Production and characterization of H2S and PO43− carbonaceous adsorbents from anaerobic digested fibers

Ayiania, Michael; Gamarra, Félix Martin Carbajal; Garcia-Perez, Tsai; Frear, Craig; Suliman, Waled; Garcı̀a-Pèrez, Manuel

doi:10.1016/j.biombioe.2018.11.028

Cited by 29 publications

(22 citation statements)

References 55 publications

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“…Shang et al also stated that FTIR peaks at 3420 and 1730 cm −1 , which correlated to OH stretching and COO − stretching respectively, were crucial for H 2 S adsorption [48]. Ayiania et al studied that the mechanism of H 2 S sorption is driven by the size of biochar pores [49]. However, our experiments showed that HAP biochar with pH = 9.2 and larger pores [34] performed less H 2 S reduction in comparison with RO over all three trials.…”

Section: Effect Of Biochar Treatment On Ammonia and Hydrogen Sulfidementioning

confidence: 99%

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

et al. 2020

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Environmental impact associated with odor and gaseous emissions from animal manure is one of the challenges for communities, farmers, and regulatory agencies. Microbe-based manure additives treatments are marketed and used by farmers for mitigation of emissions. However, their performance is difficult to assess objectively. Thus, comprehensive, practical, and low-cost treatments are still in demand. We have been advancing such treatments based on physicochemical principles. The objective of this research was to test the effect of the surficial application of a thin layer (¼ inches; 6.3 mm) of biochar on the mitigation of gaseous emissions (as the percent reduction, % R) from swine manure. Two types of biochar were tested: highly alkaline and porous (HAP) biochar made from corn stover and red oak (RO), both with different pH and morphology. Three 30-day trials were conducted with a layer of HAP and RO (2.0 & 1.65 kg∙m−2, respectively) applied on manure surface, and emissions of ammonia (NH3), hydrogen sulfide (H2S), greenhouse gases (GHG), and odorous volatile organic compounds (VOCs) were measured. The manure and biochar type and properties had an impact on the mitigation effect and its duration. RO significantly reduced NH3 (19–39%) and p-cresol (66–78%). H2S was mitigated (16~23%), but not significantly for all trials. The phenolic VOCs had relatively high % R in most trials but not significantly for all trials. HAP reduced NH3 (4~21%) and H2S (2~22%), but not significantly for all trials. Significant % R for p-cresol (91~97%) and skatole (74~95%) were observed for all trials. The % R for phenol and indole ranged from (60~99%) and (29~94%) but was not significant for all trials. The impact on GHGs, isobutyric acid, and the odor was mixed with some mitigation and generation effects. However, larger-scale experiments are needed to understand how biochar properties and the dose and frequency of application can be optimized to mitigate odor and gaseous emissions from swine manure. The lessons learned can also be applicable to surficial biochar treatment of gaseous emissions from other waste and area sources.

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Section: Effect Of Biochar Treatment On Ammonia and Hydrogen Sulfidementioning

confidence: 99%

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

et al. 2020

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“…Elemental analysis was performed using a TRUSPEC-CHN® elemental analyzer (LECO, U.S.) [40]. Briefly, 0.15 g of sample was used to determine total carbon (C), nitrogen (N) and hydrogen (H) contents.…”

Section: Elemental Analysismentioning

confidence: 99%

Microstructural analysis of nitrogen-doped char by Raman spectroscopy: Raman shift analysis from first principles

Ayiania

Weiss-Hortala

Smith

et al. 2020

Carbon

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Nitrogen-doped materials are known to possess unique functional properties, making these materials potentially useful for environmental applications, heterogeneous catalysis, and electronics. In this paper we constructed first principles-based models of various polyaromatic structures containing N functionalities to better understand the effect of these functional groups on char Raman spectra. The presence of N functional groups induces active vibrations in the regions between 1400 and 1550 cm À1 and 1605-1650 cm À1 . We used these insights to inform the deconvolution of N-doped cellulose char produced between 350 and 700 C using cellulose/melamine blends 2:1. A consistent increase in the intensity of the D and G bands is observed with temperature, which is related to an increase in size of the aromatic cluster. A consistent decrease in the A (the valley region) band is related to the loss of heteroatoms (mainly N and O) as the carbonization temperature increases from 350 to 700 C. Although the modeling results reported in this manuscript are used to inform the deconvolution of N-doped char Raman spectra, they are also relevant to study other nanocarbon-based materials.

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“…Shang also stated that FTIR peaks at 3420, and 1730 cm -1, which correlated to OH stretching and COOstretching respectively, were crucial for H2S adsorption [48]. Ayiania et al studied that the mechanism of H2S sorption is driven by the size of biochar pores [49]. However, our experiments showed that HAP biochar with pH=9.2 and larger pores [34] performed less H2S reduction in comparison with RO over all three trials.…”

Section: Effect Of Biochar Treatment On Ammonia and Hydrogen Sulfidementioning

confidence: 56%

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

Meiirkhanuly¹,

Kozieł²,

Chen³

et al. 2020

Preprint

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Environmental impact associated with odor and gaseous emissions from animal manure is one of the challenges for communities, farmers, and regulatory agencies. Microbe-based manure additives treatments are marketed and used by farmers for mitigation of emissions. However, their performance is difficult to assess objectively. Thus, comprehensive, practical, and low-cost treatments are still in demand. We have been advancing such treatments based on physicochemical principles. The objective of this research was to test the effect of the surficial application of a thin layer (¼"; 6.3 mm) of biochar on the mitigation of gaseous emissions (as the percent reduction, % R) from swine manure. Two types of biochar were tested: highly alkaline and porous (HAP) biochar made from corn stover and red oak (RO), both with different pH and morphology. Three 30-day trials were conducted with a layer of HAP and RO (2.0 & 1.65 kg∙m-2, respectively) applied on manure surface, and emissions of ammonia (NH3), hydrogen sulfide (H2S), greenhouse gases (GHG), and odorous volatile organic compounds (VOCs) were measured. The manure and biochar type and properties had an impact on the mitigation effect and its duration. RO significantly reduced NH3 (19-39%) and p-cresol (66-78%). H2S was mitigated (16~23%), but not significantly for all trials. Significant (66~78%) reductions for p-cresol were observed for all trials. The phenolic VOCs had relatively high % R in most trials but not significantly for all trials. HAP reduced NH3 (4~21%) and H2S (2~22%), but not significantly for all trials. Significant % R for p-cresol (91~97%) and skatole (74~95%) were observed for all trials. The % R for phenol and indole ranged from (60~99%) & (29~94%) but was not significant for all trials. The impact on GHGs, isobutyric acid, and the odor was mixed with some mitigation and generation effects. However, larger-scale experiments are needed to understand how biochar properties and the dose and frequency of application can be optimized to mitigate odor and gaseous emissions from swine manure. The lessons learned can also be applicable to surficial biochar treatment of gaseous emissions from other waste and area sources.

show abstract

Production and characterization of H2S and PO43− carbonaceous adsorbents from anaerobic digested fibers

Cited by 29 publications

References 55 publications

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

Microstructural analysis of nitrogen-doped char by Raman spectroscopy: Raman shift analysis from first principles

Mitigation of Gaseous Emissions from Swine Manure with the Surficial Application of Biochars

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