基于双氨基粘土絮凝的嗜热微藻采收实验研究 |
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引用本文: | 张海若,陈鹏宇,梁园梅,Maurycy Daroch. 基于双氨基粘土絮凝的嗜热微藻采收实验研究[J]. 可再生能源, 2020, 38(7): 853-859 |
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作者姓名: | 张海若 陈鹏宇 梁园梅 Maurycy Daroch |
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作者单位: | 北京大学深圳研究生院 环境与能源学院, 广东 深圳 518055;北京大学深圳研究生院 环境与能源学院, 广东 深圳 518055;北京大学深圳研究生院 环境与能源学院, 广东 深圳 518055;北京大学深圳研究生院 环境与能源学院, 广东 深圳 518055 |
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摘 要: | 文章将双氨基粘土([MgAC]和[CeAC]的混合物)作为絮凝剂,并研究了[MgAC]和[CeAC]的配用比例和絮凝时间对采收效果的影响。研究结果表明:当[MgAC]与[CeAC]的配比分别为8∶1,5∶1,2∶1和1∶2时,微藻的絮凝效率均可在20 min内达到75%以上;与单独使用[MgAC]或[CeAC]相比,双氨基粘土形成的紧凑网络可在微藻细胞之间进行有效桥接,从而提高微藻采收效率,综合考虑经济性及絮凝效果,确定[MgAC]与[CeAC]的最优配比为8∶1;微藻采收效率与藻液细胞密度有较大关系,过高的藻液细胞密度会使微藻采收效率大大降低;使用双氨基粘土絮凝微藻不会影响微藻培养液的pH值,且双氨基粘土絮凝剂不会影响微藻细胞的生理活性,以及后续的开发应用。
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关 键 词: | 微藻 絮凝 双氨基粘土 |
Research on efficient harvesting of Thermophilic microalgae by mix-aminoclay |
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Affiliation: | (School of Environment and Energy,Peking University Shenzhen Graduate School,Shenzhen 518055,China) |
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Abstract: | In this study,mixture of[MgAC]and[CeAC]were used as flocculants.Flocculation of Thermophilic microalgae with high concentration has been achieved through utilization of[ACs]mixture,and[ACs]mixture ratio and flocculation time on harvesting effect was further explored.Experiment results showed the optimal ratios of[MgAC]and[CeAC]were 8∶1,5∶1,2∶1 and 1∶2,with the harvesting efficiency over 75%in 20 min.Compared with samples of[MgAC]or[CeAC]treatment independently,the[ACs]mixture can form a more compact network,and effectively bridge microalgae cells,resulting in higher efficiency of microalgae harvesting.From the perspectives of economics and flocculation efficiency,the optimal ratio of[MgAC]and[CeAC]was 8∶1.In addition,the harvesting efficiency was greatly related to the biomass concentration,by using[ACs]mixture,the harvesting efficiency remains above 75%for biomass concentration up to 12.31 mg/mL,however,when the concentration is too high,the efficiency will be greatly reduced.The use of[ACs]mixture does not affect the pH of microalgae culture solution,nor the physiological activity of microalgae cells and further utilization.This method can provide a possibility for the application of microalgae. |
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Keywords: | microalgae flocculation diaminoclay |
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