title: A pilot study on remediation of muddy tidal flat using porous pile.
abstract: In order to prove that porous piles are effective in remediating muddy tidal flat sediments and increasing the biomass, field experiments were carried out at the tidal flat of a brackish river located in Hiroshima City, Japan. Porous piles with a diameter of 16cm and height of 50cm were installed in the muddy sediment that covers the sand layer of the tidal flat. After installation, concentrations of dissolved oxygen in interstitial water in and around the porous piles increased to a maximum concentration of 6mg/l due to enhancement of the groundwater flow. The increase of dissolved oxygen in the interstitial water produced a decrease in the concentration of ammonia and an increase in the individual number of benthos at the porous pile site. From these results, we concluded that the porous pile is an effective technology for remediation of muddy tidal flats.
authors.affiliation: Department of Ocean Engineering, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea. Electronic address: firesinger@gmail.com.
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Ryu
authors.affiliation: Department of Civil and Environmental Engineering, Hiroshima University, 4-1, Kagamiyama 1 chome, Higashi-Hiroshima 739-8527, Japan. Electronic address: nakashita@hiroshima-u.ac.jp.
authors.forename: Shinya
authors.initials: S
authors.lastname: Nakashita
authors.affiliation: Department of Ocean Engineering, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea. Electronic address: ilee@pknu.ac.kr.
authors.forename: In-Cheol
authors.initials: IC
authors.lastname: Lee
authors.affiliation: Department of Ecological Engineering, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea. Electronic address: kimds@pknu.ac.kr.
authors.forename: Dong-Sun
authors.initials: DS
authors.lastname: Kim
authors.affiliation: Ecology & Restoration Division, Korea Fisheries Resources Agency, 19F, 79, Cengum Jungang-ro, Haeundae-Gu, Busan 48058, Republic of Korea. Electronic address: jrkim@fira.or.kr.
authors.forename: Jong-Ryol
authors.initials: JR
authors.lastname: Kim
authors.affiliation: Department of Civil and Environmental Engineering, Hiroshima University, 4-1, Kagamiyama 1 chome, Higashi-Hiroshima 739-8527, Japan. Electronic address: hibinot@hiroshima-u.ac.jp.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Hibino
authors.affiliation: Department of Biosphere Science, Hiroshima University, 4-1, Kagamiyama 1 chome, Higashi-Hiroshima 739-8527, Japan. Electronic address: tamyama@hiroshima-u.ac.jp.
authors.forename: Tamiji
authors.initials: T
authors.lastname: Yamamoto
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: Department of Ocean Engineering, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea. Electronic address: hoikim@pknu.ac.kr.
authors.forename: Kyunghoi
authors.initials: K
authors.lastname: Kim
mesh_terms: D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry*; D060587:Groundwater / Q000737:chemistry*; D007564:Japan; D010100:Oxygen / Q000032:analysis*; D010865:Pilot Projects; D016062:Porosity; D013499:Surface Properties; D014872:Water Movements
chemical_list: D010100:Oxygen
keywords: Groundwater flow; Muddy tidal flat; Porous pile; Remediation