Characteristics and Driven Factors of Nitrous Oxide and Carbon Dioxide Emissions in Soil Irrigated with Treated Wastewater

Xue, Yandong; Yang, Peiling; Luo, Yi; Li, Yunkai; Ren, Shumei; Su, Yanping; Niu, Yong-tao

doi:10.1016/s2095-3119(12)60134-8

Cited by 18 publications

(6 citation statements)

References 42 publications

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“…Fernández-Luqueño et al [8] observed that applying urban wastewater to soil significantly increased the mean CO 2 emission rate 2.4 times (1.74 μgC/kg soil/h) compared to the unamended soil (0.74 μgC/kg soil/h), and cultivating maize further increased it 3.2 times (5.61 μgC/kg soil/h). In a similar study, Xue et al [9] noticed that the cumulative CO 2 emission was significantly influenced by treated wastewater application on a silt loam soil. Large increases in CO 2 fluxes have been observed immediately following application of farm effluents to soils, being attributed to the decomposition of labile C sources [10].…”

Section: Carbon Dioxide Emissionmentioning

confidence: 86%

“…Urine addition to soils can result in increases in CO 2 fluxes, over and above the amounts of C applied, with the release of native soil C indicative of a priming effect [19]. Xue et al [9] measured CO 2 emission from a silt loam soil irrigated with treated wastewater and noticed that the cumulative CO 2 losses showed a maximum at 60% WFPS when N fertiliser was incorporated in soils. They also observed higher CO 2 emissions in soils incubated at 60% and 80% WFPS compared to that in the drier (40% WFPS) and wetter (100% WFPS) soils.…”

Section: Factors Affecting Ghg Emissionmentioning

confidence: 99%

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Greenhouse gas emission from wastewater irrigated soils

Thangarajan

Kunhikrishnan

Seshadri

et al. 2012

WIT Transactions on Ecology and the Environment

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With increasing demand for world water supply, wastewater reuse is a great opportunity to meet the water need, especially for agricultural and industrial development. Wastewater originates from many sources and hence its composition differs from origin and treatment processes. Wastewater rich in organic matter acts as a soil conditioner, thereby enhancing soil health. Wastewater also acts as a source of nutrient input in agriculture which in turn can reduce, or even eliminate the need for commercial fertilisers. However, wastewater usage in agriculture poses several threats like eutrophication, salinity, toxic chemicals (heavy metal(loids), pesticides), pathogen contamination, and most notably, nutrient leaching, and greenhouse gas (GHG) emission. These threats affect public health, soil and ground water resources, environment, crop quality, ecological, and property values. Biological degradation of the organic matter present in wastewater is considered one of the anthropogenic sources of major GHGs (carbon dioxide (CO 2 ), nitrous oxide (N 2 O), and methane (CH 4 ). In this paper, an overview of various sources of wastewater, effects of wastewater application on GHG emission from soil, and the strategies to mitigate wastewater-induced GHG emission from soils is presented.

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Section: Carbon Dioxide Emissionmentioning

confidence: 86%

Section: Factors Affecting Ghg Emissionmentioning

confidence: 99%

Greenhouse gas emission from wastewater irrigated soils

Thangarajan

Kunhikrishnan

Seshadri

et al. 2012

WIT Transactions on Ecology and the Environment

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“…() measured the emissions of CO 2 , CH 4 and N 2 O from soil irrigated with waste water in the same region under controlled conditions in a greenhouse experiment, and Xue et al . () reported results from a similar study in China. None of those investigators seem to have measured simultaneously the redox potentials and the gaseous emissions from soil irrigated with untreated waste water.…”

Section: Introductionmentioning

confidence: 82%

Changes in soil redox potential in response to flood irrigation with waste water in central Mexico

