Nitrate removal by electro-bioremediation technology in Korean soil

Choi, Jeong‐Hee; Maruthamuthu, S.; Lee, Hyun-Goo; Ha, Taehyun; Bae, Jeong-Hyo

doi:10.1016/j.jhazmat.2009.02.162

Cited by 60 publications

(20 citation statements)

References 49 publications

(54 reference statements)

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“…This measures how efficiently plants use and retain nitrogen. All of the nitrogen a plant gains is considered as soil nitrogen and all nitrous oxide emissions is considered to originate in the soil before a plant absorbs the nitrogen used to generate the nitrous oxide, since plants can absorb and utilize ammonium and nitrate forms of nitrogen through their roots [20]. This method of measuring NUE corresponds with the first definition of nitrogen use efficiency.…”

Section: What Is Nue and How Can It Be Managed?mentioning

confidence: 99%

“…Anaerobic denitrification is caused by an excess of water in fields [23]. NUE measures the amount of nitrogen in growing soil at the start of a season, via soil samples and lab analysis, how much of this nitrogen was fixed [20], how much was lost via leaching and denitrification, and how much nitrogen is remaining in the soil. The more nitrogen the crop's uptake compared to the amount left in the soil or lost, the more nitrogen use efficient the system is.…”

Section: What Is Nue and How Can It Be Managed?mentioning

confidence: 99%

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A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

2017

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Management of nitrogen (N) is a challenging task and several methods individually and in combination are in use to manage its efficiency. However, nitrogen use efficiency (NUE) has not been improved to a level, only 33%, as predicted by the researchers while developing nitrogen management tools and methods. The primary objective of this review article is to evaluate methods and tools available to manage nitrogen. Several methods, soil testing, plant tissue testing, spectral response, fertilizer placement and timing and vegetative indexes (leaf area index, and NDVI) through drones, handheld sensors, and satellite imagery were reviewed on the subject of user-friendly and effectiveness towards NUE. No single method was found sufficient to counter the nitrogen loss. Some methods were found time consuming and unsynchronized with N uptake behavior of particular crop, for example, plant tissue testing. Use of precision agriculture tools, such as GreenSeeker, Holland Crop Circle, drone, and satellite imagery, were found better compared to conventional methods such as soil testing, but these tools can only be used when the crop is up. Therefore, N management is possible only through inseason N application methods. When 70% of the applied nitrogen is used by the crops within 25-30 days after planting, for example, corn and potatoes, it is required to apply major N rates through inseason approach and some N at planting using soil test reports. In conclusion, this article strongly advocates using two or more methods in combination when managing N.

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Section: What Is Nue and How Can It Be Managed?mentioning

confidence: 99%

Section: What Is Nue and How Can It Be Managed?mentioning

confidence: 99%

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

2017

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“…In conclusion, the in situ EK technique is feasible for the restoration of saline greenhouse soils in or no cultivation and an appropriate strategy is necessary for more effective remediation. 최근에는 이러한 전기동력학 기술을 시설재배지 토양의 염류 제 거에 적용하려는 다양한 시도가 이루어지고 있다 [6][7][8][9][10][11]. Cho et al, [6,7]은 실험실 규모의 EK 실험을 통해 시설재배지 토양의 주요 염 류인 Na …”

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A Field Study on Electrokinetic Removal of Salts from Greenhouse Soil

Lee¹,

Choi²,

Sim³

et al. 2014

Korean Chemical Engineering Research

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, W×L×D) was performed in a greenhouse to remove salts from saline soil. Initially, the greenhouse soil had high electrical conductivity (EC), about 9 dS/m, and contained mainly Ca 2+, Cl − and SO 4 2− ions. After 2 weeks of EK treatment, the soil EC was reduced to 52% compared with its initial value. The EC reduction was mostly achieved within the first week (47%) due to removal of Na + and Cl − ions, but ions with a high adsorption capacity such as Ca 2+ and SO 4 2− ions were difficult to be removed. During the EK test, the soil temperature increased and it reached around 50 o C at some regions. For in situ application to soils in cultivation, the current should be controlled to limit increases in temperature, especially near the cathodes. In conclusion, the in situ EK technique is feasible for the restoration of saline greenhouse soils in or no cultivation and an appropriate strategy is necessary for more effective remediation.

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“…This combination helps minimize the associated problem while making the process economically viable [18]. Electro bioremediation where efect of electric ield is observed on pollutant reduction has also been studied [19][20][21]. Nitrate reduction by biological means has been reported to be carried out in luidized expanded bed bioreactors [22], submerged membrane bioreactor [23], continuous low bioreactors [24] as well as packed bed reactor [25] with PVS tubes [26], alginate [27], K-Carrageenan [28] and microbial cellulose [29] as immobilization matrices.…”

Section: Introductionmentioning

confidence: 99%

Microbe-Based Strategy for Plant Nutrient Management

Chaudhuri¹,

Mishra²,

De³

et al. 2017

Biological Wastewater Treatment and Resource Recovery

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The rapid industrialization and urbanization of developing countries such as India have encroached on cultivable lands to meet the demands of an ever-increasing population. The altered land use paterns with increased fertilizer use has increased crop yields with leaching of major portion of the applied nutrients from the soil. Nitrates and phosphates are the agricultural pollutants that are discharged into aquifers due to anthropogenic reasons causing severe environmental and health problems. Production of these nutrients requires energy and inite resources (rock phosphate, which has gradually depleting reserves). An alternative management strategy would be to sequester excess nutrients within a biomass that is reused for agriculture. Two discrete enriched microbial consortia with the potential of simultaneous nitrate and phosphate sequestration upon application as biofertilizer restricted them within the plant root zone, ensuring prevention of eutrophication through leaching while making it available for uptake by plants. The nutrient accumulated biomass enhanced the crop yield by 21.88% during mung bean cultivation with maintained elemental content and other nutritional qualities. The major drawback of conventional biofertilizer application (slow release and action) could be overcome using this formulation leading to environmental protection, crop yield enhancement and soil fertility maintenance post-cultivation.

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Nitrate removal by electro-bioremediation technology in Korean soil

Cited by 60 publications

References 49 publications

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

A Review of Methods to Improve Nitrogen Use Efficiency in Agriculture

A Field Study on Electrokinetic Removal of Salts from Greenhouse Soil

Microbe-Based Strategy for Plant Nutrient Management

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