Nickel Removal from Aqueous Solution in Fixed Bed using Chitosan-Coated Bentonite

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Periodical Articles > Item 310902800/26984

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题名:	Nickel Removal from Aqueous Solution in Fixed Bed using Chitosan-Coated Bentonite
作者:	Futalan, Cybelle Morales Kan, Chi-Chuan Maria Lourdes, P.Dalida Pascua, Chelo Hsien, Kuo-Jung Wan, Meng-Wei
贡献者:	環境工程與科學系
关键词:	BDST model bentonite breakthrough curve chitosan column mass transfer zone
日期:	2011-02
上传时间:	2013-10-16 09:08:41 (UTC+8)
摘要:	The removal of Ni(II) using chitosan-coated bentonite (CHB) from aqueous solutions was investigated under dynamic conditions. The CHB adsorbent was characterized using BET and thermogravimetric analysis. The effect of various experimental parameters such as bed depth (1.3-4.3 cm), flow rate (0.2-0.6 mL min-1), and initial concentration (500-1500 mg L-1) on the service time of the CHB bed and shape of the breakthrough curve was examined. The breakthrough curves become steeper and the bed service time becomes shorter with decreasing bed depth, and increasing flow rate and initial concentration. At bed depth of 4.3 cm, flow rate of 0.2 mL min-1, and initial concentration of 500 mg L-1, the maximum uptake capacity at breakthrough and exhaustion of 15 and 17 mg g-1, respectively, as well as the highest total Ni(II) removal of about 88% was achieved. The bed depth service time model was utilized to predict breakthrough times at various flow rate and initial concentrations. A good agreement is observed between the theoretical and experimental values at time of breakthrough under low flow rates and low initial concentration. But a slight deviation could be seen between the predicted and experimental breakthrough times at higher flow rate and initial concentration.
關聯:	Sustainable Environment Research, 21(6), pp.391-401
显示于类别:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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