可回收ZIF-8插入酸修饰的细菌纳米纤维素微球,以改善从家用废水中去除四环素
Jiang Teng1, Yuheng Liu2, Pei Li1
1College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
International journal of biological macromolecules
|February 20, 2025
概括
一种新的复合微球,PNBC/ZIF-8-CNs,有效地从废水中去除四环素. 这种可回收的吸附剂表现出高容量和效率,为抗生素去除提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术 纳米技术
背景情况:
- 水中的抗生素污染对环境和健康构成重大风险.
- 开发高效且可重复使用的吸附剂对于有效的水资源整治至关重要.
- 氧化伊米达酸框架-8 (ZIF-8) 显示了污染物吸附的潜力.
研究的目的:
- 为了合成和描述一种新的可回收复合微球,PnBC/ZIF-8-CNs,用于去除四环素.
- 评估合成材料的吸附性能和可重复使用性.
- 评估PnBC/ZIF-8-CNs在实际废水中去除四环素的实际适用性.
主要方法:
- 通过将ZIF-8纳入修饰的细菌纳米纤维素微球中,合成PNBC/ZIF-8-CNs.
- 使用SEM,TEM,EDS,XRD,FT-IR,TGA,XPS和BET分析进行表征.
- 吸附实验以确定动力学,容量和可重复使用性,随后对真实的废水进行测试.
主要成果:
- PnBC/ZIF-8-CNs复合物表现出高的最大四环素吸附能力 (1564.44 mg/g).
- 吸附遵循伪第一阶动力学,表明自发和内热过程.
- 吸附剂在五个循环后保持了81.25%的去除效率,在真实废水中保持了89.77%的效率.
结论:
- PnBC/ZIF-8-CNs是一种高效且可重复使用的吸附剂,用于去除四环素.
- 简单的制备过程和卓越的性能使其成为实用的抗生素水处理的有希望的候选人.
- 这项研究强调了复合材料在应对水污染方面的潜力.
相关概念视频
Microbial Bioremediation of Uranium
114
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...
114
Microbial Bioremediation of Hydrocarbons
161
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
161
Bioplastics
73
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
73
Microbial Bioremediation of Plastics
142
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
142


