聚氧乙烯糖醇非离子表面活性剂的完整生物降解性评估:有氧,无氧,联合生物降解和抑制作用
Francisco Ríos1, Francisco Caparrós-Salvador1, Manuela Lechuga1
1Department of Chemical Engineering, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n. 18071 Granada, Spain.
Water research
|November 21, 2023
概括
聚氧乙烯糖醇 (PGE-OE17) 在有氧和无氧条件下显示出有限的生物降解性. 结合有氧和无氧处理,最大限度地提高了生物降解率,为污染物清除提供了更有效的方法.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物降解性对于污染物,特别是废水中的表面活性物质至关重要.
- 像聚氧乙烯糖醇 (PGE-OE17) 这样的表面活性剂给环境带来了挑战.
- 评估生物降解性对于有效的废水处理至关重要.
研究的目的:
- 综合评估PGE-OE17的有氧和无氧生物降解性.
- 研究初始表面活性剂度对生物降解的影响.
- 评估生物降解过程中的毒性演变.
主要方法:
- 对PGE-OE17进行了有氧和无氧生物降解试验.
- 在降解过程中使用Vibrio fischeri监测毒性.
- 研究了联合有氧-无氧治疗方法.
主要成果:
- PGE-OE17在有氧和无氧过程中表现出不完全的生物降解.
- 较高的初始度对生物降解率产生了负面影响.
- 毒性最初增加,然后减少,表明微生物适应或副产品降解.
结论:
- 在测试条件下,PGE-OE17不能完全生物降解.
- 优化联合有氧-无氧处理可提高生物降解效率.
- 了解毒性动态是管理表面活性剂降解的关键.
相关概念视频
Microbial Bioremediation of Hydrocarbons
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 physical or...
Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
Bioplastics
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...
Microbial Bioremediation of Plastics
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...


