Effect of Bacillus subtilis Zeolite Used for Sediment Remediation on Sulfide, Phosphate, and Nitrogen Control in a Microcosm

Maheshkumar Prakash Patil, Ilwon Jeong, Hee-Eun Woo, Seok-Jin Oh, Hyung Chul Kim, Kyeongmin Kim, Shinya Nakashita and Kyunghoi Kim
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Maheshkumar Prakash Patil: Industry-University Cooperation Foundation, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea
Ilwon Jeong: Department of Ocean Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea
Hee-Eun Woo: Department of Ocean Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea
Seok-Jin Oh: Department of Oceanography, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea
Hyung Chul Kim: Fisheries Resources and Environment Research Division, West Sea Fisheries Research Institute, National Institute of Fisheries Science, 14 Seonnyeobawi-ro, Jung-gu, Incheon 22383, Korea
Kyeongmin Kim: Coastal and Estuarine Sediment Dynamics Group, Port and Airport Research Institute, 3-1-1 Nagase, Yokosuka 239-0826, Kanagawa, Japan
Shinya Nakashita: Graduate School of Advanced Science and Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima 739-8527, Hiroshima, Japan
Kyunghoi Kim: Department of Ocean Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea

IJERPH, 2022, vol. 19, issue 7, 1-7

Abstract: Eutrophication is an emerging worldwide issue concerning the excessive accumulation of various pollutants in sediments, owing to the release of industrial or household wastewaters to coastal areas. The coastal sediment of Goseong Bay in the Republic of Korea is organically enriched with pollutants, including heavy metals, sulfide, phosphate, and ammonia. Microbial remediation and capping techniques have been suggested as effective routes for sediment remediation. In this study, Bacillus subtilis zeolite (BZ) was used as a sediment capping material, and effective remediation of coastal sediment was observed in a 40-day laboratory microcosm experiment. A significant decrease in the sediment water content and reduced concentration of acid volatile sulfide were observed in the BZ-capped sediment. In the overlying water and pore water, significant decreases in phosphate and dissolved inorganic nitrogen (DIN; NO 2 -N + NO 3 -N and NH 4 -N) concentrations were observed in the BZ-treated experiment. Based on our findings, we conclude that BZ could be an effective capping material for coastal sediment remediation.

Keywords: Bacillus subtilis zeolite; sediment remediation; acid volatile sulfite; marine sediment; microcosm experiment; ammonia (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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