Abstract: Fe/CTS/AFA composite, prepared by the high-temperature calcination of fly ash (the activated FA, AFA) and the reaction solution with a small amount of Fe(Ⅲ) and chitosan (CTS), was used for the adsorption of Reactive turquoise blue KN-G (RTB KN-G) and Direct sky blue 5B (DSB 5B) dyes from aqueous solutions. The adsorption property of the composite was discussed by studying main factors affecting the adsorption, dynamics, thermodynamics and structural analysis of FT-IR. The results revealed that the adsorbent performance was strongly dependent on the solution pH. Fe/CTS/AFA composite had excellent adsorption performance for RTB KN-G and DSB 5B with the adsorption amounts of 906 mg/g and 635 mg/g under the conditions of the dosage of 0.1 g at 25 ℃ and solution pH of 2.0, which were 31.6 and 15.3 times those of FA, respectively. The adsorption equilibrium can be achieved in 60 min. The adsorption processes for two dyes can be accurately described by the pseudo-second-order adsorption model. Isothermal adsorption data completely accorded with the Langmuir model. Thermodynamic parameters, negative value of Gibbs free energy changes and positive values of enthalpy changes and entropy changes, illustrated that the adsorption of DSB 5B by Fe/CTS/AFA was spontaneous and endothermic nature accompanied by decreasing in order on the liquid-solid interface. Fe/CTS/AFA adsorbent saturated by RTB KN-G dye can be regenerated by 0.01mol/L NaOH solution, and reused 3 times for dye removal from the wastewater. According to the activation energy values obtained by Arrhenius equation and the effect of temperature on the adsorption, it can be inferred that the adsorption was mainly electrostatic and physical action. FT-IR structure analysis demostrated that Fe/CTS/AFA had been successfully prepared and can be used for the effective purification of high-concentration dye wastewater.
李北罡,王 敏. Fe/CTS/AFA复合材料对染料的高效吸附[J]. 《材料导报》期刊社, 2018, 32(10): 1606-1611.
LI Beigang, WANG Min. High Efficient Adsorption of Dyes by Fe/CTS/AFA Composite. Materials Reports, 2018, 32(10): 1606-1611.
1 Su Yu, Fang Huafeng. Research on fly ash policy in China [J]. Clean Coal Technology,2016,22(4):52(in Chinese). 宿宇,方华峰.我国粉煤灰相关政策研究[J].洁净煤技术,2016,22(4):52. 2 Sun Deshuai, Zheng Qiangqiang, Zhang Xiaodong, et al. Adsorption kinetic mechanism of ionic soluble dye mixture on fly ash [J]. Environmental Science,2014,35(7):2590(in Chinese). 孙德帅,郑强强,张晓东,等.粉煤灰对阴离子水溶性混合染料的吸附动力学[J].环境科学,2014,35(7):2590. 3 Ahmaruzzaman M. A review on the utilization of fly ash [J]. Progress in Energy and Combustion Science,2010,36:327. 4 Li Beigang, Hu Qianlong. Adsorption of reactive brilliant blue KN-R by FA/ZnO composite [J]. Journal of China University of Mining ＆Technology,2016,45(2):418(in Chinese). 李北罡,胡潜龙.粉煤灰/ZnO复合材料对活性艳蓝 KN-R的吸附性能[J].中国矿业大学学报,2016,45(2):418. 5 Liu Zhuannian, Liu Yuan. Structure and properties of forming adsorbents prepared from different particle sizes of coal fly ash [J]. Chinese Journal of Chemical Engineering,2015,23(1): 290. 6 Amit Bhatnagar, William Hogland, Marcia Marques, et al. An overview of the modification methods of activated carbon for its water treatment applications [J]. Chemical Engineering Journal,2013,219:499. 7 Liu Yurong, Tu Mingjing, Zhang Jin. Adsorption ability of mesoporous carbon materials for dyes [J]. Materials Review,2012(s1):116(in Chinese). 刘玉荣,涂铭旌,张进.介孔碳材料对染料大分子的吸附性能研究[J].