干旱区生态环境知识资源中心(Arid): Disinfection of water and wastewater by biosynthesized magnetite and zerovalent iron nanoparticles via NAP-NAR enzymes of Proteus mirabilis 10B

Arid

DOI	10.1007/s11356-019-05479-2
	Disinfection of water and wastewater by biosynthesized magnetite and zerovalent iron nanoparticles via NAP-NAR enzymes of Proteus mirabilis 10B
	Zaki, Sahar A.; Eltarahony, Marwa Moustafa; Abd-El-Haleem, Desouky A.
通讯作者	Zaki, Sahar A.
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2019
卷号	26 期号:23 页码:23661-23678
英文摘要	Disinfection of water and wastewater strongly contributes to solving the problem of water shortage in arid/semi-arid areas; cheap and ecofriendly approaches have to be used to meet water quality standards. In the present study, a green synthesis of iron nanoparticles (INPs) under aerobic and anaerobic conditions via nitrate reductases (NAP/NAR) enzymes produced by Proteus mirabilis strain 10B were employed for this target. The biosynthesized INPs were characterized; UV-Vis spectroscopy revealed surface plasmon resonance at 410 (aerobic) and 265 nm (anaerobic). XRD indicated crystalline magnetite ((MNPs) aerobically synthesized) and zerovalent INPs (ZVINPs anaerobically synthesized). EDX demonstrated strong iron signal with atomic percentages 73.3% (MNPs) and 61.7% (ZVINPs). TEM micrographs illustrated tiny, spherical, periplasmic MNPs (1.44-1.92 nm) and cytoplasmic ZVINPs with 11.7-60.8 nm. Zeta potential recorded - 31.8 mV (ZVINPs) and - 66.4 mV (MNPs) affirming colloidal stability. Moreover, the disinfection power of INPs was evaluated for standards organisms and real water (fresh, sea and salt mine) and wastewater (municipal, agricultural and industrial) samples. The results reported that INPs displayed higher antagonistic effect than iron precursor, 700 and 850 mu g/mL of MNPs and ZVINPs, respectively, was sufficient to show a drastic algicidal effect on algal growth. Both types of INPs demonstrated obvious dose-dependent antibiofilm efficiency. Due to their smaller size, MNPs were more efficient than ZVINPs at the suppression of microbial growth in all examined water samples. Overall, MNPs showed superior antagonistic activity, which promotes their exploitation in enhancing water/wastewater quality.
英文关键词	Nitrate reductase Magnetite iron nanoparticles Disinfection Antagonistic activity Wastewater treatment
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000477958300039
WOS关键词	PERIPLASMIC NITRATE REDUCTASE ; OXIDE FE3O4 NANOPARTICLES ; SILVER NANOPARTICLES ; PSEUDOMONAS ; GROWTH ; GENES ; BACTERIA ; DENITRIFICATION ; STRAIN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215548
作者单位	City Sci Res & Technol Applicat, Genet Engn & Biotechnol Res Inst, Environm Biotechnol Dept, Alexandria 21934, Egypt
推荐引用方式 GB/T 7714	Zaki, Sahar A.,Eltarahony, Marwa Moustafa,Abd-El-Haleem, Desouky A.. Disinfection of water and wastewater by biosynthesized magnetite and zerovalent iron nanoparticles via NAP-NAR enzymes of Proteus mirabilis 10B[J],2019,26(23):23661-23678.
APA	Zaki, Sahar A.,Eltarahony, Marwa Moustafa,&Abd-El-Haleem, Desouky A..(2019).Disinfection of water and wastewater by biosynthesized magnetite and zerovalent iron nanoparticles via NAP-NAR enzymes of Proteus mirabilis 10B.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(23),23661-23678.
MLA	Zaki, Sahar A.,et al."Disinfection of water and wastewater by biosynthesized magnetite and zerovalent iron nanoparticles via NAP-NAR enzymes of Proteus mirabilis 10B".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.23(2019):23661-23678.