Department of Analytical and Food Chemistry, University of Vienna, Währingerstrasse 38, A-1090, Vienna, Austria.
Water Environ Res. 2010 Feb;82(2):183-6. doi: 10.2175/106143009x442907.
The most appropriate systems for treatment of metal-contaminated waters are bioreactors with microbial biofilms. A horizontal rotating tubular bioreactor (HRTB) was studied for its applicability for removing copper, iron, nickel, and zinc (Cu, Fe, Ni, and Zn) from wastewater. Monitoring of the concentrations of Cu, Fe, Ni, and Zn by a fast, simple, onsite method was needed to make decisions for further optimization. The UV-VIS spectrophotometric quantification of Cu, Fe, Ni, and Zn using sodium diethyldithiocarbamate, 1,10-phenathroline, dimethylglyoxime, and 2-{[alpha-(2-Hydroxy-5-sulfophenylazo)-benzylidene]-hydrazino}-benzoic acid monosodium salt (=zincon monosodium salt) as reagents, respectively, was optimized and validated. The limits of quantification were 0.14, 0.12, 0.21, and 0.03 mg/L for Cu, Fe, Ni and Zn, respectively. The recovery for all elements was between 98 and 104%, the uncertainty of measurement was less than 6%. Depending on the reactor parameters applied, metal removals from 40 to more than 90% could be obtained.
最适合处理受金属污染水的系统是带有微生物生物膜的生物反应器。研究了一种水平旋转管式生物反应器 (HRTB)，以评估其从废水中去除铜、铁、镍和锌 (Cu、Fe、Ni 和 Zn) 的适用性。需要一种快速、简单、现场的方法来监测 Cu、Fe、Ni 和 Zn 的浓度，以便做出进一步优化的决策。使用二乙二硫代氨基甲酸钠、1,10-邻菲啰啉、丁二酮肟和 2-[[α-(2-羟基-5-磺基苯基偶氮)-亚苄基]肼基]-苯甲酸单钠盐 (=锌试剂单钠盐) 分别作为试剂对 Cu、Fe、Ni 和 Zn 进行了 UV-VIS 分光光度定量优化和验证。Cu、Fe、Ni 和 Zn 的定量下限分别为 0.14、0.12、0.21 和 0.03 mg/L。所有元素的回收率在 98%至 104%之间，测量不确定度小于 6%。根据应用的反应器参数，金属去除率可达到 40%至 90%以上。
