静磁场对光合细菌的生物效应：生物资源生产和废水处理效率的评价。
Bioeffect of static magnetic field on photosynthetic bacteria: Evaluation of bioresources production and wastewater treatment efficiency.
机构信息
College of Water Resource and Civil Engineering, China Agriculture University, Beijing, China.
State Key Laboratory of Coal Resources and Safe Mining, Beijing, China.
出版信息
Water Environ Res. 2020 Aug;92(8):1131-1141. doi: 10.1002/wer.1308. Epub 2020 Mar 9.
Photosynthetic bacteria (PSB) technology is a promising method for biomass, protein, pigments, and other value-added substances generation from wastewater. However, the above bioresources production efficiency is relatively low. In this work, a static magnetic field (SMF) was used to promote bioresources production. Results showed that SMF had positive effects on value-added substances production. With 0.35 Tesla (T) SMF, the PSB biomass, protein, carotenoids, and bacteriochlorophyll concentration were promoted by 31.1%, 22.6%, 56.7%, and 73.1% compared with the control group, respectively. Biomass yield finally reached 0.58 g biomass/g COD removal, which was promoted by 37.1%. The doubling time was shortened by 37.9% in 0.35 T group, showing that SMF can promote cell growth. With 0.35 T SMF, the intracellular NADH dehydrogenase and ATP synthase activities concentration increased by 23.4% and 29.1%, respectively, thus increased the ATP content by 38.0%. Succinic dehydrogenase activity concentration greatly increased by 609.0% at 48 hr, which potentially accelerated the tricarboxylic acid cycle and COD degradation as well as enhanced biomass production. PRACTITIONER POINTS: SMF promoted PSB bioresource production during wastewater treatment processing. Biomass, protein, carotenoids, and Bchl concentration were promoted by 31.1%, 22.6%, 56.7%, and 73.1%, respectively. PSB yield of 0.35 T group was promoted by 37.1% compared with the control group. SDH concentration of 0.35 T was promoted by 609.0% compared with the control group. Increased NADH and ATP synthase activity concentration by SMF enhanced energy metabolism.
光合细菌（PSB）技术是从废水中生成生物质、蛋白质、色素和其他增值物质的有前途的方法。然而，上述生物资源的生产效率相对较低。在这项工作中，我们使用静态磁场（SMF）来促进生物资源的生产。结果表明，SMF 对增值物质的生产有积极的影响。在 0.35 特斯拉（T）SMF 下，PSB 生物质、蛋白质、类胡萝卜素和菌叶绿素浓度分别比对照组提高了 31.1%、22.6%、56.7%和 73.1%。最终生物质产量达到 0.58g 生物质/gCOD 去除，提高了 37.1%。在 0.35T 组中，倍增时间缩短了 37.9%，表明 SMF 可以促进细胞生长。在 0.35T SMF 下，细胞内 NADH 脱氢酶和 ATP 合酶活性浓度分别提高了 23.4%和 29.1%，从而使 ATP 含量增加了 38.0%。琥珀酸脱氢酶活性浓度在 48 小时时大大提高了 609.0%，这可能加速了三羧酸循环和 COD 降解，并增强了生物质的产生。实践者要点：SMF 在废水处理过程中促进 PSB 生物资源的生产。生物质、蛋白质、类胡萝卜素和 Bchl 浓度分别提高了 31.1%、22.6%、56.7%和 73.1%。与对照组相比，0.35T 组的 PSB 产量提高了 37.1%。与对照组相比，0.35T 组的 SDH 浓度提高了 609.0%。SMF 增加了 NADH 和 ATP 合酶活性浓度，增强了能量代谢。
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