Inoculum source for anaerobic fermentation of coffee pulp

Boopathy, R.

doi:10.1007/bf00253037

Cited by 10 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anaerobic digestion of coffee waste has been reported at mesophilic temperatures (Lane, 1983;Raetz, 1990) and also at thermophilic temperatures (Kida et al, 1992;Kostenberg and Marchain, 1993). Boopathy (1987) studied different inoculum sources and found that the biomass from a sewage digester appeared to acclimatise quickly to the coffee pulp. When studying the digestion of coffee waste in a continuous reactor at mesophilic temperatures, Lane (1983) found a decline in the gas production after 80 d, due to some inhibitory compounds.…”

Section: Introductionmentioning

confidence: 98%

Anaerobic co-digestion of coffee waste and sewage sludge

2006

View full text Add to dashboard Cite

The feasibility of the anaerobic co-digestion of coffee solid waste and sewage sludge was assessed. Five different solid wastes with different chemical properties were studied in mesophilic batch assays, providing basic data on the methane production, reduction of total and volatile solids and hydrolysis rate constant. Most of the wastes had a methane yield of 0.24-0.28 m3 CH4(STP)/kg VS(initial) and 76-89% of the theoretical methane yield was achieved. Reduction of 50-73% in total solids and 75-80% in volatile solids were obtained and the hydrolysis rate constants were in the range of 0.035-0.063 d(-1). One of the solid wastes, composed of 100% barley, achieved a methane yield of 0.02 m3 CH4(STP)/kg VS(initial), reductions of 31% in total solids, 40% in volatile solids and achieved only 11% of the theoretical methane yield. However, this waste presented the highest hydrolysis rate constant. Considering all the wastes, an inverse linear correlation was obtained between methane yield and the hydrolysis rate constant, suggesting that hydrolysis was not the limiting factor in the anaerobic biodegradability of this type of waste.

show abstract

Section: Introductionmentioning

confidence: 98%

Anaerobic co-digestion of coffee waste and sewage sludge

2006

View full text Add to dashboard Cite

show abstract

“…Most studies on the anaerobic digestion of coffee waste have been performed on the pulp produced during primary processing (10,11). This pulp can be anaerobically fermented, but its composition, including up to 8.5% tannins, 3% caffeine and caffeic acid, 2.6% chlorogenic acid and 6.5% pectic materials (12) makes the digestion process unstable (6,13,14).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic digestion and horticultural value of solid waste from manufacture of instant coffee

Kostenberg

Marchaim

1993

Environmental Technology

View full text Add to dashboard Cite

Anaerobic methanogenic thermophilic digestion (AMTD) of the solid fraction of waste from an instant coffee factory was carried out in laboratory scale digesters. Optimal conditions were established for stable fermentation by controlling loading rates, pH, volatile fatty acid concentrations, biogas production and composition. The results of the experiments indicated that steady digestion can be maintained at organic loading rates up to 8.6 g VS L -1 d -1 , at a hydraulic retention time of 20 days, with pH at 7.5-8.2. Biogas production (62% methane) reached 1.8 L L -1 d -1 . The residual slurry of the digestion process was examined as a growth medium in horticulture. Trials of fermented solids, mixed with sphagnum peat-moss in proportions of 1:1 or 3:1 and used as growth media for ornamental plants (Gypsophila, Lysimachia and Phlox), showed a promotional effect on growth in the root systems.

show abstract

“…Heterotrophic degradation of organic matter releases nutrients for use by phytoplankton, and the organic substrate supports growth of protozoa and ciliates, which can be used by animals of higher trophic levels (Levinton et al 1984). The efficiency of a microbial community in mineralization depends largely on the chemical and physical constituents of the organic substrate, and on the presence of functional bacterial groups, both heterotrophs and chemotrophs (Newell 1984;Sohier and Bianchi 1985;Moriarty 1986;Boopathy 1987).…”

mentioning

confidence: 99%

Water Quality and Microbial Dynamics in Shrimp Ponds Receiving Bagasse‐Based Feed

Visscher

Duerr

1991

J World Aquaculture Soc

View full text Add to dashboard Cite

Pond water quality and associated microbial biomass were studied in relation to the type of feed applied during the culture of the marine shrimp Penaeus vannamei. The feeds tested included conventional feedlot manure as well as two feeds based on bagasse, a sugarcane waste product.Physical and chemical parameters were studied during a 100 day trial in 200 m2 earthen ponds.Both bagasse-based feeds supported a significantly larger microbial community as measured by specific biomass numbers (P < 0.01), ATP content (P < 0.001) and amount of the particulate organic matter present on pond bottoms (P -= 0.025). For both bagasse-based treatments, the estimated bacterial cell number in the flocculent layer was 3.11 x 1012/m2, compared to the much lower cell number of 7.53 x 1010/m2 for control ponds. Harvest data suggest that bagasse forms a potential base for feeds when applied to extensive shrimp cultures.

show abstract

Inoculum source for anaerobic fermentation of coffee pulp

Cited by 10 publications

References 6 publications

Anaerobic co-digestion of coffee waste and sewage sludge

Anaerobic co-digestion of coffee waste and sewage sludge

Anaerobic digestion and horticultural value of solid waste from manufacture of instant coffee

Water Quality and Microbial Dynamics in Shrimp Ponds Receiving Bagasse‐Based Feed

Contact Info

Product

Resources

About