Improving microalgae removal efficiency using chemically-processed clays
Improving microalgae removal efficiency using chemically-processed clays
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DOI：
10.1007/s12257-016-0655-x
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发表时间：
2016-11
影响因子：
3.2
通讯作者：
Z. Kim;N. Thạnh;Ji‐Hyun Yang;Hanwool Park;M. Yoon;J. Park;Choul-gyun Lee
中科院分区：
文献类型：
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作者：
Z. Kim;N. Thạnh;Ji‐Hyun Yang;Hanwool Park;M. Yoon;J. Park;Choul-gyun Lee
为有效去除微藻，开发了碱处理和酸处理的化学处理粘土（PRCs），并对其去除效果进行了评价，并与天然粘土进行了比较。用氢氧化钠和不同用量的硫酸制备了改性粘土，并对其特性进行了分析。粘土的微藻去除效率根据处理中使用的硫酸的量而变化。当在1 × 106 cells/mL的铜绿微囊藻悬浮液中加入1g/L的PRC-D（1.5v/w的硫酸处理）时，其去除率最高（87.3 ± 1.5%），且对悬浮液的pH无明显影响，而天然粘土的去除率为32.1 ± 2.2%。最后，当选择的PRC-D显示出最好的效率被施加到在当地藻类盛开的湖泊中采集的湖水中时，其表现出77.6%的微藻去除效率，表明比天然粘土高1.7倍。结果表明，在这项研究中，加工粘土可以有助于有效地去除微藻在藻华地区的环境影响最小。
Chemically-processed clays (PRCs) by base and acid treatments were developed to effectively remove microalgae, and their removal efficiencies were evaluated and compared to that of natural clay. The processed clays were produced by using sodium hydroxide and different amounts of sulfuric acid, and their characteristics were analyzed. Microalgae removal efficiency of the clay was varied depending on the amount of sulfuric acid used in treatments. When adding 1 g/L of a PRC-D type (treated with 1.5v/wsulfuric acid) to theMicrocystis aeruginosasuspension (1 × 106cells/mL), the highest removal performance (87.3 ± 1.5%) without significant pH variation of the suspension was found among tested PRCs, whereas that of natural clay was 32.1 ± 2.2%. Finally, when selected PRC-D showing best efficiency was applied to lake water taken at a local algae bloomed lake, it exhibited 77.6% removal efficiency of microalgae, indicating 1.7 times higher than the natural clay. The results suggest that processed clays in this study could contribute to effective removal of microalgae in the algal-bloomed area with minimal environmental impact.