Recent Technology on Bio-remediation of POPs and Persistent Pesticides

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
45-02-01.pdf974.67 KB

Clean-up technology for contaminated soil and water with persistent organic pollutants (POPs) and other pesticides is required. A new aerobic pentachloronitrobenzene (PCNB)-degrading bacterium, Nocardioides sp. strain PD653, was isolated from an enrichment culture in an original soil-charcoal perfusion system. Strain PD653 also degraded hexachlorobenzene (HCB) with a liberation of chloride ions to CO2 under aerobic conditions. It is the first aerobic bacteria capable of mineralizing HCB. Moreover, an aerobic dieldrin-degrading fungus, Mucor sp. strain DDF, was isolated from soil to which endosulfan had been applied annually for many years. Strain DDF degraded dieldrin to 1.01 μM from 14.3 μM during 10-day incubation at 25°C. On the other hand, the application technology remains inadequate for remediating contaminated sites. Therefore, we developed a method to introduce the degrading-bacterial consortium into contaminated soil using a special charcoal material that enriched the soil with a methylthio-s-triazine degrading bacterium and the chloro-s-triazine degrading bacterial consortium CD7. For in situ bioremediation study, the enriched charcoal with CD7 was used at a contaminated site with simazine. The material was effective for preventing penetration of simazine into subsoils and nearby aquatic environments for approximately two years.

作成者 TAKAGI Kazuhiro KATAOKA Ryota YAMAZAKI Kenichi





公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 129
終了ページ 136
DOI 10.6090/jarq.45.129
権利 Japan International Research Center for Agricultural Sciences
言語 eng