Kouloumbos V N, Schäffer A, Corvini P F-X
RWTH Aachen University, Institute for Environmental Research, Worringerweg 1, D 52074 Aachen, Germany.
Water Res. 2008 Aug;42(14):3941-51. doi: 10.1016/j.watres.2008.05.027. Epub 2008 Jun 24.
The fate of (14)C-labelled p353-nonylphenol (NP) in soils amended with differently treated sludges originating from the same precursor sludge was assessed. The effects of commonly applied conditioning and dewatering techniques were investigated. Nonylphenol was degraded considerably faster in soils amended with liquid sludge, while a significant portion of it remained intact and extractable by organic solvents when sludge had been centrifuged before soil amendment. Mineralization was reduced or even inhibited when freeze-thaw or lime conditioning was applied, respectively. Flocculation by an acrylamide-based cationic polymer led to the formation of a nitro-addition product of nonylphenol in soil, as well to decreased mineralization rates after prolonged incubation times. Possible mechanisms underlying the observations are suggested and discussed.
评估了用源自同一前驱污泥的不同处理污泥改良的土壤中(14)C标记的对叔辛基苯酚（NP）的归宿。研究了常用的调理和脱水技术的效果。在用液体污泥改良的土壤中，壬基酚的降解速度明显更快，而当污泥在土壤改良前进行离心处理时，其中很大一部分仍保持完整并可被有机溶剂萃取。分别采用冻融或石灰调理时，矿化作用会降低甚至受到抑制。基于丙烯酰胺的阳离子聚合物絮凝导致土壤中形成壬基酚的硝基加成产物，并且在延长培养时间后矿化率降低。对观察结果背后可能的机制进行了提出和讨论。
