Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland.
Toxins (Basel). 2018 Aug 22;10(9):338. doi: 10.3390/toxins10090338.
The effects of hydrocarbons sorption on sand and saponins presence in the system on butylbenzene and -butylbenzene biological degradation was investigated. Additionally, the impact of saponins-containing plant extracts on environmental microorganisms was studied. Results of cell surface property measurements in samples with saponins only revealed changes in cell surface hydrophobicity, electrokinetic potential and membrane permeability when compared to corresponding values for glucose-grown microbes. Subsequently, in sorption experiments, the hydrocarbon adsorption kinetics in bacteria-free samples were better explained with the pseudo-second order kinetic model as compared to the pseudo-first order and intraparticular diffusion models. Moreover, the equilibrium data fitted better to the Freundlich isotherm for both benzene derivatives. In the samples combining hydrocarbons sorption and biological degradation in the presence of saponins, alkane-substituted hydrocarbons removal was accelerated from 40% to 90% after 14 days and the best surfactant in this aspect was extract.
研究了烃类物质在系统中的吸附、沙和皂素的存在对丁基苯和正丁基苯生物降解的影响。此外，还研究了含皂素的植物提取物对环境微生物的影响。与葡萄糖生长的微生物相比，仅用皂素处理的样品的细胞表面特性测量结果表明，细胞表面疏水性、动电电位和膜通透性发生了变化。随后，在吸附实验中，与伪一级和内扩散模型相比，无细菌样品中烃类的吸附动力学更符合拟二级动力学模型。此外，两种苯衍生物的平衡数据更符合弗伦德利希等温线。在含有烃类物质吸附和生物降解的样品中，在皂素存在的情况下，14 天后烷烃取代烃类的去除率从 40%提高到 90%，在这方面最好的表面活性剂是 提取物。
