Full Text Journal Articles by
Author Natella Mirzoyan


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Eutrophication leads to the formation of a sulfide-rich deep-water layer in Lake Sevan, Armenia.

Khoren Avetisyan, Natella Mirzoyan, Rayford B Payne, Vardan Hayrapetyan, Alexey Kamyshny,

Lake Sevan is a meso-eutrophic water body, which was severely impacted by anthropogenic level decrease, pollution and eutrophication during the last century. Starting in the 1970s, these processes resulted in the formation of an oxygen-depleted hypolimnion during summer-autumn stratification of the lake. In this work, we demonstrate for the first ... Read more >>

Isotopes Environ Health Stud (Isotopes in environmental and health studies)
[2021, 57(5):535-552]

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Wastewater-based epidemiology as a novel assessment approach for population-level metal exposure.

Christopher Markosian, Natella Mirzoyan,

Pollution by heavy metals and metalloids is detrimental to human health due to their toxic, genotoxic, and carcinogenic effects. The traditional approach to assess the extent of environmental and occupational exposures of metals is human biomonitoring (HBM). This method has several limitations, including invasiveness, sampling bias, cost- and time-intensiveness, and ... Read more >>

Sci Total Environ (The Science of the total environment)
[2019, 689:1125-1132]

Cited: 4 times

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Electron-acceptor utilization and methanogenesis in brackish aquaculture sludge

Natella Mirzoyan, Amit Gross,

Anaerobic digestion (AD) of sulfate-rich brackish aquaculture sludge (BAS) is an effective method to reduce negative environmental impact and produce biogas. However, the mechanisms of electron-acceptor utilization during AD of BAS, and the effects of elevated sulfate, nitrate and nitrite levels on biogas production, have never been investigated. The current ... Read more >>

(Aquacultural engineering.)
[2015, 67:32-38]

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Effect of sulfide on growth of marine bacteria.

Natella Mirzoyan, Harold J Schreier,

Severe hypoxia leads to excess production of hydrogen sulfide in marine environments. In this study, we examined the effect of sulfide on growth of four facultative anaerobic marine bacteria in minimal media under anaerobic conditions. The Gram-negative chemolithoautotrophic Marinobacter sp. tolerated sulfide concentrations up to 0.60 mM, with doubling and lag ... Read more >>

Arch Microbiol (Archives of microbiology)
[2014, 196(4):279-287]

Cited: 4 times

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Use of UASB reactors for brackish aquaculture sludge digestion under different conditions.

Natella Mirzoyan, Amit Gross,

Treatment and disposal of high volume of salty waste production in recirculating aquaculture systems (RASs) is a major challenge and the sludge is often a source of environmental pollution and salinization of receiving soils and water bodies. Anaerobic digestion is an efficient mean for the treatment of wastes of different ... Read more >>

Water Res (Water research)
[2013, 47(8):2843-2850]

Cited: 3 times

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Anaerobic Treatment of Brackishwater Aquaculture Sludge: An Alternative to Waste Stabilization Ponds

Natella Mirzoyan, Ryan Christopher McDonald, Amit Gross,

Environmental pressure, land utilization, and economic feasibility have resulted in the development of recirculating aquaculture systems (RAS). For many RAS, sludge is collected and washed from the system to waste stabilization ponds (WSPs). However, disposal of brackishwater aquaculture sludge into WSP is often prohibited because the high salinity can interfere ... Read more >>

(Journal of the World Aquaculture Society.)
[2012, 43(2):238-248]

Cited: 2 times

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Anaerobic digestion of sludge from intensive recirculating aquaculture systems: Review

Mirzoyan, Tal, Gross,

Intensive recirculating aquaculture systems (RAS) produce high volumes of biosolid waste which is a potential source of pollution if not properly treated. A reduction in sludge-mass would therefore minimize the potential environmental hazard and economic burden stemming from its disposal. Recently, anaerobic digestion was suggested as an alternative to aquaculture ... Read more >>

Aquaculture (Aquaculture (Amsterdam, Netherlands))
[2010, 306(1-4):1-6]

Cited: 12 times

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Microbial diversity of biological filters in recirculating aquaculture systems.

Harold J Schreier, Natella Mirzoyan, Keiko Saito,

Development of environmentally sustainable farming of marine and freshwater species using recirculating aquaculture systems (RASs) requires a complete understanding of the biological component involved in wastewater treatment. This component integrates biofilters composed of microbial communities whose structure, dynamics, and activities are responsible for system success. Engineering highly efficient, environmentally sound, ... Read more >>

Curr Opin Biotechnol (Current opinion in biotechnology)
[2010, 21(3):318-325]

Cited: 30 times

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Quality of brackish aquaculture sludge and its suitability for anaerobic digestion and methane production in an upflow anaerobic sludge blanket (UASB) reactor

Mirzoyan, Parnes, Singer, Tal, Sowers, Gross,

Intensive recirculating aquaculture systems (RAS) produce high volumes of biosolid waste. The high salinity of brackish/marine sludge limits its use in landfill sites and waste outflows and it is a source of pollution. A reduction in sludge mass would therefore minimize the potential environmental hazard and economic burden stemming from ... Read more >>

Aquaculture (Aquaculture (Amsterdam, Netherlands))
[2008, 279(1-4):35-41]

Cited: 13 times

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Modification of the biophysical characteristics of membranes in commensal Escherichia coli strains from breast cancer patients.

Natella Mirzoyan, Astghik Pepoyan, Armen Trchounian,

Escherichia coli G35 N49 strain, from the gut of breast cancer patients, in comparison with the E. coli G35 N61 strain, from the gut of healthy people, shows in vitro reduction in growth rates and maximal growth yield. The changes in certain membrane characteristics, such as low membrane potential and ... Read more >>

FEMS Microbiol Lett (FEMS microbiology letters)
[2006, 254(1):81-86]

Cited: 4 times

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