颗粒大小对聚乳酸预处理效率和随后的沼气潜力的影响
Ali Ashraf Joolaei1, Masoud Makian1, Om Prakash1
1Department of Smart-city Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea.
Bioresource technology
|January 10, 2024
概括
通过热性预处理的生物塑料碎片化增强了多乳酸溶解和甲生产. 较小的颗粒大小和更强的预处理显著提高了生物气产量,以实现高效的生物塑料消化.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 生物塑料 (BP) 碎片化和预处理对于高效的无氧消化至关重要.
- 颗粒大小的减少显著影响BP溶解和随后的生物气生产.
研究的目的:
- 为了研究热预处理对聚乳酸 (PLA) 颗粒大小减小的影响.
- 优化预处理条件,以提高PLA溶解和甲 (CH4) 生产.
主要方法:
- 对不同大小的PLA颗粒 (<0.5,0.5-1.0,1.0-2.0毫米) 进行了各种热预处理组合.
- 不同的性剂量 (50-200gOH-/kgBP),温度 (60-100°C) 和时间 (1-10小时).
- 分析了PLA溶解,CH4生产和化学变化,使用3D响应表面图和里埃变换红外光谱学.
主要成果:
- 在优化的预处理条件下,PLA溶解度增加到11.5-40.0%.
- 预处理对较小颗粒大小最有效,显著增加了CH4产量 (增加了高达24%).
- 通过FTIR分析证实,预处理的PLA转化为CH4,达到44-86%.
结论:
- 热性预处理有效地减少了PLA颗粒大小,提高了溶解度和甲产量.
- 优化预处理条件和更小的颗粒大小是最大限度地利用生物塑料生产生物气体的关键.
- 这项研究为通过无氧消化有效地利用生物塑料废物提供了一条途径.
相关概念视频
Production of Organic Acids
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
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...


