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Degradation of Cd, Cu, Fe, Mn, Pb and Zn by Moringa-oleifera, zeolite, ferric-chloride, chitosan and alum in an industrial effluent
Ain Shams Engineering Journal ( IF 6 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.asej.2020.06.016
A.H. Jagaba , S.R.M. Kutty , G. Hayder , L. Baloo , A.A.S. Ghaleb , I.M. Lawal , S. Abubakar , B.N.S. Al-dhawi , N.M.Y. Almahbashi , I. Umaru

Coagulation-flocculation constitute the backbone process in most water and wastewater treatment plants. This study focused on determining the optimum coagulant dose for moringa oleifera seed extract, zeolite, ferric chloride, chitosan and aluminium sulphate coagulants through the coagulation, flocculation and sedimentation process. It also ascertain which coagulant has the potential for higher removal of Cd, Cu, Fe, Mn, Pb and Zn. The test was conducted with initial pH, settling time, coagulant aid dose, rapid mixing speed & time, slow mixing speed & time as constant parameters. The determination of heavy metals concentration in POME was carried out using an Inductively Coupled Plasma (ICP) and an Atomic Absorption Spectrometer (AAS). The process efficiency was assessed in terms of percentage removals for the heavy metals examined. The results proved that chitosan, FeCl3, alum, zeolite and moringa oleifera had the concentrations of 400, 2000, 1000, 1000, and 4000 mg/L as the optimum dosage respectively.



中文翻译:

辣木,沸石,氯化铁,壳聚糖和明矾在工业废水中对Cd,Cu,Fe,Mn,Pb和Zn的降解

混凝-絮凝是大多数水和废水处理厂的骨干过程。这项研究的重点是确定辣木的最佳凝血剂量种子提取物,沸石,氯化铁,壳聚糖和硫酸铝凝结剂经过凝结,絮凝和沉淀过程。还可以确定哪种凝结剂具有更高的去除Cd,Cu,Fe,Mn,Pb和Zn的潜力。以初始pH,沉降时间,助凝剂剂量,快速混合速度和时间,缓慢混合速度和时间作为恒定参数进行测试。使用感应耦合等离子体(ICP)和原子吸收光谱仪(AAS)进行POME中重金属浓度的测定。根据所检查的重金属的去除百分率评估了工艺效率。结果证明壳聚糖,FeCl 3,明矾,沸石和辣木 最佳剂量分别为400、2000、1000、1000和4000 mg / L。

更新日期:2020-10-01
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