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| Registros recuperados: 73 | |
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| Morais, Raissa Kiara oliveira de; Silva, Aderbal Marcos de Azevedo; Bezerra, Leilson Rocha; Carneio, Heloisa; Moreira, Milenna Nunes; Medeiros, Fabiola Franklin de. |
| This study aimed to evaluate the in vitro degradation and total gas production of different oil seed press cakes from a biodiesel production chain gas through the use of a semi-automatic technique of gas production in vitro. The treatments consisted of substituting elephant grass in increasing levels, 0%, 30, 50 and 70%, with the byproducts of Gossyypium hirsutum, Ricinus communis, Moringa oleifeira, Jatropha curcas and Helianthus annus. The oil seed press cakes of Moringa oleifeira had the highest rate of in vitro degradation of dry matter compared with other foods but did not result in a higher final volume of gases production. Gossyypium hirsutum, Pinhão manso curcas and Ricinus communis showed a higher in vitro degradability of similar dry matter. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutriçaão de Ruminantes; Produção Animal degradability; Gossypium hirsutum; Greenhouse gases; Ricinus communis; Ruminal fermentation.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/26309 |
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| Kyu-Hyun Park; Ngwa Martin Ngwabie; University of Guelph; Claudia Wagner-Riddle. |
| Composting has the potential to mitigate methane (CH4) and nitrous oxide (N2O) emissions from manure. The heterogeneous nature of emitting surfaces makes it difficult to quantify these emissions. CH4 and N2O fluxes measured using eight small chambers (0.72 m2) and a mega chamber (90 m2) were compared, and the effect of aeration on the fluxes during composting was studied. Two batches of compost were placed in three channels and 2-3 small flux chambers were deployed on each channel. The channels were enclosed by a building serving as a mega chamber. Chamber location significantly affected gas fluxes, pointing to strong spatial heterogeneity. Mean CH4 fluxes from the small chambers were similar or... |
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Palavras-chave: Chamber; Compost; Greenhouse gases; Aeration; Flux. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2467 |
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| Flores, Edgar Dulay; Dela Cruz, Renita S. M.; Antolin, Ma Cecilia R.. |
| Four corn production systems at farmer-level of operation were evaluated. Environmental performance such as energy use, energy efficiency, greenhouse gas emission (GHG) and carbon efficiency were determined. Data were collected from 60 corn producing farmers using survey questionnaires and face to face interview. The input energy to produce an output energy of 69,714.06 and 73,029.60 MJ/ha for sun drying and mechanical drying, respectively, were 22,346.27, 31, 469.75, 22, 399.05 and 31,522.53 MJ/ha for systems 1 (manual harvesting and sun drying), 2 (manual harvesting and mechanical drying), 3 (mechanical harvesting and sun drying) and 4 (mechanical harvesting and mechanical drying), respectively. The highest energy input was observed for system 4... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural and Bioprocess Engineering; Energy and Environmental Engineering corn; Carbon; Energy; Global warming potential; Greenhouse gases. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3568 |
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| Flores, Edgar Dulay. |
| The energy use and CO2 emissions of eggplant production in the Philippines were analyzed from data collected from 202 eggplant farmers randomly selected from the two major producing provinces of Pangasinan and Quezon, Philippines. Accordingly, the input and output energy of eggplant production were 77,342.09 MJ/ha and 233,905.50 MJ/ha, respectively. Diesel fuel and chemical fertilizer contributed the largest share of energy used in eggplant production. Most of the input energy was utilized in preharvest operations among which the application of fertilizer and water irrigation consumed the largest energy. The energy ratio and energy productivity were 3.02 and 0.51 kg/MJ, respectively. Direct and indirect forms of energy constituted 60.93% and 39.07%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy in Agriculture eggplant; Carbon; Energy; Greenhouse gases; Global warming potentials. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3453 |
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| Sanjay B. Shah; NC State University; Praveen Kolar; Biological and Agricultural Engineering Department, North Carolina State University, Raleigh, NC 27695, USA. |
