对聚氨酯大孔过滤绵(PU滤绵)进行氢氧化钠预处理后,通过浸没负载乳液型丙烯酸吸油树脂制得负载型有机溶剂吸收剂(RS吸收剂)。研究了氢氧化钠的预处理条件,测定了RS吸收剂对挥发性有机溶剂的吸收能力,研究了RS吸收剂对醋酸丁酯的吸收动力学,并考察了RS吸收剂对水溶液中低浓度醋酸丁酯的去除效果。结果表明:PU滤绵在50℃下预处理100min负载率可达到1.6g/g,RS吸收剂对醋酸丁酯的吸收倍率为5.8g/g,对四氯化碳的吸收倍率超过20g/g,对醋酸丁酯的吸收过程符合准一级动力学模型,45℃下对6g/L醋酸丁酯水溶液的去除率接近60%。
After pretreatment of polyurethane macroporous filter sponge (PU sponge) with sodium hydroxide,a loaded organic solvent absorbent (RS absorbent) was prepared by immersing the pretreated sponge in an acrylic emulsion of oil absorbent resin.The pretreatment conditions were studied.The absorbency of RS absorbent to organic solvents was determined.The absorption kinetics of RS absorbent to butyl acetate was studied.The removal effect of RS absorbent to butyl acetate with low concentration in aqueous solution was investigated.The results showed that the loading rate reached 1.6g/g with PU filter sponge pretreated for 100min at 50℃.The absorption capacity of RS absorbent to butyl acetate was 5.8g/g,and the absorption capacity to carbon tetrachloride was more than 20g/g.The absorption process of butyl acetate was following the quasi-first-order kinetic model.The removal rate of butyl acetate in 6g/L aqueous solution was close to 60% at 45℃.
[1] Webster T S,Devinny J S,Torres E M,et al.Biofiltration of odors,toxics and volatile organic compounds from publicly owned treatment works[J].Environmental Progress,1996,15(3):141-147.
[2] 田秀枝,朱宝库,徐又一,等.渗透蒸发脱除水中挥发性有机物的研究进展[J].环境污染与防治,2004,26(2):129-132.
[3] Yu W,Sun X,Wu Z,et al.Synthesis of PDMS-PS IPN pervaporation membrane for pervaporation recovery of butanol[J].Journal of Wuhan University of Technology-Mater Sci Ed,2018,33(6):1308-1314.
[4] 郭常颖,赵鹏程,肖靖.几种吸附材料在含油废水处理中的应用[J].环境科学与管理,2010,35(3):96-102.
[5] 南蓓蓓,刘立,高志亮,等.用于处理水体油污的合成吸附剂研究进展[J].长江大学学报(自科版),2013,10(20):153-155.
[6] Adebajo M O,Frost R L,Kloprogge J T,et al.Porous materials for oil spill cleanup:a review of synthesis and absorbing properties[J].Journal of Porous Materials,2003,10(3):159-170.
[7] Bi H C,Xie X,Yin K B,et al.Spongy graphene as a highly efficient and recyclable sorbent for oils and organic solvents[J].Advanced Functional Materials,2012,22(11):442l-4425.
[8] 彭丽,刘昌见,刘百军,等.天然有机纤维吸油材料的研究进展[J].化工进展,2014,32(2):1-5.
[9] Lin J,Shang Y,Ding B,et al.Nanoporous polystyrene fibers for oil spill cleanup[J].Marine Pollution Bulletin,2012,64(2):347-352.
[10] Jang J,Kim B S.Studies of crosslinked styrene-alkyl acrylate copolymers for oil absorbency application.I.synthesis and characterization[J].Journal of Applied Polymer Science,2000,77(4):903-913.
[11] 尹国强,崔英德,廖列文,等.高吸油性树脂的网络结构与性能[J].高分子材料科学与工程,2003,19(6):149-152.
[12] Ge B,Zhu X T,Li Y,et al.Versatile fabrication of magnetic superhydrophobic foams and application for oil-water separation[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2015,482(6):687-692.
[13] 张铭,邓仕英,胡达,等.悬浮聚合法合成高吸油树脂的研究[J].化工新型材料,2016,44(4):173-175.
[14] 贺术,张卫英,翁森,等.苯类吸收树脂的制备及其吸收与释放动力学[J].石油化工,2017,46(3):336-341.
[15] 雷小梅.聚二甲基硅氧烷多孔小球的制备及对有机溶剂和油的吸附研究[D].重庆:重庆工商大学,2014.
[16] 董晓婕.海绵负载型有机溶剂吸收剂的制备及性能研究[D].福州:福州大学,2017.
