Thermogravimetric characterization of dairy manure as pyrolysis and combustion feedstocks

Wu, Hanjing; Hanna, Milford A.; Jones, David D.

doi:10.1177/0734242x12452906

Cited by 43 publications

(15 citation statements)

References 28 publications

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“…Therefore, its calorific value was up to 18.4 MJ/kg-dry. The data in Table 1 were very close to those in the previous studies [25,26] and other reports [27][28][29]. On the other hand, the contents of inorganic elements in the biochar precursor (i.e., DM) will be important for various reasons, including soil fertility and contamination when reusing it (or resulting biochar) as an organic fertilizer, and slagging and fouling as it was burned in boilers.…”

Section: Thermochemical Characterization Of Dairy Manure (Dm)supporting

confidence: 86%

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

2019

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In this work, the thermochemical analyses of dairy manure (DM), including the proximate analysis, ultimate (elemental) analysis, calorific value, thermogravimetric analysis (TGA), and inorganic elements, were studied to evaluate its potential for producing DM-based char (DMC) with high porosity. The results showed that the biomass should be an available precursor for producing biochar materials based on its high contents of carbon (42.63%) and volatile matter (79.55%). In order to characterize their pore properties, the DMC products produced at high pyrolysis temperatures (500–900°C) were analyzed using surface area and porosity analyzer, pycnometer, and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). The values of pore properties for the DMC products increased with an increase in pyrolysis temperature, leading to more pore development and condensed aromatic cluster at elevated temperatures. Because of the microporous and mesoporous structures from the N2 adsorption–desorption isotherms with the hysteresis loops (H4 type), the Brunauer–Emmett–Teller (BET) surface area of the optimal biochar (DMC-900) was about 360 m2/g, which was higher than the data reported in the literature. The highly porous structure was also seen from the SEM observations. More significantly, the cation exchange capacity (CEC) of the optimal DMC product showed a high value of 57.5 ± 16.1 cmol/kg. Based on the excellent pore and chemical properties, the DMC product could be used as an effective amendment and/or adsorbent for the removal of pollutants from the soil media and/or fluid streams.

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Section: Thermochemical Characterization Of Dairy Manure (Dm)supporting

confidence: 86%

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

2019

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“…The extractives cannot be ignored when considering the thermal decomposition characteristics of cattle manure. Moreover, it has an approximate decomposition range with hemicellulose, due to the approximate molecular weight and molecular complexity [12,34]. In this fashion, the decomposition peak A was caused by the extractive pseudo-component and the hemicellulose pseudo-component together.…”

Section: Thermal Decomposition Characteristicsmentioning

confidence: 98%

Kinetic analysis of cattle manure pyrolysis process with a novel two‐step method: Pseudo‐component model coupled with multipeak gaussian fitting

Xin

Cao

Yuan

et al. 2017

Env Prog and Sustain Energy

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A novel two‐step method is proposed to conduct the pseudo‐component model for cattle manure pyrolysis process. The weight coefficient of pseudo‐components firstly are identified accurately by Gaussian multipeak fitting method based on the DTG data of cattle manure, and then the kinetic parameters for each pseudo‐component including reaction order, activation energies (Ei) and pre‐exponential factor (Ai), are obtained by the reaction‐order mechanism function and Coats‐Redfern method. The results showed that the decomposition process of cattle manure should be characterized by five pseudo‐components (extractives, hemicellulose, cellulose, lignin, and volatilizable carbonaceous materials). The corresponding reaction orders were 1.6, 1.8, 1.9, 1.3, and 1.8, respectively. The Ei were ranged from 42.54 to 527.02 kJ mol−1 for five pseudo‐components. The pseudo‐component model coupled with multipeak Gaussian fitting could describe the kinetic process of cattle manure decomposition very well, and provide useful data for the design of a thermal decomposition processing system and the kinetic analysis of pyrolysis process of other solid wastes. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1618–1625, 2018

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“…A very descriptive report showing several fuel properties of dairy manure, options for thermochemical processing and experiences at pilot scale has been prepared by [104]. Some properties of dairy manure of interest for combustion and pyrolysis (particularly carbonization) have been investigated by [118]. Cantrell et al [119] showed how thermogravimetric analysis can be employed for proximate analysis of livestock wastes (e.g., dairy manure).…”

Section: Combustion For Heat Productionmentioning

confidence: 99%

Approaches for adding value to anaerobically digested dairy fiber

Peláez-Samaniego

Hummel

Liao

et al. 2017

Renewable and Sustainable Energy Reviews

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One of the consequences of the increase of large dairy concentrated feeding operations (CAFOs) is the abundance of dairy manure that needs to be disposed of or used in some way. CAFOs can become bio-refineries, harnessing the manure for heat, power, fuel, chemicals, fertilizers, fiber, wood composites, and biochar for production of multiple value-added co-products. The objective of this paper is to review options for using dairy manure fiber and its corresponding anaerobically digested (AD) fiber. Bedding for cows remains a common choice for employing the separated AD fiber. However, research has shown that AD fiber has potential for using it as a component of growth substrates used in container plant production systems, for producing composite materials, or as a feedstock for both chemical and thermochemical operations. Potential uses of AD fiber such as composite materials and liquid fuels are proposed based on experiences employing the manure and its fiber (both without a previous AD step and after AD). Thermochemical processing (e.g., liquefaction and pyrolysis) of AD fiber for fuels and chemicals has been conducted at laboratory level and still needs further study at larger scale. Gasification of AD fiber is a promising option since there is potential for integration of current methane production with methane produced from thermal gasification.

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Thermogravimetric characterization of dairy manure as pyrolysis and combustion feedstocks

Cited by 43 publications

References 28 publications

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

Characterization of Biochars Produced from Dairy Manure at High Pyrolysis Temperatures

Kinetic analysis of cattle manure pyrolysis process with a novel two‐step method: Pseudo‐component model coupled with multipeak gaussian fitting

Approaches for adding value to anaerobically digested dairy fiber

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