School of Life Sciences, Jiangsu University, Zhenjiang 212013, China|.
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
Bioresour Technol. 2022 Mar;348:126707. doi: 10.1016/j.biortech.2022.126707. Epub 2022 Jan 13.
The weak magnetic field (MF) intervention on the semi-continuous system of filamentous algae Tribonema sp. during outdoor cultivation was investigated using starch wastewater. Results show that except for winter, MF in other seasons can effectively improve the algal biomass yield and oil productivity. In summer, the biomass concentration and oil productivity of Tribonema sp. could reach up to 14.7 g/L and 0.216 g/(L d) (130 mT), which increased by 9.8% and 35.8% respectively compared with the control group without MF intervention. By continuously shortening HRT to increase the nutrient load, the removal rate of COD, total nitrogen and total phosphorus all reached more than 87.9%. MF intervention not only weakened the bacterial diversity in open-photobioreactors system but also proved to be beneficial to the establishment of bacteria-algae symbiotic system. As a non-transgenic method, MF effectively up-regulated the growth of filamentous microalgae and promoted the biosynthesis productivity of high value-added compounds.
采用淀粉废水对丝状藻束丝藻（Tribonema sp.）半连续系统进行室外培养时的弱磁场（MF）干预进行了研究。结果表明，除冬季外，MF 可在其他季节有效提高藻类生物量产量和油脂生产力。在夏季，束丝藻的生物量浓度和油脂生产力可达 14.7 g/L 和 0.216 g/（L·d）（130 mT），与未进行 MF 干预的对照组相比，分别提高了 9.8%和 35.8%。通过不断缩短 HRT 以增加营养负荷，COD、总氮和总磷的去除率均达到 87.9%以上。MF 干预不仅削弱了开放式光生物反应器系统中的细菌多样性，而且有利于建立细菌-藻类共生系统。作为一种非转基因方法，MF 有效促进了丝状微藻的生长，提高了高附加值化合物的生物合成生产力。
