Yang Jie, Long Qianxin, Zhu Yan, Lin Cheng, Xu Xiaoxi, Pan Baiyang, Shi Wenya, Guo Yuyang, Deng Jianqiu, Yao Qingrong, Wang Zhongmin
Engineering Research Center of Electronic Information Materials and Devices, Ministry of Education & Guangxi Key Laboratory of Information Materials & School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, PR China.
Engineering Research Center of Electronic Information Materials and Devices, Ministry of Education & Guangxi Key Laboratory of Information Materials & School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, PR China.
Environ Res. 2024 May 15;249:118452. doi: 10.1016/j.envres.2024.118452. Epub 2024 Feb 13.
In this study, multilayer self-assembled multifunctional bamboo shoot shell biochar microspheres (BSSBM) were prepared, in which bamboo shoot shell biochar was used as the carrier, titanium dioxide as the intermediate medium, and chitosan as the adhesion layer. The adsorption behavior of BSSBM on heavy metals Ag(I) and Pd(II), antibiotics, and dye wastewater was systematically analyzed. BSSBM shows a wide range of adsorption capacity. BSSBM is a promising candidate for the purification of real polluted water, not only for metal ions, but also for Tetracycline (TC) and Methylene Blue (MB). The maximum adsorption amounts of BSSBM on Pd(II), Ag(I), TC and MB were 417.3 mg/g, 222.5 mg/g, 97.2 mg/g and 42.9 mg/g, respectively.The adsorption of BSSBM on Pd(II), MB and TC conformed to the quasi-first kinetic model, and the adsorption on Ag(I) conformed to the quasi-second kinetic model. BSSBM showed remarkable selective adsorption capacity for Ag(I) and Pd(II) in a multi-ion coexistence system. BSSBM not only realized the high value-added utilization of waste, but also had the advantages of low cost, renewable and selective adsorption. BSSBM demonstrated its potential as a new generation of multifunctional adsorbent, contributing to the recovery of rare/precious metals and the treatment of multi-polluted water.
在本研究中，制备了多层自组装多功能竹笋壳生物炭微球（BSSBM），其中竹笋壳生物炭作为载体，二氧化钛作为中间介质，壳聚糖作为粘附层。系统分析了BSSBM对重金属Ag(I)和Pd(II)、抗生素及染料废水的吸附行为。BSSBM表现出广泛的吸附容量。BSSBM是净化实际污染水的有前途的候选材料，不仅适用于金属离子，还适用于四环素（TC）和亚甲基蓝（MB）。BSSBM对Pd(II)、Ag(I)、TC和MB的最大吸附量分别为417.3 mg/g、222.5 mg/g、97.2 mg/g和42.9 mg/g。BSSBM对Pd(II)、MB和TC的吸附符合准一级动力学模型，对Ag(I)的吸附符合准二级动力学模型。BSSBM在多离子共存体系中对Ag(I)和Pd(II)表现出显著的选择性吸附能力。BSSBM不仅实现了废弃物的高附加值利用，还具有成本低、可再生和选择性吸附的优点。BSSBM展示了其作为新一代多功能吸附剂的潜力，有助于稀有/贵金属的回收和多污染水的处理。