材料导报,2012(s1):116. 8 Deorge Z Kyzas, Margaritis Kostoglou, Nikolaos K Lazaridis. Relating interactions of dye molecules with chitosan to adsorption kinetic data [J]. Langmuir,2010,26(12):9617. 9 Li Ying, Yue Qinyan, Gao Baoyu, et al. Adsorption kinetics of reactive dyes on activated carbon fiber [J]. Environmental Science,2007,28(11):2637(in Chinese). 李颖,岳钦艳,高宝玉,等.活性炭纤维对活性染料的吸附动力学研究[J].环境科学,2007,28(11):2637. 10 Li Beigang, Li Xianhe. Effective adsorption of direct sky blue 5B from aqueous solution by CeO2/Fe2O3/fly ash composite [J]. Chinese Rare Earths,2016,37(5):18(in Chinese). 李北罡,李显和.CeO2/Fe2O3/粉煤灰复合材料对直接湖蓝5B的有效吸附[J].稀土,2016,37(5):18. 11 Lagergren S. About the theory of so-called adsorption of soluble substances [J]. Kungliga Svenska Vetenskap-sakademiens, Handlingar,1898,24(4):1. 12 Ho Y S, Mckay G. Pseudo-second order model for sorption process [J]. Process Biochemistry,1999,34(5):451. 13 Zheng Wenchai, Xin Baoping, Gan Yaling, et al. Studies on penicillium oxalicum growing mycelium sorption to complex-Cu reactive dyes [J]. China Environmental Science,2008,28(2):142(in Chinese). 郑文钗,辛宝平,甘雅玲,等.草酸青霉生长菌体对络铜活性染料吸附的研究[J].中国环境科学,2008,28(2):142. 14 Fang Ping, Shao Ruihua, Ren Juan. Study on the adsorption of direct sky blue 5B using activated carbon[J]. Industrial Safety and Environmental Protection,2011,39(6):54(in Chinese). 房平,邵瑞华,任娟.活性炭对直接湖蓝5B的吸附研究[J].工业安全与环保,2011,39(6):54. 15 Chen Bo, Liu Yang, Zhao Xuesong, et al. Fabrication of polyethy-lenimine functionalized magnetic nanoparticles and its adsorption and separation performance for anionic dyes with anthraquinone structure [J]. Chinese Journal of Analytical Chemistry,2016,44(2):205(in Chinese). 陈波,刘旸,赵雪松,等.聚乙烯亚胺功能化磁性纳米颗粒制备及其吸附分离蒽醌类阴离子染料性能研究[J].分析化学,2016,44(2):205. 16 Zhao Dongyang, Chai Jinpeng. Research of lignite isolated humic acid on adsorption of reactive turquoise blue KN-G [J]. Journal of Liaoning Technical University (Natural Science),2013,32(12):1609(in Chinese). 赵东洋,柴锦鹏.褐煤腐殖酸对废水中活性翠兰KN-G 的吸附实验[J].辽宁工程技术大学学报(自然科学版),2013,32(12):1609. 17 Song Jiyun. The research on adsorption of direct dyes from aqueous solution by cetylpyridinium chloride modified zeolite [D]. Zhengzhou: Zhengzhou University,2011(in Chinese). 宋继赟.氯化十六烷基吡啶改性沸石对直接染料的吸附研究[D].郑州:郑州大学,2011. 18 Chen Arhhwang, Chen Shinming. Biosorption of azo dyes from aqueous solution by glutaraldehyde-crosslinked chitosans [J]. Journal of Hazardous Materials,2009,172:1111. 19 Elwakeel K Z. Removal of reactive black 5 from aqueous solutions using magnetic chitosan resins [J]. Journal of Hazardous Materials, doi: 10.1016/j. jhazmat,2009.01.051. 20 Oepen B Von, K rdel W, Klein W. Sorption of nonpolar and polar compounds to soils: Processes, measurements and experience with the applicability of the modified OECD-guideline 106 [J]. Chemosphere,1991,22:285. 21 Yu Y, Zhuang Y Y, Wang Z H. Adsorption of water-soluble dye onto functionalized resin [J]. Journal of Colloid and Interface Science,2001,242:288. 22 Yue Wena, Zhiru Tanga, Yi Chena, et al. Adsorption of Cr (Ⅵ) from aqueous solutions using chitosan-coated fly ash composite as biosorbent [J]. Chemical Engineering Journal,2011,175:110. 23 Copello G J, Varela F, Vivot R Martinez, et al. Immobilized chitosan as biosorbent for the removal of Cd(Ⅱ), Cr(Ⅲ) and Cr(Ⅵ) from aqueous solutions[J]. Bioresource Technology,2008,99:6538.
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2018, Vol. 32 
