Orange Peel as Heavy Metals Absorber

Powerful Essays
Topics: Adsorption
orange peel as heavy metals absorberInternational Journal of Advanced Engineering Technology

E-ISSN 0976-3945

Research Article

STATE OF ART OF BIOSORPTION TECHNIQUE FOR TREATMENT OF HEAVY METALS BEARING WASTES
Dr. Nitin W. Ingole, Sachin V. Dharpal

Address for Correspondence
Professor, Assistant Professor, Civil Engineering Department, Prof Ram Meghe Institute of Technology and Research, Badnera (Amravati) Maharastra – 444701 ABSTRACT
Adsorption is one of the Physico-chemical treatment methods, used in treating water and waste water. Activated carbon is commonly used as an adsorbent for treating the raw waste. But the cost of activated carbon is high; hence this method is not adopted in treatment plants. Adsorption process is possible to remove dissolved solids, B.O.D., C.O.D., Colour, heavy metals, organic acids etc. The prospects of using many low cost materials [available mostly as agricultural, commercial and industrial waste] as adsorbents for pollution abatement have been investigated extensively in recent years. The non conventional adsorbents process remarkable adsorption capacity for the removal of heavy metals like Cd, Cr, Cu, Fe, Hg, Mn, Ni and Pb, surfactants, dyes, colour, organics from the industrial and municipal effluent. This paper represents the review of past work on removal of heavy metals by biosorption by using low cost adsorbents in natural and modified forms. Attempts are also made to cover all methodology and techniques for the removal of heavy metals, BOD, COD and TDS. KEYWORDS Adsorption, biosorption, heavy metals, low cost adsorbents, isotherms

1.1 INTRODUCTION During the 1970’s increasing environmental awareness and concern led to a search for new techniques capable of inexpensive treatment of polluted wastewaters with metals. The search for new technologies involving the removal of toxic metals from wastewaters has directed attention to biosorption, based on binding capacities of various biological materials. Till

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