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、4.69、7.16、2.81和3.74g/L(初始COD0浓度);最大比降解速率qmax则分别为27.37、1.18、1.41、0.87和0.59h-1。
The influence of different modification methods （ sulfated, oxidized sulphited, sulfonation, phosphated and amid： ated） on the biodegradability of fat liquoring agents was studied by determining BODs/COD0 values and COD removal rate. The biodegraded order of diversified modified fatliquors at low concentrations （ 〈 lO00mg/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 struc- tures of anionic and nonionic fatliquors to microbial organization has decided their degradability at low concentrations （ 〈 1000mg/ 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 CODo concentration） respectively. Maximum specific degradation rate qmax are 27.37, 1.18, 1.41,0.87 and O. 59h ^-1 respectively.
出处
《中国皮革》
CAS
北大核心
2011年第9期9-13,共5页
China Leather
