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Biocarbones (Biochars), caracterización y efecto en la biomasa y nutrición de N P K en una gramínea. Colegio de Postgraduados
Escalante Rebolledo, María Ariadna.
Uno de los desafíos actuales para la ciencia y la tecnología es crear o innovar conocimientos existentes que permitan resolver las necesidades que tiene la población del país. Para ello es necesario conocer tales necesidades y poder estudiar las estrategias y tecnologías pertinentes que lleven a la solución de dicha situación. La demanda alimenticia actual en México es cada día mayor y ésta contrasta con el estado de abandono del campo. En particular nos preocupa el grado de deterioro que presenta el recurso suelo, así como la escasez de prácticas agronómicas que eleven la productividad de los cultivos. Esto nos lleva a probar tecnologías que en otras partes del mundo, aunque sea a nivel de investigación, han resultado en un beneficio para el campo. El...
Palavras-chave: Biochar; Pirólisis; Caracterización; Secuestro de carbono; Bioenergía; Biomasa; Pyrolysis; Soil carbon sequestration; Biofuels; Biomass; Edafología; Doctorado.
Ano: 2013 URL: http://hdl.handle.net/10521/2209
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Biochar and soil nitrous oxide emissions. Repositório Alice
ALHO, C. F. B. V..; CARDOSO, A. da S.; ALVES, B. J. R.; NOVOTNY, E. H..
The objective of this work was to evaluate the effect of biochar application on soil nitrous oxide emissions. The experiment was carried out in pots under greenhouse conditions. Four levels of ground commercial charcoal of 2 mm (biochar) were evaluated in a sandy Albaqualf (90% of sand): 0, 3, 6, and 9 Mg ha‑1. All treatments received 100 kg ha‑1 of N as urea. A cubic effect of biochar levels was observed on the N2O emissions. Biochar doses above 5 Mg ha‑1 started to mitigate the emissions in the evaluated soil. However, lower doses promote the emissions.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Lignocellulosic residues; Greenhouse gases; Pyrolysis.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/930324
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Biochar and soil nitrous oxide emissions PAB
Alho,Carlos Francisco Brazão Vieira; Cardoso,Abmael da Silva; Alves,Bruno José Rodrigues; Novotny,Etelvino Henrique.
The objective of this work was to evaluate the effect of biochar application on soil nitrous oxide emissions. The experiment was carried out in pots under greenhouse conditions. Four levels of ground commercial charcoal of 2 mm (biochar) were evaluated in a sandy Albaqualf (90% of sand): 0, 3, 6, and 9 Mg ha-1. All treatments received 100 kg ha-1 of N as urea. A cubic effect of biochar levels was observed on the N2O emissions. Biochar doses above 5 Mg ha-1 started to mitigate the emissions in the evaluated soil. However, lower doses promote the emissions.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lignocellulosic residues; Greenhouse gases; Pyrolysis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000500013
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Biochar and Trichoderma harzianum for the Control of Macrophomina phaseolina BABT
Araujo,Alyson Silva de; Blum,Luiz Eduardo Bassay; Figueiredo,Cícero Célio de.
Abstract This study is based on the importance of biological control methods and the lack of information on the effect of biochar (BCH) from sewage sludge associated or not with Trichoderma harzianum on the control of Macrophomina phaseolina in the bean crop (Phaseolus vulgaris, cv. BRS Estilo). Biochar from sewage sludge, pyrolyzed at 500 ºC and used in low concentration (0.5%), has a direct effect on the in vitro control of M. phaseolina. However, higher BCH concentrations stimulated the growth of the pathogen. In culture medium with or without BCH, T. harzianum (strain 1306) inhibited the mycelial growth of M. phaseolina. The addition of BCH + T. harzianum reduced the deleterious effects caused by M. phaseolina on bean plants. This study demonstrated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyrolysis; Biological control; Gray rot.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100202
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Biochar association with phosphate fertilizer and its influence on phosphorus use efficiency by maize Ciência e Agrotecnologia
Santos,Sara Ramos dos; Lustosa Filho,José Ferreira; Vergütz,Leonardus; Melo,Leônidas Carrijo Azevedo.
ABSTRACT The use of fertilizers with some degree of protection of the phosphate ions can reduce soil adsorption and increase the absorption by plants, increasing the efficiency of phosphorus (P) fertilization. This study aimed to evaluate the performance of a phosphate fertilizer associated with biochar in granules in a P-fixing soil in a greenhouse experiment. Biochars were produced from two sources of biomass: sugarcane bagasse (SB) and wood sawdust (WS), which were pyrolysed at two temperatures (350 °C and 700 °C). After chemical and physical characterization, the biochar samples were granulated with triple superphosphate (TSP) in a 3:1 ratio (TSP: biochar). The agronomic evaluation of the fertilizers was carried out by two successive maize crops (Zea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic residues; Adsorption; Pyrolysis; Tropical soils..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100202
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Biochar in substrate composition for production of teak seedlings PAB
Rezende,Fabiana Abreu; Santos,Victor Alexandre Hardt Ferreira dos; Maia,Claudia Maria Branco de Freitas; Morales,Marina Moura.
