Paper Information

Journal:   GEOCHEMISTRY   SPRING 2014 , Volume 3 , Number 1; Page(s) 419 To 425.
 
Paper: 

REMOVAL OF SOME IONS FROM WASTEWATER BY USING ORGANIC AND INORGANIC ABSORBENTS

 
 
Author(s):  MOHAMMADI SARDU ASMA*, YAZDANPANAH NAJME
 
* DEPARTMENT OF WATER ENGINEERING, ISLAMIC AZAD UNIVERSITY, KERMAN BRANCH, KERMAN, IRAN
 
Abstract: 

Due to the recent drought and indiscriminate use of groundwater in Kerman province, the reclamation of water quality is an important issue. Therefore, this study was done to remove calcium, magnesium, chloride and bicarbonate ions from wastewater by using pistachio shell and sawdust as organic absorbents and bentonite and zeolite as inorganic absorbents. In this regard, five treatments including; sand filter, sand-pistachio shell filter, sand-sawdust filter, sand-zeolite filter and sand-bentonite filter were applied. The results showed that the highest absorption of calcium (27.2%) and chloride (12.35%) was done by zeolite, which was attributed to the anionic adsorption. Also, the maximum absorption of magnesium (7.43%) was observed by pistachio shell, which was related to the cellulose surfaces of this absorbent negatively charged in water. The maximum absorption of bicarbonate (28.74%) was found by bentonite, which was demonstrated by two mechanisms of absorption and deposition. In general, among the applied organic and inorganic treatments, respectively pistachio shell and zeolite found as the best absorbents in the ions removal from wastewater. Also, comparison result indicated that inorganic adsorbents had higher efficiency than organic absorbents in removing calcium, magnesium, chloride and bicarbonate from wastewater.

 
Keyword(s): WASTEWATER, PURIFICATION, ORGANIC ABSORBENT, INORGANIC ABSORBENT
 
References: 
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