Farayandno

Farayandno

A Review on the Adsorption of Heavy Metals Ion from Industrial Wastewater with Biosorbents

Document Type : Review

Authors
1 Assistant Professor, Chemical Engineering Faculty, Urmia University, Urmia, Iran
2 B.Sc. Student, Chemical Engineering Faculty, Urmia University, Urmia, Iran
Abstract
In this article, the removal of heavy metal ions from water environments with an environmentally friendly method is discussed. Industrial effluents contain toxic heavy metals such as mercury, lead, cadmium and chromium (VI); Copper, nickel, cobalt and zinc are not toxic, but increasing their amount in the environment is a serious concern. The adsorption capacity of different biosorbents is affected by several factors, including pH, temperature, contact time, biomass dose, and the initial concentration of heavy metals. Also, biosorption kinetics and isotherms are also investigated. Banana peel in agricultural residues and Chlorella minotissima in algae, fungi and bacteria showed a high adsorption capacity. The pseudo-second-order kinetic model showed a high correlation coefficient. Therefore, it is chemical adsorption in which metal ions stick to the adsorbent surface by forming a chemical bond. The Langmuir model has a better fit with the experimental data, which indicates the adsorption of a single layer.
Keywords

Subjects


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