title: Da-KGM based GO-reinforced FMBO-loaded aerogels for efficient arsenic removal in aqueous solution.
abstract: Composites based on deacetylated konjac glucomannan (Da-KGM) and graphene oxide (GO) aerogels with iron and manganese oxides (FMBO) for effective removal of arsenic from contaminated water. Da-KGM, which was used as supporting composite matrix here, were firstly treated with GO and loaded FMBO. The obtained Da-KGM/GO/FMBO composite aerogels were characterized by compression test, thermo gravimetric analysis (TGA), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The characteristic results showed that addition of GO exhibited enhanced mechanical properties towards Da-KGM aerogels. What's more, results of FTIR indicated the strong intermolecular hydrogen bond interaction between KGM and GO. Batch adsorption tests were used to evaluate arsenic removal capacity. Da-KGM/GO loaded FMBO composite aerogels exhibited high adsorption ability for arsenite [As(III)] and arsenate [As(V)]. The adsorption results showed that the arsenic for both arsenite [As(III)] and arsenate [As(V)] removal process followed a pseudo-second-order rate equation and Langmuir monolayer adsorption. The maximum As(III) and As(V) uptake capacity of Da-KGM/GO(10%)/FMBO composite aerogels reached 30.21mgg-1and 12.08mgg-1respectively according to Langmuir isotherm at pH 7 and 323K.
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
authors: Shuxin
authors: S
authors: Ye
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
authors: Weiping
authors: W
authors: Jin
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
authors: Qing
authors: Q
authors: Huang
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
authors: Ying
authors: Y
authors: Hu
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China.
authors: Yan
authors: Y
authors: Li
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China. Electronic address: lijingfood@mail.hzau.edu.cn.
authors: Jing
authors: J
authors: Li
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China; Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China; Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, China.
authors: Bin
authors: B
authors: Li
mesh_terms: D000327:Adsorption; D001151:Arsenic / Q000302:isolation & purification*; D019245:Compressive Strength; D005782:Gels; D006108:Graphite / Q000737:chemistry*; D007700:Kinetics; D008351:Mannans / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification
chemical_list: D005782:Gels; D008351:Mannans; D010087:Oxides; D014874:Water Pollutants, Chemical; C022901:(1-6)-alpha-glucomannan; D006108:Graphite; D001151:Arsenic
keywords: Arsenic adsorption; Da-KGM/GO aerogels; FMBO