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Registros recuperados: 9
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Assessment of hydrogen sulfide removal from biogas using a field scale anoxic biotrickling filter. Repositório Alice
PIROLLI, M.; SILVA, M. L. B. da; MEZZARI, M. P.; MICHELON, W.; PRANDINI, J. M.; SOARES, H. M..
Hydrogen sulphide is one of the most toxic and corrosive compound present in swine-derived biogas streams.In this study, afield scale biotrickling filter for the removal of hydrogen sulfide was investigated.A Biofilter packed with supporting biofilm materials was fed continuously with a proprietary nutrient solution and operatedfor over 73days. The system has been operating with a H2S inlet concentrations ranging from 1,000to 3,000 ppm.Significant removal efficiencies >95% was demonstrated. pH of the stock feeding solution decreased from 6.2 to as low as 3.5within couple days.The resulting drop in pH provided circumstantial evidence to support biological H2 Soxidation to sulphuric acid by sulfide-oxidizers. Sulfur precipitation was also observed to...
Tipo: Separatas Palavras-chave: Biotrickling filter.; Biogás.; Desulfurization; Hydrogen sulfide..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1045503
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Aumento da produção de biomassa de microalgas durante a purificação simultânea de biogás derivado de dejetos dos suínos. I Repositório Alice
PRANDINI, J. M.; SILVA, M. L. B. da; MEZZARI, M. P.; MICHELON, W.; PIROLLI, M.; SOARES, H. M..
Tipo: Separatas Palavras-chave: Biofilter; Swine digestate; Nutrient removal.; Biogás..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1033719
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Avaliação da remoção de sulfeto de hidrogênio a partir do biogás provindo da digestão de efluentes suinícolas utilizando biofiltro em escala campo. Repositório Alice
PIROLLI, M.; SILVA, M. L. B. da; MEZZARI, M. P.; MICHELON, W.; PRANDINI, J. M.; SOARES, H. M..
Tipo: Separatas Palavras-chave: Biofiltro; Sulfeto de hidrogênio; Dessulfurização.; Biogás..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1033724
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Biomass harvest and bioethanol production from chlorella vulgaris treating swine wastewater. Repositório Alice
MEZZARI, M. P.; PIROLLI, M.; PRANDINI, J. M.; NUNES, E. O.; SOARES, H. M.; SILVA, M. L. B. da.
Tipo: Separatas Palavras-chave: Swine wastewater.; Chlorella vulgaris; Bioethanol; Flocculation..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1033629
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Determination of microalgae cellular composition after phycoremediation of swine wastewaters. Repositório Alice
MICHELON, W.; DA SILVA, M. L. B.; MEZZARI, M. P.; PIROLLI, M.; PRANDINI, J.; SOARES, H. M..
Phycoremediation of swine wastewaters has been widely reported as an attractive tertiary treatment system, that effectively removes the excessive nutrient loadswhilst offering a valuable source of feedstock biomass. Digestate from an upflow anaerobic sludge blanket (UASB, 6%v/v) and a nitrification reactor (NR; 50% v/v) were used as culturing media to microalgae. Experiments were carried out in lab scale photobioreactors (PBRs) using a consortia of Chlorella and Scenedesmus. Ammonia (44 to 90%) and phosphorus (77%) were efficiently removed from both effluents tested after 4 days. Microalgae biomass harvested from the UASB effluent showed 57, 34 and 1% of proteins, carbohydrates and lipids, respectively. Comparatively, the cellular composition of microalgae...
Tipo: Separatas Palavras-chave: Carbohydrate; Lipid; Protein; Phycoremediation.; Microalgae..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1045552
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Effects of nitrogen and phosphorus on biochemical composition of microalgae polyculture harvested from phycoremediation of piggery wastewater digestate. Repositório Alice
MICHELON, W.; SILVA, M. L. B. da; MEZZARI, M. P.; PIROLLI, M.; PRANDINI, J. M.; SOARES, H. M..
Abstract: The effects of nitrogen (N) and/or phosphorus (P) starvation on the biochemical composition of native microalgae Chlorella spp. polyculture obtained from the phycoremediation of swine wastewaters were investigated. Microalgae-specific growth rate of 1.2 day(-1) was achieved (30.3 mg L(-1) day(-1)). PO4 (-2) and NH3 were completely removed from swine digestate effluent after 3 and 11 days, respectively. Microalgae harvested immediately after nutrient removal showed high protein (56-59 %) and carbohydrate (25-34 %) but low lipid (1.8-3 %) contents. Depletion of N or P alone stimulated carbohydrate production at the expenses of proteins. Significant lipid accumulation from 3 % ± 0.5 to 16.3 % ± 0.8 was reached...
Tipo: Artigo de periódico Palavras-chave: Swine wastewater; Phycoremediation; Suíno; Microalga; Águas Residuais; Carbohydrates; Lipids; Microalgae.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111098
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Engenharia metabólica: alterando a composição bioquímica das microalgas obtidas do processo de tratamento dos efluentes suinícolas. Repositório Alice
MICHELON, W.; SILVA, M. L. B. da; MEZZARI, M. P.; PIROLLI, M.; PRANDINI, J. M.; SOARES, H. M..
Tipo: Separatas Palavras-chave: Composição celular; Ficorremediação.; Amônia; Fósforo..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1033674
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Enhancement of nutrient removal from swine wastewater digestate coupled to biogas purification by microalgae Scenedesmus spp. Repositório Alice
PRANDINI, J. M.; SILVA, M. L. B. da; MEZZARI, M. P.; PIROLLI, M.; MICHELON, W.; SOARES, H. M..
Tipo: Artigo de periódico Palavras-chave: Suinocultura; Águas Residuais; Microalga; Biogás.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/442693
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Use of swine waste-derived biogas to enhance microalgae productivity. Repositório Alice
PRANDINI, J. M.; SILVA, M. L. B. da; MEZZARI, M. P.; MICHELON, W.; PIROLLI, M.; SOARES, H. M..
The effects of swine wastewater-derived biogas on microalgae productivity were determined. Experiments were conducted in a closed photobioreactor containing digestate effluent as culturing media and biogas in the headspaceas source of CO2. Experiments were carried out under mixothrophic and autothrophic conditions. Results showed that autotrophic growth rate (0.6 d-1)was twofoldfaster than mixotrophic. Frequent reinjections of biogas containing up to 2,000 ppm of hydrogen sulfide was not inhibitory to microalgae growth. The rapid removal of H2S in the system suggests photobioreactors can be an interesting alternative to biogas purification. A model to estimate microalgae productivity based on the amount of available CO2, inorganic and organic carbon was...
Tipo: Separatas Palavras-chave: CO2; H2S; Swine wastewater.; Biofiltration; Microalgae..
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1045545
Registros recuperados: 9
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