The effects of biochar derived from feedstock with different Si and Al concentration on soil N2O and CO2 emissions

Wang, Baihui; Gao, Yu; Lai, Xiaoqin; Luo, Laicong; Zhang, Xi; Hu, Dongnan; Zhan, Siyan; Hu, Shu‐Fen; Zhang, Ling

doi:10.1016/j.envpol.2022.120731

Cited by 3 publications

(1 citation statement)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nitrous oxide (N 2 O), as a kind of representative greenhouse gas, is recognized as a vital contributor to aggravating global warming. With the greenhouse effect potential of N 2 O being 265 times larger than that of CO 2 , the increasing emission of N 2 O further exacerbates environmental concerns, including numerous ecological consequences, bringing on global climate change and posing a serious threat to the existence of the ozone layer . The surge in N 2 O emission primarily originates from anthropogenic sources, of which the production of nitric acid and adipic acid accounts for a large part; meanwhile, the upward trend in vehicle exhaust also stands out as a critical factor .…”

Section: Introductionmentioning

confidence: 99%

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Li,

Duan,

Zhao

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

Nitrous oxide (N 2 O) has a detrimental impact on the greenhouse effect, and its efficient catalytic decomposition at low temperatures remains challenging. Herein, the cobalt-based highentropy oxide with a spinel-type structure (Co-HEO) is successfully fabricated via a facile coprecipitation method for N 2 O catalytic decomposition. The obtained Co-HEO catalyst displays more remarkable catalytic performance and higher thermal stability compared with single and binary Co-based oxides, as the temperature of 90% N 2 O decomposition (T 90 ) is 356 °C. A series of characterization results reveal that the synergistic effect of multiple elements enhances the reducibility and augments oxygen vacancy in the high-entropy system, thus boosting the activity of the Co-HEO catalyst. Moreover, density functional theory (DFT) calculations and the temperature-programmed surface reaction (TPSR) with isotope labeling demonstrate that N 2 O decomposition on the Co-HEO catalyst follows the Langmuir−Hinshelwood (L-H) mechanism with the promotion of abundant oxygen vacancies. This work provides a fundamental understanding of the synergistic catalytic effect in N 2 O decomposition and paves the way for the novel environmental catalytic applications of HEO.

show abstract

Section: Introductionmentioning

confidence: 99%

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Li,

Duan,

Zhao

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Amelioration of salt‐affected soil using combined amendments for synergistic effects: Impacts and management implications

Nguyen,

Thai

2024

Soil Use and Management

View full text Add to dashboard Cite

Saline acid sulphate soils are commonly ameliorated using traditional amendments like lime and cow manure. Biochar, derived from crop residues, is another potential remedy for this type of soil. Their combined use may create synergistic effects, necessitating further investigation. This study aims to assess the combined impacts of biochar with traditional amendments on soil quality, properties and rice yield. A field experiment was established with six treatments: no‐amendment (control), lime, cow manure, biochar, combined lime and biochar, and combined cow manure and biochar with rice (Oryza sativa) planted in four replicates. The study revealed that the effects of these amendments on soil properties were driven by their inherent characteristics and secondary processes, such as neutralization. Combining biochar with lime significantly increased soil pH (6.2), and exchangeable calcium (648.6 cmol(+) kg−1), while reducing exchangeable aluminium (11.83 cmol(+) kg−1) and iron (37.5 cmol(+) kg−1), compared to the control. Meanwhile, combining biochar with cow manure notably enhanced Mehlich‐1 phosphorous (3.4 mg kg−1), organic carbon (4.99%), ammonium (27.0 mg kg−1) and cation exchange capacity (17.2 cmol(+) kg−1). Biochar combined with cow manure exhibited greater synergetic effects on soil quality than when combined with lime. Consequently, these combinations improved the soil quality index, which exhibited a strong correlation with rice yield and biomass when its value was below 0.4. This finding indicates that these combinations exhibit insignificant synergistic effects on rice yield and growth. Further research is needed to elucidate these findings and explore the optimal application rates concerning soil properties for improved management practices.

show abstract

Biochar Applied in Places Where Its Feedstock Was Produced Mitigated More CO2 Emissions from Acidic Red Soils

Lai,

Yi,

Xie

et al. 2024

Agronomy

View full text Add to dashboard Cite

Agricultural soil is the main source of greenhouse gas emissions, among which carbon dioxide (CO2) is an important greenhouse gas, impacting the global climate. In China, as a large rice-producing country, carbon sequestration and CO2 mitigation in paddy soil are crucial for the mitigation of global climate change. While biochar has been widely used in the mitigation of soil greenhouse gas emissions, the application site of biochar, i.e., whether or not it is the same as its feedstocks, may generate different effects on soil CO2 emissions due to the differences in the element and nutrient concentrations in its feedstocks, especially when applied in fertilized soil. In order to explore the effects of biochar application with different feedstocks on the mitigation of CO2 emissions from paddy soil, this experiment took paddy soil in a red soil area as the research object, using rice straw and Camellia oleifera fruit shell as raw materials to produce biochar (adding an amount of 40 g kg−1 soil) and urea as an external nitrogen source (adding an amount of 200 mg kg−1 soil). The effects of two different types of biochar derived from feedstocks with different producing origins on the CO2 emissions from paddy soil were studied via laboratory control incubation studies. The results showed that (1) the effects of rice straw biochar addition on the soil pH, NO3−-N and total available nitrogen (AN) content were significantly higher than those of Camellia oleifera fruit shell biochar (the scale of the increase was higher by 6.40%, 579.7% and 180.1%, respectively). (2) The CO2 emission rate and cumulative emissions of soil supplemented with rice straw biochar were significantly lower than in that supplemented with Camellia oleifera fruit shell biochar (decreases of 28.0% and 27.5%, respectively). Our findings suggest that the efficiency of emission mitigation of rice straw biochar is better than that of Camellia oleifera fruit shell applied to paddy soil. While future studies considering more types of greenhouse gases will be necessary to expand these findings, this study indicates that biochar prepared from in situ feedstock can be used to reduce greenhouse gas emissions in rice fields, so as to ensure sustainable development and achieve energy conservation and emission reduction goals. This study will benefit future agricultural practices when choosing biochar as a greenhouse gas mitigation strategy in the context of global warming, as well as other global changes following global warming, caused by elevated atmospheric greenhouse gases.

show abstract

The effects of biochar derived from feedstock with different Si and Al concentration on soil N2O and CO2 emissions

Cited by 3 publications

References 64 publications

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Amelioration of salt‐affected soil using combined amendments for synergistic effects: Impacts and management implications

Biochar Applied in Places Where Its Feedstock Was Produced Mitigated More CO2 Emissions from Acidic Red Soils

Contact Info

Product

Resources

About

The effects of biochar derived from feedstock with different Si and Al concentration on soil N2O and CO2 emissions

Cited by 3 publications

References 64 publications

Boosting N2O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Boosting N2O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Amelioration of salt‐affected soil using combined amendments for synergistic effects: Impacts and management implications

Biochar Applied in Places Where Its Feedstock Was Produced Mitigated More CO2 Emissions from Acidic Red Soils

Contact Info

Product

Resources

About

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides

Boosting N₂O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides