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1微藻技术在污水处理中的应用与展望显示文摘水体污染是当前突出的环境问题之一,随着各类新兴水处理技术的不断涌现,廉价高效的生态治理技术得到了较快发展,其中微藻生物技术的发展与应用受到了普遍关注。微藻生物技术的处理工艺主要分为开放跑道池培养体系、封闭式光生物反应器培养体系以及固定化培养体系等。微藻技术可以实现对污水中氮、磷、硫、难降解有机物及重金属等的同步转化去除,并可应用于市政污水、养殖废水、工业排水等不同类型的水处理工艺中。在处理过程中,藻种的筛选、工艺条件的操控以及反应器的选型,均会对处理效果产生显著影响。该文通过对微藻去除有机物、氮磷硫、重金属等不同污染要素的机理、效率以及工艺特点的总结分析,评述了当前微藻污水处理技术的发展现状及存在的问题,并展望了微藻技术用于污水处理行业的发展前景与主攻方向。周浩媛 陈军 盛彦清 2020环境科学与技术2020,43,11:13
2Chlorella across latitudes: investigating biochemical composition and antioxidant activities for biotechnological applications显示文摘With the present day rise of interest in acquiring sustainability in the pharmaceutical industry,there has been an emphasis on finding natural resources to replace the use of synthetic compounds used in products.Microalgae have garnered significant attention owing to their natural and sustainable capability to produce a diverse array of bioactive compounds.Therefore,this study aims to evaluate the biochemical composition and antioxidant properties of Chlorella strains from a tropical region(Chlorella UMACC 051 and Chlorella UMACC 038)and a polar region(Chlorella UMACC 250 and Chlorella UMACC 234).The cultures were grown for 10 d.At the end of the experiment,the specific growth rate,chlorophyll-a content,carotenoid content,biomass,and biochemical composition such as carbohydrate,protein and lipid content were determined.In addition,the phytochemical properties were determined using a total phenolic assay while the antioxidant activities were determined using 2,2-diphenyl-1-picrylhydrazyl(DPPH).Of all Chlorella strains tested,the tropical Chlorella UMACC 051 showed the fastest growth rate and biomass while the polar Chlorella UMACC 234 contained the highest pigment content and tropical Chlorella UMACC 038 has the highest total phenolic content.The biochemical composition analysis showed all strains have a high lipid content ranging from 45.36%to 60.30%dry weight.All Chlorella strains exhibited a small amount of antioxidant activity(15.42%to 30.15%)and total phenolic content ranging from 1.91±0.04 to 4.43±0.10 mg GAE·g–1 dry weight.The results indicated that polar Chlorella UMACC 234 has the most potential in containing significant amounts of bioactive compounds.Chloe Zi-En WONG Ming-Li TEOH Sook Wah CHAN Nallammai SINGARAM Wendy Ming-Yen TEOH John BEARDALL 2023Advances in Polar Science2023,34,4:0
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