What question did this study set out to answer?

This research aims to evaluate the effectiveness of biochar-treated swine manure in reducing ammonia and hydrogen sulfide emissions during cropland application.

February 12, 2026Applied Engineering in Agriculture

Mitigation of Ammonia and Hydrogen Sulfide Emissions from Biochar-Treated Swine Manure After Application to Cropland Soil

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Authors

SOSamuel C. O’BrienIowa State University JKJacek A. Koziel BRBrett C. RamirezUniversity of Arizona

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Implication

Research demonstrates effective emission reduction in cropland soil with biochar-treated manure, indicating sustainable practices for livestock waste management.

Key Points

This research aims to evaluate the effectiveness of biochar-treated swine manure in reducing ammonia and hydrogen sulfide emissions during cropland application.
Controlled lab-scale experiments
Testing biochar thickness on emissions
Application of biochar prior to manure pumpout
Quantitative measurement of NH3 and H2S emissions
NH3 emissions reduced by approximately 90% and H2S emissions by 61% in the first 24 hours after treatment.
Biochar application thickness of 6.5 mm was effective; 2.5 mm was less effective.
Biochar treatment during storage also reduced emissions, but less significantly than immediate application.

Cite This Study

O’Brien et al. (2026) studied this question.

synapsesocial.com/papers/698d6d795be6419ac0d52799 https://doi.org/10.13031/aea.16394

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Implication

Research demonstrates effective emission reduction in cropland soil with biochar-treated manure, indicating sustainable practices for livestock waste management.

Mitigation of Ammonia and Hydrogen Sulfide Emissions from Biochar-Treated Swine Manure After Application to Cropland Soil

Discussion

Member takes

Implication

Key Points

Cite This Study

Mitigation of Ammonia and Hydrogen Sulfide Emissions from Biochar-Treated Swine Manure After Application to Cropland Soil

Discussion

Member takes

Implication

Key Points

Cite This Study

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