Crude glycerin in anaerobic co-digestion of dairy cattle manure increases methane production
| Autor: | Mônica Sarolli Silva de Mendonça Costa, Marco Antonio Previdelli Orrico Junior, Silvana Simm, Ana Carolina Amorim Orrico, Natália da Silva Sunada, Alice Watte Schwingel |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
anaerobic digestion
020209 energy 02 engineering and technology glycerol 010501 environmental sciences 01 natural sciences Methane chemistry.chemical_compound Animal science solids Biogas Bioenergy 0202 electrical engineering electronic engineering information engineering biogas lcsh:Agriculture (General) Dairy cattle 0105 earth and related environmental sciences Chemistry business.industry Total dissolved solids lcsh:S1-972 Manure Biotechnology Anaerobic digestion Biofuel Animal Science and Zoology business Agronomy and Crop Science |
| Zdroj: | Scientia Agricola, Volume: 74, Issue: 3, Pages: 175-179, Published: JUN 2017 Scientia Agricola v.74 n.3 2017 Scientia Agrícola Universidade de São Paulo (USP) instacron:USP Scientia Agricola, Vol 74, Iss 3, Pp 175-179 |
| Popis: | Anaerobic digestion of crude glycerin (CG) along with animal waste has been an excellent option for increasing the production of biogas and methane to achieve efficiency in the treatment of both residues. This study aimed to evaluate improvements in specific productions of biogas and methane, reductions in solid and fibrous components in substrates prepared with dairy cattle manure and CG (containing 14 % glycerol). With these residues, experimental substrates were prepared and placed in 25 batch digesters. Initial content of the TS in the influent was 4 % and CG was added in increasing doses (0, 5, 10, 15 and 20 % relative to total solids (TS) of the influent). Results were submitted to ANOVA and orthogonal contrasts to assess the effects of linear and quadratic order and thereby estimate the optimal CG doses through the adjusted models. The highest values for specific production of methane (0.19 and 0.26 L g−1 of TS and volatile solids (VS) added, respectively) were reached with the CG inclusions of 6 and 8 %, respectively. Total production of biogas with the inclusion of 6 % CG was 11 % higher when compared to the control treatment. The largest reduction in VS (48 %) was achieved with the addition of 4 % CG. Addition of CG at levels between 3 and 8 % improved the efficiency of the process of anaerobic digestion with dairy cattle manure. |
| Databáze: | OpenAIRE |
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