利用活体微藻修复猪废水中的锌和锰：性能、机制和藻生物质利用。
Bioremediation of zinc and manganese in swine wastewater by living microalgae: Performance, mechanism, and algal biomass utilization.
机构信息
Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
出版信息
Bioresour Technol. 2023 Oct;385:129382. doi: 10.1016/j.biortech.2023.129382. Epub 2023 Jun 21.
The remediation effects of living Chlorella sp. HL on zinc and manganese in swine wastewater was investigated, and the responses of algal cells and the mechanism were explored. In the wastewater with Zn(II) concentration of 1.85 mg/L and Mn(II) of 1 or 6 mg/L, the highest removal of Zn(II) by Chlorella reached 86.72% and 97.16%, respectively, and the Mn(II) removal were 42.74% and 30.33%, respectively. The antioxidant system of cells was activated by a significant increase in superoxide dismutase and catalase enzyme activities and a significant decrease in malondialdehyde in the mixed system compared to the single system. The presence of Mn(II) could positively regulate the differentially expressed genes related to catalytic activity and metabolic processes between the single Zn system and the mixed systems, reducing the stress of Zn(II) on Chlorella and more favorable to chlorophyll synthesis. The heavy metal-containing microalgal biomass obtained has the potential as feed additives.
研究了活小球藻 HL 对猪废水中锌和锰的修复效果，并探讨了藻类细胞的响应及其机制。在 Zn(II)浓度为 1.85mg/L 和 Mn(II)浓度为 1 或 6mg/L 的废水中，小球藻对 Zn(II)的最高去除率分别达到 86.72%和 97.16%，Mn(II)的去除率分别为 42.74%和 30.33%。与单一体系相比，混合体系中超氧化物歧化酶和过氧化氢酶酶活性显著增加，丙二醛显著降低，从而激活了细胞的抗氧化系统。混合体系中 Mn(II)的存在可以正向调节与单一 Zn 体系和混合体系中催化活性和代谢过程相关的差异表达基因，减轻 Zn(II)对小球藻的胁迫，更有利于叶绿素的合成。获得的含重金属微藻生物质具有作为饲料添加剂的潜力。
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