Biogas treatment by ashes from incineration processes

Chavez, Rosa-Hilda; Guadarrama, Javier de J.

doi:10.1007/s10098-015-0980-3

Cited by 8 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results from this study show that Ca rich wood ashes have very good CO 2 uptake capacity, which is in accordance with the findings of Chavez & Guadarrama (2015). The uptake was slightly higher in the WPA compared to WCA, which can be explained by its higher content of free CaO.…”

Section: Discussionsupporting

confidence: 81%

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Andersson¹,

Nordberg²

2017

EER

View full text Add to dashboard Cite

The value of biogas produced at small scale facilities, such as farm scale biogas plants, can increase by upgrading it to vehicle fuel quality. However, commercial upgrading technologies available today are very costly for small scale applications. Ash from combustion of wood fuels has a high content of Ca, which indicates favourable conditions for a high CO 2 uptake capacity from biogas. The objective of this study was to assess the CO 2 uptake capacity of ash from combusted wood pellets and wood chips in a laboratory scale solid bed reactor using an inlet gas mixture of CO 2 and CH 4 with the aim to reach > 97 % CH 4 in the outlet gas. A gas with a defined composition of 65 % CH 4 and 35 % CO 2 was passed through a moisturised solid ash bed in an up-flow manner. The gas quality in the outlet gas and the CO 2 uptake capacity of the ash was assessed. Bottom ash from combusted wood pellets showed the best uptake capacity of 0.20 g CO 2 /g dry ash, which is 4-8 higher than studies where municipal solid waste incineration bottom ash was tested. The outlet gas from t he ash reactor contained high concentrations of methane (up to 99.6 %) and the gas contained no CO 2 until CO 2 breakthrough occurred in the ash bed. Furthermore, the pH of the ash was reduced by 2 to 3 units due to the carbonation, which improves the prerequisites for recycling the ash to forestry. It was concluded that an ash bed with Ca rich wood ash has the ability to reach vehicle fuel quality regarding CH 4 concentration. Based on the results, a biogas plant of 1 GWh (3.6 TJ) per year would require approx. 650 tonnes of dry wood ash a year with an uptake of 0.20 g CO 2 /g dry ash and an inlet biogas composition of 60 % CH 4 and 40 % CO 2 .

show abstract

Section: Discussionsupporting

confidence: 81%

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Andersson¹,

Nordberg²

2017

EER

View full text Add to dashboard Cite

show abstract

“…Among the ash from the incineration processes of coupled kilns, conventional kilns, and wood ash, the most suitable ash for biogas upgrading is wood ash [46]. Ash obtained after the incineration of wood and municipal solid waste consists of small particles (d50 < 0.2 mm) and is characterized by a higher porosity than other ashes [46,47]. Wood ash is characterized by a high CaO content (24-46%) [11].…”

Section: Ashesmentioning

confidence: 99%

Removal of CO2 from Biogas during Mineral Carbonation with Waste Materials

Rusanowska

Zieliński

Dębowski

2023

IJERPH

View full text Add to dashboard Cite

Biogas represents a source of renewable energy that could provide a replacement for fossil fuels to meet the increasing demand for energy. The upgrading of biogas through the removal of CO2 to a content of 95–97% of CH4 is necessary to increase its calorific value. This review focuses on biogas upgrading technologies using wastes or residues that enable the performing of mineral carbonation. In this research, we analyzed a natural biogas or synthetic one with a content of about (40–50%) of carbon dioxide. The chemical absorption is also briefly described in this study, due to its being the first step in innovative absorption and regeneration processes using mineral carbonization. Wastes with high calcium contents, i.e., ashes, steel-making slags, and stabilized wastewater anaerobic sludge, were considered for direct carbonization, taking into account the leaching of particles from carbonated wastes/residues. Moreover, the different types of reactors used for mineral carbonation have been described. The presented technological solutions are easy to use and economical, and some of them also take into account the regeneration of reagents. However, in the context of their direct use in biogas plants, it is necessary to consider the availability of wastes and residues.

show abstract

“…. Currently, using biomass ash slurry for CO 2 sequestration is more feasible to commercialization than using other renewable absorbents, and a few pilot scale CO 2 separation plants have been established . One reason could be the low cost of biomass ash.…”

Section: Inorganic Renewable Absorbentsmentioning

confidence: 99%

“…Research on the application of biomass ash from wood or crop residue combustion for biogas upgrading is still rare . The characteristics of fly or/and bottom ashes generated from different incineration processes, such as coupled kilns, conventional kilns, wood, and Petacalco power plant were investigated by Chavez and Guadarrama . The results indicated that wood ash is the most appropriate feedstock for CO 2 sequestration due to its high Ca content …”

Section: Introductionmentioning

confidence: 99%

Renewable absorbents for CO₂ capture: from biomass to nature

Shi

Liang

et al. 2019

Greenhouse Gases

View full text Add to dashboard Cite

The chemical absorption process for carbon dioxide (CO2) capture is a promising method to reduce greenhouse gas emissions in the energy industry. Worldwide applications of the CO2 chemical absorption process will consume plenty of chemical absorbents and have hazardous impacts on the environment. The development of renewable absorbents from biomass can not only fill the gap of absorbent production, but also provide a novel green approach to recycle the used absorbents into nature without additional pollution. In this review, we summarized several renewable absorbents available from biomass such as biomass ash slurries, alkanolamines, aqueous ammonia, and amino acid salts. The preparations, CO2 absorption capacities, advanced treatments, and applications of the renewable absorbents were also reviewed. Moreover, the advantages and challenges in the preparation of the renewable absorbents were discussed, as well as their CO2 absorption performance improvement. Finally, future research avenues into degradation and utilization of renewable absorbents in nature were suggested. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Biogas treatment by ashes from incineration processes

Cited by 8 publications

References 18 publications

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Removal of CO2 from Biogas during Mineral Carbonation with Waste Materials

Renewable absorbents for CO₂ capture: from biomass to nature

Contact Info

Product

Resources

About

Biogas treatment by ashes from incineration processes

Cited by 8 publications

References 18 publications

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Biogas Upgrading Using Ash from Combustion of Wood Fuels: Laboratory Experiments

Removal of CO2 from Biogas during Mineral Carbonation with Waste Materials

Renewable absorbents for CO2 capture: from biomass to nature

Contact Info

Product

Resources

About

Renewable absorbents for CO₂ capture: from biomass to nature