Department of Water Supply and Sewage Systems, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland.
Department of Environmental Engineering, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-720 Olsztyn, Poland.
Int J Environ Res Public Health. 2022 Sep 9;19(18):11362. doi: 10.3390/ijerph191811362.
Acid whey is a by-product of the dairy industry that should be utilized or appropriately neutralized. Anaerobic processes represent a group of prospective methods for whey processing, and a key priority in their development is to improve their technological and economical effectiveness. The present study aimed to determine the effect of ultrasonic disintegration (UD) of acid whey on the course and effectiveness of methane fermentation. The study results demonstrated that extending the UD duration resulted in increased concentrations of dissolved forms of COD and TOC, efficiency of organic matter biodegradation, and CH production. The best effects were achieved at 900 s US, including CH production of 0.203 ± 0.01 dm/gCOD and CH content accounting for 70.9 ± 2.8%. Organic compounds were removed with the following efficiencies: COD-78.7 ± 2.1%, TOC-80.2 ± 1.3%, and BOD-84.1 ± 1.6%. The highest net energy gain of 5.763 Wh was achieved upon UD of 300 s. Extension of UD time had no significant effect on the improvement in the energetic effectiveness of anaerobic digestion. A strong positive correlation was found between COD and TOC concentrations in the dissolved phase and CH production yield.
酸性乳清是乳制品工业的副产物，应该加以利用或适当中和。厌氧处理代表了一组乳清处理的有前景的方法，其开发的一个关键优先事项是提高其技术和经济效率。本研究旨在确定超声分散（UD）对酸乳清甲烷发酵过程和效率的影响。研究结果表明，延长 UD 时间会导致溶解态 COD 和 TOC 浓度、有机物生物降解效率和 CH 产量增加。在 900 s US 时效果最佳，包括 0.203 ± 0.01 dm/gCOD 的 CH 产量和 70.9 ± 2.8%的 CH 含量。有机化合物的去除效率如下：COD-78.7 ± 2.1%、TOC-80.2 ± 1.3%和 BOD-84.1 ± 1.6%。在 300 s 的 UD 下，获得了最高的净能量增益 5.763 Wh。延长 UD 时间对提高厌氧消化的能量效率没有显著影响。在溶解相中 COD 和 TOC 浓度与 CH 产量之间发现了很强的正相关关系。
Zotero 插件
