A Review on Materials, Method and Results for Metal Removal from Liquid Effluent

Shaik Jani

Abstract


Removal of heavy metals from industrial effluent is major part of research carried out by researchers to improve the environment and protect human population from adverse effects of industrialization. Zinc, Copper, Manganese and Lead are few of the major heavy metal which finds application in pharmaceutical, paint, catalyst, piping, battery, insecticides and many other industries. Various physical, chemical and biological methods can be used for their removal. Selection of suitable treatment method depends on the concentration of effluent, composition of effluent, available resources, desired final concentration and end use of effluent, disposal method and economic viability. Groundnut husk (GH) and Rice husk (RH) were used as adsorbents to remove Mn2+, Zn2+, Cu (II), Ni and Pb2+ ions from industrial wastewater. Continuous adsorption experiment was conducted to examine the effect of adsorbent mass, pH, temperature and adsorbent combination on adsorption of Mn2+, Zn2+, Cu (II), Ni and Pb2+ from industrial wastewater. The results showed that the adsorption of the metal ions was adsorbent mass, pH, and temperature dependent. The present review is aimed at summarizing various methods used for the removal of these metal ions with respect to methodology, effectiveness and affecting parameters.

 


Keywords


Adsorption; Isotherm; Adsorbents; pH; concentration.

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