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Influence of heavy metal and cationic surfactants on biodegradation of phenol with bentonite

Title
Influence of heavy metal and cationic surfactants on biodegradation of phenol with bentonite
Authors
Choi J.Park J.-W.Kim J.Y.Park J.-Y.Cho J.-S.Hwang I.
Ewha Authors
박재우
Issue Date
2002
Journal Title
Proceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Indexed
SCOPUS scopus
Abstract
To study the feasibility of organobentonite modified with hexadecyltrimethylammonium (HDTMA) as an immobilizing barrier for mixed wastes, the interactions of heavy metals, organic contaminants, and soil microorganisms were investigated when they coexist with organobentonite. At low concentrations (<50μM), heavy metal ions slightly reduced the growth of soil microbes and partially interfere the biodegradation of phenol. Soil microorganisms with bentonite grew after approximately 25 hours of lag period and degraded phenol within 350 hours. However, the number of soil microorganisms with HDTMA-bentonite was reduced due to the toxicity of desorbed HDTMA. On the other hand, dioctadecyltrimethylammonium (DODMA) and dihexadecyldimethylammonium (DHDMA) exerted little toxicity to soil microbes except for minor decreases in the rate of phenol biodegradation.
ISBN
1574771329
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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