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Sustained whole-chain ammonia mitigation in pig manure via acidogenic fermentation by-products.

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Τίτλος: Sustained whole-chain ammonia mitigation in pig manure via acidogenic fermentation by-products.
Συγγραφείς: Chu A; Shandong Key Laboratory of Synergistic Control of Complex Multi-Media Pollution, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; School of Cyber Science and Technology, Shandong University, Qingdao 266237, China., Qiao P; Shandong Key Laboratory of Synergistic Control of Complex Multi-Media Pollution, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China., Ma S; Shandong Key Laboratory of Synergistic Control of Complex Multi-Media Pollution, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China., Gu M; Key Laboratory of Ecological Restoration of Regional Contaminated Environment, Ministry of Education, College of Environment, Shenyang University, Shenyang 110044, China., Shen L; Shandong Key Laboratory of Synergistic Control of Complex Multi-Media Pollution, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China., George C; Universite Claude Bernard Lyon 1, CNRS, IRCELYON, UMR 5256, Villeurbanne 69100, France., Mellouki A; University Mohammed 6 Polytechnique, Ben Guerir 43150, Morocco; Institut de Combustion, Aérothermique, Réactivité et Environnement, CNRS, Orléans 45071, France., Zeng Y; Shandong Key Laboratory of Synergistic Control of Complex Multi-Media Pollution, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; Sino-French Research Institute for Ecology and Environment (ISFREE), School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; Shandong University-Weihai Research Institute of Industrial Technology, Weihai 264209, China. Electronic address: yangzeng@email.sdu.edu.cn.
Πηγή: Journal of hazardous materials [J Hazard Mater] 2026 Aug 01; Vol. 514, pp. 142834. Date of Electronic Publication: 2026 Jun 29.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9422688 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3336 (Electronic) Linking ISSN: 03043894 NLM ISO Abbreviation: J Hazard Mater Subsets: MEDLINE
Imprint Name(s): Original Publication: Amsterdam : Elsevier
Ιατρικοί όροι (MeSH): Manure*/analysis , Ammonia*/analysis , Ammonia*/chemistry , Acetic Acid*/chemistry, Metals, Heavy/analysis ; Animals ; Fermentation ; Composting ; Hydrogen-Ion Concentration ; Swine
Περίληψη: Livestock production generates roughly 65% of global agricultural ammonia (NH3) emissions. Manure acidification suppresses NH3 volatilization effectively, but conventional chemical acidifiers are limited by handling risks and site-specific costs. This study evaluated two industrial fermentation by-products - distillers' grains (DG) and vinegar residue (VR) - as alternative acidogenic amendments for whole-chain NH3 mitigation across pig manure storage, composting, and soil application. A single application of DG and VR at by-product-to-manure ratios of 1:3 and 2:3 reduced storage-stage emissions by 93.7% and 94.5%, statistically indistinguishable from sulfuric acid (94.1%). Unlike the rapid pH rebound observed with the chemical acidifiers, DG and VR sustained low pH throughout storage through continued organic-acid production. The same initial amendments further reduced NH3 emissions during subsequent composting by 13-27% and extended the thermophilic phase by up to 7 days. At the soil-application stage, the resulting composts suppressed NH3 volatilization by 49-70% relative to urea alone and enhanced soil enzyme activities. Heavy-metal stabilization was also improved, with greater proportions of Hg, Pb, and Cr shifting to more stable fractions while the final products remained within agricultural safety limits. A screening-level whole-chain assessment indicates that this regional reuse pathway is most favorable within a 10-15 km sourcing radius, where transport-related climate burdens remain below 1.017 kg CO2e t-1 manure, with the advantage eroding under longer-distance hauling. These findings identify acidic fermentation by-products such as DG and VR as promising candidates for regional reuse in integrated manure management, pending field-scale, microbial, and techno-economic validation.
(Copyright © 2026 Elsevier B.V. All rights reserved.)
Competing Interests: Declaration of Competing Interest The authors declare that they have no conflict of interest.
Contributed Indexing: Keywords: Acid waste residue; Acidification; Ammonia; Pig manure
Substance Nomenclature: 0 (Manure)
7664-41-7 (Ammonia)
Q40Q9N063P (Acetic Acid)
0 (Metals, Heavy)
Entry Date(s): Date Created: 20260701 Date Completed: 20260725 Latest Revision: 20260725
Update Code: 20260725
DOI: 10.1016/j.jhazmat.2026.142834
PMID: 42385577
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1873-3336
DOI:10.1016/j.jhazmat.2026.142834