Aminated lignin by ultrasonic method with enhanced arsenic (V) adsorption from polluted water

• Published in: Advanced composites and hybrid materials 2022-06, Vol.5 (2), p.1044-1053
• Main Authors: Wu, Qizhou, Gao, Lingshu, Huang, Mina, Mersal, Gaber A. M., Ibrahim, Mohamed M., El-Bahy, Zeinhom M., Shi, Xiaofeng, Jiang, Qinglong
• Format: Article
• Language: English
• Subjects: Ceramics; Chemistry and Materials Science; Composites; Glass; Materials Engineering; Materials Science; Natural Materials; Original Research; Polymer Sciences
• ISSN: 2522-0128; 2522-0136
• DOI: 10.1007/s42114-022-00492-5

Aminated lignin (Lignin@N-X) was prepared by ultrasonic treatment at different frequencies. When the ultrasonic frequency is 32 kHz, the As (V) adsorption of Lignin@N-32 demonstrated the highest maximum capacity (64.08 mg·g −1 ) and prominent regenerability (reduced by 15.06% in 5 cycles). Langmuir model was able to describe the As (V) adsorption isotherms of Lignin@N-X more accurately, indicating it is one of the homogeneous adsorptions. Pseudo-first-order and pseudo-second-order kinetics models were able to describe the first and the last stages of the adsorption process, respectively, indicating it is a physical/chemical process. In this paper, a new idea is provided for the development of lignin-based material. It also provides an innovative way for the highly effective As (V) removal from wastewater. Graphical abstract Aminated lignin-based adsorbents under different ultrasonic frequencies were tested for removing arsenic from polluted water