School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, United States.
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
Bioresour Technol. 2020 May;303:122884. doi: 10.1016/j.biortech.2020.122884. Epub 2020 Jan 23.
This paper investigated the effects of temperature and cultivation methods (batch or semi-continuous culture) on the filamentous microalgae Tribonema sp. biomass production and nutrients removal in starch wastewater under low intensity magnetic field (MF) intervention. The MF significantly promoted algal growth in the late logarithmic-phase of batch cultivation, and the effect was even more obvious at lower temperatures. The MF treated group at 30 °C accumulated the highest biomass of 4.44 g/L of batch culture, an increase of 15.0% compared with the control group. The oil content of Tribonema sp. was enhanced with the MF intervention, especially for the batch culture. In the semi-continuous culture under MF intervention, Tribonema sp. reached the high biomass of 18.45 g/L after 25 days. When gradually reducing hydraulic retention time (HRT) to 1 day, the average removal rates for COD, TN, NH-N and TP were all more than 90% in the semi-continuous cultivation.
本研究探讨了温度和培养方式（分批或半连续培养）在低强度磁场（MF）干预下对淀粉废水丝状微藻 Tribonema sp.生物量生产和养分去除的影响。MF 显著促进了分批培养后期对数期藻类的生长，在较低温度下效果更为明显。在 30°C 下，MF 处理组的分批培养最高生物量为 4.44g/L，比对照组增加了 15.0%。MF 干预增强了 Tribonema sp.的含油率，特别是在分批培养中。在 MF 干预下的半连续培养中，Tribonema sp.在 25 天后达到了 18.45g/L 的高生物量。当逐渐将水力停留时间（HRT）缩短至 1 天时，半连续培养中 COD、TN、NH-N 和 TP 的平均去除率均超过 90%。
