Ningbo University of Finance & Economics, Ningbo, People's Republic of China.
Zhejiang University, Hangzhou, People's Republic of China.
Environ Sci Pollut Res Int. 2020 Oct;27(30):37357-37362. doi: 10.1007/s11356-020-08220-6. Epub 2020 Mar 6.
The heavy metal sources of large-scale raceway pond microalgae cultivation with flue gas were investigated to reduce heavy metal contents in microalgae during cultivation. The microalgae were cultivated with power plant flue gas (as C source) and circulating cooling seawater (added with N and P nutrients) for 6 days. The Pb, Cd, Hg, and As contents in microalgae were 0.91, 0.22, 0.08, and 0.28 ppm, respectively, which are nearly within the available national standard for food-grade microalgae. The heavy metal contents in microalgae with two membrane materials, namely, elastic polyethylene and random copolymer polypropylene, barely increased. The Hg, As, and Pb contents in microalgae cells cultivated with pure CO were 16.67%, 69.23%, and 70.33% that of cells cultivated with CO from flue gas. The Pb, As, and Hg contents in cells cultivated with fresh water were reduced by 38.46%, 15.38%, and 37.50%, respectively, compared with those cultivated with seawater. The heavy metal contents in microalgae were further reduced and controlled.
研究了利用烟道气进行大规模养殖跑道池微藻的重金属来源，以降低培养过程中微藻中的重金属含量。将微藻在电厂烟道气（作为 C 源）和循环冷却海水中（添加 N 和 P 营养物）培养 6 天。微藻中的 Pb、Cd、Hg 和 As 含量分别为 0.91、0.22、0.08 和 0.28ppm，均接近食品级微藻的现行国家标准。两种膜材料，即弹性聚乙烯和无规共聚聚丙烯，对微藻中重金属含量的增加影响不大。用纯 CO 培养的微藻细胞中的 Hg、As 和 Pb 含量分别是用烟道气中的 CO 培养的细胞的 16.67%、69.23%和 70.33%。与用海水培养相比，用淡水培养的微藻细胞中的 Pb、As 和 Hg 含量分别降低了 38.46%、15.38%和 37.50%。进一步降低和控制了微藻中的重金属含量。
