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两种释碳材料的制备及其性能研究 被引量:14
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作者 闫续 许柯 +1 位作者 耿金菊 任洪强 《中国环境科学》 EI CAS CSCD 北大核心 2012年第11期1984-1990,共7页
应用固定化技术制备了包埋淀粉的聚乙烯醇(PVA)释碳材料和海藻酸钠(SA)释碳材料,采用红外光谱和扫描电镜对其物化特性进行分析,研究了二者的释碳性能以及作为碳源对硝态氮的去除效果.结果表明,PVA释碳材料中淀粉混合较好,释碳过程... 应用固定化技术制备了包埋淀粉的聚乙烯醇(PVA)释碳材料和海藻酸钠(SA)释碳材料,采用红外光谱和扫描电镜对其物化特性进行分析,研究了二者的释碳性能以及作为碳源对硝态氮的去除效果.结果表明,PVA释碳材料中淀粉混合较好,释碳过程满足二级动力学方程,单位质量材料释放的饱和COD达到99.60mg/(g.L).在温度为18~22℃,pH7.2~8.0,硝态氮浓度为35mg/L的条件下,PVA释碳材料的平均反硝化速率为18.5g/(m3.d),SA释碳材料的平均反硝化速率为15.5g/(m3.d),在稳定运行15d后,出水硝态氮浓度逐渐升高,脱氮效果开始下降. 展开更多
关键词 反硝化 释碳材料 淀粉 聚乙烯醇 海藻酸钠 微生物载体
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Microalgae for Renewable Energy: Is it a Solution for Global Warming?
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作者 Meltem Conk Dalay 《Journal of Environmental Science and Engineering(A)》 2015年第4期161-168,共8页
Microalgae could be a new sustainable energy source substituted for petroleum. They can produce high value biodiesel, bioethanol, bio-hydrogen, biogas, and that they are able to use waste water and nutrients, allowing... Microalgae could be a new sustainable energy source substituted for petroleum. They can produce high value biodiesel, bioethanol, bio-hydrogen, biogas, and that they are able to use waste water and nutrients, allowing for integration of such processes with waste treatment. Open ponds in hectares of area, could remove excess CO2 in atmosphere with photosynthesis. Large scale microalgal production in fields which are not suitable for agriculture could be a solution for CO: capturing from the atmosphere. Sea water could be used for the culture medium not to consume the fresh water. However microalgae reduce the atmospheric CO: while producing the organic material, using the biomass for either fuel production or food, feed, fertilizer, come out with CO2 release to the atmosphere, when burned by the engine, body and/or bacterial activities. So, microalgal growth can't reduce the CO2 however makes an important contribution to keep the atmospheric CO2 level stable. Long term solution for removing the CO2, could be possible with making durable biomaterials with microalgal biomass and capture the atmospheric CO2 by fixing into the materials and interrupt the carbon cycle for a long while. 展开更多
关键词 MICROALGAE biofuel production biodiesel BIOETHANOL BIOHYDROGEN biogas.
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