全球生命周期和藻类生物燃料的技术经济评估
David Quiroz1, Jonah M Greene1, Braden J Limb1
1Mechanical Engineering Department, Colorado State University, 1374 Campus Delivery, Fort Collins, Colorado 80523, United States.
Environmental science & technology
|July 27, 2023
概括
这项研究揭示了藻类生物燃料生产的最佳全球位置,突出了赤道地区的高产量和南美/中非的低环境影响. 经济上可行的生产在东南亚和委内瑞拉是可能的.
科学领域:
- 可再生能源可再生能源是可再生能源.
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 藻类生物燃料的技术经济分析 (TEA) 和生命周期评估 (LCA) 往往忽视了最佳种植地点,可能低估了可持续性.
- 之前的研究可能无法充分捕捉全球潜力,因为位置的关注度不足于最佳.
研究的目的:
- 根据生产率,环境影响和经济可行性,确定藻类生物燃料生产的最佳全球地点.
- 用经过验证的生物物理和可持续性建模进行全面评估.
主要方法:
- 在全球6685个地点模拟了Scenedesmus obliquus的生长率,考虑了温度,光抑制和呼吸.
- 使用特定区域成本和税率进行空间解析的TEA.
- 包括区域电力,气和营养市场在内的综合LCA对十个环境类别的影响.
主要成果:
- 在赤道地区发现了最大的藻类生物燃料产量 (24.827.5 g m-2 d-1).
- 在南美洲和中非地区发现了有利的环境影响,包括低井到轮的全球变暖潜力 (3145g CO2eq MJ-1),特别是低碳电网.
- 在东南亚和委内瑞拉,藻类燃料最低价格为每升1.89美元-2.15美元 (汽油等价).
结论:
- 藻类生物燃料生产的最佳全球位置显著提高了生产率和经济可行性.
- 整合低碳电力对于最大限度地减少环境影响至关重要,例如全球变暖潜力,空气质量和环保.
- 解决特定地区的挑战可以进一步降低燃料价格和环境足迹,释放藻类生物燃料的全部潜力.
更多相关视频
11:44Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry
Published on: March 6, 2016
9.4K
10:08Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
Published on: June 14, 2017
16.4K
相关概念视频
Green Algae
50
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...
50
Overview of Algae
50
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
50
Environmental Applications of Microorganisms
61
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
61
Bioremediation
19.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
19.0K
Lipid Catabolism
59
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
59
Fates of Pyruvate
8.7K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.7K
