Department of Chemistry, An-Najah National University, Nablus, Palestine.
Division of Plastic and Reconstructive Surgery, Johns Hopkins All Children's Hospital, St. Petersburg, FL, USA.
Environ Technol. 2021 Mar;42(7):1119-1131. doi: 10.1080/09593330.2019.1657963. Epub 2019 Aug 26.
In this study, we used a synthesized cross-linked magnetic chitosan with graphene oxide beads to study the removal of perchlorate from wastewater. The prepared complex was characterized using transmission electron microscopy (TEM), Fourier Transformation Infrared spectroscopy (FT-IR), vibrating sample magnetometry (VSM) and Thermal gravimetric analysis (TGA). Several parameters were studied including the effect of pH, contact time and the co-existing anions. The study showed that the adsorption could be studied in a wide range of pH. The study showed that the adsorption follows a pseudo-second-order model and Langmuir adsorption isotherm. The enthalpy and negative Gibbs standard free energy showed that the adsorption process was exothermic and spontaneous. The perchlorate adsorbent can be regenerated well by 0.1% NaCl solution.
在这项研究中，我们使用合成的交联磁性壳聚糖与氧化石墨烯珠来研究从废水中去除高氯酸盐。使用透射电子显微镜 (TEM)、傅里叶变换红外光谱 (FT-IR)、振动样品磁强计 (VSM) 和热重分析 (TGA) 对制备的复合物进行了表征。研究了包括 pH 值、接触时间和共存阴离子等多个参数。研究表明，吸附可以在很宽的 pH 值范围内进行。研究表明，吸附符合准二级模型和朗缪尔吸附等温线。焓和负吉布斯标准自由能表明吸附过程是放热和自发的。高氯酸盐吸附剂可以用 0.1%NaCl 溶液很好地再生。
