Fate of ammonia in the atmosphere?a review for applicability to hazardous releases

Renard, Jean J.; Calidonna, Sheryl E.; Henley, Michael V.

doi:10.1016/j.jhazmat.2004.01.015

Cited by 138 publications

(65 citation statements)

References 159 publications

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“…The solute transport parameters were considered using the following values: the molecular diffusion coefficients in free water (D w ) for NH 4 + -N and NO 3 − -N were 1.52 and 1.64 cm 2 day −1 , respectively, the molecular diffusion coefficient in air (D a ) for NH 3 was 18057.6 cm 2 day −1 , the longitudinal dispersivity (12 cm) was considered equal to one-tenth of the profile depth (Phogat et al, 2012), and the Henry's law constant (K H , at 25 • C) for NH 4 + -N was 2.95 × 10 −4 (Renard et al, 2004). The distribution coefficient (K d ) for NH 4 + and for different soil layers is listed in Table 3, based on values for this region reported by Chen and Chiang (1963).…”

Section: Input Parametersmentioning

confidence: 99%

Evaluation of nitrogen balance in a direct-seeded-rice field experiment using Hydrus-1D

Šimůnek

Zhang

et al. 2015

Agricultural Water Management

115

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a b s t r a c tNitrogen (N) pollution is a global environmental problem that has greatly increased the risks of both the eutrophication of surface waters and contamination of ground waters. The majority of N pollution mainly comes from agricultural fields, in particular during rice growing seasons. In recent years, a gradual shift from the transplanting rice cultivation method to the direct seeding method has occurred, which results in different water and N losses from paddy fields and leads to distinct impacts on water environments. The N transport and transformations in an experimental direct-seeded-rice (DSR) field in the Taihu Lake Basin of east China were observed during two consecutive seasons, and simulated using Hydrus-1D model. The observed crop N uptake, ammonia volatilization (AV), N concentrations in soil, and N leaching were used to calibrate and validate the model parameters. The two most important inputs of N, i.e., fertilization and mineralization, were considered in the simulations with 220 and 145.5 kg ha −1 in 2008 and 220 and 147.8 kg ha −1 in 2009, respectively. Ammonia volatilization and nitrate denitrification were the two dominant pathways of N loss, accounting for about 16.0% and 38.8% of the total N input (TNI), respectively. Both nitrification and denitrification processes mainly occurred in the root zone. N leaching at 60 and 120 cm depths accounted for about 6.8% and 2.7% of TNI, respectively. The crop N uptake was 32.1% and 30.8% of TNI during the 2008 and 2009 seasons, respectively, and ammonium was the predominant form (74% of the total N uptake on average). Simulated N concentrations and fluxes in soil matched well with the corresponding observed data. Hydrus-1D could simulate the N transport and transformations in the DSR field, and could thus be a good tool for designing optimal fertilizer management practices in the future.

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Section: Input Parametersmentioning

confidence: 99%

Evaluation of nitrogen balance in a direct-seeded-rice field experiment using Hydrus-1D

Šimůnek

Zhang

et al. 2015

Agricultural Water Management

115

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“…Increase in OH• [119] Formation of acid rain (HNO 3 ), ammonium nitrate, salts, aerosols [129] Further Reactions Inhibits isoprene production [119] Decomposition to CO 2 Precursor for organohalogens [130] Source of NO radicals leading to stratospheric O 3 destruction…”

Section: Sulphate Aerosol Productionmentioning

confidence: 99%

“…x as isoprene nitrate [119] Tropospheric ozone formation Secondary aerosol formation [118] Secondary aerosol formation [131] Reduce CH 4 lifetime [119] Atmospheric oxidation of sulphur compounds, aerosol formation resulting in effects on global radiation budget [129] *Fluxes vary depending on species, aquatic environment composition and environmental conditions, therefore numbers presented here are an indication from the literature. **Global warming potential over 20 years.…”

Section: Sulphate Aerosol Productionmentioning

confidence: 99%

An overview of the potential environmental impacts of large-scale microalgae cultivation

et al. 2014

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“…The catalyst in equation (5) above may be ammonia and when this is the case, rapid acidic component of the atmosphere may be produced in the conversion process (Renard et al, (2004).…”

Section: Formation Mechanismmentioning

confidence: 99%

A Critical Review of Natural Gas Flares-Induced Secondary Air Pollutants

Sonibare

2013

Global NEST Journal

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Application of material balance analysis (in one of our previous studies) to natural gas flare in the upstream petroleum operations confirmed the emission of primary air pollutants in form of CO, CO 2 , NO, and NO 2 from "sweet" natural gas while "sour" gas emits SO 2 in addition; incomplete combustion may be an impetus for the release of volatile organic compounds (VOCs) into the atmosphere from this same source. In this article, the significance of these gaseous emissions in the formation of secondary air pollutants in the atmosphere is reviewed for the purpose of air pollution control strategy. The goal is to describe the formation mechanism, to determine the influencing factors in formation along with environmental impacts and to identify the required technological and policy control approach for an improved environmental protection.

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Fate of ammonia in the atmosphere?a review for applicability to hazardous releases

Cited by 138 publications

References 159 publications

Evaluation of nitrogen balance in a direct-seeded-rice field experiment using Hydrus-1D

Evaluation of nitrogen balance in a direct-seeded-rice field experiment using Hydrus-1D

An overview of the potential environmental impacts of large-scale microalgae cultivation

A Critical Review of Natural Gas Flares-Induced Secondary Air Pollutants

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