基于动力学模型的加脂剂生物降解性研究  

Biodegradability of Fatliquors Based on Dynamic Model

作　　者：李彦春[1] 郑力文[1] 刘洁[1] 陈玉峰[1] 吴渝玉[1] 

机构地区：[1]山东轻工业学院轻化与环境工程学院,山东济南250353

出　　处：《中国皮革》2011年第7期11-13,共3页China Leather

摘　　要：通过测定BOD5/COD0值以及基质去除率等指标,研究了不同改性方法对加脂剂生物降解性的影响,获得了在低浓度条件下各种改性加脂剂的降解能力顺序。结果表明:在低浓度条件下(<1000mg/L)磷酸化加脂剂的生物降解性最好,而硫酸化加脂剂降解性最差。用Monod模型研究了加脂剂在各浓度条件下的生物降解能力,研究表明:阴离子型和非离子型加脂剂在低基质浓度(<1000mg/L)下,其结构与微生物的亲和性对其生物降解性能起主要作用。应用Monod模型所得的动力学参数:硫酸化、氧化-亚硫酸化、磺化、磷酸化和醇酰胺化加脂剂的Ksq分别为267.77、69、4.7.16、81和3.74g/L(初始COD0浓度);最大比降解速率qmax则分别为27.37、18、41、87和0.59h-。The influence of different modification methods （ sulfated,oxidized-sulphited,sulfonation,phosphated and amidated） on the biodegradability of fat-liquoring agents was studied by determining BOD5 /COD0 values and COD removal rate. The biodegraded order of diversified modified fatliquors at low concentrations （ 1 000mg/L） was obtained. The results show that phosphated fatliquor has the best biodegradability,and the sulfated fatliquors shows the worst biodegradability. The biodegrad-ability of fatliquors in different concentration was studied using the Monod model. It shows that affinity and the molecular structures of anionic and nonionic fatliquors to microbial organization has decided their degradability at low concentrations （ 1 000 mg/L） . Kinetics parameter from Monod model shows that Ksq of sulfated,oxidized-sulphited,sulfonation,phosphated and amidated fatliquors are as follows： 267. 77,4. 69,7. 16,2. 81 and 3. 74g/L （ initial COD0 concentration） respectively. Maximum specific degradation rate qmax are 27. 37,1. 18,1.41,0.87 and 0.59h-respectively.

关 键 词：加脂剂 生物降解 降解动力学 Monod模型 

分 类 号：TS529.4[轻工技术与工程—皮革化学与工程]