PMID: 11317888Apr 25, 2001Paper

Assessment of toxicity reduction after metal removal in bioleached sewage sludge

Water Research
A Y RenouxR Samson

Abstract

Sewage sludge can be applied to land to supply and recycle organic matter and nutrients. Trace elements in sludge, however, may accumulate in the soil with repeated sludge applications. Reducing metal content may therefore reduce the adverse effects of sludge application. The objective of this study was to evaluate the efficiency of bioleaching technology in reducing metal content and toxicity as measured by a battery of terrestrial and liquid-phase bioassays. Sludge-soil mixtures simulating the application of sludge to land were tested by means of terrestrial bioassays, barley (Hordeum vulgare L.) seed germination (5 d) and sprout growth (14 d), lettuce (Lactuca sativa) seed germination (5 d), and worm (Eisenia andrei) mortality (14 d). Liquid-phase bioassays, Microtox (Vibrio fischeri, 15 min), lettuce root elongation (L. sativa, 5 d), cladoceran mortality (Daphnia magna, 48 h), and SOS Chromotest (Escherichia coli) were used after elutriation of the sludge. Comparison of the bioassay results (except for D. magna) before and after treatment demonstrated that this bioleaching process reduced both sludge toxicity and metal content. In addition, lower Cu and Zn concentrations found in barley sprouts following treatment supported...Continue Reading

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Citations

Jul 26, 2006·Archives of Environmental Contamination and Toxicology·B Fjällborg, N Gustafsson
Dec 6, 2005·Archives of Environmental Contamination and Toxicology·B FjällborgG Dave
Jul 25, 2008·Ecotoxicology·Wilson A RamírezJosep M Alcañiz
May 21, 2005·Journal of Hazardous Materials·Ying-Xu ChenGuang-Ming Tian
Feb 15, 2011·Biomedical and Environmental Sciences : BES·Man-Hong HuangGuo-Wei Gu
Apr 15, 2014·Environmental Science and Pollution Research International·Xiurong ChenZijian Jiang
Dec 18, 2013·Environmental Science and Pollution Research International·Rebeca ManzanoPaula Alvarenga
Apr 2, 2013·Waste Management·Anu KapanenMerja Itävaara
Feb 24, 2009·Journal of Hazardous Materials·Wan-Xia RenXiao-Jun Li
Feb 7, 2007·Journal of Environmental Sciences (China)·Shun-gui ZhouDi Fang
Aug 28, 2009·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Rajiv K SinhaAshish Brahambhatt
Nov 24, 2006·Water Environment Research : a Research Publication of the Water Environment Federation·M K BanksP Williams
Jul 4, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Attila NagyJános Tamás

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