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首页> 外文期刊>Environmental Science & Technology >Characterization, Recovery Opportunities, and Valuation of Metals in Municipal Sludges from U.S. Wastewater Treatment Plants Nationwide
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Characterization, Recovery Opportunities, and Valuation of Metals in Municipal Sludges from U.S. Wastewater Treatment Plants Nationwide

机译：美国全国污水处理厂的市政污泥中金属的特性，回收机会和评估

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摘要

U.S. sewage sludges were analyzed for 58 regulated and nonregulated elements by ICP-MS and electron microscopy to explore opportunities for removal and recovery. Sludge/water distribution coefficients (K_D, L/kg dry weight) spanned 5 orders of magnitude, indicating significant metal accumulation in biosolids. Rare-earth elements and minor metals (Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) detected in sludges showed enrichment factors (EFs) near unity, suggesting dust or soils as likely dominant sources. In contrast, most platinum group elements (i.e., Ru, Rh, Pd, Pt) showed high EF and K_D values, indicating anthropogenic sources. Numerous metallic and metal oxide colloids (＜ 100-500 run diameter) were detected; the morphology of abundant aggregates of primary particles measuring ＜100 run provided clues to their origin. For a community of 1 million people, metals in biosolids were valued at up to US$13 million annually. A model incorporating a parameter (K_D×EF×$Value) to capture the relative potential for economic value from biosolids revealed the identity of the 13 most lucrative elements (Ag, Cu, Au, P, Fe, Pd, Mn, Zn, Ir, Al, Cd, Ti, Ga, and Cr) with a combined value of US $280/ton of sludge.
机译：通过ICP-MS和电子显微镜对美国污水污泥中的58种调节和非调节元素进行了分析，以探索去除和回收的机会。污泥/水的分配系数（K_D，L / kg干重）跨越5个数量级，表明生物固体中大量金属积累。在污泥中检测到的稀土元素和微量金属（Y，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu）显示富集因子（EFs）接近于一，表明灰尘或土壤可能是主要来源。相反，大多数铂族元素（即Ru，Rh，Pd，Pt）显示出较高的EF和K_D值，表明是人为来源。检测到许多金属和金属氧化物胶体（行程直径小于100-500）； ＜100 run的一次颗粒丰富聚集体的形态提供了其起源的线索。对于一个拥有100万人的社区来说，生物固体中的金属每年价值高达1300万美元。结合参数（K_D×EF×$ Value）来捕获生物固体中经济价值的相对潜力的模型揭示了13种最有利可图的元素（Ag，Cu，Au，P，Fe，Pd，Mn，Zn，Ir ，Al，Cd，Ti，Ga和Cr），每吨污泥的总价值为280美元。

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  • 来源
    《Environmental Science & Technology》 |2015年第16期|9479-9488|共10页
  • 作者

    Paul Westerhoff; Sungyun Lee; Yu Yang; Gwyneth W. Gordon; Kiril Hristovski; Rolf U. Halden; Pierre Herckes;

  • 作者单位

    School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States;

    School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States;

    School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States;

    School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287-1404, United States;

    The Polytechnic School, Ira A. Fulton Schools of Engineering, Arizona State University, Peralta Hall 330A, 7171 E. Sonoran Arroyo Mall, Mesa, Arizona 85212-2180, United States;

    School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States ,Center for Environmental Security, The Biodesign Institute at Arizona State University, Security and Defense Systems Initiative, 781 E. Terrace Mall, Tempe, Arizona 85287-5904, United States;

    Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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