细菌纤维素（BC）对甲醛的吸附性能的研究.pdfVIP

学兔兔 江苏建筑 201 1年第3期(总第141期) 67 细菌纤维素(BC)对甲醛的吸附。 151z厶匕ll~的研究 王雨群．张庆松 (江苏省建筑科学研究院建筑工程质量检测中心，江苏南京 210008) 『摘 要1 用处理后细茵纤维素(baeteria1 cel1ul0se，Bc)对甲醛的吸附进行研究，考察了Bc对甲醛吸附的影响因素如不同 BC添加量随吸附时间、溶液DH值、甲醛初始质量浓度的影响，进一步探讨了BC对甲醛的吸附模拟和吸附等温线模拟。结 果表明：BC对甲醛的吸附平衡特征符合Langmuir等温吸附方程，其对甲醛的吸附动力学过程可用拟二级速度方程采描述。 通过用BC的纳米结构特性分析了对甲醛吸附原理．揭示了BC在环境净化中领域中的应用可行性及应用潜力。 『关键词1 细菌纤维素；甲醛；等温吸附方程；纳米结构；环境净化 『中图分类号1TQ342．86 『文献标识码1A 『文章编号]1005—6270(201 1)03—0067—04 Study on the Absorption Property for Formaldehyde by Bacterial Cellulose WANG Yu-qun ZHANG Qing—song (Testing Center for Quality of Construction Engineering，Jiangsu Research Institute of Building Science Co．，Ltd，Nanjing Jiangsu 210008 China) Abstract：The treated Bacterial cellulose(BC1 as new sorbent for formaldehyde removing formaldehyde was in— vestigated in this paper．The effects of performance parameters such as adsorption time，pH，mass concent ra— tion of adsorbent and mass concent ration of formaldehyde were analyzed．The equilibrium isothermal adsorp— tion equation of formaldehyde and bacterial cellulose were drawn．The results show that the adsorption equilib— rium of the treatmented BC to formaldehyde conforIBS to Langmuir model of the pseudo—second—order rate． Based on the structure analysis of BC．the nano—structure of BC controls to 1cad the adsorption characteristics of formaldehyde，the feasibility and potential applications of bacterial cellulose in environmental purification were revealed． Key words：bacterial cellulose；formaldehyde；equilibrium isothermal adsorption equation；nano——structure；en。。 vironmental purification 室内空气中的甲醛是室内环境中最严重和最普遍的污 尚没有BC在环境中对于有害物质的净化，特别是对甲醛 染物之一