Heavy Metals Sorption by Drinking Water Treatment Byproducts in Jar Tests
Heavy Metals Sorption by Drinking Water Treatment Byproducts in Jar Tests
复制标题
罐子测试中饮用水处理副产品对重金属的吸附
DOI：
10.1061/9780784480168.004
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Silvius, Alexander A.
中科院分区：
文献类型：
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作者：
Hart, Megan L.;Holmes, Ryan;Kevern, John T.;Silvius, Alexander A.
重金属污染物包括铅、铬、砷、锌、镉、铜和汞，由于它们在地下水中的流动性和溶解性，所有这些都会对人类健康和环境造成重大损害。在美国的中西部，土壤和地下水中的铅、锌和镉是令人关注的主要污染物。虽然存在重金属污染的补救技术，但这些解决方案中的大多数在设计、维护和安装方面都很昂贵。饮用水处理废物（DWTW）是目前填埋的、相对纯净的工业废物副产品，其几乎完全由水净化过程中产生的氧化钙组成。将测量剂量的饮用水处理废物浸没在含有0.01、0.1和1.0毫摩尔浓度的铅、镉和锌的合成地下水溶液中，以确定这种材料是否可以为重金属提供补救措施。此外，还测定了材料的地质力学性质和化学成分。去除率根据内部和外部水含量以及絮凝剂的形成而变化。然而，所有的测试都证实了该材料能够以相对较快的速度去除重金属。该数据表明，当夹带在先前的基质中时，副产物的反应性质吸附穿过基质的溶液中的离子。
Heavy metals contaminants include lead, chromium, arsenic, zinc, cadmium, copper, and mercury all of which can cause significant damage to human health and the environment as a result of their mobility and solubility within groundwater. In the Midwest portion of the United States, soil and groundwater based lead, zinc, and cadmium are the prominent pollutants of concern. While remedial technologies exist for heavy metals pollution, the majority of these solutions are expensive to design, maintain, and install. Drinking water treatment waste (DWTW) is a currently landfilled, relatively pure, industrial waste byproduct composed almost entirely of calcium oxide produced during water purification processes. Measured doses of drinking water treatment waste were submerged in synthetic groundwater solutions containing 0.01, 0.1, and 1.0 millimolar concentrations of lead, cadmium and zinc in order to determine if this material could provide remedial measures for heavy metals. In addition, the geomechanical properties and chemical composition of the material were determined. Removal rates varied based upon internal and external water content as well as flocculant formation. However, all tests verify that the material is capable of heavy metals removal at relatively rapid rates. This data suggests that when entrained in a previous matrix, the reactive nature of the byproduct sorbs ions in solution passing through the matrix.
DOI：
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发表时间：
1972
期刊：
影响因子：
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作者：
E. A. Glysson
通讯作者：
E. A. Glysson