Removal of boron from aqueous solution using magnetic carbon nanotube improved with tartaric acid

Journal of Environmental Health Science Engineering

Thomas SY Choong²  Luqman Chuah Abdullah²  Fariba Mahdavi¹  Nima Zohdi² 

[1] Advanced Materials and Nanotechnology Laboratory, Institute of advanced technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia;Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia

关键词: Magnetic;    Boron removal;    Modification;    Tartaric acid;    Multi-walled carbon nanotube;    Adsorption;   

Others  :  811082
DOI  :  10.1186/2052-336X-12-3

 received in 2013-02-24, accepted in 2013-10-06,  发布年份 2014

【 摘 要 】

Boron removal capacity of multi-walled carbon nanotubes (MWCNTs) modified with tartaric acid was investigated in this study. Modification of MWCNTs with tartaric acid was confirmed by Boehm surface chemistry method and fourier transform infra-red (FT-IR) spectroscopy. Experiments were performed to determine the adsorption isotherm and adsorption thermodynamic parameters of boron adsorption on tartaric acid modified MWCNTs (TA-MWCNTs). The effect of variables including initial pH, dosage of adsorbent, contact time and temperature was investigated. Analysis of data showed that adsorption equilibrium could be better described by Freundlich isotherm and the maximum adsorption capacities obtained at the pH of 6.0 was 1.97 mg/g. The estimated thermodynamic values of free energy (ΔG°), entropy (ΔS°) and enthalpy (ΔH°) indicated a spontaneous and an endothermic process. Furthermore, the TA-MWCNTs was magnetized for separation of boron-contaminated adsorbent from aqueous solution by applying magnetic field. The results showed that magnetic TA-MWCNTs particles were separated effectively after adsorption from contaminated water.

【 授权许可】

   
2014 Zohdi et al.; licensee BioMed Central Ltd.

【 图 表 】

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