Metal sulphides from wastewater: assessing the impact of supersaturation control strategies

Water Research
T P MokoneA E Lewis

Abstract

Metal sulphide precipitation forms an important component of acid mine drainage remediation systems based on bacterial sulphate reduction. However, the precipitation reaction is inherently driven by very high levels of supersaturation with the generation of small particles with poor solid-liquid separation characteristics. In this study, the effect of strategies used to manage supersaturation was investigated during copper and zinc sulphide precipitation reactions. Initial batch studies showed the origin of sulphide (biological or chemical) had no significant effect on the efficiency of zinc sulphide precipitation. For copper, low metal removal efficiency was obtained at metal to sulphide molar ratios below 1.6 in the synthetic sulphide system. This was improved in the biogenic sulphide system, due to the presence of residual volatile fatty acids, but the presence or absence of particulate organic matter had no effect on recovery. Subsequent studies, conducted using synthetic sulphide solutions in a seeded fluidised bed reactor with multiple reagent feed points (2FP and 6FP) and different recirculation flow rates (300 and 120 mL min(-1)) showed efficient zinc sulphide precipitation, but limited (<10%) deposition on the seeds. I...Continue Reading

References

Oct 1, 1988·Archives of Sexual Behavior·B J Randolph, B Winstead
Oct 27, 2004·Chemosphere·Chia-I LeeCheng-I Hsieh
Jun 30, 2009·Water Research·Oluwaseun O OyekolaSusan T L Harrison
Aug 14, 2010·Journal of Colloid and Interface Science·T P MokoneA E Lewis

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Citations

Apr 24, 2013·Journal of Environmental Management·X L ZhangR Y Surampalli
Sep 13, 2015·World Journal of Microbiology & Biotechnology·T P H van den BrandM C M van Loosdrecht
Aug 24, 2016·Applied Microbiology and Biotechnology·João Pinto da CostaTeresa Rocha-Santos
Jan 6, 2017·Environmental Science and Pollution Research International·Hongliang DaiHuaqing Zhsssu
Oct 24, 2019·Environmental Science and Pollution Research International·Zhihui YangWenxiang Guo
May 17, 2018·Environmental Science and Pollution Research International·Liyuan ChaiXu Yan

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