Adsorption of Zn (II) from aqueous solution by using chitin extraction from crustaceous shell
Journal Title: Journal of Advances in Environmental Health Research (JAEHR) - Year 2014, Vol 2, Issue 2
Abstract
Removal of toxic heavy metals from wastewater is an important environmental challenge. In this Study, Zn (II) removal from aqueous solution by chitin extraction from crustaceous shells (shrimp and crab) was investigated. The biosorption studies were determined as a function of contact time, pH, initial metal concentration, and the amount of adsorbent. Adsorption of Zn (II) increased with decreasing concentration of the adsorbents and reached maximum uptake at 0.5 g. Effect of pH was studied in the range of 3-7 and the optimum conditions for both adsorbents were found in the range of 5-7. Zn (II) adsorption for both adsorbent was evaluated by Langmuir and Freundlich Isotherms. Results indicated that the Freundlich isotherm model was the most suitable one for the adsorption process using chitin extracted of shrimp and crab shells. The pseudo-first order and pseudo second order kinetic models were used to describe the kinetic data. The adsorption capacity (qmax) calculated from Langmuir isotherm and the values of the correlation coefficient obtained showed that chitin extracted from shrimp shells has the largest capacity and affinity for the removal of Zn (II) compared with the chitin extraction from the crab shells.
Authors and Affiliations
Nematollah Jaafarzadeh, Nezamaddin Mengelizadeh, Afshin Takdastan, Mohammad Heidari-Farsani, Noureddin Niknam
Keywords
Related Articles
- EP ID EP418221
- DOI 10.22102/JAEHR.2014.40151
- Views 155
- Downloads 0
Biodegradation of methylene blue from aqueous solution by bacteria isolated from contaminated soil
The use of biodegradation methods by microorganisms in the removal of industrial dyes are widely considered owing to their high efficiency and compatibility to the environment. Therefore, this study aims to evaluate the...
Fabrication of ultrathin graphene oxide-coated membrane with hydrophilic properties for arsenate removal from water
Terms and conditions of current drinking water quality standards, including reducing the maximum arsenic concentration from 50 μgl-1 to 10 μgl-1 and predicted stricter standards in future, reveals the necessity for devel...
Optimization of ammonia removal in an integrated fix-film activated sludge using response surface methodology
In this work, removal of ammonia from synthetic wastewater using integrated fixed-film activated sludge (IFAS) process was optimized using response surface methodology (RSM). The main operating parameters such as ammonia...
Disinfection byproducts in swimming pool water in Sanandj, Iran
The present study aimed to determine the concentrations of several disinfection byproducts (DBPs), including trihalomethanes (THMs), haloacetic acids (HAAs), and haloacetonitriles (HANs), in the public and private swimmi...
Survey of fungal flora in the water of old and new distribution System in Aradan city
One of the great concerns of potable water consumers regarding its quality is the pollution of potable water with pathogenic microorganisms. Fungi in drinking water are responsible for changing the taste and odor of wate...