期刊名称：The Open Environmental Pollution & Toxicology Journal
电子版ISSN：1876-3979
出版年度：2009
卷号：1
页码：43-48
DOI：10.2174/1876397900901010043
出版社：Bentham open
摘要：
The pyrolysis of sewage sludge (SS) and olive mill waste
(OMW) was carried out under nitrogen atmosphere and analyzed thermogravimetric
and scanning electron microscopy micrographs. Removal capacity of
pyrolyzed cokes was measured by humic acid solution. Humic substances
can react with chlorine to produce carcinogens in drinking water.
Activated carbon can be used as an effective treatment method to
remove humic substances from water to prior to disinfection by chlorination.
Olive mill waste, an agricultural byproduct and sewage sludge were
used to produce activated carbon by pyrolysis with the addition
of zinc chloride to enhance the reaction. Activated carbon was also
produced using olive mill waste and sewage sludge. Both of them
were compared to a commercially-available activated carbon product.
Optimum pyrolysis conditions and concentration of the activating
agent were identified. The equilibrium parameter model of the Freundlich
isotherm and Langmuir isotherm was applied to the adsorption data,
and the efficiency of pyrolyzed coke was determined. Activated carbon
produced from olive waste material had a lower specific surface
area (437.92 m2/g) than activated carbon produced from sewage sludge
(814.48 m2/g). While both of these were lower than the surface area
of a commercially activated carbon, the latter fell within the expected
range of commercial products, thus suggesting an effective means
of producing activated carbon while reducing sewage waste disposal
costs.
