Comparison of Activated carbon, Sawdust, Shell almond and hazelnut Adsorptions for removal of Nickel from aqueous solution

Mohammadi Galehzan, M. (2010) Comparison of Activated carbon, Sawdust, Shell almond and hazelnut Adsorptions for removal of Nickel from aqueous solution. Masters thesis, University of Zabol.

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Currently, one of the major environmental pollutants is industrial effluents containing heavy metals. More than 40 percent of nickel in the environment through industrial plants and building battery production play a part in the contaminated groundwater. The main objective of this research to reduce nickel ions from wastewater by activated carbon absorbent, sawdust, hazelnut and almond shell is. Another purpose of this research is to evaluate the effect of specific surface on the time of absorption and absorption capacity. For this first Super absorbent preparation and testing of pH sorbent was performed for all four. Then the test related kinetics absorption at different concentrations (2.5, 5, 10, 50 and 125 mg/L) was performed. Finding more Sorption isotherm experiments at laboratory temperature and PH were optimized, kinetics models of Ho et al (1996), Lagergern (1893) and Evrami of the data Isotherms Kinetics and Langmuir models, Freundlich and Redlich Peterson of the data Isotherms four absorber was fitted. Test results showed that the PH maximum absorption at pH=6 for activated carbon is 7.92 mg/g hazelnut crust 7.68 mg/g sawdust and 5.47 mg/g. Also, for the almond crust, the maximum absorption in the pH=7 equals to 5.34 mg/g. Test results showed that all Kinetics the Time balance Maximum input balance for nickel concentration is 5 mg/L respectively of activated carbon adsorbent, hazelnut shells, sawdust and peanut shells at 60, 75, 120 and 150 minutes respectively. Decreasing solution concentrations of 2.5 to 5 mg/l and the concentration solution of 5 to 125 mg/l, the time to balance reach absorption process for all four absorbent decreases findings so that the time balance for four absorbent join together to. Kinetics fitting results showed that the models correlation coefficient and error factor in all four adsorbent concentration 2.5 mg/l, both models and Evram Lagergern Kinetics data capture and model of. Isotherms Redlich Peterson Isotherms given by to attract better described. Effect of surface area and absorption capacity increases absorption time balance, absorptive surface area, maximum balance and reduces absorption and absorptive capacity.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Nickel, sawdust, hazelnut shell, almond shell, activated carbon, Kinetics, Isotherms
Subjects: S Agriculture > S Agriculture (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Depositing User: admin admin1 admin2
Date Deposited: 27 Apr 2016 07:32
Last Modified: 27 Apr 2016 07:32

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