长藻残留生物质的可持续利用,热解参数的优化和生命周期评估
Shahrukh Nawaj Alam1, Bhaskar Singh1, Abhishek Guldhe2
1Department of Environmental Sciences, Central University of Jharkhand, Cheri-Manatu, Ranchi 835 222, India.
The Science of the total environment
|February 11, 2024
概括
本研究探讨了用于可持续生物燃料的宏藻生物炼油厂,实现高生物油和生物炭产量. 生命周期评估确定了溶剂使用是环境热点,需要更绿色的替代品来有效生产生物燃料.
科学领域:
- 生物质能源转换生物质能源转换
- 可持续的燃料生产是可持续的
- 环境科学环境科学
背景情况:
- 全球日益增长的能源需求和化石燃料的限制推动了对可持续替代品的需求.
- 生物炼油厂为将生物质转化为生物燃料提供了一个可行的途径.
- 大藻类为可再生能源提供了丰富的非耕种生物质资源.
研究的目的:
- 调查尚未探索的宏观藻类生物质的高效生物炼油转化.
- 为了优化生物油和生物炭的生产从藻热解.
- 使用生命周期评估 (LCA) 评估宏藻生物燃料过程对环境的影响和可持续性.
主要方法:
- 用于生物柴油生产的脂质提取.
- 剩余生物质的热解产生生物油和生物煤.
- 响应表面方法 (RSM) 采用Box-Behnken设计进行过程优化.
- 生命周期评估 (LCA) 用于评估环境负担.
主要成果:
- 实现了36%的最大化生物油产量和45%的生物炭产量.
- RSM有效优化了热解的温度,反应时间和催化剂度.
- LCA确定了在转化过程中使用溶剂作为一个重要的环境热点.
结论:
- 大藻类是通过生物炼油厂生产可持续生物燃料和生物炭的有希望的原料.
- 使用RSM的过程优化可以提高生物油和生物炭的产量.
- 探索替代,环保的溶剂对于减轻基于大藻生物燃料生产对环境的影响至关重要.
相关概念视频
Green Algae
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
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...
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...
Biofuels
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...


