摘要
表面活性剂应用于皮革生产过程各个湿加工工序,未被皮坯吸收的表面活性剂随废水排放,引起潜在的生态风险。本文采用明亮发光杆菌新鲜菌液,评价了制革生产中常用的阴离子、阳离子和非离子九种表面活性剂,暴露15 min的生态毒性。结果发现,阳离子表面活性剂对发光细菌的生态毒性>>阴离子表面活性剂>非离子表面活性剂。非离子表面活性剂AEO、Triton X-100和Tween80对发光细菌有轻微发光抑制(10%～35%);磺酸盐型的阴离子表面活性剂中,拉开粉和太古油的光抑制率在浓度达2.0 g/L时仅分别为15%和45%,生态毒性远小于渗透剂T(EC50=406.81 mg/L);阳离子表面活性剂毒性为:CTAB(EC50=2.37 mg/L)>DTAB(EC50=10.68 mg/L)>SKC(EC50=73.96 mg/L)。研究结果为清洁制革过程选用表面活性剂提供了生态性参数。
Surfactants are used as auxiliaries in every wet processing process of leather production and discharged into wastewater, which would cause potential ecological risks. In this paper, fresh luminescent bacillus liquids were employed to evaluate the ecological toxicity of nine surfactants, including anionic, cationic and non-ionic surfactants after a 15 min exposure period. The results showed that the toxicity of surfactants to luminescent bacteria was: cationic surfactants >> anionic surfactants > non-ionic surfactants. Non-ionic surfactants AEO, Triton X-100 and Tween80 showed slight light inhibition ie.10%-35% to luminescent bacteria. In spite of all the three anionic surfactants with polar sulfonic group, the EC50 of penetrating agent T was 406.81 mg/L indicating much stronger light inhibition than both turkey red oil and nekal BX. The toxicity of cationic surfactants was: CTAB(EC50=2.37 mg/L)>DTAB(EC50=10.68 mg/L)>SKC (EC50=73.96 mg/L).These results provided ecological parameters for the selection of surfactants in the process of ecological leather production.
作者
韩威妺
周萱
谭娟
彭良琼
张文华
HAN Weimo;ZHOU Xuan;TAN Juan;PENG Liangqiong;ZHANG Wenhua(Key Laboratory of Leather Chemistry and Engineer of Ministry of Education,Sichuan University,Chengdu 610065,China;National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China)
出处
《皮革科学与工程》
CAS
北大核心
2019年第2期47-51,62,共6页
Leather Science and Engineering
基金
国家自然科学基金(21776185)
国家重点研发计划(2017YFB0308503)
关键词
发光细菌法
制革
表面活性剂
生态毒性
评价
luminescent bacteria method
leather production
surfactant
ecological toxicity
evaluation
