亚麻纤维从废水去除和回收U(VI)：吸附、解吸及间歇式吸附器方案

Removal and recovery of U(VI) from aqueous effluents by flax fiber: Adsorption, desorption and batch adsorber proposal.

作者信息

Abutaleb A, Tayeb Aghareed M, Mahmoud Mohamed A, Daher A M, Desouky O A, Bakather Omer Y, Farouq Rania

机构信息

Chemical Engineering Department, College of Engineering, Jazan University, Jazan, Saudi Arabia.

Minia University, College of Engineering, Chemical Engineering Department, Egypt.

出版信息

J Adv Res. 2019 Nov 11;22:153-162. doi: 10.1016/j.jare.2019.10.011. eCollection 2020 Mar.

Flax fiber (Linen fiber), a valuable and inexpensive material was used as sorbent material in the uptake of uranium ion for the safe disposal of liquid effluent. Flax fibers were characterized using BET, XRD, TGA, DTA and FTIR analyses, and the results confirmed the ability of flax fiber to adsorb uranium. The removal efficiency reached 94.50% at pH 4, 1.2 g adsorbent dose and 100 min in batch technique. Adsorption results were fitted well to the Langmuir isotherm. The recovery of U (VI) to form yellow cake was investigated by precipitation using NHOH (33%). The results show that flax fibers are an acceptable sorbent for the removal and recovery of U (VI) from liquid effluents of low and high initial concentrations. The design of a full scale batch unit was also proposed and the necessary data was suggested.

亚麻纤维（亚麻布纤维）是一种有价值且价格低廉的材料，被用作吸附剂材料来摄取铀离子，以安全处置液体废水。通过BET、XRD、TGA、DTA和FTIR分析对亚麻纤维进行了表征，结果证实了亚麻纤维吸附铀的能力。在分批技术中，当pH值为4、吸附剂剂量为1.2克且吸附时间为100分钟时去除效率达到94.50%。吸附结果与朗缪尔等温线拟合良好。使用33%的NHOH通过沉淀研究了U(VI)回收形成黄饼的情况。结果表明，亚麻纤维是从低初始浓度和高初始浓度的液体废水中去除和回收U(VI)的可接受吸附剂。还提出了全尺寸分批装置的设计方案并给出了必要数据。