浮选法在负载金属沸石分离中的应用。

Application of flotation for the separation of metal-loaded zeolites.

作者信息

Matis Kostas A, Zouboulis Anastasios I, Gallios George P, Erwe Torsten, Blöcher Christoph

机构信息

Section of Chemical Technology and Industrial Chemistry, School of Chemistry, Aristotle University, P.O. Box 116, GR-541 24 Thessaloniki, Greece.

出版信息

Chemosphere. 2004 Apr;55(1):65-72. doi: 10.1016/j.chemosphere.2003.11.030.

DOI:10.1016/j.chemosphere.2003.11.030

PMID:14720548

Abstract

Several industrial wastewater streams may contain heavy metal ions, which must be effectively removed, before the discharge or reuse of treated waters could take place. Different bonding materials, presenting selectivity and fast reaction kinetics for the removal of metals, have been examined for this purpose. The objective of the present paper was to investigate the application of dispersed-air flotation for the separation of metal-loaded sorbents. Two similar zeolite samples were applied as effective bonding agents for the removal of zinc, a toxic metal commonly found in many industrial wastewaters. This combined process, termed sorptive flotation, involves the preliminary scavenging of metal ions, by using the appropriate sorbent particles (usually present as ultrafine particulates), followed by flotation for the effective separation of them. The obtained results were very promising, as both metal and sorbent were effectively removed/separated from the dispersion.

摘要

几种工业废水流中可能含有重金属离子，在处理后的水排放或再利用之前，必须有效地去除这些重金属离子。为此，人们研究了不同的具有选择性和快速反应动力学的用于去除金属的粘结材料。本文的目的是研究分散空气浮选法在分离负载金属的吸附剂方面的应用。两种类似的沸石样品被用作有效的粘结剂来去除锌，锌是许多工业废水中常见的有毒金属。这个联合过程，称为吸附浮选，包括先用合适的吸附剂颗粒（通常以超细颗粒形式存在）初步清除金属离子，然后通过浮选有效地分离它们。所获得的结果非常有前景，因为金属和吸附剂都能从分散液中被有效去除/分离。