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Effects of marine algal proximate composition on methane yields
Title
Effects of marine algal proximate composition on methane yields.
Creator
Bird, Kimon T., Chynoweth, David P., Jerger, Douglas E., Harbor Branch Oceanographic Institute
Date Issued
1990
PURL
http://purl.flvc.org/FCLA/DT/3333169
Subject Headings
Methane, Biogas, Gracilaria, Sargassum, Biomass
Format
Document (PDF)
Recycling the nutrients in residues from methane digesters of aquatic macrophytes for new biomass production
Title
Recycling the nutrients in residues from methane digesters of aquatic macrophytes for new biomass production.
Creator
Hanisak, M. Dennis, Williams, Lavergne D., Rhyther, J. H.
Date Issued
1980
PURL
http://purl.flvc.org/FCLA/DT/3331811
Subject Headings
Eichhornia crassipes, Water hyacinth, Biomass, Methane, Biogas
Format
Document (PDF)
Methane production from the anaerobic digestion of some marine macrophytes
Title
Methane production from the anaerobic digestion of some marine macrophytes.
Creator
Habig, C., Ryther, John H., Harbor Branch Oceanographic Institute
Date Issued
1983
PURL
http://purl.flvc.org/FCLA/DT/3331836
Subject Headings
Methane, Biogas, Biomass, Marine plants, Digester gas
Format
Document (PDF)
Nitrogen recycling and methane production using Gracilaria tikvahiae: a closed system approach
Title
Nitrogen recycling and methane production using Gracilaria tikvahiae: a closed system approach.
Creator
Habig, C., Andrews, D. A., Ryther, John H., Harbor Branch Oceanographic Institute
Date Issued
1984
PURL
http://purl.flvc.org/FCLA/DT/3353747
Subject Headings
Gracilaria, Nitrogen, Methane, Biogas, Biomass, Digester gas
Format
Document (PDF)
Changes in agar and other chemical constituents of the seaweed Gracilaria tikvahiae when used as a substrate in methane digesters
Title
Changes in agar and other chemical constituents of the seaweed Gracilaria tikvahiae when used as a substrate in methane digesters.
Creator
Bird, Kimon T., Hanisak, M. Dennis, Ryther, John H.
Date Issued
1981
PURL
http://purl.flvc.org/FCLA/DT/3331823
Subject Headings
Gracilaria, Methane, Biogas, Energy crops, Biomass energy
Format
Document (PDF)
Some correlations between substrate compositions and biogas yields
Title
Some correlations between substrate compositions and biogas yields.
Creator
Habig, C., Ryther, John H., Harbor Branch Oceanographic Institute
Date Issued
1984
PURL
http://purl.flvc.org/fau/fd/FA00007055
Subject Headings
Biogas, Gracilaria, Ulva, Digester gas, Methane, Thalassia
Format
Document (PDF)
MADE-TO-ORDER AMINE-GRAFTED SILICA MATERIALS FOR SINGLE-STAGE PURIFICATION OF BIOGAS AND LANDFILL GAS
Title
MADE-TO-ORDER AMINE-GRAFTED SILICA MATERIALS FOR SINGLE-STAGE PURIFICATION OF BIOGAS AND LANDFILL GAS.
Creator
Ayub, Ali, Lashaki, Masoud Jahandar, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description
The potential of amine-grafted silica materials (i.e., aminosilicas) was investigated for single-stage biogas and landfill gas purification via simultaneous removal of CO2, H2S, and water vapor. Custom aminosilicas were synthesized by covalent tethering of primary amines onto commercially available mesoporous silica. Screening adsorption experiments were completed at 40°C in the presence of dry 30 vol.% CO2 in N2, and performance was measured using thermogravimetric analysis. Selected...
Show moreThe potential of amine-grafted silica materials (i.e., aminosilicas) was investigated for single-stage biogas and landfill gas purification via simultaneous removal of CO2, H2S, and water vapor. Custom aminosilicas were synthesized by covalent tethering of primary amines onto commercially available mesoporous silica. Screening adsorption experiments were completed at 40°C in the presence of dry 30 vol.% CO2 in N2, and performance was measured using thermogravimetric analysis. Selected materials with equilibrium CO2 uptakes greater than 6 wt.% were chosen for additional assessments in terms of CO2 adsorption kinetics. The highest-performing aminosilica achieved fast CO2 uptake by reaching 82% of its equilibrium CO2 uptake in one minute. This material was subjected to rigorous 100-cycle testing and retained stable performance as evidenced by maintaining 99% of its initial CO2 uptake throughout cycling. The final candidate also underwent multicomponent column-breakthrough tests and achieved complete (100%) removal of all target impurities. The results suggest promising potential of aminosilicas as a viable method of biogas and landfill gas purification.