González-Méndez

Webster

Fiedler

et al. 2017

European J Soil Science

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Summary Irrigation with untreated sewage water adds fresh organic matter to the soil. When it is applied by flooding, as in the Mezquital Valley of Mexico, many of the pores in the soil become temporarily waterlogged and depleted of oxygen, and reduction generates nitrous oxide (N2O) and methane (CH4). We monitored the redox potential, Eh, in the soil at two sites in the Mezquital Valley to discover whether the short‐term gaseous emissions matched the changes in Eh. One site is irrigated periodically by flooding with waste water and has alfalfa, rye grass and maize grown in succession; the other site grows maize with water from summer rain only. Each electrode buried in the soil for the purpose produced sequences of measurements that were correlated in time. We modelled the correlation and took it into account to analyse the effects of the irrigation by residual maximum likelihood (reml). After each flooding, the redox potential under alfalfa and rye grass decreased by 150–200 mV from a norm of about 450 mV for 2 days, after which it returned to its norm. The short‐term response to flooding under maize was similar, but the redox potential did not recover completely; instead there was a decrease from one irrigation event to another, in particular as a result of heavy rain in September that saturated the soil. The soil under rain‐fed maize was slower to respond, partly, we believe, because infiltration into the less aggregated clay soil and drainage from it were also slow. Irrigation with untreated sewage water caused a sharp decrease in Eh lasting 1–2 days. It seems to have depleted the soil of oxygen, causing reduction in microhabitats rich in carbon and nitrogen and generation of N2O, which was captured in the closed chambers that we had installed. Highlights Land in the Mezquital Valley of Mexico emits much greenhouse gas when irrigated with sewage water. The soil's redox potential was monitored in situ as crops were irrigated or depended solely on rain. Each irrigation caused a decrease in the soil's redox potential of 150–200 mV for 2 days. The decrease in redox potential corresponded in time with emission of nitrous oxide.

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“…In comparison with FW, RW contains higher nutrients, salt, and bacteria, and the input of NO 3 − -N, NH 4 + -N and organic matter may promote N 2 O emissions. Some studies found that RW irrigation increased the production of N 2 O, because the available C and N in RW enhanced the microorganism communities and their activities (Ndour et al 2008;Xue et al 2012). However, C and N input into soils by RW irrigation cannot be fully utilized by microorganisms in soils, because they can be absorbed by crop roots, or leaching to deep soils (Harrison et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Irrigation Water Types, N Fertilizer Types, and Soil Moisture Contents on N2O Emissions and N Fertilizer Transformations in Soils

Shang

Ren

Yang

et al. 2016

Water Air Soil Pollut

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The use of reclaimed water (RW) for irrigation alleviates agricultural water shortages. However, N 2 O emissions and N fertilizer transformations in soils irrigated with RW under different N fertilizer types and soil moisture contents are poorly understood. A 216-h laboratory incubation experiment was conducted to evaluate the effects of irrigation water types (RW and fresh water, FW), N fertilizer types ( 15 N-labeled KNO 3 and (NH 4 ) 2 SO 4 ), and soil moisture contents at 40, 60, and 90 % water-filled pore space (WFPS) on N 2 O emissions and N fertilizer transformations in intact soil cores. The results showed that cumulative N 2 O emissions ranged from 3.78 to 36.30 mg N m −2 , and fertilizer-derived N 2 O losses accounted for 0.14-2.44 % of N fertilizers, while fertilizer-derived N residues (NO 3 − -N + NH 4 + -N) accounted for 10.16-26.95 % of N fertilizers. The N 2 O emissions at 40 % WFPS and fertilizer-derived N residues at 60 % WFPS in soils irrigated with RW were significantly (10.98 and 20.95 %, respectively) higher than those irrigated with FW, while fertilizer-derived N 2 O losses at 60 % WFPS in soils irrigated with RW were 10.26 % higher than those irrigated with FW. The N 2 O emissions and fertilizer-derived N 2 O losses in soils amended with (NH 4 ) 2 SO 4 at 40 and 60 % WFPS were significantly (26.61-178.84 %) larger than those amended with KNO 3 , while fertilizer-derived N residues in soils amended with KNO 3 were significantly (41.47 %) higher than those amended with (NH 4 ) 2 SO 4 . The N 2 O emissions significantly increased with increasing soil moisture content. Our results indicate that N fertilizer types and soil moisture contents are the two important factors regulating N 2 O emissions and N fertilizer transformations. When RW irrigation is used, controlling soil moisture contents within 41 and 60 % WFPS (the optimum is 46 % WFPS) and application of KNO 3 can reduce N 2 O emissions and fertilizer-derived N 2 O losses, and correspondingly increase fertilizer-derived N residues, which can contribute to climate change mitigation.

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Characteristics and Driven Factors of Nitrous Oxide and Carbon Dioxide Emissions in Soil Irrigated with Treated Wastewater

Cited by 18 publications

References 42 publications

Greenhouse gas emission from wastewater irrigated soils

Greenhouse gas emission from wastewater irrigated soils

Changes in soil redox potential in response to flood irrigation with waste water in central Mexico

Effects of Different Irrigation Water Types, N Fertilizer Types, and Soil Moisture Contents on N2O Emissions and N Fertilizer Transformations in Soils

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