Abstract: Torrefied biochrs were produced from the pyrolysis of rubber seed shell, walnut, wood power as well as coconut shell respectively, at 300 ℃. The adsorbents of methylene blue (MB) aqueous solution by four biochars were investigated. The effect of MB of pH, contract time, initial solution concention and adsorbent dosage on the adsorption properties was also estimated. The kinetic data were analysised by the pseudo-first, second-order kinetic and intraparticle diffusion, and the equilibrium data were analyzed using the Langmuir and the Freundlich isotherms models. The results showed that:adsorption equilibrium was reached within 60 min at 298.15 K under the proper pH value between 8.0—12, and the adsorption capacity increasing with the rise of initial MB concentration. While, it was found that the adsorption kinetic followed the second-order mo-del. This suggested that the adsorption of MB by pyrocarbon was a chemisorptions process, and the intraparticle diffusion was not the primary rate-determining step. Besides, Langmuir and the Freundlich isotherms models were all fitting the equilibrium data. The thermodynamics properties showed that adsorption of four biomass was endothermic and spontaneous with the rise of the temperature, the adsorption degree of four biomass pyrocarbon were as followed:walnut shell＞wood power＞coconut shell＞rubber seed shell
郑云武, 陶磊, 康佳, 黄元波, 刘灿, 郑志锋. 不同原料烘焙炭的理化特性及对亚甲基蓝的吸附性能[J]. 材料导报, 2019, 33(8): 1276-1284.
ZHENG Yunwu, TAO Lei, KANG Jia, HUANG Yuanbo, LIU Can, ZHENG Zhifeng. Physicochemical Properties of Torrefied Biochar from Different Biomass Feedstock and Its Adsorption Performance for Methylene Blue. Materials Reports, 2019, 33(8): 1276-1284.
1 Chen W F, Zhang W M, Meng J, et al. Engineering Science, 2011, 130(2), 83(in Chinese). 陈温福, 张伟明, 孟军, 等.中国工程科学, 2011, 130(2), 83. 2 Xie Z B, Liu Q, Xu Y P, et al. Soils, 2012, 4(36), 857(in Chinese). 谢祖彬, 刘琦, 许燕萍, 等.土壤, 2012, 4(36), 857. 3 Han R, Wang Y, Yu W, et al. Journal of Hazardous Materials, 2007, 141, 713. 4 Xu X, Cao X, Zhao L, et al. Environmental Science and Pollution Research, 2013, 20,358. 5 Rao R A K, Khan M A. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2009, 332,121. 6 El Jamal M M, Ncibi M C. Acta Chimica Slovenica, 2012, 59, 24. 7 Chen D, Li R, Bian R, et al. BioResources, 2017, 12,1662. 8 Ma L, Zhu Y, Huang X, et al. In:Conference Record of the 5th Asia Conference on Mechanical and Materials Engineering.Tokyo, 2017,pp.012021. 9 Kim B S, Lee H W, Park S H, et al. Environmental Science and Pollution Research, 2016, 23,985. 10 Lee H W, Park R, Park S H, et al. Carbon Letters, 2016, 18,49. 11 Wang Q, Wang B W, Tan G C, et al. Acta Scientiarum Naturalium Universitatis Pekinensis, 2017, 53(6),1122(in Chinese). 王棋, 王斌伟, 谈广才, 等.北京大学学报 (自然科学版), 2017, 53(6), 1122. 12 Taiwo A F, Chinyere N J. Journal of Materiasl Science and Chemical Engineering, 2016, 4, 39. 13 Essandoh M, Wolgemuth D, Pittman C U, et al. Environmental Science and Pollution Research, 2017, 24,4577. 14 Abdelhadi S O, Dosoretz C G, Rytwo G, et al. Bioresource. Technology, 2017, 244,759. 15 Xu X, Hu X, Ding Z, et al. Chemical. Engineering Journal, 2017, 308,863. 16 Li F, Shen K, Long X, et al. Plos One, 2016, 11, e0148132. 17 Liu P, Ptacek C J, Blowes D W, et al. Journal of Hazardous Materials, 2016, 308,233. 18 Chang C, Liu T Q, Wang Y T, et al. Acta Scientiae Circumstantiae, 2017, 37(7),2680(in Chinese). 常春, 刘天琪, 王瑀婷, 等.环境科学学报, 2017, 37(7),2680. 19 Wu H L, Che X D, Ding Z H, et al. Journal of Agro-Environment Science, 2015 (8), 1575(in Chinese). 吴海露, 车晓冬, 丁竹红, 等.农业环境科学学报, 2015 (8), 1575. 20 Hou S Q, Wang H Z, Sun J X, et al. Chinese Journal Environmental Engineering, 2009, 3(12), 2133(in Chinese). 侯少芹, 王海增, 孙金香, 等.环境工程学报, 2009, 3(12), 2133. 21 Kobya M, Demirbas E, Senturk E, et al. Bioresource Technology, 2005, 96, 1518. 22 Kavitha D, Namasivayam C. Bioresource Technology, 2007, 98, 14. 23 Liu Y, Zhao X, Li J, et al. Desalination and Water Treatment, 2012, 46,115. 24 Ding Z, Wan Y, Hu X, et al. Journal of Industrial Engineering Chemistry, 2016, 37,261. 25 Rafatullah M, Sulaiman O, Hashim R, et al. Journal of Hazardous Materials, 2010, 177,70. 26 Lonappan L, Rouissi T, Das R K, et al. Waste Management, 2016, 49, 537. 27 Ji X Q, Lv L, Chen F, et al. Acta Scientiae Circumstantiae, 2016, 36(5), 1648(in Chinese). 季雪琴, 吕黎, 陈芬, 等.环境科学学报, 2016, 36(5), 1648. 28 Fan S, Tang J, Wang Y, et al. Journal of Molecular Liquids, 2016, 220,432. 29 Khambhaty Y, Mody K, Basha S, et al. Chemical Engineering Journal, 2009, 145(3), 489. 30 Si H Y, Li B, Wang T, et al. Chemistry and Industry of Forest Products, 2013, 33(2), 1(in Chinese). 司红燕, 李斌, 王霆, 等.林产化学与工业, 2013, 33(2),1. 31 Ho Y S, Ofomaja A E. Process Biochemistry, 2005, 40(11), 3455.