Paper Information

Title: 

ADSORPTION OF DYES AND HEAVY METAL IONS BY CHITOSAN COMPOSITES: A REVIEW

Type: PAPER
Author(s): BAKHSHI JAVAD,PARVINI MEHDI*,ESFANDIAN HOSSEIN
 
 *SCHOOL OF CHEMICAL, PETROLEUM AND GAS ENGINEERING SEMNAN UNIVERSITY, SEMNAN, IRAN
 
Name of Seminar: INTERNATIONAL CONFERENCE OIL, GAS, PETROCHEMICAL AND POWER PLANT
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVONI AMOZESHI PAZHOHESHI VESTA
Date:  2012Volume 1
 
 
Abstract: 

VARIOUS ADSORBENTS HAVE BEEN USED TO REMOVE DIFFERENT TYPES OF DYES FROM WASTEWATER SUCH AS ANIONIC AZO DYE, METHYLENE BLUE, ETC. ACTIVATED CARBONS, PLANT OR LIGNOCELLULOSIC WASTES, CLAYS AND CLAY MINERALS, BOTTOM ASH, ZEOLITE, SILICA GEL, OIL PALM TRUNK FIBER, CELLULOSE POWDER, RATTAN SAWDUST, RICE HUSK, TEA WASTE, VARIOUS RESINS, MICROORGANISMS, AND BIOPOLYMERS ARE AMONG THE COMMON ADSORBENTS USED. CHITOSAN A TYPE OF BIOPOLYMER IS A GOOD ADSORBENT TO REMOVE VARIOUS KINDS OF ANIONIC AND CATIONIC DYES. CHEMICAL MODIFICATIONS THAT LEAD TO THE FORMATION OF CHITOSAN DERIVATIVES, GRAFTING CHITOSAN AND CHITOSAN COMPOSITES HAVE GAINED MUCH ATTENTION, EXTENSIVELY STUDIED AND WIDELY REPORTED IN THE LITERATURES. THIS REVIEW PROVIDES RELEVANT LITERATURE OF THE PAST TWO YEARS ON THE APPLICATION OF CHITOSAN COMPOSITES FOR REMOVING DYES ACTIVATION.
THE DYE ADSORPTION CAPACITIES OF CHITOSAN COMPOSITES ADSORBENTS VARY, DEPENDING ON THE PH OF SOLUTION, INITIAL DYE CONCENTRATION, ADSORBENT DOSAGE AND PROCESS TEMPERATURE. THIS REVIEW ALSO INCLUDES DESORPTION AND REUSABILITY, KINETIC MODELS AND ADSORPTION ISOTHERMS.

 
Keyword(s): 
 
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