Consulta: subjectFacets:"Agricultural wastes"
Registros recuperados: 7
Data/hora: 09/06/2024 13:32:12

Aproveitamento de resíduos agroindustriais: uma abordagem sustentável.
Provedor de dados: 14
Autores: VAZ JUNIOR, S.
A produção agropecuária é uma das mais importantes atividades socioeconômicas humanas, uma vez que visa à produção de alimentos, fibras e bioenergia. Mais recentemente a agropecuária passou também a prover matérias-primas diversas para produção de novos bioprodutos e bioinsumos, naquilo que se convencionou chamar de economia circular ou bioeconomia. Isso somente foi possível pelo constante avanço científico-tecnológico que permitiu o desenvolvimento de novas biomassas assim como de novos processos industriais para aproveitamento de culturas dedicadas e também daquilo que outrora era chamado de resíduo. Para se ter uma ideia da dimensão de tal atividade, dados recentes estimam que a produção agrícola mundial seja da ordem de 7,26 Gt, e que o volume de...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Economia circular; Bioeconomia; Biomassa vegetal; Biomassa agrícola; Sustentabilidade; Biomassa; Resíduo Agrícola; Matéria Prima; Biomass; Bioeconomics; Sustainable agriculture; Agricultural wastes.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1126255

Kit perdas: monitoramento das perdas de grãos durante a colheita de soja.
Provedor de dados: 14
Autores: SILVEIRA, J. M.
bitstream/item/178963/1/folder-copo-medidor.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Soja; Desperdício; Perda Durante a Colheita; Soybeans; Meters (equipment); Agricultural wastes.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1092762

Effects of Mixture Ratio of Cow Manure and Greenhouse Wastes on Anaerobic Co-digestion Process
Provedor de dados: 111
Autores: Yaldız, Osman.
The biogas production from the agricultural wastes is accepted as an eco-friendly solution for keep up with increasing energy demand in the world. The cow manure which is produced in every farm is readily available source for biogas production via anaerobic digestion. The main limitation for biogas production from manure is the inhibition of anaerobic microorganisms resulted from the high ammonia/ammonium content of manure. The co-digestion of manure with agricultural wastes is frequently applied to cope with this limitation. This study aims to investigate the biogas production from the co-digestion of cow manure and greenhouse residues in different mixing ratios as input materials. Tomato and pepper wastes from greenhouses were selected as co-substrates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural wastes; Biochemical methane production; Co-digestion; Cow manure.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3151

Extraction of pectin from apple pomace
Provedor de dados: 52
Autores: Canteri-Schemin,Maria Helene; Fertonani,Heloísa Cristina Ramos; Waszczynskyj,Nina; Wosiacki,Gilvan.
As apple-processing units are now in expansion in Brazil, industrial by-products like pomace play an important role in pectin manufacture. The objective of this article was to determine a pratical follow-up to the extraction of pectin from apple pomace and to characterize it in a laboratory, on a small scale, aiming at establishing the optimum conditions for acid extraction. The highest yields were obtained when [1]apple pomace was dried and ground to obtain an apple flour to be used as raw material, [2] citric or nitric acids were used and [3] when the citric acid concentration was 6.2 g/100 ml and the time of reaction was 153 minutes. The apple variety in itself was not significant in pectin yield. The degree of esterification (DE = 68.84 %) of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple pomace; Pectin; Agricultural wastes; Yield; Extraction; Response Surface Methodology.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200013

Hydrolysis of various thai agricultural biomasses using the crude enzyme from Aspergillus aculeatus iizuka FR60 isolated from soil
Provedor de dados: 58
Autores: Boonmee,Atcha.
In this study, forty-two fungi from soil were isolated and tested for their carboxymethyl cellulase (CMCase) and xylanase activities. From all isolates, the fungal isolate FR60, which was identified as Aspergillus aculeatus Iizuka, showed high activities in both CMCase and xylanase with 517 mU/mg protein and 550 mU/mg protein, respectively. The crude enzyme from A. aculeatus Iizuka FR60 could hydrolyze several agricultural residues such as corncob, and sweet sorghum leaf and stalk at comparable rates with respect to the tested commercial enzymes and with a maximum rate in rice hull hydrolysis (29 μg sugar g-1 dry weight substrate mg-1 enzyme hr-1). The highest amount of glucose was obtained from corncob by using the crude enzyme from A. aculeatus Iizuka...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural wastes; Aspergillus aculeatus Iizuka; Enzymatic hydrolysis; Mean specific rate; Reducing sugars.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200005

Growth and production of common bean fertilized with biochar
Provedor de dados: 65
Autores: Silva,Isley Cristiellem Bicalho da; Fernandes,Luiz Arnaldo; Colen,Fernando; Sampaio,Regynaldo Arruda.
ABSTRACT: Production of biochar from organic wastes promises to be an interesting source of plant nutrients, thus reducing pressure on natural resources. To assess the effect of biochar prepared from wastes filtration materials on the growth and production of common bean (Phaseolus vulgaris L.), three simultaneous greenhouse experiments were conducted with three different biochar from organic wastes (rice husk, sawdust, and sorghum silage) using as filtration material for swine biofertilizer. In each experiment the treatments consisted of the addition of five different biochar concentrations (0%, 2.5%, 5%, 7.5%, and 10% v/v), arranged in a completely random design, with four repetitions. Application of biochar increased the root dry mass, shoot dry mass,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural wastes; Alternative source of nutrients; Phaseolusvulgaris L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100152

THERMAL STABILITY OF Pinus oocarpa AND MAIZE COB PARTICLEBOARDS
Provedor de dados: 64
Autores: Scatolino,Mário Vanoli; Protásio,Thiago de Paula; Mendes,Rafael Farinassi; Mendes,Lourival Marin.
Agricultural waste materials are generated in large quantities in Brazil. These can accumulate and cause serious environmental problems. One of the most commonly generated wastes in the brazilian agricultural culture is the maize cob. Being lignocellulosic in nature, the maize cob can find use as the raw material in the production of particleboards mainly concerned with furniture making. Therefore, studies regarding its thermal stability and fire resistance would be interesting. The aim of this study was to evaluate the combustibility and thermal stability of the particleboards produced from maize cob and Pinus oocarpa wood. The percentages in which maize cob was associated with Pinus oocarpa were 0%, 25%, 50%, 75% and 100%. The panels were produced using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural wastes; Combustion; Thermal properties.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000400348