in tehran megacity with 7705036 populations, 7000 tons solid waste a day has been generated in 2008. according to the municipality`s division, tehran is divided to 22 local zones. quality and quantity are the basis of planning for hazardous waste management system. in this context, selection a combination of techniques, technology and management program is imperative to achieve purposes of wast...

Waste generation has increased considerably worldwide in the last few decades. Solid wastes encompass the heterogeneous mass of throwaways from the urban community as well as the homogeneous accumulations of agricultural, industrial and mineral wastes. Waste generated from biomedical activities represents a real problem of living nature and human world. A proper waste management system should b...

This paper describes a laboratory method for treatment of used engine oil FENIX SUPERIOR SAE 15W-40 with intention to decrease of sulfur and selected metal content at acceptable level. FENIX SUPERIOR SAE 15W-40, produced by manufacturer Joint Stock Company FAM Krusevac, is used for lubrication of the most modern four-stroke diesel and gas engines of passenger and commercial vehicles, engine con...

One of the greatest challenges facing most urban centers in Nigeria today is how to cope with the increasing volume of solid wastes being generated daily by its populace. Municipal solid waste tend to be one of the most visible and serious environmental problems in Nigerian cities [1]. This is manifested by large refuse heaps which dot most carriageways, streets and surroundings disfiguring the...

The plating industry is one of the main toxic chemicals consumers, which uses various chemicals, including solvents, acids, bases, cleansers, sophisticated organic ingredients, and metal salts of cadmium, nickel and chromium. Due to the growing production of industrial waste in spite of actions related to these wastes’ management, no comprehensive pattern was introduced at different levels. Thi...

One of the greatest challenges facing most urban centers in Nigeria today is how to cope with the increasing volume of solid wastes being generated daily by its populace. Municipal solid waste tend to be one of the most visible and serious environmental problems in Nigerian cities [1]. This is manifested by large refuse heaps which dot most carriageways, streets and surroundings disfiguring the...

Economic growth inevitably influences the food chain. Growing demand with changes in lifestyle and health consciousness encourage use of packaged and pre-prepared foods. The needs of environmental protection from waste generated are largely overlooked, and a lack of knowledge about the impact on the environment and its health effects constitute food security/safety problems. Food production and...

sludge, which is produced as a by-product of all treatment processes, has considerable potential as a fertilizer and soil conditioner. many authorities now discharge the sludge after treatment directly to agricultural land in liquid form, while some others dewater and dry it first. in either case, with proper marketing, it is generally possible for an authority to earn revenue by this means, al...