Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seoungbuk-gu, Seoul 02841, Republic of Korea.
Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seoungbuk-gu, Seoul 02841, Republic of Korea.
Bioresour Technol. 2020 Oct;313:123681. doi: 10.1016/j.biortech.2020.123681. Epub 2020 Jun 15.
Globally, high CO-emitting dairy industry obligated to treat waste and improve its carbon-footprints. Mixotrophic cultivation strategy (MCS) of microalgae enables to treat dairy wastes and mitigate CO for sustainable dairy economy. This study developed a biochemical process for organic whey with minimum dilution to avoid environmental burden. To make whey suitable for algae cultivation, it was pre-treated to remove polymers, unwanted solid fractions, opacity, and organic and inorganic overloads via acid hydrolysis, chemical flocculation and struvite formations with lowest dilution possible. 40% pretreated whey was most productive for biomass and lipid fractions respectively 4.54 and 1.80 gl with daily productivities 0.50 and 0.20 gld, however 25% to reach adequate treatment. Overall, biochemical treatment was effective to remove respectively 99.7 and 91-100% of organic and inorganic pollutants, however algal treatment alone exhibited maximum 92.6 and 48.5-98.4% removals from both treatment ratios which is promising finding of this work.
全球范围内，高 CO 排放的乳制品行业有责任处理废物并改善其碳足迹。微藻混合营养培养策略 (MCS) 可用于处理乳制品废物并减少 CO，以实现可持续的乳制品经济。本研究开发了一种最小稀释的有机乳清生化处理工艺，以避免环境负担。为了使乳清适合藻类培养，通过酸水解、化学絮凝和鸟粪石形成，对其进行预处理以去除聚合物、不需要的固体部分、不透明度以及有机和无机负荷，尽可能减少稀释。40%预处理乳清对生物量和脂质部分的产量分别为 4.54 和 1.80 gl，日生产力分别为 0.50 和 0.20 gld，然而 25%达到足够的处理效果。总的来说，生化处理可有效去除有机和无机污染物的 99.7%和 91-100%，而单独的藻类处理在两种处理比例下对两者的去除率最高分别为 92.6%和 48.5-98.4%，这是本工作的有希望的发现。
