干旱区生态环境知识资源中心(Arid): Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study

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DOI	10.1016/j.watres.2021.117069
	Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study
	Santos, Allan A.; Guedes, Dayvson O.; Barros, Mario U. G.; Oliveira, Samylla; Pacheco, Ana B. F.; Azevedo, Sandra M. F. O.; Magalhaes, Valeria F.; Pestana, Carlos J.; Edwards, Christine; Lawton, Linda A.; Capelo-Neto, Jose
通讯作者	Santos, AA (corresponding author), Univ Fed Rio de Janeiro, Carlos Chagas Filho Inst Biophys, Rio De Janeiro, Brazil.
来源期刊	WATER RESEARCH
ISSN	0043-1354
EISSN	1879-2448
出版年	2021
卷号	197
英文摘要	Cyanobacterial blooms are increasingly reported worldwide, presenting a challenge to water treatment plants and concerning risks to human health and aquatic ecosystems. Advanced oxidative processes comprise efficient and safe methods for water treatment. Hydrogen peroxide (H2O2) has been proposed as a sustainable solution to mitigate bloom-forming cyanobacteria since this group presents a higher sensitivity compared to other phytoplankton, with no major risks to the environment at low concentrations. Here, we evaluated the effects of a single H2O2 addition (10 mg L-1) over 120 h in mesocosms introduced in a reservoir located in a semi-arid region presenting a Planktothrix-dominated cyanobacterial bloom. We followed changes in physical and chemical parameters and in the bacterioplankton composition. H2O2 efficiently suppressed cyanobacteria, green algae, and diatoms over 72 h, leading to an increase in transparency and dissolved organic carbon, and a decrease in dissolved oxygen and pH, while nutrient concentrations were not affected. After 120 h, cyanobacterial abundance remained low and green algae became dominant. 16S rRNA sequencing revealed that the original cyanobacterial bloom was composed by Planktothrix, Cyanobium and Microcystis. Only Cyanobium increased in relative abundance at 120 h, suggesting regrowth. A prominent change in the composition of heterotrophic bacteria was observed with Exiguobacterium, Paracoccus and Deinococcus becoming the most abundant genera after the H2O2 treatment. Our results indicate that this approach is efficient in suppressing cyanobacterial blooms and improving water quality in tropical environments. Monitoring changes in abiotic parameters and the relative abundance of specific bacterial taxa could be used to anticipate the regrowth of cyanobacteria after H2O2 degradation and to indicate where in the reservoir H2O2 should be applied so the effects are still felt in the water treatment plant intake. (C) 2021 The Author(s). Published by Elsevier Ltd.
英文关键词	Water quality Cyanobacteria Advanced Oxidative Process Remediation Metagenomics Exiguobacterium
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000644359600016
WOS关键词	DISSOLVED ORGANIC-CARBON ; LAKE TAIHU ; CYANOBACTERIAL BLOOM ; OXIDATIVE STRESS ; RESISTANCE ; GROWTH ; PONDS ; RADIATION ; DYNAMICS
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351976
作者单位	[Santos, Allan A.; Pacheco, Ana B. F.; Azevedo, Sandra M. F. O.; Magalhaes, Valeria F.] Univ Fed Rio de Janeiro, Carlos Chagas Filho Inst Biophys, Rio De Janeiro, Brazil; [Guedes, Dayvson O.; Barros, Mario U. G.; Oliveira, Samylla; Capelo-Neto, Jose] Univ Fed Ceara, Dept Hydraul & Environm Engn, Fortaleza, Ceara, Brazil; [Barros, Mario U. G.] Water Resources Management Co, Fortaleza, Ceara, Brazil; [Pestana, Carlos J.; Edwards, Christine; Lawton, Linda A.] Robert Gordon Univ, Sch Pharm & Life Sci, Aberdeen, Scotland
推荐引用方式 GB/T 7714	Santos, Allan A.,Guedes, Dayvson O.,Barros, Mario U. G.,et al. Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study[J],2021,197.
APA	Santos, Allan A..,Guedes, Dayvson O..,Barros, Mario U. G..,Oliveira, Samylla.,Pacheco, Ana B. F..,...&Capelo-Neto, Jose.(2021).Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study.WATER RESEARCH,197.
MLA	Santos, Allan A.,et al."Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study".WATER RESEARCH 197(2021).