Study on an alternative approach for the preparation of wood vinegar from the hydrothermolysis process of cotton stalk

Wang, Caiwei; Zhang, Shouyu; Wu, Shunyan; Cao, Zhongyao; Zhang, Yifan; Li, Hao; Jiang, Fenghao; Lyu, Junfu

doi:10.1016/j.biortech.2018.01.088

Cited by 29 publications

(9 citation statements)

References 37 publications

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“…As shown, phenols were the most abundant chemical compounds in WVs, which could be classified into the guaiacol type, including 2-methoxy-4-methyl phenol, 2-methoxy-4-ethyl phenol, 2-methoxy phenol, and 2-methoxy-4-propenyl phenol. This indicated that the major units of lignin in CF were the guaiacol type . It can be seen that HTT and HTT-A had the obvious effects on the phenol formation.…”

Section: Resultsmentioning

confidence: 86%

Synergy of Hydrothermal and Organic Acid Washing Treatments in Chinese Fir Wood Vinegar Preparation

Jiang

et al. 2020

ACS Omega

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Pretreatment is an effective method to change the pyrolysis behavior and improve the product properties of biomass. In this study, the effects of hydrothermal treatment (HTT) and hydrothermal treatment combined with organic acid washing (HTT-A) on Chinese fir waste (CF) pyrolysis and preparation of wood vinegar (WV) were investigated. The results indicated that HTT promoted the decomposition of hemicellulose and disrupted the chemical structure, while HTT-A partly removed the lignin as well as hemicellulose. HTT-A showed a more effective removal efficiency of alkali/alkaline earth metals (AAEMs) than HTT. Both HTT and HTT-A delayed the initial decomposition temperature but promoted the pyrolysis process. The yields of WVs increased after HTT and HTT-A, while the moisture contents reduced, obviously. HTT increased the relative contents of phenols from 47.04 to 59.85% but reduced the relative contents of acids from 24.31 to 18.38%, whereas HHT-A reduced the relative contents of phenols but increased those of aldehydes. In addition, HTT and HTT-A showed the different effects on chemical compositions of WVs, especially for phenolic and acid compounds. This study indicated that HTT and HTT-A were the efficient methods to produce WVs with target chemical components, which would be conducive to the efficient application of WVs.

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Section: Resultsmentioning

confidence: 86%

Synergy of Hydrothermal and Organic Acid Washing Treatments in Chinese Fir Wood Vinegar Preparation

Jiang

et al. 2020

ACS Omega

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“…From these processes, large amounts of HAc aqueous solution, typically at the concentration of 10–30 wt %, are produced. In addition, wood vinegar produced in biomass pyrolysis or hydrothermal liquefaction processes can be regarded as a dilute HAc aqueous solution, which contains about 85 wt % of water, small amounts of ketones, phenols, and other organic substances, and up to 10 wt % of HAc 5–9. If these streams are directly discharged without HAc recovery, they will not only cause damage to the environment, but may adversely affect the economic viability of these processes.…”

Section: Introductionmentioning

confidence: 99%

Dehydration of a Dilute Acetic Acid‐Water Mixture via Batch Heteroazeotropic Distillation

et al. 2021

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Dehydration via batch heteroazeotropic distillation emerges as a promising technology for the recovery of acetic acid (HAc) from dilute aqueous solutions. In this preliminary work, this process was studied with the aid of Aspen Batch Modeler®, using an acetic acid aqueous solution as the model feed instead of wood vinegar from biorefineries and n‐butyl acetate as the azeotropic entrainer. The non‐random two liquids (NRTL)‐virial Hayden‐O'Connell model (HOC) model was chosen to calculate the thermodynamic properties. The response surface methodology with Box‐Behnken design was successfully applied to obtain optimum process conditions, providing a dehydrated HAc product from the pot with high purity and recovery.

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“…Wood vinegar is prepared by condensation of biogas produced by anoxic pyrolysis of wood biomass [ 15 ]. Wood vinegar is a dark brown liquid with acidic pH [ 16 ], and the composition is complex and contains many compounds such as guaiacol, acetic acid, and eugenol [ 17 ]. As wood vinegar contains a variety of organic acids, wood vinegar could be used to improve soil pH [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Amelioration of Coastal Salt-Affected Soils with Biochar, Acid Modified Biochar and Wood Vinegar: Enhanced Nutrient Availability and Bacterial Community Modulation

Wang

Pan

Kuang

et al. 2022

IJERPH

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As an important part of the ecological environment, degraded coastal soils urgently require efficient and eco-friendly soil amendment. Biochar and wood vinegar have been proved to be effective soil amendments, and acid-modified biochar has great potential in ameliorating the degraded coastal saline–alkali soil. However, the effects of individual or combined application of biochar (BC), acid-modified biochar (ABC), and wood vinegar (WV) on coastal saline–alkali soil are unknown. Hence, biochar, wood vinegar, and acid-modified biochar were prepared by pyrolysis of poplar wood. The properties of biochar were characterized, and soil incubation experiments were conducted. The results showed that ABC decreased the soil alkalinity by acid-base neutralization and improved the soil fertility by increasing the nutrients (C, N, P). ABC provided a more suitable environment and changed the abundance and diversity of soil microorganisms. ABC increased the relative contents of specific families (e.g., Pseudomonadaceae and Sphingomonadaceae), which had strong ecological linkages in the C, N, and P cycles and organic matter degradation. The results indicated that WV had little effect on coastal saline–alkali soil, whereas individual and combined application of biochar (especially ABC) showed an efficient remediation effect. Our preliminary study demonstrated that the ABC could be a suitable solution for ameliorating degraded coastal saline–alkali soils.

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Study on an alternative approach for the preparation of wood vinegar from the hydrothermolysis process of cotton stalk

Cited by 29 publications

References 37 publications

Synergy of Hydrothermal and Organic Acid Washing Treatments in Chinese Fir Wood Vinegar Preparation

Synergy of Hydrothermal and Organic Acid Washing Treatments in Chinese Fir Wood Vinegar Preparation

Dehydration of a Dilute Acetic Acid‐Water Mixture via Batch Heteroazeotropic Distillation

Amelioration of Coastal Salt-Affected Soils with Biochar, Acid Modified Biochar and Wood Vinegar: Enhanced Nutrient Availability and Bacterial Community Modulation

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