Abstract The objective of this work was to evaluate the development and quality of clonal seedlings of teak (Tectona grandis) grown in substrate with two types of biochar. The assay was carried out in a randomized complete block design, with ten treatments and four replicates: CS, commercial substrate, composed of pine bark and vermiculite at a ratio of 4:1; NS, nursery substrate composed of carbonized rice husk and coconut fiber at 1:1; and the remaining treatments were composed of the inclusions of biochar (BC) or activated biochar (BCA) in the CS, at the proportions of 25, 50, 75, and 100%. The development and quality parameters of seedlings were evaluated 90 days after striking the minicuttings in the substrates. BCA substrate additions at 25, 50, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tectona grandis; Agroindustrial waste; Biochar activity; Pyrolysis; Seedling quality.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901449
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Biochar in sugar beet production and nutrition Ciência Rural
Zelaya,Katherin Prissila Sevilla; Alves,Barbara Samartini Queiroz; Colen,Fernando; Frazão,Leidivan Almeida; Sampaio,Regynaldo Arruda; Pegoraro,Rodinei Facco; Fernandes,Luiz Arnaldo.
ABSTRACT: The biomass pyrolysis process may be an alternative for the agricultural use of sewage sludge. This study aimed to evaluate the use of of biochars from mixture of sewage sludge and sugarcane bagasse (BB, 1:1 relationship sewage sludge and sugarcane bagasse) on sugar beet (Beta vulgaris L.) production and nutrition. A greenhouse experiment was conducted with five application rates of BB: 0, 2.5, 5, 7.5, and 10% (v/v), and two additional treatments, biochar from sewage sludge (BS, application rate 5% (v/v)) and conventional treatment (CV) that received lime and mineral fertilizer. The treated soils were incubated for 45 days, after which, seedlings were cultivated for 55 days. Biochar produce from sewage sludge and sugarcane bagasse is an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beta vulgaris L.; Trace elements; Pyrolysis; Fine roots..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000500202
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Caracterización de biochars producidos a partir de (Miscanthus x giganteus y Aspidosperma quebracho-blanco. Repositório Alice
DELAYE, L. A. M.; MAIA, C. M. B. de F.; IRIZAR, A. B.; ANDRIULO, A. E..
2016
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Material orgânico; Stable carbon; Carbono estable; Biochar; Pyrolysis.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1056054
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Characterization of phosphate structures in biochar from swine bones PAB
Novotny,Etelvino Henrique; Auccaise,Ruben; Velloso,Marcia Helena Rodrigues; Corrêa,Juliano Corulli; Higarashi,Martha Mayumi; Abreu,Valéria Maria Nascimento; Rocha,José Dilcio; Kwapinski,Witold.
The objective of this work was to develop an alternative methodology to study and characterize the phosphate crystalline properties, directly associated with solubility and plant availability, in biochar from swine bones. Some phosphate symmetry properties of pyrolyzed swine bones were established, using solid state nuclear magnetic resonance spectroscopy, principal component analysis, and multivariate curve resolution analysis, on four pyrolyzed samples at different carbonization intensities. Increasing carbonization parameters (temperature or residence time) generates diverse phosphate structures, increasing their symmetry and decreasing the crossed polarizability of the pair ¹H-31P, producing phosphates with, probably, lower solubility than the ones...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone phosphate; Phosphate availability; Principal component analysis; Pyrolysis; Multivariedade curve resolution analysis; Soil fertility.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000500006
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Economic Feasibility of a Mobile Fast Pyrolysis System for Sustainable Bio-crude Oil Production AgEcon
Palma, Marco A.; Richardson, James W.; Roberson, Brad E.; Ribera, Luis A.; Outlaw, Joe L.; Munster, Clyde.
The Official journal of IFAMA. www.ifama.org
Tipo: Journal Article Palavras-chave: Biofuels; Pyrolysis; Economic analysis; Agribusiness; Demand and Price Analysis; Production Economics; Resource /Energy Economics and Policy; Q010; Q240; Q160.
Ano: 2011 URL: http://purl.umn.edu/114636
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Effect of pyrolysis temperature and feedstock type on agricultural properties and stability of biochars. Repositório Alice
CONZ, R. F.; ABBRUZZINI, T. F.; ANDRADE, C. A. de; MILORI, D. M. B. P.; CERRI, C. E. P..
