Co-pyrolysis of swine manure and pinewood sawdust: Evidence of cross-interaction of the volatiles and profound impacts on product characteristics

Li, Qingyin; Lin, Haisheng; Fan, Huailin; Zhang, Shu; Yuan, Xiangzhou; Wang, Yi; Hu, Song; Kontchouo, Félix Mérimé Bkangmo; Hu, Xun

doi:10.1016/j.renene.2021.07.104

Cited by 17 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure b shows the distribution of functional groups of biochar after pyrolysis. The absorption peaks of −OH, C–H, CO, CC, C–O–C, and Ar–H could be observed at 3428, 2950, 1745, 1640, 1110, and 806 cm –1 , respectively . Among them, the C–H absorbance of biochar obtained from the pyrolysis of pig manure, spirulina, and sawdust was remarkable, suggesting formation of some aliphatic structures from cracking reactions.…”

Section: Resultsmentioning

confidence: 98%

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂

Zhong,

Li,

Wang

et al. 2024

ACS Sustainable Resour. Manage.

Self Cite

View full text Add to dashboard Cite

CO 2 is a major product from pyrolysis of biomass, and it is also used for activation of biomass. The capability of CO 2 for creating pores highly depends on the origin of feedstock. Herein, a potentially distinct response of varied feedstocks toward the CO 2 atmosphere was investigated by pyrolysis of rice, spinach, pig manure, spirulina, or poplar sawdust in CO 2 at 800 °C. The high ash content in pig manure and spinach promoted cracking/gasification, producing more gases while less bio-oil/biochar than counterparts. This also resulted in a low degree of aromatization as the O-containing species and aliphatic structures like −C− 6rch structures formed densified biochar of smooth surface but chemically inert to CO 2 for generating pores. Aromatization of organics in spirulina did not proceed to a degree as high as that in rice or sawdust, retaining more oxygen. However, pore blocking from molten intermediates diminished the pores (104.4 m 2 g −1 ). Sawdust-char showed the most developed porous structures (472.1 m 2 g −1 ) with mainly micropores. Degradation of cellulose/hemicellulose and lignin together in sawdust created defective structure intermediates bearing phenolic −OH and carbonyls that were reactive with CO 2 to generate more pores (472.1 m 2 g −1 ).

show abstract

Section: Resultsmentioning

confidence: 98%

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂

Zhong,

Li,

Wang

et al. 2024

ACS Sustainable Resour. Manage.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Drying results in concentrating the nutrients in the solid phase; thus, the biochar may have a higher nutrient content than the biochar produced from solid–liquid separation. Co‐pyrolysis/addition of dry plant biomass: Dry matter content of the pyrolysis feedstock can be increased by adding dryer and more energy dense biomass, for example, co‐pyrolysis of manure with wood chips or rice straw. This approach may reduce or avoid the need for separate drying, increase overall biochar yield, reduce the content of both nutrients and PTEs, and modify biochar properties, depending on the biomass added (Li et al, 2021; Meng et al, 2018; Qiu et al, 2023). Ro et al (2010) also reported that biochar could be produced without any external energy by mixing dewatered swine solids with rye grass.…”

Section: Biochar Production From Animal Manurementioning

confidence: 99%

“…Three different approaches to integrate manure in a pyrolysis system (Cantrell et al, 2012; Li et al, 2021; Meng et al, 2022; Ro et al, 2010): (1) Solid–liquid separation—the separated solid phase of manure is pyrolyzed directly while the concentrated nutrient‐rich liquid phase can be used to manufacture a biochar‐based fertilizer and/or the liquid can be used separately for irrigation purposes. (2) Drying: The excess heat generated during the pyrolysis is used to dry manure prior to pyrolysis without prior phase separation.…”

Section: Biochar Production From Animal Manurementioning

confidence: 99%

“…Biochar's PTE content is increased compared to its feedstock due to mass loss during pyrolysis and the high boiling points of PTEs (Table 3). Elements including Hg, Pb, Cd can be volatilized at high temperatures (Li et al, 2021), whereas 75%–90% of thermally stable PTEs such as Ni, Cr, and Mn were concentrated in the solid phase (Meng et al, 2017) As a result, a decrease in total elemental Pb/Ni ratio was observed in several studies (Bai et al, 2020; Cantrell et al, 2012; Liang et al, 2018). Apart from the production temperature, the PTE composition in feedstock and the type of the pyrolysis unit (e.g., lab vs. pilot scale) also had an impact on the volatilization and retention probabilities of PTEs.…”

