使用SDS/SAP纳米细胞对生物炭的功能化提高了其对水中的染料和重金属的固定能力
Kun Tian1,2, Chunping Li1,2, Huiming Liu1
1Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, 650224, Yunnan, China.
Scientific reports
|February 28, 2025
概括
一种新的改性生物炭 (SDMBC) 有效地去除重金属和有机污染物. 这种生态吸附剂显示出高效率,可重复使用性和污水处理应用的潜力.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物炭 (BC) 是一种潜在的吸附剂,但其容量需要提高,以有效地去除污染物.
- 开发具有成本效益和环保的吸附剂对于废水处理至关重要.
研究的目的:
- 为了制备一种新的多功能改性生物炭 (SDMBC),通过将二二硫酸盐/沙平素 (SDS/SAP) 纳米细胞与生物炭进行交联,制备一种新的多功能改性生物炭.
- 评估SDMBC对重金属离子和有机污染物的吸附性能.
- 通过机器学习研究吸附机制并预测性能.
主要方法:
- SDMBC是通过一种简单,环保的交叉连接方法合成的.
- 吸附能力测试了 (Pb) (II), (Cd) (II),双A (BPA),甲基蓝 (MB) 和p-烯 (PNP).
- 描述包括FT-IR,XRD,SEM和Zeta潜力. 分析了吸附同热量和动力学. 机器学习模型 (XGBoost) 用于预测.
主要成果:
- 与单独使用BC,SDS或SAP相比,SDMBC显示显著提高了吸附能力.
- SDMBC对各种污染物具有很高的吸附能力 (例如,Pb(II的130.23 mg/g,MB的277.09 mg/g) 并在二元竞争中保持了效率.
- 吸附过程遵循弗洛伊德利希等热量和伪二次动力学,表明多层化学吸附. 在广泛的pH范围和多次重复使用后,SDMBC表现出稳定性.
结论:
- SDMBC是一种高效,具有成本效益和可重复使用的生态吸附剂,用于从废水中去除各种污染物.
- 增强的吸附性归因于SDMBC的多层结构,丰富的功能组和无形性质.
- 机器学习模型,特别是XGBoost,准确地预测吸附性能,为吸附剂设计和过程优化提供了宝贵的见解.
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