Pyrolysis temperature and feedstock type used to produce biochar influence the physicochemical properties of the obtained product, which in turn display a range of results when used as soil amendment. From soil carbon (C) sequestration strategy to nutrient source, biochar is used to enhance soil properties and to improve agricultural production. However, contrasting effects are observed from biochar application to soil results from a wide range of biochar?s properties in combination with specific environmental conditions. Therefore, elucidation on the effect of pyrolysis conditions and feedstock type on biochar properties may provide basic information to the understanding of soil and biochar interactions. In this study, biochar was produced from four...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: C Sequestration; GHG; Char; Organic carbon; Biocarvão; Pirólise; Biochar; Carbon sequestration; Pyrolysis.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080700
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Effect of Quail Litter Biochar on Productivity of Four New Physic Nut Varieties Planted in Cadmium-Contaminated Soil Chilean J. Agric. Res.
Suppadit,Tawadchai; Kitikoon,Viroj; Phubphol,Anucha; Neumnoi,Penthip.
Biochar can improve soil structure and water retention, enhance nutrient availability and retention, ameliorate acidity, and reduce heavy metal toxicity to plant roots. In this study, a basin experiment was conducted to investigate the effects of quail litter biochar (QLB) on the availability of Cd to physic nut (Jatropha curcas L.) plants. QLB was applied to the soil in which four new physic nut varieties (Takfa, Doi Saket, Lao, and Rayong) in factorial combinations at four levels (0, 5, 10, and 15 g kg-1 soil) to soil that contained 60.8 mg Cd kg-1. After transplanting plant height and canopy radius were measured every 2-mo and the number of leaves and branches at 6-mo, while yield components and Cd residues were measured at 8-mo intervals. The...
Tipo: Journal article Palavras-chave: Adsorption; Heavy metal; Phytoremediation; Plant production; Pyrolysis; Soil amendment.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100020
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Energetic use of solid products of pyrolysis technology CIGR Journal
Malatak, Jan.
At the present time there has been a serious question of non-renewable energy resources substitution that is why solved problem has worldwide meaning within high increase of fuels consumption from renewable energy resources. The aim of this paper is definition of other possibilities and limits for energetic utilization of solid biomass modified by pyrolysis technology to biochar.   Analyzed samples are processed into the form of pellets in diameter 8 mm made from rape straw. There is used laboratory pyrolysis unit working on the principle of slow pyrolysis reaction which processes samples at the temperature of 400 °C and taking 220 minutes in reactor filled by nitrogen medium. The experimental part of the work is based on elemental and stoichiometric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biofuels; Elemental analysis; Stoichiometric analysis; Pyrolysis; Combustion.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3078
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Energy and Chemicals from Native Grasses: Production, Transportation and Processing Technologies Considered in the Northern Great Plains AgEcon
Tiffany, Douglas G.; Jordan, Brendan; Dietrich, Erin; Vargo-Daggett, Becca.
Production of biomass from native prairie species offers the opportunity to produce energy and chemicals while providing substantial ecological services in the Northern Great Plains. This paper analyzes the application of rapid pyrolysis to produce bio-oil, which has the potential for use as a low-grade fuel oil or as a source for extraction of valuable chemicals. Yields of bio-oil, the quantities of extractable chemicals, and chemical prices drive the economics of this concept, which has a more extensive track record utilizing wood chips. A spreadsheet model was developed to determine gross margins available to defray costs to extract and refine such chemical products as hydroxyacetaldehyde, phenol, formic acid, acetic acid and various resins....
Tipo: Working or Discussion Paper Palavras-chave: Prairie grasses; Pyrolysis; Economics; Chemicals; Energy; Bio-oil; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/13838
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Evaluation of the quality of Qualea parviflora charcoal PFB - Pesquisa Florestal Brasileira
Protásio, Thiago de Paula; Santana, João de Deus Pereira de; Guimarães Neto, Rosalvo Maciel; Guimarães Júnior, José Benedito; Trugilho, Paulo Fernando; Ribeiro, Ioleide Bispo.
This work aimed to verify the influence of the sampling longitudinal position in Qualea parviflora Mart. in the quality of charcoal and the statistical relation among the variables measured in this biofuel. Five trees were evaluated. In each one, 5 cm – thickness discs were obtained in the base, DBH (1.30 m), middle and top. The wood was carbonized in a muffle furnace, considering a heating rate of 1.67 ºC min-1. The yields in charcoal pyroligneous extract, in non-condensable gases and in fixed carbon and volatile matters, fixed carbon and ash contents, besides relative apparent density of the charcoal were determined. In the evaluation of the experiment, an entirely randomized design was used with five repetitions, being different sampling position...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyrolysis; Correlations; Sampling; Models.
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/276
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Policies to Facilitate Conversion of Millions of Acres to the Production of Biofuel Feedstock AgEcon
Epplin, Francis M.; Haque, Mohua.
