Impact of Urea and Ammoniacal Nitrogen Wastewaters on Soil: Field Study in a Fertilizer Industry (Bahía Blanca, Argentina)

Scherger, Leonardo; Zanello, Victoria; Lexow, Claudio

doi:10.1007/s00128-021-03280-x

Cited by 16 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Urea is also used on a smaller scale in skincare products and for selective catalytic reduction of nitrogen oxides in flue gases [1–3] . As a result of its global use, a large amount of urea enters the environment with wastewaters from the urea production plants [4, 5] . Additional urea contamination originates from mammalian protein metabolism and agricultural runoff [4, 5] .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] As a result of its global use, a large amount of urea enters the environment with wastewaters from the urea production plants. [4,5] Additional urea contamination originates from mammalian protein metabolism and agricultural runoff. [4,5] In aquatic systems urea undergoes hydrolysis to ammonia, which causes algae blooms and further decomposes in air to hazardous nitrogen oxides.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

Tatarchuk

Medvedev

et al. 2022

Angew Chem Int Ed

View full text Add to dashboard Cite

The electrochemical urea oxidation reaction (UOR) to N 2 represents an efficient route to simultaneous nitrogen removal from N-enriched waste and production of renewable fuels at the cathode. However, the overoxidation of urea to NO x À usually dominates over its oxidation to N 2 at Ni(OH) 2 -based anodes. Furthermore, detailed reaction mechanisms of UOR remain unclear, hindering the rational catalyst design. We found that UOR to NO x À on Ni(OH) 2 is accompanied by the formation of near stoichiometric amount of cyanate (NCO À ), which enabled the elucidation of UOR mechanisms. Based on our experimental and computational findings, we show that the formation of NO x À and N 2 follows two distinct vacancy-dependent pathways. We also demonstrate that the reaction selectivity can be steered towards N 2 formation by altering the composition of the catalyst, e.g., doping the catalyst with copper (Ni 0.8 Cu 0.2 (OH) 2 ) increases the faradaic efficiency of N 2 from 30 % to 55 %.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

Tatarchuk

Medvedev

et al. 2022

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…[4,5] Additional urea contamination originates from mammalian protein metabolism and agricultural runoff. [4,5] In aquatic systems urea undergoes hydrolysis to ammonia, which causes algae blooms and further decomposes in air to hazardous nitrogen oxides. [6] Thus, urea waste treatment is essential to prevent its negative effects on the environment.…”

Section: Introductionmentioning

confidence: 99%

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

Tatarchuk

Medvedev

et al. 2022

Angewandte Chemie

View full text Add to dashboard Cite

The electrochemical urea oxidation reaction (UOR) to N2 represents an efficient route to simultaneous nitrogen removal from N‐enriched waste and production of renewable fuels at the cathode. However, the overoxidation of urea to NOx− usually dominates over its oxidation to N2 at Ni(OH)2‐based anodes. Furthermore, detailed reaction mechanisms of UOR remain unclear, hindering the rational catalyst design. We found that UOR to NOx− on Ni(OH)2 is accompanied by the formation of near stoichiometric amount of cyanate (NCO−), which enabled the elucidation of UOR mechanisms. Based on our experimental and computational findings, we show that the formation of NOx− and N2 follows two distinct vacancy‐dependent pathways. We also demonstrate that the reaction selectivity can be steered towards N2 formation by altering the composition of the catalyst, e.g., doping the catalyst with copper (Ni0.8Cu0.2(OH)2) increases the faradaic efficiency of N2 from 30 % to 55 %.

show abstract

“…[1][2][3][4] These sectors continuously emit urea-enriched wastewater, which then enters the environment. 5,6 Additional urea contamination arises from human and animal metabolism. 1,5 Although urea itself is a nontoxic molecule, it decomposes in aquatic systems to form ammonia, which causes algae blooms and further undergoes oxidation in the atmosphere to hazardous nitrogen oxides.…”

mentioning

confidence: 99%

The effect of tensile strain in Pd–Ni core–shell nanocubes with tuneable shell thickness on urea electrolysis selectivity

et al. 2023

View full text Add to dashboard Cite

show abstract

Impact of Urea and Ammoniacal Nitrogen Wastewaters on Soil: Field Study in a Fertilizer Industry (Bahía Blanca, Argentina)

Cited by 16 publications

References 22 publications

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

Nickel‐Catalyzed Urea Electrolysis: From Nitrite and Cyanate as Major Products to Nitrogen Evolution

The effect of tensile strain in Pd–Ni core–shell nanocubes with tuneable shell thickness on urea electrolysis selectivity

Contact Info

Product

Resources

About