Section: Biochar Production From Animal Manurementioning

confidence: 99%

See 1 more Smart Citation

Biochar from animal manure: A critical assessment on technical feasibility, economic viability, and ecological impact

Rathnayake

Schmidt²,

Leifeld

et al. 2023

GCB Bioenergy

View full text Add to dashboard Cite

Animal manure has been used to manage soil fertility since the dawn of agriculture. It provides plant nutrients and improves soil fertility. In the last decades, animal husbandry has been significantly expanded globally. Its economics were optimized via the (international) trade of feed, resulting in a surplus of animal manure in areas with intensive livestock farming. Potentially toxic elements (PTEs), pathogenic microorganisms, antibiotic residues, biocides, and other micropollutants in manure threaten animal, human, and environmental health. Hence, manure application in crop fields is increasingly restricted, especially in hotspot regions with intensive livestock activities. Furthermore, ammonia volatilization and greenhouse gas (GHG) emissions during manure storage, field application, and decomposition contribute to air pollution and climate change. Conventional manure management scenarios such as composting and anaerobic digestion partially improve the system but cannot guarantee to eliminate sanitary and contamination risks and only marginally reducing its climate burden. Hence, this review discusses the potential of pyrolysis, the thermochemical conversion under oxygen‐limited conditions as an alternative treatment for animal manure providing energy and biochar. Manure pyrolysis reduces the bioavailability of PTEs, eliminates pathogenic microorganisms and organic micropollutants, and reduces GHG emissions. Pyrolysis also results in the loss of nitrogen, which can be minimized by pretreatment, that is, after removing soluble nitrogen fraction of manure, for example, by digestion and stripping of ammonia–nitrogen or liquid–solid separation. However, conclusions on the effect of manure pyrolysis on crop yield and fertilization efficiencies are hampered by a lack of nutrient mass balances based on livestock unit equivalent comparisons of manure and manure biochar applications. Hence, it is essential to design and conduct experiments in more practically relevant scenarios and depict the observations based on the amount of manure used to produce a certain amount of biochar.

show abstract

“…H2 was formed by dehydrogenation, however, it could have formed as a result of the reforming reactions. CO may be related to the reactions that facilitated the cleavage of bonds in the ether groups and decarbonylation from proteins [15]- [16].…”

Section: Composition Of the Gaseous Productsmentioning

confidence: 99%

Investigation of the Pyrolysis of Animal Manure in a Laboratory-Scale Tubular Reactor: The Effect of the Process Temperature and Residence Time

Fernandez¹,

Tomasek²,

Fáyköd³

et al. 2022

Hung. J. Ind. Chem.

View full text Add to dashboard Cite

This paper focuses on the pyrolysis of animal manure in a laboratory-scale tubular reactor between 300 and 900°C at nitrogen flow rates of 1 and 5 dm3/h. During the experiments, it was found that both the temperature and nitrogen flow rate had significant effects on the product yields and compositions. The highest gas yield and syngas content were observed at 900°C at a nitrogen flow rate of 1 dm3/h. In this case, since the gaseous product was characterized by a H2/CO ratio of 0:5, its quality must be improved prior to being used for synthesis. The composition of the solid residue was also affected by the pyrolysis parameters. Based on the hydrogen/carbon and oxygen/carbon ratios, it was concluded that both the water-gas shift and Boudouard reactions were the most critical.

show abstract

Co-pyrolysis of swine manure and pinewood sawdust: Evidence of cross-interaction of the volatiles and profound impacts on product characteristics

Cited by 17 publications

References 45 publications

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂

Biochar from animal manure: A critical assessment on technical feasibility, economic viability, and ecological impact

Investigation of the Pyrolysis of Animal Manure in a Laboratory-Scale Tubular Reactor: The Effect of the Process Temperature and Residence Time

Contact Info

Product

Resources

About

Co-pyrolysis of swine manure and pinewood sawdust: Evidence of cross-interaction of the volatiles and profound impacts on product characteristics

Cited by 17 publications

References 45 publications

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO2

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO2

Biochar from animal manure: A critical assessment on technical feasibility, economic viability, and ecological impact

Investigation of the Pyrolysis of Animal Manure in a Laboratory-Scale Tubular Reactor: The Effect of the Process Temperature and Residence Time

Contact Info

Product

Resources

About

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂

Varied Pyrolysis Behaviors of Typical Forestry, Kitchen, and Manure Wastes in CO₂