Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi 835 215, Jharkhand, India.
College of Life Sciences and Biotechnology, Korea University, Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
Int J Biol Macromol. 2018 Oct 1;117:902-910. doi: 10.1016/j.ijbiomac.2018.05.163. Epub 2018 May 23.
Agar based hybrid biosorbents were synthesized by free radical copolymerization of acrylamide, NN'-methylenebisacrylamide (NN'MBAAm) on the agar backbone in presence of free radical initiator (ceric ammonium nitrate (CAN)) via oxidation, grafting and crosslinking reactions. The resultant hybrid materials have been characterized by FTIR spectroscopy, elemental analysis, thermal analysis (TGA/DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) taking agar as a reference. The swelling responses of hybrid materials have been extensively studied with various pH, time, temperature and ionic strength [NaCl] of the solution. These hybrid materials have been utilized for selective removal of heavy metal ions (Fe(III), Cr(III), Ni(II) and Mn(II)) and dye (methylene blue) through adsorption mechanism by formation of complex between the functional groups of biosorbent and metal ions & dye. These hybrid materials showed excellent results with their potential applications for environmental remediation from the textile effluents and heavy metal ions contaminated water bodies.
琼脂基杂化生物吸附剂是通过在琼脂骨架上自由基引发剂（硝酸铈铵 (CAN)）存在下，通过氧化、接枝和交联反应，使丙烯酰胺、NN'-亚甲基双丙烯酰胺 (NN'MBAAm) 自由基共聚合成的。通过傅里叶变换红外光谱、元素分析、热分析 (TGA/DTA)、X 射线衍射 (XRD) 和扫描电子显微镜 (SEM)，将琼脂作为参考对所得杂化材料进行了表征。通过吸附机制，杂化材料对各种 pH 值、时间、温度和溶液的离子强度 [NaCl] 进行了广泛的溶胀响应研究。这些杂化材料通过生物吸附剂的官能团与金属离子和染料之间形成配合物，用于选择性去除重金属离子 (Fe(III)、Cr(III)、Ni(II) 和 Mn(II)) 和染料 (亚甲基蓝)。这些杂化材料表现出优异的结果，具有从纺织废水中和重金属离子污染的水体中进行环境修复的潜在应用。
