Aminated lignin by ultrasonic method with enhanced arsenic (V) adsorption from polluted water
Aminated lignin by ultrasonic method with enhanced arsenic (V) adsorption from polluted water
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DOI：
10.1007/s42114-022-00492-5
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发表时间：
2022-05
影响因子：
20.1
通讯作者：
Qizhou Wu;Lingshu Gao;Mina Huang;Gaber A. M. Mersal;M. M. Ibrahim-M.;Z. M. El-Bahy;Xiaofeng Shi;Qinglong Jiang
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文献类型：
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作者：
Qizhou Wu;Lingshu Gao;Mina Huang;Gaber A. M. Mersal;M. M. Ibrahim-M.;Z. M. El-Bahy;Xiaofeng Shi;Qinglong Jiang
采用不同频率的超声波处理制备了氨化木质素(Lignin@N-X)。当超声波频率为32 kHz时，木质素N-32对As(V)的吸附容量最大(64.08 mg·g−1)，再生能力强(5次循环下降15.06%)。Langmuir模型能较准确地描述木质素N-X对As(V)的吸附等温线，表明它是一种均相吸附。准一级和准二级动力学模型能够分别描述吸附过程的第一阶段和最后阶段，表明这是一个物理/化学过程。为木质素基材料的发展提供了一种新的思路。为废水中As(V)的高效去除提供了一种新的途径。图形摘要在不同超声波频率下对氨化木质素基吸附材料进行了除砷试验
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 abstractAminated lignin-based adsorbents under different ultrasonic frequencies were tested for removing arsenic from polluted water