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Date Issued
2021
PURL
http://purl.flvc.org/fau/fd/FA00013834
Subject Headings
Landfill gases--Purification, Biogas--Purification
Format
Document (PDF)
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)
Biogas Production from Organic Waste, Meat and FOG by Anaerobic Digestion and Ultimate Sludge Digestibility
Title
Biogas Production from Organic Waste, Meat and FOG by Anaerobic Digestion and Ultimate Sludge Digestibility.
Creator
Sethi, Rohan, Meeroff, Daniel E., Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description
The anaerobic biodegradability of food waste (FW), meat waste and FOG (fats, oils and greases) with municipal primary sewage sludge was assessed using a laboratory scale anaerobic digester and by ultimate sludge digestibility, at mesophilic conditions by varying the inoculum to feedstock ratio (1:2-1:10) and solids retention time (SRT). Preliminary analysis assessed the anaerobic digestion of food waste and meat at a biogas production over 30 days at 1000 mL and 1400 mL, respectively. The...
Show moreThe anaerobic biodegradability of food waste (FW), meat waste and FOG (fats, oils and greases) with municipal primary sewage sludge was assessed using a laboratory scale anaerobic digester and by ultimate sludge digestibility, at mesophilic conditions by varying the inoculum to feedstock ratio (1:2-1:10) and solids retention time (SRT). Preliminary analysis assessed the anaerobic digestion of food waste and meat at a biogas production over 30 days at 1000 mL and 1400 mL, respectively. The maximum methane yield was 0.18 m3/kg VS and 0.50 m3/kg VS for 1:10 in meat and FOG, respectively in 28 days with 56-61% volatile solids of destruction and first order methane generation rate of 0.15 d-1 for both meat and FOG. The optimal ratio for meat and FOG was determined to be beyond highest ratio tested (1:10), and longer SRT should be considered to investigate the impact of feedstock on methane yield. Preliminary modeling suggests that for one 1.74 MG digester, diverting just 0.6% of the food waste generated in one-third of Palm Beach County could produce enough methane to power 130-360 homes for one full month.
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Date Issued
2018
PURL
http://purl.flvc.org/fau/fd/FA00013032
Subject Headings
Biogas, Organic wastes, Methane, Food waste, Anaerobic digestion
Format
Document (PDF)
Support for Regional Community Anaerobic Digestion for Organic Waste Diversion
Title
Support for Regional Community Anaerobic Digestion for Organic Waste Diversion.
Creator
Sharmin, Sumaiya, Meeroff, Daniel E., Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
Abstract/Description
As the global population is increasing, the generation of various waste materials (fats, oils and grease, fruit waste etc.) is increasing, which when landfilled, takes up valuable landfill space. Anaerobic digestion techniques have been developed that potentially convert these waste materials into energy and fertilizer, thus reducing landfill demand. It has been hypothesized that addition of high strength organic waste to conventional wastewater sludge can enhance the generation of onsite...
Show moreAs the global population is increasing, the generation of various waste materials (fats, oils and grease, fruit waste etc.) is increasing, which when landfilled, takes up valuable landfill space. Anaerobic digestion techniques have been developed that potentially convert these waste materials into energy and fertilizer, thus reducing landfill demand. It has been hypothesized that addition of high strength organic waste to conventional wastewater sludge can enhance the generation of onsite biogas at wastewater treatment plants, to meet the energy requirements of the plant partially or fully. To determine the anaerobic biodegradability of fats, oils and grease and fruit waste residuals, lab scale ultimate digestibility tests were conducted for a period of 63 days under mesophilic conditions. High strength organic wastes, thickened waste activated sludge and inoculum were mixed at 9 different ratios, and the mixtures were incubated in 500 mL serum bottles. After 63 days, the highest methane yield of 280 mL/gVS and 243 mL/gVS were obtained with mixtures containing 10% FOG with 10% red apples and 10% FOG only respectively whereas the methane yield of inoculum was only 8 mL/gVS. Preliminary cost analyses were conducted using the laboratory derived data
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Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014297
Subject Headings
Sewage disposal plants--Management, Sewage--Purification--Anaerobic treatment, Biogas
Format
Document (PDF)