The cotton stalk activated carbon(AC) modified by ZnCl2/AlCl3 was prepared with high temperature pyrolysis.It was used to adsorb methyl violet.Exploring the impact about adsorption rate of methyl violet:the dosage of AC,reaction time,concentration of methyl violet,temperature and pH.And exploring the sorption kinetics,the adsorption thermodynamics and the adsorption isotherms.The results showed that the optimum adsorption conditions of methyl violet by AC were as follows:AC dosage was 40mg,the reaction time was 120min,the concentration of methyl violet was 100mg/L,the temperature was 25℃,and the pH was 7.The adsorption process accorded with the pseudo-second-order kinetic equation and Freundlich adsorption isotherm model,the total adsorption rate was controlled by the diffusion of external liquid membrane,and the adsorption process was endothermic entropy adsorption.
Wu Danping, Li Haihong, Zhang Tiantian
. Study on adsorption characteristics of methyl violet by biochar modified by ZnCl2/AlCl3[J]. New Chemical Materials, 2020
, 48(8)
: 227
-231
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.08.050
[1] 景江,肖秀婵,周筝,等.印染废水深度处理技术研究进展[J].印染助剂,2018,35(6):8-12.
[2] 张红美,周岭,李风娟,等.磷酸活化法制备棉秆基活性炭实验优化及其孔隙结构表征[J].塔里木大学学报,2017,29(4):84-89.
[3] 刘晶.生物活性炭及再生技术在废水处理中的应用[J].煤炭加工与综合利用,2016(9):78-80,87.
[4] 张明月,李锋民,卢伦,等.芦苇生物炭对亚甲基蓝的吸附特性研究[J].中国海洋大学学报(自然科学版),2016,46(12):96-103.
[5] Deng H,Li G X,Yang H,et al.Preparation of activated carbons from cotton stalk by microwave assisted KOH and K2CO3 activation[J].Chemical Engineering Journal,2010,163(3):373-381.
[6] 郑梦桃,羊依金,谭显东,等.棉花秸秆制备活性炭及其吸附性能的研究[J].青岛科技大学学报(自然科学版),2016,37(1):18-22.
[7] 杨琴淋,施文健,周艳.棉秸秆活性炭吸附水溶性有机污染物研究[J].功能材料,2012,43(16):2196-2202.
[8] Liu R,Zhang B,Mei D,et al.Adsorption of methyl violet from aqueous solution by halloysite nanotubes[J].Desalination,2011,268(1/3):111-116.
[9] 韩泽群,马荣华.石墨烯负载β3-SiW11Ni对甲基紫的吸附性能研究[J].印染助剂,2018,35(9):53-56.
[10] 管承东,刘瑜,朱林晖,等.P(AA-co-AM)高吸水性树脂对甲基橙和甲基紫混合染料的吸附性能研究[J].山东科技大学学报,2017,36(2):76-80.
[11] 潘一鸣,闫姝,唐欣悦,等.煤矸石微珠的制备及其对甲基紫和孔雀石绿的吸附性能[J].功能材料,2018,49(6):06001-06008.
[12] 杨可,李海红,薛慧,等.不同活化制度对活性炭制备工艺的影响[J].炭素技术,2019,38(2):46-51,64.
[13] 张会平,叶李艺,杨立春.氯化锌活化法制备木质活性炭研究[J].材料科学与工艺,2006,14(1):42-45.
[14] 刘纪江,隋红,王泽利,等.极性VOCs组分在硅胶上的吸脱附性质研究[J].现代化工,2018,38(12):181-185.
[15] Monash P,Pugazhenthi G.Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature[J].Adsorption,2009,15(4):390-450.
[16] Feng Y,Zhou H,Liu G,et al.Methylene blue adsorption onto Swede rape straw (Brassica napus L.) modified by tartaric acid:equilibrium,kinetic and adsorption mechanisms[J].Bioresource Technology,2012,125:138-144.
[17] Hameed B H.Equilibrium and kinetic studies of methyl violet sorption by agricultural waste[J].Hazard Mater,2008,154(1/2/3):204-212.
[18] Qian L,Yue Q Y,Su Y,et al.Equilibrium,thermodynamics and process design to minimize adsorbent amount for the adsorption of acid dyes onto cationic polymer-loaded bentonite[J].Chemical Engineering,2010,458:489-497.
[19] Kuo C Y,Wu C H,Wu J Y,et al.Adsorption of direct dyes from aqueous solutions by carbon nanotubes:determination of equilibrium,kinetics and thermodynamics parameters[J].Colloid and Interface Science,2008,327:308-315.
