纤维基海绵碳材料的制备及其对氯酚类物质的去除效果研究  

Study on the Preparation of Fiber-based Sponge Carbon Materials and Their Removal Effect on Chlorophenols

作　　者：刘令奇 岩拉罕 杨芯 李祖文 梁胜 何亮 LIU Lingqi;AI Lahan;YANG Xin;LI Zuwen;LIANG Sheng;HE Liang(College of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500

出　　处：《纤维素科学与技术》2024年第4期19-26,共8页Journal of Cellulose Science and Technology

基　　金：云南省重点研发计划课题(项目号:202303AC100002)。

摘　　要：以高度角质化的废纸纤维为原料,经打浆、分散成型和碳化制备出具有高效吸附性能的海绵状纤维基块体碳材料,研究了其对氯酚类化合物的吸附行为。运用BET、SEM、FT-IR等表征技术,结合吸附动力学和等温吸附分析等研究,揭示了该材料微观结构与其吸附性能之间的内在关联。研究发现,此材料具有高比表面积和良好的孔隙结构,对氯苯酚的吸附在4 h可达平衡,去除率达87.6%,吸附过程更加符合准二级动力学模型,是以化学吸附为主。此外,该材料表现出良好的循环稳定性,历经五次使用后吸附效率仍达到79.4%,运用于实际漂白废水的处理时,废水中氯酚去除率约为77.8%。该研究提供了一种废纸纤维的高值化利用途径,为漂白废水的净化提供参考。Using highly keratinized waste paper fibers as raw materials,sponge-like fiber-based bulk carbon materials with high adsorption performance were prepared through processes such as pulping,dispersion molding,and carbonization.The adsorption behavior of these materials towards chlorophenol compounds was investigated.By employing characterization techniques like BET,SEM,and FT-IR,combined with studies on adsorption kinetics and isothermal adsorption analysis,the inherent relationship between the microscopic structure of the materials and their adsorption properties was revealed.It was found that this material had a high specific surface area and a favorable pore structure.The adsorption of chlorophenol could reach equilibrium within 4 hours,with a removal rate of 87.6%.The adsorption process conformed more to the pseudo-second-order kinetic model,indicating that it was mainly chemisorption.Moreover,the material exhibited good cyclic stability,and its adsorption efficiency still reached 79.4%after five cycles of use.When applied to the treatment of actual bleaching wastewater,the removal rate of chlorophenols in the wastewater was approximately 77.8%.This research provides a high-value utilization approach for waste paper fibers and offers a reference for the purification of bleaching wastewater.

关 键 词：废纸纤维 角质化 吸附 氯酚 以废治废 

分 类 号：TS724[轻工技术与工程—制浆造纸工程]