First-generation grain ethanol biofuel has affected the historical excess capacity problem in U.S. agriculture. Second-generation cellulosic ethanol biofuel has had difficulty achieving cost-competitiveness. Third-generation drop-in biofuels are under development. If lignocellulosic biomass from perennial grasses becomes the feedstock of choice for second- and third-generation biorefineries, an integrated system could evolve in which a biorefinery directly manages feedstock production, harvest, storage, and delivery. Modeling was conducted to determine the potential economic benefits from an integrated system. Relatively low-cost public policies that could be implemented to facilitate economic efficiency are proposed.
Tipo: Journal Article Palavras-chave: Biomass; Bio-oil; Cellulosic; Drop-in fuels; Ethanol; Land-lease contract; Lignocellulosic; Pyrolysis; Switchgrass; Resource /Energy Economics and Policy; Q16; Q18; Q15; Q42.
Ano: 2011 URL: http://purl.umn.edu/113532
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Potencial do biocarvão para a produção de milho e melhoria da qualidade do solo. Repositório Alice
PEREIRA, J. R. C..
O biocarvão é uma forma estável de carbono que proporciona melhoria em diversos atributos do solo e na disponibilidade de nutrientes para as plantas. O objetivo deste trabalho foi avaliar o potencial do biocarvão, produzido a partir de matérias-primas regionais, como condicionador do solo, a fim de reduzir os efeitos das limitações edafoclimáticas e garantir a produtividade em sistemas de produção de milho dependentes de chuva no Semiárido brasileiro. Para avaliar o efeito do biocarvão sobre a produção de biomassa do milho foi realizado um experimento em vasos, com esquema fatorial [3x5] (3 tipos de biocarvão, 5 doses de biocarvão) em delineamento ao acaso, com quatro repetições. Foram utilizados três tipos de biocarvão (resíduo de poda de mangueira,...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Biomassa carbonizada; Pirólise; Biocarvão; Semiárido; Qualidade do solo; Agricultura dependente de chuva; Rendimento de culturas; Biomassa; Carbono; Solo; Qualidade; Pyrolysis; Biomass; Soil quality; Crop yield; Rainfall duration.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1107756
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Production of biochar and chemical products from banana and coffee residues after acid hydrolysis. Repositório Alice
RAMBO, M. K. D.; NOVOTNY, E. H.; CANELLAS, L. P.; AGUIAR, N. O.; AUCAISSE, R..
The use of the residues from renewable feedstock, besides the production of power and heat, but also for the generation of chemicals products, has become a priority. Superior plants have considerable potential as carbohydrate, aryl and fat acids sources. However, the separation of the main constituents of the samples is necessary for several purposes in the biorefinery concept. The acid hydrolysis is a very promising technology, however it was detected carbohydrates (14-17%) in the residues after the conventional acid hydrolysis of some uncommon biomasses (e.g. coffee husk and banana stem and stalk), indicating the adjustment need of the hydrolysis conditions for different biomasses. On the other hand, it was showed that, by pyrolysis, it is possible to...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Biomassa lignocelulósica; Biochar; Biorrefinaria; Hidrólise ácida; Pirólise analítica; Ressonância magnética nuclear do Carbono 13; Biomassa carbonizada; Biomassa; Hidrólise; Biomass; Biorefining; Acid hydrolysis; Pyrolysis.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001416
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Selective extraction of the characteristic humic fraction from Terras Pretas de Índios. Repositório Alice
NOVOTNY, E. H.; VELLOSO, M. H. R.; BONAGAMBA, T. J.; SONG, G.; HAYES, M. H. B..
2010
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pyrolysis; Biochar; 13 C Solid state NMR.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/875904
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Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils Acta Amazonica
MATOSO,Stella Cristiani Gonçalves; WADT,Paulo Guilherme Salvador; SOUZA JÚNIOR,Valdomiro Severino de; PÉREZ,Xosé Lois Otero.
ABSTRACT Phosphorus (P) is one of the nutrients that most limits agricultural productivity, especially in tropical soils. Enriched biochar has been proposed to increase the bioavailability of P and other nutrients in the soil. Thus, the objective of this study was to evaluate the availability of P in phosphate biochar (composed of biomass and soil) as a function of the triple superphosphate mixture before and after the pyrolysis process. We produced eight types of enriched biochar via pyrolysis by combining sandy or clayey soil with rice or coffee husk, and by adding triple superphosphate before or after pyrolysis. The heating of the phosphate fertilizer during the pyrolysis process resulted in a higher crystallinity of the phosphates, lower content of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian soils; Coffee husk; Rice husk; Pyrolysis; Triple superphosphate; Biochar quality.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400268
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Primeira ... 12 ... Última
 

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