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| Andrade,Willian R.; Ferreira,Cecilia de F. S.; Gates,Richard S.; Borges,Alisson C.; Santos,Tânia M. B. dos. |
| ABSTRACT This study aimed to assess the anaerobic digestion response of laying hen manure with different inclusion levels of biochar in batch reactors as measured by physicochemical parameters, biogas production and digestate quality. Four levels of biochar inclusions (0, 2.5, 5.0 and 7.5%) were tested with 3 replicates each. Twelve two-liter anaerobic batch reactors were used for 86 days at 35°C. Substrate and digestate of each treatment were assessed for monitored parameters, biogas production and digestate quality. Increased levels (0, 2.5, 5.0 and 7.5%) of biochar were found to gradually reduce total ammonia nitrogen (1794.33, 140.84, 950.81 and 509.32 mg.L-1, respectively). Despite the positive effect of biochar to accelerate initial biogas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogas yield; Total ammonia nitrogen; Volatile solids. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300315 |
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| Lopes,WRT; Orrico,ACA; Garcia,RG; Orrico Jr,MAP; Manarelli,DM; Fava,AF; Nääs,IA. |
| ABSTRACT The objective of this study was to determine the optimal inclusion level of liquid egg hatchery waste for the anaerobic co-digestion of dairy cattle manure. A completely randomized experimental was applied, with seven treatments (liquid hatchery waste to cattle manure ratios of0: 100, 5:95, 10:90, 15:85, 20:80, 25:75 and 30:70), with five replicates (batch digester model) each. The evaluated variables were disappearance of total solids (TS), volatile solids (VS), and neutral detergent fiber (NDF), and specific production of biogas and of methane. Maximum TS and VS disappearance of 41.3% and 49.6%, were obtained at 15.5% and 16.0% liquid hatchery waste inclusion levels. The addition of 22.3% liquid hatchery considerably reduced NDF substrate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry production; Biogas; Methane; Total solids; Volatile solids. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600065 |
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| Sunada,Natália da Silva; Orrico,Ana Carolina Amorim; Orrico Júnior,Marco Antônio Previdelli; Vargas Junior,Fernando Miranda de; Garcia,Rodrigo Garófallo; Fernandes,Alexandre Rodrigo Mendes. |
| The objective of this study was to evaluate the efficiency of anaerobic digestion on the treatment of effluent from poultry slaughterhouse. The experiment was conducted at the Laboratory of Waste Recycling from Animal Production/FCA/UFGD. During four weeks, eight experimental digesters, semi-continuous models, were loaded and set according to the hydraulic retention time (HRT) of 7, 14, 21 and 28 days, and according to the solid fraction treatment, separated with 1 mm sieve or without separation. The average weekly production of biogas and methane as well as the methane concentrations, the potential production per amount of chemical oxygen demand (COD) added and reduced, the concentrations of N, P and K at the beginning and end of process, and the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical oxygen demand; Total solids; Volatile solids. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100013 |
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| Orrico Junior,Marco Antonio Previdelli; Orrico,Ana Carolina Amorim; Fava,Aldo Felipe; Sunada,Natália da Silva; Schwingel,Alice Watte; Garcia,Rodrigo Garófallo; Borquis,Rusbel Raul Aspilcueta. |
| ABSTRACT: The composting of laying hen manure is an efficient way of treating waste and producing an organic fertilizer with excellent characteristics; however, the high N losses reduce its concentration in the resulting fertilizer. Associating this residue with crude glycerin (CG) promotes a better C:N ratio and contributes to higher N retention during composting, with improvements in solids reduction and production of organic fertilizer with higher concentration of this nutrient. We carried out this research considering the hypothesis that adding CG – a byproduct of biodiesel production – to laying hen waste composting provides better N retention in the fertilizer generated. Increasing CG doses (0, 3, 6, 9, and 12 % in relation to the fresh mass in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Windrows; Total solids; Volatile solids. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500361 |
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