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Environmental Control and Optimization Strategies for Hydrogen Production Systems Using Chlorella
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This paper reviewed how environmental conditions—including microplastic and heavy metal pollutants—affect the efficiency of Chlorella-based hydrogen production systems, and proposed strategies for optimizing algal hydrogen yields under variable stress conditions.
Chlorella, with its large biomass and ability to produce hydrogen directly or indirectly, has become a potential green hydrogen resource. However, its hydrogen production efficiency is significantly affected by environmental conditions and system design. This paper systematically analyzes the environmental factors affecting chlorella hydrogen production, elucidates the toxicity mechanisms of pollutants such as microplastics and heavy metals, and examines the stress response mechanisms of chlorella. By integrating strategies for constructing hydrogen production systems, the paper proposes solutions to enhance chlorella hydrogen production efficiency from both environmental regulation and technological optimization perspectives, providing theoretical support for the practical application of chlorella hydrogen production.
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Influence of microplastics on microalgal performance during wastewater polishing
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Researchers studied how five common types of microplastics affect the green alga Chlorella vulgaris during wastewater treatment. They found that while microplastics reduced algal metabolism and growth, the organism maintained its ability to effectively remove nutrients from wastewater. The study demonstrates that Chlorella vulgaris is a robust candidate for bioremediation of microplastic-contaminated wastewater, even under pollutant stress.
Microplastics disrupt microalgal carbon fixation: Efficiency and underlying mechanisms
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Researchers exposed the microalga Chlorella pyrenoidosa to polyethylene and polyvinyl chloride microplastics and found up to 39% inhibition of carbon fixation, driven by reduced chlorophyll content, increased oxidative stress, and downregulation of genes in the Calvin cycle and chlorophyll metabolism, with implications for aquatic carbon cycling.
Effect of Microplastics Pollution on Hydrogen Production from Biomass: A Comprehensive Review
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This review examines how microplastics affect biohydrogen production from biomass fermentation, finding that the impact depends on both particle size and concentration — nanoplastics consistently suppress hydrogen yields, while microplastics can either increase or decrease production depending on their quantity.
Microplastics and Heavy Metals Removal from Fresh Water and Wastewater Systems Using a Membrane
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Researchers tested how polystyrene microplastics affect the growth, photosynthesis, and oxidative stress responses of freshwater microalgae Chlorella vulgaris. Smaller particles caused greater inhibition of growth and chlorophyll synthesis than larger ones.
Responses of anaerobic hydrogen-producing granules to acute microplastics exposure during biological hydrogen production from wastewater
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Researchers examined how anaerobic hydrogen-producing granules respond to microplastic exposure during biological hydrogen production from wastewater, finding that multiple coexisting microplastic types reduced hydrogen yields and altered microbial community composition.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.