title: Estimation of hydrogen sulfide removal efficiency with granulated coal ash applied to eutrophic marine sediment using a simplified simulation model.
abstract: Hydrogen sulfide generated in eutrophic marine sediment is harmful for living organisms. It is therefore necessary to remove hydrogen sulfide from the sediment to restore benthic ecosystems. Previous studies revealed that granulated coal ash, which is a by-product of coal thermal electric power stations, could remove and oxidize hydrogen sulfide. In this study, we propose a simplified simulation model to estimate the hydrogen sulfide removal efficiency of granulated coal ash. Hydrogen sulfide concentrations in eutrophic marine sediment pore water with and without the application of granulated coal ash were calculated by the proposed model, and the outputs were compared with semi-field or field observation data. The model outputs reproduced the observed data well. Using the proposed model outputs, we suggest an optimum application dosage of granulated coal ash for remediating eutrophic marine sediment.
authors.affiliation: Research Center for Inland Seas, Kobe University, 5-1-1 Fukaeminami, Higashinada, Kobe 658-0022, Japan. Electronic address: s-asaoka@maritime.kobe-u.ac.jp.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Asaoka
authors.affiliation: Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima 739-8528, Japan.
authors.forename: Tamiji
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: FUKKEN Co. Ltd., 2-10-11 Hikari, Higashi-ku, Hiroshima-shi, Hiroshima 732-0052, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Yamamoto
authors.affiliation: Research Center for Inland Seas, Kobe University, 5-1-1 Fukaeminami, Higashinada, Kobe 658-0022, Japan.
authors.forename: Hideo
authors.initials: H
authors.lastname: Okamura
authors.affiliation: The Chugoku Electric Power Co., Inc., 4-33, Komachi, Naka-ku, Hiroshima-shi, Hiroshima 730-8701, Japan.
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Hino
authors.affiliation: The Chugoku Electric Power Co., Inc., 4-33, Komachi, Naka-ku, Hiroshima-shi, Hiroshima 730-8701, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Nakamoto
authors.affiliation: The Chugoku Electric Power Co., Inc., 4-33, Komachi, Naka-ku, Hiroshima-shi, Hiroshima 730-8701, Japan.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Saito
mesh_terms: D003031:Coal; D060729:Coal Ash / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D005068:Eutrophication; D019015:Geologic Sediments / Q000737:chemistry*; D006862:Hydrogen Sulfide / Q000032:analysis*; D008956:Models, Chemical
chemical_list: D003031:Coal; D060729:Coal Ash; D006862:Hydrogen Sulfide
keywords: Eutrophication; Hypoxia; Model; Remediation; Sediment