| Additives can reduce gaseous emissions from swine waste lagoons and pits. We have demonstrated for the first time that an additive has the potential to reduce methane emission from an anaerobic swine lagoon. ManureMax®, a humate product was evaluated for its ability to reduce gas and odor emissions from swine anaerobic lagoon and barn flush-water. Four treatments, Control (no additive), Low (label dosage), Medium (50% higher than label dosage), and High (200% higher than label dosage) were applied to inclined pipes installed in a swine lagoon. While the Medium and High treatments were not effective, the Low treatment reduced methane, 2-butanone, and tetrahydrofuran concentrations by 34%, 44%, and 57%, respectively vs. the Control in the pipe headspace.... |
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Palavras-chave: Agricultural engineering; Environmental engineering; Air quality; Greenhouse gases; Animal waste Hog; Mesocosm-scale; Methane; 2-butanone; Tetrahydrofuran; Volatile fatty acids; Toluene. |
| Ano: 2012 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2111 |
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| Samer, Mohamed. |
| The biogas unit under investigation is a specially designed portable assembly biogas unit and is sought to be widespread and commonly used in Egypt by the Egyptian Environmental Affairs Agency (EEAA). This unit is able to anaerobically treat different types of organic wastes, which are: food waste, kitchen waste, and waste from landscape. The main objective of this study is to perform an environmental impact evaluation of the implementation of this biogas unit. The specific greenhouse gas (GHG) emissions of using the produced biogas from the unit for electricity and heat generation were calculated, where the methodology of life cycle assessment (LCA) was applied. The results show the GHG emissions for each component of the biogas unit and each process... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Life cycle analysis; Biogas units; Food waste; Kitchen waste; Landscape waste; Greenhouse gases. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7047 |
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| Park, Kyu-Hyun; Ngwabie, Ngwa Martin; Wagner-Riddle, Claudia. |
| Composting has the potential to mitigate methane (CH4) and nitrous oxide (N2O) emissions from manure. The heterogeneous nature of emitting surfaces makes it difficult to quantify these emissions. CH4 and N2O fluxes measured using eight small chambers (0.72 m2) and a mega chamber (90 m2) were compared, and the effect of aeration on the fluxes during composting was studied. Two batches of compost were placed in three channels and 2-3 small flux chambers were deployed on each channel. The channels were enclosed by a building serving as a mega chamber. Chamber location significantly affected gas fluxes, pointing to strong spatial heterogeneity. Mean CH4 fluxes from the small chambers were similar or 1.4 times higher compared to the mega chamber. Mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chamber; Compost; Greenhouse gases; Aeration; Flux. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2467 |
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| DIAS,CINTIA M.M.; ROSA,LUIZ P.; GOMEZ,JOSE M.A.; D’AVIGNON,ALEXANDRE. |
| ABSTRACT Sanitation (which includes national public policies for drinking water, sewage services and waste management) is precarious in Brazil and therefore poses a challenge to a range of actors. Poor sanitation impacts public health, education, the environment, and daily life. Globally, it emits increasing greenhouse gases. Universalization of any major public service appears difficult, if not impossible; however, Brazil’s program to universalize access to electricity proves the opposite, as will be shown in this paper. By describing the successful implementation of electricity for everyone, we show that planned public efforts, coordinated with private initiatives and local communities, have worked, and the same can be achieved for the sanitation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solid Waste (SW); Water; Sewage; Sanitation; Greenhouse gases; Sustainable Development Goals (SDGs). |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401337 |
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| KOCH,NATÁLIA MOSSMANN; LUCHETA,FABIANE; KÄFFER,MÁRCIA ISABEL; MARTINS,SUZANA MARIA DE AZEVEDO; VARGAS,VERA MARIA FERRÃO. |
