Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 Prof.Dr. D. Mangeron Street, 700050, Iasi, Romania.
Department of Environmental Engineering and Management, "Cristofor Simionescu" Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73 Prof.Dr. D. Mangeron Street, 700050, Iasi, Romania.
J Environ Manage. 2019 Jan 15;230:110-118. doi: 10.1016/j.jenvman.2018.09.075. Epub 2018 Sep 29.
Rapeseed (RS) waste was used for sequential biosorption from aqueous solutions of two target micropollutants: lead ions and Reactive blue 19 (Rb19) dye, through an integrated approach, combining experimental assessment and statistical modeling. In both cases of sequential biosorption, a pseudo-second order kinetic model fitted the biosorption data well. Intraparticle diffusion proved to be the rate-limiting step in the sequential retention of both micropollutants. A selective desorption of metal ions and anionic dye at pH 2.5 and 10.5, respectively was observed. The quadratic models generated by response surface methodology (RSM) adequately described the sequential biosorption process and the desorption process, respectively. XPS and FTIR analysis indicated the mechanisms involved in the retention of target pollutants.
菜籽油废料被用于从两种目标微量污染物（铅离子和活性蓝 19 染料）的水溶液中进行连续生物吸附，采用了一种综合方法，将实验评估和统计建模结合起来。在连续生物吸附的两种情况下，准二级动力学模型都很好地拟合了生物吸附数据。内扩散证明是两种微量污染物连续保留的速率限制步骤。在 pH 值为 2.5 和 10.5 时，分别观察到了金属离子和阴离子染料的选择性解吸。响应面法（RSM）生成的二次模型分别很好地描述了连续生物吸附过程和解吸过程。XPS 和 FTIR 分析表明了涉及目标污染物保留的机制。
