The sorption of two organic dyes,Rhodamine B (RB) and acid red 1 (AR) by Ginkgo biloba biochar (GBBC) at pyrolytic temperature 700℃ were studied.The effective factors such as pH,contact time,initial concentration and adsorbent dosage were also discussed.The properties of samples were characterized by SEM and BET.The results showed that GBBC was an ideal absorbent for RB and AR removal characterized by wide adaption range of pH (from 2 to 12).The removal rate of RB was up to 99.61%,when the condition with an initial RB concentration of 150 mg/L,contact time of 55min and GBBC dosage of 0.3g,then AR removal rate was 97.81% (initial concentration 100mg/L,contact time 120min,biochar dosage 0.3g).The dynamic adsorption behavior of RB was more consistent with the pseudo-secong-order kinetic model (R2=0.9534),and kinetic of AR could be well described by Elovich model (R2=0.9655).The equilibrium sorption data were best described by the Langmuir-Freundlich (R2=0.9888) and Langmuir (R2=0.9923) model for RB and AR,respectively.GBBC was an efficient adsorbent,but the sorption mechanisms of biochar for RB and AR were different.
Zhang Penghui, Li Yanchun, Hu Haobin, Hu Huaisheng, Gai Ke
. Sorption property of different dyes by ginkgo biloba biochar[J]. New Chemical Materials, 2020
, 48(9)
: 212
-217
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.046
[1] Yagub M T,Sen T K,Afroze S,et al.Dye and its removal from aqueous solution by adsorption:a review[J].Advances in Colloid and Interface Science,2014,209(7):172-184.
[2] 贾凡,桂澄,王赏,等.萃取法处理模拟拼色染料染色废水的研究[J].印染,2018,44(16):14-18.
[3] Vanitha K,Jibrail K,Yon L S.Efficiency of various recent wastewater dye removal methods:a review[J].Journal of Environmental Chemical Engineering,2018,6:4676-4697.
[4] Gupta V K,Suhas.Application of low-cost adsorbents for dye removal—a review[J].Journal of Environmental Management,2009,90(8):2313-2342.
[5] 杨国华,黄统琳,姚忠亮,等.吸附剂的应用研究现状和进展[J].化学工程与装备,2009,6:84-88.
[6] Sewu D D,Boakye P,Woo S H.Highly efficient adsorption of cationic dye by biochar produced with Korean cabbage waste[J].Bioresource Technology,2017,224:206-213.
[7] Dai L C,Zhu W K,He L,et al.Calcium-rich biochar from crab shell:an unexpected super adsorbent for dye removal[J].Bioresource Technology,2018,267:510-516.
[8] Mui E L K,Cheunga W H,Valixb M,et al.Dye adsorption onto char from bamboo[J].Journal of Hazardous Materials,2010,177(1-3):1001-1005.
[9] 张鹏会,李艳春,胡浩斌,等.银杏叶生物炭对亚甲基蓝的吸附特性[J].环境污染与防治,2017,39(11):68-73.
[10] 王章鸿,郭海艳,沈飞,等.蚯蚓粪便制备生物炭及其对罗丹明B吸附的研究[J].环境科学学报,2015,35(10):3170-3177.
[11] Jain R,Mathur M,Sikarwar S,et al.Removal of the hazardous dye rhodamine B through photocatalytic and adsorption treatments[J].Journal of Environmental Management,2007,85(4):956-964.
[12] Hoy S,Mckay G.Pseudo-second order model for sorption processes[J].Process Biochemistry,1999,34(5):451-465.
[13] Qiu H,Lv L,Pan B C,et al.Critical review in adsorption kinetic models[J].Journal of Zhejiang University Science A,2009,10(5):716-724.
[14] 金健,张智宏,白鸿帆.γ-Fe2O3/AC脱硫剂的制备及低温脱除CS2性能[J].化工进展,2018,37(11):4397-4404.
[15] 季雪琴,吕黎,陈芬,等.秸秆生物炭对有机染料的吸附作用及机制[J].环境科学学报,2016,36(5):1648-1654.
[16] Zhou X H,Zhou J J,Liu Y C,et al.Preparation of iminodiacetic acid-modified magnetic biochar bycarbonization,magnetization and functional modification for Cd(Ⅱ) removal in water[J].Fuel,2018,233:469-479.
[17] Hameed B H,Tan I A W,Ahmad A L.Adsorption isotherm,kinetic modeling and mechanism of 2,4,6-trichlorophenol on coconut husk-based activated carbon[J].Chemical Engineering Journal,2008,144(2):235-244.
[18] 文永林,刘攀,汤琪.农林废弃物吸附脱除废水中重金属研究进展[J].化工进展,2013,35(4):1208-1215.
[19] 马锋锋,赵保卫,刁静茹,等.牛粪生物炭对水中氨氮的吸附特性[J].环境科学,2015(5):1678-1685.
