PhD student , Indian Institute of Technology Guwahati


Mitigating Greenhouse gases from lignocllulose material by Biochemical method (Anaerobic digestion)

Paper industry produces huge amount of wastewater and hence sludge production is a major issue in the wastewater treatment plants. Sludge management through the conventional methods s landfilling produces leachate and incineration emits greenhouse gases. Therefore strong public opposition and strict regulatory pressure have been perceived in many countries. This has urged the industry to look for alternative disposal options. With the demand for energy growing worldwide and climate changes on the rise, anaerobic digestion a versatile technology for renewable energy generation through non-oxidative metabolism, has become an alternative energy source. The characteristics of paper mill sludge will be studied and different types of pretreatment such as physical, chemical, biological will be investigated for the enhance and shorten the hydrolysis step prior to anaerobic digestion. BMP (1 L) and batch scale (25 L) study will be carried out to see the best F/M ratio and optimum hydraulic retention time (HRT) respectively. From the optimum results, a new bioreactor will be design, fabricate and operate as a lap scale continuous reactor to optimize the organic loading rate (OLR). Finally pilot scale reactor will be design, fabricate and operate for the feasibility study under varied climatic condition.