将PVA和牦牛毛提取的角蛋白进行共混,制备了PVA/角蛋白复合膜,探究其对亚甲基蓝的吸附性能,考察吸附时间、角蛋白含量、温度对PVA/角蛋白复合膜吸附性能的影响。结果表明:该复合膜对亚甲基蓝的吸附量随吸附时间先高速升高后趋于平衡,时间趋近于无穷大时,吸附率高达74.33%左右,随角蛋白含量的增大呈增速减缓的上升趋势,随温度升高不断下降,且在各个温度下的吉布斯自由能ΔG都小于0,该吸附反应都能自发正向进行。PVA/角蛋白复合膜对于Langmuir型分子吸附模型、准二级动力学模型的拟合度更高,说明该吸附过程主要由单分子层的化学吸附来完成。
The PVA/keratin composite membrane was prepared by blending PVA and keratin extracted from yak hair,and its adsorption performance for methylene blue was investigated.The effects of adsorption time,keratin content and temperature on the adsorption performance of PVA/keratin composite membrane were studied.The results showed that the adsorption efficiency of the composite membrane for methylene blue increased rapidly at the beginning and then tended to balance with the adsorption time.When the adsorption time approached infinity,the adsorption rate reached about 74.33%.With the increase of keratin content,the adsorption rate showed an increasing trend but the rate of increase slowed down,and continuously decreased with the increase of temperature.The Gibbs free energy ΔG at various temperatures was less than 0,and the adsorption reaction could be spontaneous and forward.PVA/keratin composite membrane had a higher fit for Langmuir type molecular adsorption model and quasi-second order kinetic model,indicating that chemical adsorption of single molecular layer governed the adsorption process mainly.
[1] 姚庆达,黄鑫婷,周华龙,等.角蛋白/酚磺酸缩合物复合材料对亚甲基蓝的吸附研究[J].皮革与化工,2022,39(2):1-7.
[2] Oladoye P O,Ajiboye T O,Omotola E O,et al.Methylene blue dye:toxicity and potential elimination technology from wastewater[J].Results Eng,2022,16:100678.
[3] 姚庆达.弗氏盐法脱除制革废水中氯离子影响因素分析[J].皮革与化工,2021,38(4):7-11.
[4] Aluigi A,Rombaldoni F,Tonetti C,et al.Study of methylene blue adsorption on keratin nanofibrous membranes[J].Journal of Hazardous Materials,2014,268:156-165.
[5] Yaashikaa P R,Kumar P S,Karishma S.Review on biopolymers and composites-evolving material as adsorbents in removal of environmental pollutants[J].Environmental Research,2022,212:113114.
[6] Fil B A,Ozmetin C,Korkmaz M.Cationic dye (methylene blue) removal from aqueous solution by montmorillonite[J].Bulletin of the Korean Chemical Society,2012,33(10):3184-3190.
[7] 钱迅南,朱笑吉,朱卫明,等.CNC/角蛋白复合膜的制备及其染料吸附性能[J].功能高分子学报,2020,33(2):200-206.
[8] Bin W,Yang W,Mckittrick J,et al.Keratin:structure,mechanical properties,occurrence in biological organisms,and efforts at bioinspiration[J].Progress in Materials Science,2016,76:229-318.
[9] Reddy C C,Khilji I A,Gupta A,et al.Valorization of keratin waste biomass and its potential applications[J].Journal of Water Process Engineering,2021,40:101707.
[10] 郭改萍,田梓赟,郭一泽,等.水溶性PVAL薄膜加工及应用研究进展[J].工程塑料应用,2022,50(8):158-164.
[11] 张鹏飞.海藻酸钠/聚乙烯醇/人发角蛋白的制备及性能研究[D].青岛:青岛大学,2016.
[12] 杨亮,李韦霖,宋鑫钥,等.基于聚乙烯醇复合膜的改性研究进展[J].印染助剂,2022,39(11):5-10.
[13] 晏凤梅,孙凯,尹国强.羽毛角蛋白/聚乙烯醇复合膜的制备和吸水性能[J].仲恺农业工程学院学报,2012,25(2):46-53.
[14] 郑顺姬,隋智慧,曹向禹.角蛋白基吸附剂的研究进展[J].皮革科学与工程,2022,32(1):46-52.
[15] Mahmoud M A.Separation of Cd(Ⅱ) from aqueous solution by keratin magnetic froth carbon in the batch and continuous system[J].Chemical Engineering Research and Design,2021,170(1):339-349.
[16] Mashreghi M,Peiravi R O.Producing bacterial nano-cellulose and keratin from wastes to synthesize keratin/cellulose nanobiocomposite for removal of dyes and heavy metal ions from waters and wastewaters[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2023,656:130355.
[17] Tissera N D,Wijesena R N,Yasasri H,et al.Fibrous keratin protein bio micro structure for efficient removal of hazardous dye waste from water:surface charge mediated interfaces for multiple adsorption desorption cycles[J].Materials Chemistry and Physics,2020,246:122790.
[18] Abbasi F,Yaraki M T,Farrokhnia A,et al.Keratin nanoparticles obtained from human hair for removal of crystal violet from aqueous solution:optimized by Taguchi method[J].International Journal of Biological Macromolecules,2020,143:492-500.
[19] 庄媛,吴小倩,曹张军,等.羽毛不可溶角蛋白海绵膜对Cr(Ⅵ)的吸附性能[J].环境工程学报,2013,7(11):4264-4268.
[20] Su C,Gong J S,Qin J,et al.Glutathione enables full utilization of wool wastes for keratin production and wastewater decolorization[J].Journal of cleaner production,2020,270:122092.
[21] Nikiforova T,Kozlov V,Islyaikin M.Sorption of d-metal cations by keratin from aqueous solutions[J].Journal of Environmental Chemical Engineering,2019,7(5):103417.
基金资助
辽宁省高等学校基本科研重点项目(LZGD2017040)
PDF
