synthetic wastewater containing 5 mg/l of Cr(VI) was evaluated under varying applied voltages. Ruthenium dioxide-coated titanium plate (RuO 2/Ti) was used as anode and stainless steel plates as cathode. The EIX cell was run at different hydraulic retention time (HRT). Before using in the electrochemical cell, the capacity of ion-exchange resin was evaluated through kinetic and isotherm equilibrium tests in batch mode. The batch kinetic study result showed that the equilibrium time for effective ion exchange with resin is 2 h. The isotherm equilibrium data fit well to both Freundlich and Langmuir isotherms. Maximum capacity (q m) of resin calculated from Langmuir isotherm was 71.42 mg/g. Up to 99% of chromium removal was noticed in the EIX cell containing fresh resin at applied voltages of 10 V and higher. Migration of...
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Papers by Amit Dharnaik