:: Volume 23, Issue 1 (4-2015) ::
Journal of Ilam University of Medical Sciences 2015, 23(1): 11-17 Back to browse issues page
Performance evaluation of dried powder activated sludge on adsorption of nickel and determining the adsorption isotherm
Afshin Takdastan1 , Adel Nazarzadeh * 2, Zahra Ramezani1
1- , Ahvaz Jundishapur University of Medical Sciences
2- , Ahvaz Jundishapur University of Medical Sciences , an136869@yahoo.com
Abstract:   (8607 Views)

Introduction: Given the interest in the use of low-cost adsorbent for the removal of heavy metals, the use of higher mud powder from dried sludge drying bed West Wastewater Treatment Plant is located in Ahwaz nickel metal uptake. Materials & methods: Batch experiment was carried out to prepare 100 ml of solution. Samples examined in this study with a synthetic standard solution of nickel were prepared. Adsorption efficiency in primary PH 2 to 8, 5 to 180 minutes of contact time, initial concentration of metal ions, 5, 10 and 50 milligrams per liter adsorbent dose, 0.1, 0.2, 0.5 and 1 mL and mixing speed of 100 rpm The minutes were reviewed. Pretreatment adsorbent comprises drying, grinding machines, and particle size sieve, 50 and 120. Findings: Based on the results of nickel adsorption process, the adsorption efficiency at a concentration of 5 milligrams per liter to 50.64%, and the rate of adsorption efficiency in pH 8, 24.13%, the absorption efficiency of the adsorbent dose 1 g/100mL equal to 30.63% and the adsorption efficiency at 120 minutes 21.59%. Freundlich adsorption isotherm obtained and fitted to the Langmuir model for nickel, respectively. Discussion & Conclusion: The dried, powdered sewage sludge as sorbent available for the removal of nickel from wastewater hasn,t a high efficiency.

Keywords: Powdered activated sludge, Nickel, Biosorption, Adsorption isotherm
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Type of Study: Research | Subject: Environmental health
Received: 2014/01/21 | Accepted: 2014/08/23 | Published: 2015/05/4

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