School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316000, China; Ningbo Institute of Digital Twin, Eastern Institute of Technology, Ningbo, China.
Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Murdoch, WA 6150, Australia.
Bioresour Technol. 2024 Dec;413:131510. doi: 10.1016/j.biortech.2024.131510. Epub 2024 Sep 20.
The use of microalgae for antibiotic removal has received increasing attention due to its many advantages. However, challenges such as limited removal rates and the complexity of algae cell recovery persist. In this study, chitosan and FeCl modified peanut shell biochar (CTS@FeBC) was prepared for the immobilization of Chlorella pyrenoidosa. The results showed that CTS@FeBC effectively adsorbed and immobilized microalgal cells to form microalgae-biochar hybrids, resulting in higher sulfamethoxazole removal rate (45.7 %) compared to microalgae (34.4 %) or biochar (20.0 %) alone, and higher microalgal lipid yield (11.6 mg/L d) than microalgae alone (10.1 mg/L d). More importantly, the microalgae-biochar hybrids could be rapidly separated from the wastewater within 10 min by applying a magnetic field, resulting in a harvesting efficiency of 86.3 %. Overall, the microalgae-biochar hybrids hold great potential in overcoming challenges associated with pollutants removal and microalgal biomass recovery.
由于其诸多优点，利用微藻去除抗生素受到了越来越多的关注。然而，去除率有限和藻细胞回收复杂等挑战仍然存在。本研究制备了壳聚糖和 FeCl 改性的花生壳生物炭（CTS@FeBC），用于固定蛋白核小球藻。结果表明，CTS@FeBC 有效地吸附和固定了微藻细胞，形成了微藻-生物炭杂化体，与单独的微藻（34.4%）或生物炭（20.0%）相比，磺胺甲恶唑的去除率（45.7%）更高，微藻的产脂率（11.6 mg/L·d）也高于单独的微藻（10.1 mg/L·d）。更重要的是，通过施加磁场，微藻-生物炭杂化体可以在 10 min 内从废水中快速分离出来，收获效率达到 86.3%。总的来说，微藻-生物炭杂化体在克服污染物去除和微藻生物质回收相关的挑战方面具有很大的潜力。
