Release of heavy metals from sediment bed under wave-induced liquefaction

Zhenhong Sun; Guohui Xu; Ting Hao; Zhe Huang; Hongru Fang; Gang Wang

doi:10.1016/j.marpolbul.2015.06.015

Release of heavy metals from sediment bed under wave-induced liquefaction

Mar Pollut Bull. 2015 Aug 15;97(1-2):209-216. doi: 10.1016/j.marpolbul.2015.06.015. Epub 2015 Jun 22.

Authors

Zhenhong Sun¹, Guohui Xu², Ting Hao³, Zhe Huang⁴, Hongru Fang¹, Gang Wang⁵

Affiliations

¹ Key Laboratory of Marine Environment and Ecology, Ocean University of China, Ministry of Education, Qingdao 266100, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, PR China.
² Key Laboratory of Marine Environment and Ecology, Ocean University of China, Ministry of Education, Qingdao 266100, PR China; College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, PR China. Electronic address: xuguohui@ouc.edu.cn.
³ College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China.
⁴ Institute for Sedimentation on River and Coastal Engineering, Tianjin University, Tianjin 300072, PR China.
⁵ Production Brigade of Geology and Hydrogeology, Bureau of Geology and Mineral Resources of Hebei Province, Qinhuangdao 066000, PR China.

PMID: 26111653
DOI: 10.1016/j.marpolbul.2015.06.015

Abstract

Sediments in lakes and coasts can release metals into water via static diffusion and especially resuspension. The resuspension under sediment liquefaction may severely affect the concentrations of metals in water. In this study, flume experiments were carried out twice to study the release of two metal combinations (Zn and Pb; Zn and Cu), respectively. Each experiment included three phases: consolidation; non-liquefaction and liquefaction. Results showed that total Zn concentration at liquefaction phase increased by a maximum rate of 26 compared with the consolidation phase. The concentration of particulate Zn at liquefaction phase increased by a maximum rate of 8.30 compared with the non-liquefaction phase. The average concentration of dissolved Zn at the liquefaction phase increased up to 0.24 times from the consolidation phase. Total Zn concentration at the non-liquefaction phase increased by several times compared with the consolidation phase. Metals were homogeneously distributed in the liquefaction layer through wave actions.

Keywords: Flume experiment; Heavy metals; Liquefaction; Sediment.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Copper / chemistry
Geologic Sediments / chemistry*
Lakes
Lead / chemistry
Metals, Heavy / analysis
Metals, Heavy / chemistry*
Water
Water Pollutants, Chemical / analysis
Water Pollutants, Chemical / chemistry*
Zinc / chemistry

Substances

Metals, Heavy
Water Pollutants, Chemical
Water
Lead
Copper
Zinc