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포스터 세션 P12
Rice Husk Biochar Composites : A Sustainable Solution for Capping Heavy Metal Contaminated Sediment
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- 발행기관
- 한국퇴적환경준설학회(구 한국환경준설학회) 바로가기
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- 간행물
- 한국퇴적환경준설학회 학술대회 초록집(구 한국환경준설학회 학술대회 논문집) 바로가기
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- 통권
- 2023년 한국환경준설학회 춘계 학술대회 초록집 (2023.05)바로가기
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- 페이지
- pp.12-12
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- 저자
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- 언어
- 영어(ENG)
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- URL
- https://www.earticle.net/Article/A433080
원문정보
초록
- 영어
- Anthropogenic activities led to the discharge of heavy metals into aquatic systems, which are eventually deposited in sediment. Physical disturbances and environmental changes can trigger the release of these heavy metals from sediment creating potential risks to both environment and human health. Biochar has been recognized as an excellent adsorbent for restoring heavy metal-contaminated sediment. In this study, we developed two rice husk biochar (RBC) composite pellets using hydroxyapatite (HAP), and magnesium oxide (MgO), as an additive. As formed biochar composites are called HAP@RBC-P and MgO@RBC-P. The physicochemical properties of the fabricated composites were evaluated by multiple characterization techniques. The composites HAP@RBC-P and MgO@RBC-P exhibited better adsorption performance for Pb(II), Cd(II), and Zn(II) compared to RBC. The efficiency of the composites in controlling the release of heavy metals from sediment was evaluated by mixing them with the sediment. After 28 days of cover, both HAP@RBC-P and MgO@RBC-P effectively inhibited the release of Pb(II), Cd(II), and Zn(II) from sediment to overlying water, with inhibition efficiencies ranging from 80.4% to 93.65%, 57.52% to 95.2%, and 46.55% to 84.0% for HAP@RBC-P, and 50.0% to 81.4%, 70.6% to 88.6%, and 67.1% to 88.2% for MgO@RBC-P. Both biochar composite pellets exhibited high inhibition efficiencies for the release of heavy metals from the sediment composite mix. The practical applicability of these composites was assessed through a toxicity test on sediment-dwelling organisms (Lumbriculus variegatus). After a 28-day experiment, the survival rate of the Lumbriculus variegates was over 90% for both types of biochar composite pellets. indicating that the biochar composite pellet was an environmentally friendly biochar material.
키워드
Biochar composite pellet Lumbriculus variegatus toxicity capping sediment heavy metals저자
간행물 정보
발행기관
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- 발행기관명
- 한국퇴적환경준설학회(구 한국환경준설학회) [Korean Society of Sediment Environment and Dredging]
- 설립연도
- 2011
- 분야
- 자연과학>해양학
- 소개
- 본 학회는 저수지, 호소, 하천, 연안해역의 환경개선을 위한 준설공사에 관련된 연구를 촉진하고 국내•외의 관련 연구, 교육 및 산업기관과의 교류를 도모하여 지속 가능한 수 환경 퇴적물관리에 관한 과학기술 진전에 기여함을 목적으로 한다.
간행물
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- 간행물명
- 한국퇴적환경준설학회 학술대회 초록집(구 한국환경준설학회 학술대회 논문집)
- 간기
- 반년간
- 수록기간
- 2012~2026
- 십진분류
- KDC 539 DDC 628
이 권호 내 다른 논문 / 한국퇴적환경준설학회 학술대회 초록집(구 한국환경준설학회 학술대회 논문집) 2023년 한국환경준설학회 춘계 학술대회 초록집
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