科学素养与生活应用·英语30篇（4）
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Algae-Based Biofuels: Green Energy from Tiny Organisms
藻类生物燃料：来自微小生物的绿色能源
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Microalgae grow rapidly in ponds or photobioreactors, converting sunlight, CO₂, and nutrients into oils usable as biodiesel feedstock.微藻在池塘或光生物反应器中快速生长，将阳光、二氧化碳和养分转化为可用作生物柴油原料的油脂。
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They produce up to 30 times more oil per hectare than soybeans—without competing for arable land or freshwater resources.其单位面积产油量可达大豆的30倍，且不占用耕地或淡水。
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Harvesting involves flocculation, centrifugation, or membrane filtration to separate dense algal paste from growth medium efficiently.收获过程采用絮凝、离心或膜过滤等方法，高效地将浓稠的藻浆与培养液分离。
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Oil extraction uses mechanical pressing or solvent methods, followed by transesterification to convert triglycerides into fatty acid methyl esters (FAME).油脂提取采用机械压榨或溶剂法，再经酯交换反应将甘油三酯转化为脂肪酸甲酯（FAME）。
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Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste.剩余生物质可制成营养丰富的动物饲料或土壤调理剂，实现资源循环而非产生废弃物。
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Carbon capture is built-in: algae absorb CO₂ from power plant flue gas, turning emissions into raw material for fuel production.碳捕获天然集成：微藻可吸收电厂烟气中的CO₂，将排放物转化为燃料生产的原料。
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Lifecycle analyses show net greenhouse gas reductions of 50–70% compared to fossil diesel when renewable energy powers cultivation.生命周期分析表明，若养殖全程使用可再生能源，相比化石柴油可净减少50%–70%温室气体排放。
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Scaling requires balancing energy inputs for pumping, lighting, and processing against energy outputs from refined fuel.规模化需权衡泵送、照明和加工等能耗与精炼燃料产出的能量。
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Genetic engineering helps boost lipid yields and tolerance to variable light or salinity—accelerating strain optimization timelines.基因工程可提高脂质产量及对光照波动或盐度变化的耐受性，加快菌株优化进程。
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Though still emerging, algae biofuels represent photosynthesis harnessed not just for food—but for clean, circular energy.尽管尚处发展初期，藻类生物燃料标志着光合作用不仅用于生产食物，更服务于清洁、循环的能源体系。