Biological Species Resource Research Key Laboratory, Zhengzhou Normal University, Zhengzhou 450044, China.
Yellow River Institute of Hydraulic Research, YRCC, Zhengzhou 450003, China E-mail:
Water Sci Technol. 2022 Jun;85(11):3259-3270. doi: 10.2166/wst.2022.171.
Nanoscale zero-valent iron-supported biochar pellets (nZVI)-(BP) were synthesized via liquid-phase reduction and applied to estrogen removal, including estrone (E1), 17β-estradiol (E2), and estriol (E3). The performance of nZVI-BP, with respect to its characterization, removal kinetics, and isotherms, was investigated. The results showed that the adsorption equilibrium was reached within 10 min of exposure. The adsorption capacity of estrogen decreased with increasing solute pH and nZVI-BP dosage. The adsorptivity increased with increasing initial estrogen concentration. The estrogen behavior followed a pseudo-second-order kinetic model. The adsorption data of different initial estrogen concentrations fitted to Freundlich adsorption isotherms. In addition, a preliminary discussion of the adsorption mechanism of nZVI-BP for estrogens was provided.
纳米零价铁负载生物炭球（nZVI）-（BP）通过液相还原法合成，并应用于雌激素的去除，包括雌酮（E1）、17β-雌二醇（E2）和雌三醇（E3）。研究了 nZVI-BP 的性能，包括其表征、去除动力学和等温线。结果表明，暴露 10 分钟即可达到吸附平衡。随着溶质 pH 值和 nZVI-BP 用量的增加，雌激素的吸附容量降低。随着初始雌激素浓度的增加，吸附性增加。雌激素的行为遵循准二级动力学模型。不同初始雌激素浓度的吸附数据拟合 Freundlich 吸附等温线。此外，还对 nZVI-BP 吸附雌激素的机理进行了初步探讨。
