1) What do you mean by received, moisture-free and moisture and ash free heat value, and describe how these are computed? What do you understand by composting? Describe how MSW are composted in detail. Describe how does the modern landfill vary from older existing landfills? Write and describe the main items which require to be considered in modern landfills which were not significant in older landfills before passage of RCRA regulations. What do you mean by hazardous wastes and explain its sources? Describe how are they categorized?
2) What do you mean by briquetting? Write downe its merits and demerits over conventional fuels? Write down environmental benefits of bio-chemical and Thermo-chemical conversion of wastes in detail.