摘要
以脂肪醇聚氧乙烯醚(AEO)为目标污染物,在等同条件下做厌氧消化污泥和好氧活性污泥对其生物降解性能的对比实验,得出了同一系列AEO分子中聚氧乙烯基与整个分子的降解难易程度的关系。表明:①污泥会对AEO分子产生吸附-脱附作用而出现假降解率,克服假降解率的干扰是准确测定AEO生物降解性的关键因素;②厌氧和好氧条件下,AEO均可降解,但厌氧降解要稍优于好氧降解;③AEO中聚氧乙烯基的单元数(n)是影响其生物降解的重要因素,相同碳链的直链烷基,生物降解率随n的增加而明显降低。
The anaerobic and aerobic biodegradation tests of fatty alcohol polyoxyethylene ether were carried out.The relationship between the biodegradation of polyoxyethylene group and the whole molecule was studied.The experimental results show that,①There is the pseudo degradation rate on the sludge system because of the adsorption and desorption between fatty alcohol polyoxyethlene ether and the sludge,while the elimination of its influences is a critical issue for the exactness of the biodegradation determination;②The fatty alcohol polyoxyethylene ether can be degraded in both anaerobic and aerobic conditions,but the anaerobic biodegradation is a litte better than the aerobic biodegradation;③The number of oxyethylene group is of great importance for the biodegradation of fatty alcohol polyoxyethylene ether.For a fatty alcohol polyoxyethylene ether molecule of a given alcohol chain lenth,the more number of the oxyethylene groups,the more difficult is the biodegradation.
出处
《日用化学工业》
CAS
CSCD
北大核心
2004年第2期77-79,共3页
China Surfactant Detergent & Cosmetics
基金
贵州省科学技术基金资助课题((2000)3079)
