Efficient elimination and re-growth inhibition of harmful bloom-forming cyanobacteria using surface-functionalized microbubbles

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Efficient elimination and re-growth inhibition of harmful bloom-forming cyanobacteria using surface-functionalized microbubbles
	Zhang, Ming ; Wang, Yafeng ; Wang, Yuqing ; Li, Mengting ; Zhang, Daoyong ; Qiang, Zhimin ; Pan, Xiangliang
刊名	WATER RESEARCH
	2019-09-15
卷号	161 页码:473-485
关键词	Microcystis aeruginosa Re-growth inhibition Coagulative colloidal gas aphrons Bubble surface-modification Harmful algal blooms
ISSN号	0043-1354
英文摘要	The elimination of cyanobacteria is frequently required for treating and controlling the waters with harmful algal blooms. In this study, an improved flotation technology was developed using colloidal gas aphrons (CGAs) surface-modified with the inorganic coagulant of polyaluminum chloride (PACI); the Microcystis aeruginosa (M. aeruginosa) cells were efficiently removed and their re-growth was effectively inhibited. The so-created coagulative CGAs (CCGAs) exhibited the attractive characteristics of both CGAs and PACI for the cell removal. The experimental results clearly showed that 94.2-99.2% of cells were removed within 3 min at the optimum dosage of cetyltrimethyl ammonium bromide (CTAB) and PACI at three different initial cell densities (OD680 = 0.05, 0.26 and 0.76); and the re-growth of M. aeruginosa did not occur in 10 days. The flocs derived from the CCGA-flotation were of smaller size and looser configuration in contrast with those obtained from coagulation-flotation. The CCGAs were robust in charge neutralization, cell capture, cell attack and destruction. Even at low CTAB dosages, those bubbles could provide large surface area for capturing the M. aeruginosa cells in both unicellular and colonial form compared with the unmodified CTAB-CGAs. The CCGAs reduced 59.5-87.9% of CTAB dosage with the assistance of PACI and the required flotation retention time was largely shortened in comparison with the sedimentation and flotation-based treatment options. This would lead to low treatment cost and sludge production. The present work provides a novel insight into the development of flotation technologies for treating and controlling dense harmful algal blooms. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43447]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Univ Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Chinese Acad Sci, 18 Shuang Qing Rd, Beijing 100085, Peoples R China 2.Zhejiang Univ Technol, Coll Environm, Key Lab Microbial Technol Ind Pollut Control Zhej, Hangzhou 310014, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ming,Wang, Yafeng,Wang, Yuqing,et al. Efficient elimination and re-growth inhibition of harmful bloom-forming cyanobacteria using surface-functionalized microbubbles[J]. WATER RESEARCH,2019,161:473-485.
APA	Zhang, Ming.,Wang, Yafeng.,Wang, Yuqing.,Li, Mengting.,Zhang, Daoyong.,...&Pan, Xiangliang.(2019).Efficient elimination and re-growth inhibition of harmful bloom-forming cyanobacteria using surface-functionalized microbubbles.WATER RESEARCH,161,473-485.
MLA	Zhang, Ming,et al."Efficient elimination and re-growth inhibition of harmful bloom-forming cyanobacteria using surface-functionalized microbubbles".WATER RESEARCH 161(2019):473-485.