title: A pilot study on remediation of sediments enriched by oyster farming wastes using granulated coal ash.
abstract: In order to evaluate the ability of granulated coal ash (GCA), a byproduct of coal thermal electric power stations, to remove hydrogen sulfide from organically enriched sediments, a pilot study was carried out at oyster farming sites, where sediments were enriched with oyster feces and dead oysters. Concentration of hydrogen sulfide in the interstitial water of the sediment decreased to nearly zero in both experimental sites, whereas it remained over 0.2mg/l in the control site. Concentration of acid volatile sulfide (AVS) in the sediment also decreased significantly in both experimental sites, while remained over 0.4 mg/g in the control site. Increases were observed in both the number of benthic microalgae species and the individual number of benthic animals in the surface sediments. This may have been due to the decrease in hydrogen sulfide.
authors.affiliation: Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima 739-8528, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: Department of Ocean Engineering, Pukyong National University, Busan 608-737, Republic of Korea. Electronic address: hoikim@pknu.ac.kr.
authors.forename: K H
authors.initials: KH
authors.lastname: Kim
authors.affiliation: Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima 739-8528, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Shirono
mesh_terms: D000818:Animals; D060729:Coal Ash; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry; D006862:Hydrogen Sulfide / Q000032:analysis* / Q000737:chemistry; D007564:Japan; D010125:Ostreidae / Q000378:metabolism / Q000502:physiology*; D010865:Pilot Projects
chemical_list: D060729:Coal Ash; D006862:Hydrogen Sulfide
keywords: Benthic environment; Coal ash; Hydrogen sulfide; Remediation