Adsorption characteristics and mechanisms of bisphenol A on novel nitrogen-modified biochar derived from waste masks and biomass

被引：1

作者：

Wang, Tongtong ^{[1
]}

Husein, Dalal Z. ^{[3
]}

Guo, Siyan ^{[2
]}

Zhang, Xinle ^{[2
]}

Kang, Jiarui ^{[2
]}

Wang, Huixia ^{[2
]}

Cao, Shumiao ^{[2
]}

Shangguan, Zhonghua ^{[4
]}

Shi, Hui ^{[1
,2
]}

机构：

[1] Institute for Interdisciplinary and Innovate Research, Xi’an University of Architecture and Technology, Xi’an

[2] School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an

[3] Chemistry Department, Faculty of Science, New Valley University, El-Kharja

[4] Xi’an Geological Survey Center, China Geological Survey, Xi’an

来源：

Environmental Science and Pollution Research | 2024年 / 31卷 / 39期

关键词：

Adsorption mechanisms; Biochar; Bisphenol A; Cost and risk evaluation; Nitrogen modification; Waste masks;

D O I：

10.1007/s11356-024-34605-y

中图分类号：

学科分类号：

摘要：

Resource utilization of waste masks has become an urgent scientific issue. In this work, with sustainably, waste masks and biomass were co-pyrolysis with oxygen limitation to prepare mask-based biochar (MB). Then, urea was introduced to prepare novel nitrogen modified mask-based biochar (NMB) via a one-step hydrothermal synthesis method. The adsorption characteristics of NMB on the emerging environmental pollutant, bisphenol A (BPA), were evaluated via batch adsorption tests. Moreover, the physicochemical properties of the materials were characterized with various advanced techniques. Also, the roles of waste masks and nitrogen modification were explored. The adsorption mechanisms of NMB on BPA were revealed as well as the performance differences between different adsorbents. The results showed that waste masks participated in thermochemical reactions, shaped the microsphere structure of biochar, and increased the types of surface functional groups. The nitrogen modification enriched the surface elemental composition and activated the specific surface area via the mesopore. These would enhance the adsorption performance. The maximum adsorption of BPA by NMB was 62.63 mg·g−1, which was approximately 2.35–5.58 times higher than that of the control materials. Temkin model and pseudo-second-order model optimally simulate the isothermal and kinetic adsorption, respectively. The adsorption mechanisms are jointly by physical and chemical adsorption, which mainly includes π–π interaction, hydrogen bonding, intraparticle diffusion, surface adsorption, and ion exchange. After discussion and evaluation, NMB has lower preparation process cost (7.21 USD·kg−1) and safety, with potential for environmental applications. This study aims to expand new ideas for the comprehensive utilization of waste masks and the preparation of eco-friendly materials. Moreover, it provides a theoretical basis for the removal of BPA. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

页码：51237 / 51252

页数：15

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