Department of Chemistry, Banasthali Vidyapith, Rajasthan 304022, India.
Department of Chemistry, Banasthali Vidyapith, Rajasthan 304022, India; School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
Carbohydr Polym. 2019 Jan 1;203:430-440. doi: 10.1016/j.carbpol.2018.09.054. Epub 2018 Sep 30.
Fluoride (F-) contamination in water is of immense concern and has far-reaching effects. Among the many technologies available for fluoride removal, adsorption is the most popular. In this study, two new biopolymers (pectin and alginic) based trimetallic oxide (Fe-Al-Ni) composites were synthesized, characterized, and their suitability for fluoride adsorption has been evaluated. Fluoride adsorption capacity (Q) and removal time were tested for contaminated water using both the adsorbents. The Q of PFAN and AFAN was found to be 285 and 200 mg/g respectively, calculated from Langmuir isotherm. The investigation indicated that PFAN displayed a much higher Q (285 mg/g) for F- than that of AFAN. The presented investigation is the first report in which pectin biopolymer-based trimetallic oxide composite is used for the adsorption study of F- ions from water. This study also illustrates that the pectin opens a new class of biopolymer composites with higher adsorption capacity as compared to presently used biopolymer-based composites.
水中的氟化物（F-）污染是一个极其重要的问题，具有深远的影响。在众多可用的除氟技术中，吸附法最为流行。本研究合成了两种基于新型生物聚合物（果胶和海藻酸）的三金属氧化物（Fe-Al-Ni）复合材料，并对其进行了表征，评估了它们对氟化物吸附的适用性。使用两种吸附剂测试了受污染水中的氟化物吸附容量（Q）和去除时间。根据 Langmuir 等温线计算，PFAN 和 AFAN 的 Q 值分别为 285 和 200mg/g。研究表明，PFAN 对 F-的吸附量（285mg/g）明显高于 AFAN。本研究首次报道了果胶基三金属氧化物复合材料用于水中 F-离子吸附的研究。该研究还表明，与目前使用的基于生物聚合物的复合材料相比，果胶为具有更高吸附能力的新型生物聚合物复合材料开辟了一个新的类别。
