Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; Botany Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; Physics Department, Faculty of Science, Islamic University of Madinah, P. O. Box: 170, AlMadinah Almonawara 42351, Saudi Arabia.
Int J Biol Macromol. 2021 Jun 30;181:301-312. doi: 10.1016/j.ijbiomac.2021.03.043. Epub 2021 Mar 10.
A new synthesized polyaniline/starch/hematite bio composite (PANI/S/FeO BC) has been studied as an effective material for on-site water remediation. PANI/S/FeO BC was developed by combining the techniques of co-precipitation and interfacial polymerization in the presence of aqueous starch solution in an acidic medium under ultrasonic irradiation. The nano-morphologies and structures of the designed PANI/S/FeO BC were evaluated by various techniques relative to PANI and FeO nanoparticles. In single and multiple systems, PANI/S/FeO BC was evaluated as a possible adsorbent for different heavy metals, including As, Zn, and Co, relative to PANI and FeO nanoparticles. In terms of pH value, operating temperature, initial heavy metal concentration, contact time, adsorbent dose and competitive ions in the solutions, the adsorption process was optimized. For 92% overall adsorption of Co and 100% overall adsorption of both As and Zn, the adsorption equilibrium was achieved within 60 and 120 min, respectively. In addition, adsorption thermodynamic analysis shows that the As ions adsorption process was not random and the pseudo-second-order fitted with experimental results. Moreover, PANI/S/FeO BC was evaluated as an antibacterial agent against Gram-negative bacteria (Salmonella typhimurium) and Gram-positive bacteria (S. aureus, Methicillin-Resistant Staphylococcus, Aureus Clinical isolate and Bacillus subtilis). The reported performances indicated that the PANI/S/FeO BC is a potent candidate for industrial water bioremediation.
一种新合成的聚苯胺/淀粉/赤铁矿生物复合材料（PANI/S/FeO BC）已被研究作为现场水修复的有效材料。PANI/S/FeO BC 通过在酸性介质中在超声辐射下存在水性淀粉溶液的情况下结合共沉淀和界面聚合技术制备。相对于PANI 和 FeO 纳米粒子，通过各种技术评估了设计的 PANI/S/FeO BC 的纳米形貌和结构。在单一和多种体系中，相对于 PANI 和 FeO 纳米粒子，PANI/S/FeO BC 被评估为用于不同重金属（包括 As、Zn 和 Co）的可能吸附剂。在 pH 值、操作温度、初始重金属浓度、接触时间、吸附剂剂量和溶液中的竞争离子方面，优化了吸附过程。对于 Co 的 92%总吸附和 As 和 Zn 的 100%总吸附，分别在 60 和 120 分钟内达到吸附平衡。此外，吸附热力学分析表明，As 离子吸附过程不是随机的，准二级拟合与实验结果相符。此外，PANI/S/FeO BC 被评估为针对革兰氏阴性菌（鼠伤寒沙门氏菌）和革兰氏阳性菌（金黄色葡萄球菌、耐甲氧西林金黄色葡萄球菌、金黄色葡萄球菌临床分离株和枯草芽孢杆菌）的抗菌剂。报告的性能表明，PANI/S/FeO BC 是工业水生物修复的有力候选者。