| Abstract Based on the need to monitor air pollution and on the importance of doing it with biological organisms, the present work had as main objective to assess air quality in urban areas through lichen transplants. Besides, we also tested whether there were differences among the studied sites, aiming to point out the main pollution characteristics of the areas. The monitoring was carried out in seven cities, which varied from mainly rural to mainly industrial, in Rio Grande do Sul, southern Brazil. The foliose lichen Parmotrema tinctorum was used as the biomonitor species. Physiological tests and contents of sulphur and heavy metals were measured in the lichen thalli. Other pollutants assessed through air samplers were available for some cities, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Air pollution; Biomonitoring; Greenhouse gases; Heavy metals; Lichenized fungi; Particulate matter. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502233 |
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| Monteiro,Alessandra Nardina Trícia Rigo; Dourmad,Jean-Yves; Pozza,Paulo Cesar. |
| ABSTRACT: Environmental impacts of livestock systems, especially pig production, have come under increasing debate in recent years. The challenge is in meeting the growing demand for food at an affordable cost, without compromising environmental integrity. Previous studies have shown that feed production is responsible for the majority of CO2-eq. emission resulting from pig farming systems. This seems to indicate that feed strategies could be an effective tool to achieve the sustainability of the pork chain. Therefore, dietary crude protein reduction, through the addition of industrial amino acids, lessens the nitrogen excretion by pigs and, consequently, could mitigate the effects on the environment of pig production. In this sense, to effectively... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crude protein; Environmental impact; Global warming potential; Greenhouse gases; Nutrient. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600653 |
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| Inoue,Keles R. A.; Souza,Cecília De F.; Matos,Antonio T.; Sousa,Marilú S.; Vieira,Maria De F. A.. |
| ABSTRACT Swine wastewater have high pollution load, requiring treatment before its disposal into the environment. Methane (CH4) potentially emitted for such waste is considered 21 times more polluting than Carbon dioxide (CO2), and the nitrous oxide (N2O) is considered 310 times. In this way, projects of the Clean Development Mechanism (CDM) and energy use related to the CH4 are worldwide diffused. It was evaluated the potential greenhouse gas emissions in the influent and effluent from digesters and stabilization ponds used to treat the swine wastewaters in two commercial farms operating in full cycle, located in the municipality of Oratorios-MG, Brazil. Using the methodology “AM0006” to estimate the average potential of greenhouse gases, it was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Greenhouse gases; Air pollution; Swine; Waste management. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601198 |
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| The Greenhouse Gas and Animal Agriculture Conference (GGAA) is the premier international conference summarising the collective state of scientific knowledge on greenhouse gas abatement strategies and production systems adaptation needs for the livestock sector. The gathering features leading scientists and policymakers reviewing the current state of knowledge and presenting significant new developments in policy, measurement, modelling, mitigation and adaptation efforts associated with greenhouse gases from animal agriculture. The Conference takes place every 3 years, moving from continent to continent at each edition. The first conference, GGAA2003, was held in Japan with 200 delegates from 20 countries. Five subsequent GGAA conferences have been... |
| Tipo: Livros |
Palavras-chave: Gás de efeito estufa; Baixo carbono; Agricultura de Precisão; Precision agriculture; Greenhouse gases. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1116059 |
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| ROGERIO, M. C. P.; GUEDES, L. F.; ALVES, A. A.; POMPEU, R. C. F. F.; FERREIRA, M. I. C.; ALVES, F. G. da S.; COSTA, C. dos S.; BOMFIM, M. A. D.; GUEDES, F. L.. |
| Este comunicado técnico tem como objetivo indicar estratégias nutricionais como mitigadoras de gases de efeito estufa, aplicadas em grupos genéticos localmente adaptados ao Semiárido brasileiro. Além disso, objetiva-se reforçar para a comunidade formas e ferramentas tecnológicas para a produção sustentável de ovinos no trópico Semiárido. |
| Tipo: Folhetos |
Palavras-chave: Combretum leprosum; Mitigação; Mofumbo; Semiárido; Brasil; Ovino; Mudança Climática; Produção Animal; Alimento Para Animal; Metano; Mucuna Preta; Leguminosa Forrageira; Stizolobium Aterrimum; Caatinga; Sheep; Small ruminants; Greenhouse effect; Greenhouse gases; Ruminant nutrition; Brazil; Semiarid soils. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1117108 |
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| Registros recuperados: 73 | |
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