钙离子浓度对水华微囊藻生物钙化固定CO2的影响

Influence of calcium concentration on CO_2 fixation with bio-calcification of Microcystis flos-aquae

以水华微囊藻为研究对象,对其生物钙化固定二氧化碳的潜能进行了探索,并研究了不同钙离子浓度对其生物钙化固碳能力的影响。结果表明,水华微囊藻表现出明显的生物钙化作用,且其生物钙化能力随钙离子初始浓度不同而变化,当钙离子初始浓度为170 mg·L^(-1)时,水华微囊藻生物钙化能力较强。在藻细胞初始浓度为1.7×10~6~1.8×10~6cell·m L^(-1)条件下,1 000 m L的藻液可固定二氧化碳量达36.5 mg。实验结果为拓展藻类生物钙化固定二氧化碳的研究提供了新的思路。

In present study, the potential of bio-calcification with Microcystis flos-aquae for CO2 sequestration was investigated, and influence from calcium concentration on bio-calcification ability was also studied. The results showed that Microcystis flos-aquae could induce significant bio-calcification, which was dependent on the initial calcium concentration in solution. The highest calcium precipitation was observed when the initial calcium was 170 mg·L-1. Meanwhile, the amount of fixed CO2 was up to 36.5 mg per 1 000 mL algal solution （initial algal concentration：1.7×106 to 1.8×106 cell·mL-1）. This research could provide new insight on the application of microalgae bio-calcification for CO2 fixation.