NDLI: Process optimization for treatment of methyltin mercaptide effluents using modified semi-coke

Content Provider	Springer Nature Link
Author	Wang, Xin Srinivasakannan, C. Qu, Wen wen Peng, Jin hui Zhang, Li Bo Duan, Xin hui Lu, Shuai dan
Copyright Year	2013
Abstract	The central composite process optimization was performed by response surface methodology technique using a design for the treatment of methyltin mercaptide with modified semi-coke. The semi-coke from the coal industry was suitably modified by treating it with phosphoric acid, with a thermal activation process. The objective of the process optimization is to reduce the chemical oxygen demand (COD) and NH 4 + -N in the methyltin mercaptide industrial effluent. The process variables considered for process optimization are the semi-coke dosage, adsorption time and effluent pH. The optimized process conditions are identified to be a semi-coke dosage of 80 g/L, adsorption time of 90 min and a pH value of 8.34. The ANOVA results indicate that the adsorbent dosage and pH are the significant parameters, while the adsorption time is insignificant, possibly owing to the large range of adsorption time chosen. The textural characteristics of modified semi-coke were analyzed using scanning electron microscopy and nitrogen adsorption isotherm. The average BET surface area of modified semi-coke is estimated to be 915 m$^{2}$/g, with the average pore volume of 0.71 cm$^{3}$/g and a average pore diameter of 3.09 nm, with micropore volume contributing to 52.36%.
Starting Page	3633
Ending Page	3640
Page Count	8
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	20
Issue Number	12
e-ISSN	22275223
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-12-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	modified semi-coke semi-coke optimization water treatment chemical oxygen demand (COD) NH 4 + -N Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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