Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt.
Faculty of Sciences, Chemistry Department, Alexandria University, Moharem Bey, Alexandria, Egypt.
Int J Biol Macromol. 2021 Oct 1;188:879-891. doi: 10.1016/j.ijbiomac.2021.08.092. Epub 2021 Aug 14.
Wastewaters is generally polluted with various inorganic and organic contaminants which require effective multipurpose purification technology. In this respect, a novel VO@Ch/Cu-TMA nanobiosorbent was constructed via encapsulation of nanoscale metal organic frameworks (Cu-TMA) into vanadium pentoxide-imbedded-chitosan matrix to comprehensively investigate its efficiency in removal of levofloxacin drug (LEVO) (e.g., organic pollutant) and chromium (VI) (e.g., inorganic pollutant) from water. Both LEVO drug and Cr(VI) adsorptions were correlated to pseudo-second order (R = 1) and Langmuir isotherm (R = 0.9924 for LEVO and R = 0.9815 for Cr(VI)). Adsorption of Cr(VI) was confirmed to be spontaneous and endothermic reactions, while LEVO was found to proceed via spontaneous and exothermic reactions based on the thermodynamic parameters. The emerged VO@Ch/Cu-TMA is regarded as an excellent nanobiosorbent for removal of inorganic contaminant as Cr(VI) from all natural water samples (tap, sea and wastewater) with percentages range 92.43%-96.95% and organic contaminant as LEVO drug from tap and wastewater (91.99%-97.20%).
废水中通常会受到各种无机和有机污染物的污染，这需要有效的多功能净化技术。在这方面，通过将纳米尺度的金属有机骨架（Cu-TMA）封装到氧化钒嵌入壳聚糖基质中，构建了一种新型的 VO@Ch/Cu-TMA 纳米生物吸附剂，以全面研究其从水中去除左氧氟沙星药物（LEVO）（例如，有机污染物）和六价铬（VI）（例如，无机污染物）的效率。LEVO 药物和 Cr(VI) 的吸附均与伪二级（R=1）和 Langmuir 等温线相关（对于 LEVO，R=0.9924；对于 Cr(VI)，R=0.9815）。基于热力学参数，吸附 Cr(VI)被确认为自发和吸热反应，而 LEVO 则被发现是通过自发和放热反应进行的。新型的 VO@Ch/Cu-TMA 被认为是一种极好的纳米生物吸附剂，可从所有天然水样（自来水、海水和废水）中去除无机污染物 Cr(VI)，去除率范围为 92.43%-96.95%，从自来水中和废水中去除有机污染物 LEVO 药物，去除率范围为 91.99%-97.20%。
