Nitrite Reduction by Siderite

Rakshit, Sudipta; Matocha, Christopher J.; Coyne, Mark S.

doi:10.2136/sssaj2007.0296

Cited by 68 publications

(59 citation statements)

References 51 publications

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“…6b and c). Cui and Eriksen (1996) (Erdem et al, 2004), U(VI) (Ithurbide et al, 2009;O'Loughlin et al, 2010), nitrite (Rakshit et al, 2008), and selenite (Scheinost et al, 2008). The reaction rate of Cr(VI) with natural siderite increased with decreasing siderite particle size, consistent with heterogeneous reaction (Erdem et al, 2004).…”

Section: Tc(vii) Reduction In Anoxic Sedimentsmentioning

confidence: 61%

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Pertechnetate (TcO4−) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA

Peretyazhko

Zachara

Kukkadapu

et al. 2012

Geochimica et Cosmochimica Acta

104

106

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Section: Tc(vii) Reduction In Anoxic Sedimentsmentioning

confidence: 61%

“…The redox product could be ferrihydrite or goethite with size <8 nm (Janot et al, 1973). Both these oxides have been identified as reaction products of siderite oxidation (Rakshit et al, 2008).…”

Section: Mö Ssbauer Spectroscopymentioning

confidence: 99%

Pertechnetate (TcO4−) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA

Peretyazhko

Zachara

Kukkadapu

et al. 2012

Geochimica et Cosmochimica Acta

104

106

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“…Zero-valent metal (Fe 0 , Al 0 ) will remove [5,38,40] nitrates [41][42][43][44][45][46][47][48][49][50][51][52][53][54], nitrites [55,56], bromates [54], chlorates [54], organic compounds (including organo-halides [4][5][6][7]16,[57][58][59][60][61][62][63]) and metals (Ag [64], Al [5], As [40,65,66], Ba [5], Cd [12,64], Co [40], Cr [5,63], Cu [5,42], Fe [5], Hg [64], Mn [5], Ni [42], Pb …”

Section: Space Velocitymentioning

confidence: 99%

Sustainable Zero-Valent Metal (ZVM) Water Treatment Associated with Diffusion, Infiltration, Abstraction, and Recirculation

Antia¹

2010

Sustainability

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Socio-economic, climate and agricultural stress on water resources have resulted in increased global demand for water while at the same time the proportion of potential water resources which are adversely affected by sodification/salinisation, metals, nitrates, and organic chemicals has increased. Nano-zero-valent metal (n-ZVM) injection or placement in aquifers offers a potential partial solution. However, n-ZVM application results in a substantial reduction in aquifer permeability, which in turn can reduce the amount of water that can be abstracted from the aquifer. This study using static diffusion and continuous flow reactors containing n-ZVM and m-ZVM (ZVM filaments, filings and punchings) has established that the use of m-ZVM does not result in a reduction in aquifer permeability. The experimental results are used to design and model m-ZVM treatment programs for an aquifer (using recirculation or static diffusion). They also provide a predictive model for water quality associated with specific abstraction rates and infiltration/injection into an aquifer. The study demonstrates that m-ZVM treatment requires 1% of the weight required for n-ZVM treatment for a specific flow rate. It is observed that 1 t Fe 0 will process 23,500 m 3 of abstracted or infiltrating water. m-ZVM is able to remove >80% of nitrates from flowing water and adjust the water composition (by reduction) in an aquifer to optimize removal of nitrates, metals and organic compounds. The experiments demonstrate that ZVM treatment of an aquifer can be used to reduce groundwater salinity by 20 -> 45% and that an aquifer remediation program can be designed to desalinate an aquifer. Modeling indicates that widespread application of m-ZVM water treatment may reduce global socio-economic, climate and agricultural stress on water resources. The rate of oxygen formation during water reduction OPEN ACCESSSustainability 2010, 2 2989[by ZVM (Fe 0 , Al 0 and Cu 0 )] controls aquifer permeability, the associated aquifer pH, aquifer Eh and the degree of water treatment that occurs.

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“…Literature is available on the impact of vermicompost on growth and productivity of different economically important cash crops in Indian subcontinent as well as from the other parts of the world (Bhattacharjee et al 2001;Rakshit et al 2008;Athani et al 2009;Ansari and Sukhraj, 2010;Joshi and Vig 2010;Lazcano and Dominguez 2010;Theunissen et al 2010;Gupta et al 2011;Tharmaraj et al 2011). Bhattacharjee et al (2001) reported significant increase in both grain and straw yield in upland paddy in Tripura (India) coupled with improvement in soil aggregation, water use efficiency and nutrient uptake in vermicompost treated plots compared to the control and NPK treated plots.…”

Section: Introductionmentioning

confidence: 99%

Effects of rubber leaf litter vermicompost on earthworm population and yield of pineapple (Ananas comosus) in West Tripura, India

Chaudhuri

Paul

Dey

et al. 2016

Int J Recycl Org Waste Agricult

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Purpose Rubber leaves are the abundant agro-waste and pineapple, the most economically important fruit crop in Tripura. So, in our present study, different amounts of rubber leaf vermicompost have been applied to the soils of pineapple plantation to determine their effects on earthworms-the soil ecosystem engineers, coupled with the vegetative growth and yield of pineapples. Methods During 30 months of field trial (2010-2012) in ICAR regional station, Lembucherra, West Tripura, the control plot (T 0 ) received no fertilizer, while experimental plots were fertilized with four different amounts of vermicompost viz. T 1 (5 tons ha -1 year -1 ), T 2 (10 tons ha -1 year -1 ), T 3 (20 tons ha -1 year -1 ) and T 4 (30 tons ha -1 year -1 ). Results A significant (p \ 0.05) but gradual increase in density (up to T 3 treatment) and biomass (up to T 4 treatment) of earthworms were recorded with the increasing amounts of vermicompost. During the second year, average length and width of leaves, number of leaves per plant, plant girth, fruit weight, fruit yield and fruiting percentage were highest in the T 3 plot compared to other treated plots and control. ConclusionThe present study reveals that crop yield is very much related to the particular concentration of vermicompost, beyond the level of which production declines and increase in vegetative growth, fruit weight and fruiting percentage of pineapple are strongly linked with the soil pH, av. P, av. K, clay content and the earthworm density of soils.

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Nitrite Reduction by Siderite

Cited by 68 publications

References 51 publications

Pertechnetate (TcO4−) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA

Pertechnetate (TcO4−) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA

Sustainable Zero-Valent Metal (ZVM) Water Treatment Associated with Diffusion, Infiltration, Abstraction, and Recirculation

Effects of rubber leaf litter vermicompost on earthworm population and yield of pineapple (Ananas comosus) in West Tripura, India

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