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可生物降解的塔罗干纤维素气凝:一种简单的方法吸附微塑料和染料污染物的污染物

Wei-Peng Qiu¹, Hai-Ze Su¹, Teng-Gen Hu²

¹College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China.

Journal of colloid and interface science

|October 4, 2024

概括

废弃的塔罗茎被用来制造一种能够从水中去除微塑料和染料的新型气凝. 这种可持续材料具有很高的吸附能力和可重复使用性,为水污染提供了一种绿色解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
生物技术是生物技术.

背景情况:

农业废物,微塑料和染料造成的水污染对环境构成重大威胁.
开发可持续和高效的吸附剂材料对于整治至关重要.

研究的目的:

从废弃的塔罗茎微晶纤维素 (TS-MCC) 制造生物质气凝,用于吸附微塑料和染料.
研究制造参数对气凝性能和吸附性能的影响.

主要方法:

制造具有不同纤维素含量,交叉连接剂度和预冷协议的TS-MCC气凝.
气凝结构的表征,机械性能和聚钢 (PS) 和刚果红 (CR) 的吸附能力.
吸附动力学,异热,机制 (FTIR,XPS) 和可重复使用性的分析.

主要成果:

优化的TS-MCC气凝 (TS-MCC2.0) 显示出一个层次性的多孔结构,良好的机械强度 (65.04 kPa) 和高吸附能力 (PS: 418.6 mg/g,CR: 951.51 mg/g).
气凝在广泛的pH范围 (3-11) 和离子强度以及混合污染物系统中保持有效性.
吸附遵循伪二次动力学和兰木尔/弗朗德利希等热,其机制包括结,静电吸引和π-π相互作用.
在5次重复使用循环后,高吸附效率 (PS: 92.37%,CR: 88.34%) 仍保留.

结论:

来自农业废物的绿色,可重复使用的气凝有效地从水中去除微塑料和染料.
该研究提供了一种有希望的,可持续的吸附剂,用于应对关键的水污染挑战.

关键词:

吸附机制是一种吸附机制.生物质气凝是一种生物质气凝.微塑料和染料的使用塔罗树干微晶纤维素纤维素.

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