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CONVERSION OF WASTE MATERIALS TO ACTIVATED CARBON ADSORBENTS FOR BIOGAS PURIFICATION
Title
CONVERSION OF WASTE MATERIALS TO ACTIVATED CARBON ADSORBENTS FOR BIOGAS PURIFICATION.
Creator
Guirard, Mitchell, Lashaki, Masoud Jahandar, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description
The potential of plastic waste-derived activated carbon was investigated for the removal of carbon dioxide and hydrogen sulfide from biogas. Activated carbon materials were prepared by carbonizing plastic waste followed by activation via microwave heating after mixing with potassium hydroxide. Samples were tested using thermogravimetric analysis to determine the equilibrium uptake of carbon dioxide. Samples were modified with tetraethylenepentamine and diethanolamine however, sample texture...
Show moreThe potential of plastic waste-derived activated carbon was investigated for the removal of carbon dioxide and hydrogen sulfide from biogas. Activated carbon materials were prepared by carbonizing plastic waste followed by activation via microwave heating after mixing with potassium hydroxide. Samples were tested using thermogravimetric analysis to determine the equilibrium uptake of carbon dioxide. Samples were modified with tetraethylenepentamine and diethanolamine however, sample texture produced was deemed unusable for further testing due to operational concerns. Adsorbent screening was conducted in conditions mimicking that of biogas at a temperature of 40 °C and 30% carbon dioxide in nitrogen. Performant samples were identified as those achieving uptakes greater than 3 wt.%. The best performing sample achieved an uptake of 3.57 wt.% and maintained 99% of its uptake during cycling. Column breakthrough experiments demonstrated that the final candidate achieved complete removal of both carbon dioxide and hydrogen sulfide, suggesting viability for larger scale biogas purification.
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Date Issued
2022
PURL
http://purl.flvc.org/fau/fd/FA00014093
Subject Headings
Biogas--Purification, Carbon, Activated, Thermogravimetry
Format
Document (PDF)
WASTE DERIVED ACTIVATED CARBON MATERIALS FOR LANDFILL GAS PURIFICATION
Title
WASTE DERIVED ACTIVATED CARBON MATERIALS FOR LANDFILL GAS PURIFICATION.
Creator
Thomas, Ryan, Lashaki, Masoud Jahandar, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description
The potential of paper waste-derived activated carbon was investigated for the removal of carbon dioxide and hydrogen sulfide from landfill gas. Activated carbon materials were prepared by carbonizing paper waste followed by acid treatment to remove ash, mixing with aqueous phase potassium hydroxide, and activation via microwave heating. Activated samples were tested using thermogravimetric analysis to determine their equilibrium uptake of carbon dioxide. The adsorbent materials were modified...
Show moreThe potential of paper waste-derived activated carbon was investigated for the removal of carbon dioxide and hydrogen sulfide from landfill gas. Activated carbon materials were prepared by carbonizing paper waste followed by acid treatment to remove ash, mixing with aqueous phase potassium hydroxide, and activation via microwave heating. Activated samples were tested using thermogravimetric analysis to determine their equilibrium uptake of carbon dioxide. The adsorbent materials were modified with both tetraethylenepentamine and diethanolamine to potentially increase the carbon dioxide uptake, however, all the modified samples had a performance significantly worse than their unmodified counterparts. Adsorbent screening was conducted in conditions mimicking that of landfill gas, namely temperature of 40 °C and 40% carbon dioxide in nitrogen. Performant samples were identified as those achieving uptakes greater than 3 wt.%. The best performing sample achieved an uptake of 5.03 wt.% and maintained 97% of its uptake during 100 successive adsorption-desorption cycles. Column-breakthrough experiments demonstrated that the final candidate achieved complete removal of both carbon dioxide and hydrogen sulfide, suggesting viability for larger scale landfill gas purification.
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Date Issued
2022
PURL
http://purl.flvc.org/fau/fd/FA00014106
Subject Headings
Landfill gases--Purification, Carbon, Activated, Adsorption
Format
Document (PDF)
Demonstrations and laboratory exercises in aquaculture. II. Activated carbon and ion-exchange in chemical filtration
Title
Demonstrations and laboratory exercises in aquaculture. II. Activated carbon and ion-exchange in chemical filtration.
Creator
Landau, Matthew P., Scarpa, John
Date Issued
2001
PURL
http://purl.flvc.org/FCLA/DT/3352967
Subject Headings
Aquaculture, Carbon, Activated, Ion exchange, Filters and filtration, Demonstrations
Format
Document (PDF)
AQUEOUS ARSENIC REMOVAL USING NOVEL CARBON ADSORBENTS THAT ARE DERIVED FROM WASTE ALGAE
Title
AQUEOUS ARSENIC REMOVAL USING NOVEL CARBON ADSORBENTS THAT ARE DERIVED FROM WASTE ALGAE.
Creator
Rawal, Rishabh, Meeroff, Dan, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description
Human exposure to arsenic from natural as well as anthropogenic sources can lead to a detrimental impact to the nervous system, cardiovascular system and can also cause cancer. Historical agricultural runoff has led to an accumulation of arsenic in groundwater and soils around Lake Okeechobee and many golf courses in Florida. This research involved studying the removal of aqueous arsenic via adsorption using activated carbon derived from algae. Carbon derived from Sargassum removed 41.47% of...
Show moreHuman exposure to arsenic from natural as well as anthropogenic sources can lead to a detrimental impact to the nervous system, cardiovascular system and can also cause cancer. Historical agricultural runoff has led to an accumulation of arsenic in groundwater and soils around Lake Okeechobee and many golf courses in Florida. This research involved studying the removal of aqueous arsenic via adsorption using activated carbon derived from algae. Carbon derived from Sargassum removed 41.47% of arsenic after a contact time of 2 hours. Adsorbents created from blue-green algae showed essentially no arsenic removal under the same conditions. Various chemical additives were tested to improve arsenic adsorption as well. Modification of the adsorbent surface with magnesium chloride demonstrated an arsenic removal efficiency of 98.6% when added to commercial activated carbon. However, when magnesium chloride was used to modify the surface of Sargassum-derived carbon adsorbents, the arsenic removal efficiency after 2 hours was 26.7%. It is recommended to investigate other surface modification agents that can potentially improve adsorption of arsenic.
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Date Issued
2022
PURL
http://purl.flvc.org/fau/fd/FA00014036
Subject Headings
Arsenic, Adsorption, Algae, Carbon, Activated, Groundwater--Purification--Arsenic removal
Format
Document (PDF)