A Novel Agricultural Waste Adsorbent, Watermelon Shell for the Removal of Copper from Aqueous Solutions
سال انتشار: 1390
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 830
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شناسه ملی سند علمی:
JR_IJEE-3-2_007
تاریخ نمایه سازی: 1 اردیبهشت 1393
چکیده مقاله:
The present study deals with the application of Watermelon Shell, an agricultural waste, for the adsorptive removal of Cu(II) from its aqueous solutions. This paper incorporates the effects of time, dose,temperature, concentration, particle size, agitation speed and pH. Analytical techniques have been employedto find pore properties and characteristics of adsorbent materials. Batch kinetic and isotherm studies have alsobeen performed to understand the ability of the adsorbents. The adsorption behavior of the Cu(II) has beenstudied using Freundlich, Langmuir and Tempkin adsorption isotherm models. The monolayer adsorptioncapacity determined from the Langmuir adsorption equation has been found as 111.1 mg/g. Kineticmeasurements suggest the involvement of pseudo-second-order kinetics in adsorptions and is controlled by a particle diffusion process. Adsorption of Cu(II) on adsorbents was found to increase on decreasing initial concentration, increasing pH up to 8, increasing temperature, increasing agitation speed and decreasing particle size. Overall, the present findings suggest that watermelon outer shell is environmentally friendly, efficient and low-cost biosorbent which is useful for the removal of Cu(II) from aqueous media.
کلیدواژه ها:
نویسندگان
Koel Banerjee
Department of Civil Engineering,National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
s.t ramesh
Department of Civil Engineering,National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
r gandhimathi
Department of Civil Engineering,National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
p.v Nidheesh
Department of Civil Engineering,National Institute of Technology, Tiruchirappalli, Tamil Nadu, India