以废革屑作为载体,通过戊二醛交联剂将壳聚糖嫁接于革屑上,制备胶原纤维基吸附材料,研究了其对酸性红A-2BF的吸附性能。分析了染料废水的pH、吸附剂用量、染料初始浓度、吸附时间对吸附性能的影响,对该吸附过程建立了适当的模型,描述了其吸附行为,对吸附机理进行了探究,用红外光谱表征了改性前后废革屑的结构。结果表明,在废液初始浓度为100mg/L,pH=4.0,吸附剂添加量为0.05g/100mL条件下吸附2.0h,吸附剂对溶液中染料的吸附率和吸附容量分别达到96.7%和188.2mg/g。该吸附过程符合拟一级动力学和Freundlich等温吸附模型,且为自发的吸热过。FT-IR分析表明,壳聚糖成功接枝到性废铬革屑,可为吸附染料提供吸附位点。
Using leather waste chips as carrier,a collagen fiber-based adsorption material was prepared through loading chitosan onto leather waste chips with glutaraldehyde as cross-linking agent.The adsorption performance of the material for acidic red A-2BF was studied.The effect of the dyeing wastewater pH,adsorbent dosage,initial concentration of dyeing wastewater,and adsorption time on the adsorption performance were analyzed.An appropriate model for the adsorption process was established,its adsorption behavior was described,and the adsorption mechanism was explored.The structure of waste leather chips before and after modification was characterized by infrared spectroscopy.The results showed that the removal ratio and adsorption capacity achieved 96.7% and 188.2mg/g,respectively,after absorption for 2.0h under the conditions of an initial waste solution concentration of 100mL/L,a pH of 4.0,and an adsorbent addition of 0.05g/100mL.The adsorption process conformed to the pseudo first order kinetics and Freundlich isothermal adsorption model,and the adsorption reaction was a spontaneous endothermic process.FT-IR infrared spectroscopy analysis indicated that chitosan was successfully grafted onto chrome leather waste chips,providing adsorption sites for the adsorption of dyes.
[1] 李文燕,刘姝瑞,张明宇,等.印染废水处理技术的研究进展[J].成都纺织高等专科学校学报,2016(4):142-146.
[2] 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(5):116-122.
[3] 顾迎春,郑静,石碧.生物质材料对水体中染料和其他有机污染物的吸附[J].中国医学工程,2009,17(1):19-23.
[4] Nadini S,Carvalho P,Oscar W,et al.Solid leather wastes as adsorbents for cationic andanionic dye removal[J].Environmental Technology,2020,43(9):11-12.
[5] Onenc S,Kilincli O,Ismail C K,et al.Use of solid wastes from the leather industry as an adsorbent[J].Journal of Residuals Science & Technology,2011,8(3):131-139.
[6] Huang X P,Yu F,Peng Q F.Superb adsorption capacity of biochar derived from leather shavings for Congored[J].RSC Advances,2018,8,29781-29788.
[7] Oliveira L C A,Gonçalves M,Oliveira D Q L,et al.Solid waste from leather industry as adsorbent of organic dyes in aqueous-medium[J].Journal of Hazardous Materials,2007,141(1):344-347.
[8] 张米娜,廖学品,石碧.含铬废革屑对水体中染料的吸附[J].中国皮革,2004,33(13):10-13.
[9] 顾迎春,廖学品,王玉路.废弃皮胶原纤维固载金属离子吸附剂对阴离子型染料废水的脱色[J].应用基础与工程科学学报,2008,16(5):648-656.
[10] 强涛涛,罗敏,步巧巧,等.氨基化胶原纤维的制备及其对染料的吸附性能研究[J].皮革科学与工程,2012,22(3):11-16.
[11] 栾俊,刁屾,陈沛海.革屑资源化利用研究进展[J].皮革科学与工程,2016,26(5):28-33.
[12] 郭成,郝军杰,李明阳,等.海藻酸钠/聚乙烯亚胺凝胶球的合成及对Cr(Ⅵ)的吸附性能和机制[J].复合材料学报,2021,38(7):2140-2151.
[13] Shahryari Z,Goharrizi A S,Azadi M.Experimental study of methylene blue adsorption from aqueous solutions onto carbon nanotubes[J].International Journal of Water Resourcesand Environmental Engineering,2010,2(2):16-28.
[14] Sun Z,Liu Y,Huang Y,et al.Fast adsorption of Cd2+ and Pb2+ by EGTA dianhydride(EGTAD) modified ramiefiber[J].Journal of Colloid and Interface Science,2014,434:152-158.
[15] 牛耀岚.新型壳聚糖纤维材料的制备及其对重金属离子的吸附研究[D].上海:上海交通大学,2017.
[16] 曹玮,周航,邓贵友,等.改性谷壳生物炭负载磁性Fe去除废水中Pb2+的效果及机制[J].环境工程学报,2017,11(3):1437-1444.
[17] Štefelová J,Slovak V,Siqueira G,et al.Drying and pyrolysis of cellulose nanofibers from wood,bacteria and algae for char application in oil absorption and dyes adsorption[J].ACS Sustainable Chemistry & Engineering,2017,5(3):2679-2692.
基金资助
黑龙江省省属本科高校基本科研业务费科研项目(145109122)
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