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학술발표회초록보기

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제107회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Iron and Sulfur Biogeochemistry in Subsurface System: Coupled Biological and Geochemical Processes

등록일
2011년 3월 9일 10시 57분 18초
접수번호
1760
발표코드
ENVR1-6 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 11시 : 15분
발표형식
심포지엄
발표분야
환경에너지 - Abiotic/biotic Interactions in Nano-interfaces
저자 및
공동저자
권만재, 박영태, 윤현식1, 이우람1, 지민규1, 지은도1, 최재영
한국과학기술연구원 환경정화연구실, Korea
1연세대학교 환경공학과, Korea
Dissimilatory iron- and sulfate-reducing Bacteria (DIRB and DSRB) are common subsurface microorganisms as iron and sulfate are abundant in many natural environments. DIRB and DSRB couple the oxidation of organic carbon or H2 to the reduction of iron and sulfate, which plays important roles in cycling of carbon, metals, and sulfur in the subsurface environment. DIRB and DSRB have also profound implications for the fate and transport of organic and inorganic contaminants in aquatic and terrestrial systems. Subsurface contamination by heavy metals or organic contaminants is a big concern for human health and environmental protection. In situ bioremediation is one option for reducing levels of contaminants. Introducing suitable substrates into the subsurface can stimulate the growth of iron and/or sulfate reducing microorganisms which often reduce contaminants either directly or by the production of reactive Fe(II) and sulfur species. In this presentation, we will discuss 1) the effects of several electron donors (i.e., acetate, lactate, and glucose) on the enrichment of specific communities capable of reducing iron and sulfate and 2) the effects of sulfate reduction on FeIII (hydr)oxide (i.e., ferrihydrite, lepidocrocite, and goethite) reduction and microbial community development.

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