在合理载体上附着培养微藻以处理猪废水中的生物质收获。

Attached cultivation of microalgae on rational carriers for swine wastewater treatment and biomass harvesting.

机构信息

Beijing Key Laboratory for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.

出版信息

Bioresour Technol. 2022 May;351:127014. doi: 10.1016/j.biortech.2022.127014. Epub 2022 Mar 17.

DOI:10.1016/j.biortech.2022.127014

PMID:35307525

Abstract

Attachment effects of six carrier materials on the cultivation of high-value microalga Scenedesmus sp. LX1 in diluted swine wastewater were investigated. The results showed that when the initial algal densities were 5×10 cells/mL and 1×10 cells/mL in sterilized wastewater with 20-fold dilution, the biomass of microalgae attaching to geotextile was the highest. The contact angle and surface structure of the material affected the attachment of microalgae. Further, among the four dilutions, the highest attached biomass on geotextile was 414.47 mg/L in the sterilized wastewater at 20-fold, but the pollutants removal rate and attached biomass were higher in the non-sterile wastewater in the other three dilutions (original wastewater, 5-fold, 10-fold). Next, the microalgae were able to remove pollutants with the highest removal rates of COD, TN, NH-N and TP reaching to 86.92%, 60.75%, 71.81% and 96.13%. Moreover, the microalga was found to accumulate high-value products especially protein as high as 44.57%.

摘要

研究了六种载体材料对在稀释猪废水中培养高价值微藻 Scenedesmus sp. LX1 的附着效果。结果表明，当初始藻密度分别为 5×10 个细胞/mL 和 1×10 个细胞/mL 时，在经过 20 倍稀释的灭菌废水中，附着在土工织物上的微藻生物量最高。材料的接触角和表面结构影响微藻的附着。此外，在四种稀释度中，在 20 倍稀释的灭菌废水中，附着在土工织物上的最高附着生物量为 414.47 mg/L，但在其他三种稀释度（原废水、5 倍和 10 倍）的非灭菌废水中，污染物去除率和附着生物量更高。然后，微藻能够去除污染物，COD、TN、NH-N 和 TP 的去除率最高分别达到 86.92%、60.75%、71.81%和 96.13%。此外，还发现该微藻能够积累高价值产品，特别是蛋白质，高达 44.57%。