干旱区生态环境知识资源中心(Arid): Commercial fertilizer as effective iron chelate (Fe3+ -EDDHA) for wastewater disinfection under natural sunlight for reusing in irrigation

Arid

DOI	10.1016/j.apcatb.2019.04.041
	Commercial fertilizer as effective iron chelate (Fe3+ -EDDHA) for wastewater disinfection under natural sunlight for reusing in irrigation
	Nahim-Granados, S.1,2; Oller, I.1,2; Malato, S.1,2; Sanchez Perez, J. A.2; Polo-Lopez, M. I.1,2
通讯作者	Polo-Lopez, M. I.
来源期刊	APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN	0926-3373
EISSN	1873-3883
出版年	2019
卷号	253 页码:286-292
英文摘要	In this study, the use of a commercial iron fertilizer (Fe3+ -EDDHA) employed to remediate iron chlorosis in agriculture has been investigated as a promoting bactericidal agent in solar wastewater disinfection processes. Two water matrices: isotonic water (IW) and synthetic fresh-cut wastewater (SFCWW) and two bacterial strains (E. coli O157:H7 and Salmonella enteritidis) have been investigated. The bacterial inactivation rates were compared with other solar processes (solar only, H2O2/solar, Fe3+/solar and Fe3+/H2O2/solar) at neutral pH and at laboratory scale (200 mL) under natural solar radiation. Reagents concentration tested was 0.5, 2.5 and 5 mg L-1 of Fe3+ or Fe3+ -EDDHA and 1, 5 and 10 mg L-1 of H2O2. Microbial inactivation kinetics showed an improvement of the solar disinfection efficiency when using Fe3+-EDDHA/solar in comparison with Fe3+/H2O2/solar (conventional photo-Fenton) in both water matrices. Among all reagent concentrations tested, the best inactivation kinetic rate for both bacteria was obtained with 2.5/5 mg L-1 Fe3+-EDDHA/H2O2, reaching > 5-log reduction in 45 min of treatment or 31 Whm(-2) of solar UVA-dose. In addition, an inactivation mechanism has been proposed based on changes in membrane permeability when Fe3+ -EDDHA is present and on structural damages caused by hydroxyl radicals (HO center dot) for Fe3+ -EDDHA/H2O2/solar process. Finally, this study highlights the possibility of efficient fresh-cut wastewater treat for further irrigation reuse in arid and semiarid regions using disinfected wastewater that already includes iron fertilizer, reducing water scarcity and with the additional advantage of diminished impact of iron chlorosis in crops.
英文关键词	E. coli 0157:H7 Fresh-cut wastewater Fe3+ -EDDHA Reuse S. enteritidis Wastewater disinfection
类型	Article
语种	英语
国家	Spain
收录类别	SCI-E
WOS记录号	WOS:000469904500032
WOS关键词	SOLAR DISINFECTION ; FENTON ; PERMEABILITY ; SALMONELLA ; INCREASE
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS研究方向	Chemistry ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214225
作者单位	1.CIEMAT, Plataforma Solar Almeria, POB 22, Tabernas 04200, Almeria, Spain; 2.Univ Almeria, CIEMAT, CIESOL, Almeria 04120, Spain
推荐引用方式 GB/T 7714	Nahim-Granados, S.,Oller, I.,Malato, S.,et al. Commercial fertilizer as effective iron chelate (Fe3+ -EDDHA) for wastewater disinfection under natural sunlight for reusing in irrigation[J],2019,253:286-292.
APA	Nahim-Granados, S.,Oller, I.,Malato, S.,Sanchez Perez, J. A.,&Polo-Lopez, M. I..(2019).Commercial fertilizer as effective iron chelate (Fe3+ -EDDHA) for wastewater disinfection under natural sunlight for reusing in irrigation.APPLIED CATALYSIS B-ENVIRONMENTAL,253,286-292.
MLA	Nahim-Granados, S.,et al."Commercial fertilizer as effective iron chelate (Fe3+ -EDDHA) for wastewater disinfection under natural sunlight for reusing in irrigation".APPLIED CATALYSIS B-ENVIRONMENTAL 253(2019):286-292.