死的钙质骨骼对铅（II）离子的有效去除：吸附性能及影响因素

Effective removal of lead (II) ions by dead calcareous skeletons: sorption performance and influencing factors.

作者信息

Lim Ai Phing, Zulkeflee Zufarzaana, Aris Ahmad Zaharin

机构信息

Environmental Forensics Research Centre, Faculty of Environmental Studies, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia E-mail:

Department of Environmental Sciences, Faculty of Environmental Studies, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

出版信息

Water Sci Technol. 2016 Oct;74(7):1577-1584. doi: 10.2166/wst.2016.368.

DOI:10.2166/wst.2016.368

PMID:27763337

Abstract

Dead calcareous skeletons (CSs) as low-cost adsorbents were studied to remove lead ions (Pb (II)) in an aqueous solution. Factors influencing the efficiency of CSs were evaluated by adsorbent size, contact time, initial concentration, dosage concentration and pH. The optimum CS size for removal of Pb (II) was 710 μm at an equilibrium time of 720 min. The best dosage of CS was 10 g/L for a 99% removal efficiency without pH adjustment. Pb (II) ions were effectively removed in the initial pH of the metal solution. CS was able to remove a high concentration (100 mg/L) of Pb (II) at a removal efficiency of 99.92% and at an adsorption capacity of 13.06 mg/g. Our results demonstrated the potential of CS as a metal adsorbent in the aqueous phase with a high-removal efficiency and distinct physical characteristics.

摘要

研究了作为低成本吸附剂的死态钙质骨骼（CSs）对水溶液中铅离子（Pb (II)）的去除效果。通过吸附剂尺寸、接触时间、初始浓度、剂量浓度和pH值评估了影响CSs去除效率的因素。在720分钟的平衡时间下，去除Pb (II)的最佳CS尺寸为710μm。在不调节pH值的情况下，CS的最佳剂量为10 g/L，去除效率可达99%。在金属溶液的初始pH值下，Pb (II)离子能被有效去除。CS能够以99.92%的去除效率和13.06 mg/g的吸附容量去除高浓度（100 mg/L）的Pb (II)。我们的结果表明，CS作为水相中的金属吸附剂具有去除效率高和物理特性明显的潜力。