Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation

NWIPB OpenIR

	Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation
	Zheng Pei 1; Zhang Kaiqiang 1; Dang Yu 1; Bai Bo 2; Guan Weisheng 1; Suo Yourui 2; Bai, B (reprint author), Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Peoples R China.
	2015
发表期刊	JOURNAL OF NANOMATERIALS
文章类型	Article
摘要	TiO2@yeast-carbon microspheres with raspberry-like morphology were fabricated based on the pyrolysis method. The obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD). Effects of initial dye concentration and contact time on adsorption capacity of TiO2@yeast-carbon for cationic dye methylene blue (MB) and anionic dye congo red (CR) were investigated. Experimental data were described by Langmuir, Freundlich, Temkin, and Koble-Corrigan isotherm models, respectively. It was found that the equilibrium data of MB adsorption were best represented by Koble-Corrigan, and CR adsorption was best described by both Freundlich and Koble-Corrigan isotherm models. The kinetic data of MB and CR adsorption fitted pseudo-second-order kinetic model well. The results demonstrated that TiO2@yeast-carbon microspheres achieved favorable removal for the cationic MB in comparison with that for the anionic CR. In addition, regeneration experimental results showed that TiO2@yeast-carbon exhibited good recycling stability, reusability, and in situ renewability, suggesting that the as-prepared TiO2@yeast-carbon might be used as the potential low cost alternative for recalcitrant dye removal from industrial wastewater. One possible mechanism for regenerating dye-loaded TiO2@yeast in situ was also proposed.; TiO2@yeast-carbon microspheres with raspberry-like morphology were fabricated based on the pyrolysis method. The obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD). Effects of initial dye concentration and contact time on adsorption capacity of TiO2@yeast-carbon for cationic dye methylene blue (MB) and anionic dye congo red (CR) were investigated. Experimental data were described by Langmuir, Freundlich, Temkin, and Koble-Corrigan isotherm models, respectively. It was found that the equilibrium data of MB adsorption were best represented by Koble-Corrigan, and CR adsorption was best described by both Freundlich and Koble-Corrigan isotherm models. The kinetic data of MB and CR adsorption fitted pseudo-second-order kinetic model well. The results demonstrated that TiO2@yeast-carbon microspheres achieved favorable removal for the cationic MB in comparison with that for the anionic CR. In addition, regeneration experimental results showed that TiO2@yeast-carbon exhibited good recycling stability, reusability, and in situ renewability, suggesting that the as-prepared TiO2@yeast-carbon might be used as the potential low cost alternative for recalcitrant dye removal from industrial wastewater. One possible mechanism for regenerating dye-loaded TiO2@yeast in situ was also proposed.
WOS标题词	Science & Technology ; Technology
关键词[WOS]	RESPONSE-SURFACE METHODOLOGY ; METHYLENE-BLUE ADSORPTION ; AQUEOUS-SOLUTION ; ACTIVATED CARBON ; CONGO-RED ; SOLID-WASTE ; BASIC-DYES ; FLY-ASH ; REMOVAL ; EQUILIBRIUM
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000359584800001
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5470
专题	中国科学院西北高原生物研究所
通讯作者	Bai, B (reprint author), Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Peoples R China.
作者单位	1.Changan Univ, Coll Environm Sci & Engn, Xian 710054, Peoples R China 2.Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Peoples R China
推荐引用方式 GB/T 7714	Zheng Pei,Zhang Kaiqiang,Dang Yu,et al. Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation[J]. JOURNAL OF NANOMATERIALS,2015.
APA	Zheng Pei.,Zhang Kaiqiang.,Dang Yu.,Bai Bo.,Guan Weisheng.,...&Bai, B .(2015).Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation.JOURNAL OF NANOMATERIALS.
MLA	Zheng Pei,et al."Adsorption of Organic Dyes by TiO2@Yeast-Carbon Composite Microspheres and Their In Situ Regeneration Evaluation".JOURNAL OF NANOMATERIALS (2015).