Biological and Physiochemical Techniques for the Removal of Zinc from Drinking Water: A Review

  • Naseem Zahra Pakistan Council of Scientific and Industrial Research Laboratories Complex, Ferozpur Road, Lahore, 54600, Pakistan
  • Yasha Nazir Butt Institute of Biochemistry and Biotechnology, University of the Punjab, 54590, Lahore, Pakistan.
  • Alim Un Nisa Pakistan Council of Scientific and Industrial Research Laboratories Complex, Ferozpur Road, Lahore, 54600, Pakistan

Abstract

Presence of zinc (II) in drinking water beyond permissible limits is considered unsafe for human health. Many different anthropogenic activities including mining, burning of petroleum, industrialization, and urbanization cause a release of considerably higher amounts of zinc into the water bodies. A permissible limit of 5 mg/L is set by various environmental and pollution control authorities beyond which water may cause respiratory, liver, gonads, and brain disorders. Due to these health hazards, it is important to remove exceeding amounts of zinc from drinking water. Zinc enters drinking water from various sources such as corrosive pipelines, release of industrial effluents, and metal leaching. Different biological and physiochemical techniques are used to remove zinc involving chemical precipitation, ion exchange, adsorption, biosorbents, distillation, ozonation, and membrane filtration technology. Among these technologies, physical process of adsorption using low cost adsorbents is not only economical but abundant, efficient, and easily available. In present review different physiochemical and biological techniques are discussed for the removal of zinc from drinking water.

Published
Jun 1, 2015
How to Cite
ZAHRA, Naseem; BUTT, Yasha Nazir; NISA, Alim Un. Biological and Physiochemical Techniques for the Removal of Zinc from Drinking Water: A Review. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 16, n. 2, p. 10, june 2015. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/90>. Date accessed: 23 nov. 2017.