焦点提醒：可沉微藻转化油脂潜力和PHB合成实验研究 晓地, 靳景宜, 罗玉琪, 曹达啓PDF下载[1]郝晓地,靳景宜,罗玉琪,等.可沉微藻转化油脂潜力和PHB合成实验研究[J].中国给水排水,2020,36(07):1-6.点击复制

可沉微藻转化油脂潜力和PHB合成实验研究中国给水排水[ISSN:1000-4062/CN:12-1073/TU]卷:36期数:2020年07期页码:1-6栏目:出书日期:2020-04-01

Title:

Lipids Conversion Potential and PHB Synthesis of Settleable Microalgae

作者:

郝晓地,靳景宜,罗玉琪,曹达啓

要害词:

可沉微藻;二级出水;聚合物;油脂;聚β-羟基丁酸酯（PHB）;蓝藻

Keywords:

settleable microalgae;secondary effluent;polymer;lipids;poly-β-hydroxybutyrate (PHB);cyanobacteria

摘要:

可沉微藻在去除二级出水中氮、磷的同时，能够合成并堆集多种具有高附加值的聚合物，如油脂、卵白质、多糖、聚β-羟基丁酸酯（PHB）等。前期实验在“冲淘”压力下挑选出了沉淀率高达97%的可沉微藻，并经由过程一系列情况转变（通入CO_{2、实施光/暗轮回等）刺激油脂聚积，最高可取得49.2%（细胞干质量，下同）的油脂含量。进一步强化实验显示，以增添光照强度与CO2通入量到达进一步提高可沉微藻油脂含量的做法适得其反，反而呈现油脂含量降落的现象。而可沉蓝藻具有相当的合成、堆集PHB的能力，只需具有少量特同性碳源（乙酸盐）刺激，可沉蓝藻在欠亨入CO2的环境下便可轻松合成并堆集含量高达30%摆布的PHB。这类首要以无机碳源合成PHB的方式比以无机碳源合成PHB的活性污泥法更具吸引力。}

Abstract:

Beyond removing nitrogen and phosphorous from secondary effluent, the settleable microalgae can also synthesize and accumulate such high value-added polymers as lipids, proteins, polysaccharides, poly-β-hydroxybutyrate (PHB), etc.The previous experiments efficiently enriched settleable microalgae with the settleable rate of more than 97% by applying “washout” pressure, and accumulated the highest lipids content of 49.2% (dry cell weight) by changing environmental factors like CO_{2, light/dark shift, etc. According to the following experiment results, increasing the light intensity and CO2intake would not further increase the lipids content of the settleable microalgae. Instead, the lipids content decreased. However, settleable cyanobacteria had a good ability to synthesize and accumulate PHB. As long as there was a tiny specific carbon source (acetate) stimulation, cyanobacteria could easily synthesize and accumulate PHB with the content of up to 30% without CO2input.Clearly, synthesizing PHB mainly from inorganic carbon source was more attractive than that from organic carbon source by activated sludge.}

类似文献/References:

[1]镇祥华,余琴芳,万年红,等.污水处置厂二级出水深床滤池超深度脱氮研究[J].中国给水排水,2020,36(11):91.[2]雷晨,许路,张琼华,等.紫外活化过硫酸盐手艺用在污水厂二级出水深度处置[J].中国给水排水,2020,36(15):86.LEI Chen,XU Lu,ZHANG Qiong-hua,et al.Advanced Treatment of Secondary Effluent from a Wastewater Treatment Plant by Ultraviolet Activated Persulfate[J].China Water & Wastewater,2020,36(07):86.

更新日期/Last Update:2020-04-01

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