Consulta: subjectFacets:"Pyrolysis"
Registros recuperados: 18
Data/hora: 10/06/2024 06:44:26

Biocarbones (Biochars), caracterización y efecto en la biomasa y nutrición de N P K en una gramínea.
Provedor de dados: 32
Autores: 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

Evaluation of the quality of Qualea parviflora charcoal
Provedor de dados: 190
Autores: 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

Biochar and soil nitrous oxide emissions
Provedor de dados: 86
Autores: 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

Characterization of phosphate structures in biochar from swine bones
Provedor de dados: 86
Autores: 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

Biochar in substrate composition for production of teak seedlings
Provedor de dados: 86
Autores: 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

Energy and Chemicals from Native Grasses: Production, Transportation and Processing Technologies Considered in the Northern Great Plains
Provedor de dados: 31
Autores: 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

Policies to Facilitate Conversion of Millions of Acres to the Production of Biofuel Feedstock
Provedor de dados: 31
Autores: 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

Economic Feasibility of a Mobile Fast Pyrolysis System for Sustainable Bio-crude Oil Production
Provedor de dados: 31
Autores: 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

Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils
Provedor de dados: 36
Autores: 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

USE OF BIOCHAR IN AGRICULTURE
Provedor de dados: 37
Autores: SÁNCHEZ-REINOSO,Alefsi David; ÁVILA-PEDRAZA,Edgar Alvaro; RESTREPO-DÍAZ,Hermann.
ABSTRACT The objective of this review is to show how biochar (BC) can be obtained and its effects on the physicochemical properties of soils and physiological behavior of cultivated plants. Biochar is a product rich in carbon that comes from the pyrolysis of biomass, generally of vegetable origin. It is obtained by the decomposition of organic matter exposed to temperatures between 200-900 °C in an atmosphere with low oxygen availability (pyrolysis), which can be slow, intermediate or fast. BC can contain varying levels of elements such as: carbon, nitrogen, oxygen, hydrogen, and sulfur. The primary sources to produce biochar are the forest, agroindustrial, and manure residues. BC quality and physical-chemical characteristics will depend on the type of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon capture; Mineralization; Plant nutrition; Pyrolysis.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000200327

Energetic use of solid products of pyrolysis technology
Provedor de dados: 111
Autores: 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

The combination of compost or biochar with urea and NBPT can improve nitrogen-use efficiency in maize
Provedor de dados: 42
Autores: COELHO,MICHELLE A.; FUSCONI,ROBERTA; PINHEIRO,LILIANE; RAMOS,IONARA C.; FERREIRA,ADÃO S.
ABSTRACT The addition of organic residues to agricultural soils has been used as a practical alternative to improve crop quality and health. The objective of this work was to evaluate maize physiological and nutritional responses to the application of compost and biochar combined with urea (N) and N-(n-butyl) thiophosphoric triamide (NBPT). The experiment was performed in plastic pots with 3 kg of soil under greenhouse conditions for 30 days. The compost and biochar were applied at the rate of 0.3 ton ha-1, using an amount of nutrient (nitrogen, phosphorus and potassium) demanded by crop growth. The physiological responses of maize were monitored by measuring the plant height, stalk diameter, leaf chlorophyll content, shoot dry weight and root dry weight....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composting; Pyrolysis; Nitrogen uptake; N-(n-butyl) thiophosphoric triamide; Nutrient assimilation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401695

Biochar and Trichoderma harzianum for the Control of Macrophomina phaseolina
Provedor de dados: 52
Autores: 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

The Effect of using Quail Litter Biochar on Soybean (Glycine max L. Merr.) Production
Provedor de dados: 117
Autores: Suppadit,Tawadchai; Phumkokrak,Nittaya; Poungsuk,Pakkapong.
Biochars can be used as soil amendments for improving soil properties and crop yield. The objective of this research was to study the plant growth, yield, yield components, and seed quality, including nutrients and heavy metals (Pb, Cd, and Hg), in the soybean plant (Glycine max L. Merr.) and soil. The experiment was conducted from September 2010 to January 2011 in a greenhouse located in the Dan Khun Thot District, Nakhon Ratchasima Province, Thailand. The research comprised six treatments with four replicates in a completely randomized design. Quail litter biochar (QLB) at rates of 0, 24.6, 49.2, 73.8, 98.4 and 123 g per pot mixture were provided to soybean cv. Chiang Mai 60. The results showed that QLB could be used as a soil fertility improvement and...
Tipo: Journal article
Palavras-chave: Crop yield; Element; Nutrient uptake; Pyrolysis; Soil fertility.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200013

Effect of Quail Litter Biochar on Productivity of Four New Physic Nut Varieties Planted in Cadmium-Contaminated Soil
Provedor de dados: 117
Autores: 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

Biochar in sugar beet production and nutrition
Provedor de dados: 65
Autores: 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

Biochar association with phosphate fertilizer and its influence on phosphorus use efficiency by maize
Provedor de dados: 64
Autores: 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

Phosphorus availability in soil amended with biochar from rice rusk and cattle manure and cultivated with common bean
Provedor de dados: 64
Autores: Torres,William Gleidson Alves; Colen,Fernando; Pandey,Sugandha Dogra; Frazão,Leidivan Almeida; Sampaio,Regynaldo Arruda; Fernandes,Luiz Arnaldo.
ABSTRACT The soils of the Brazilian Savanna are generally acidic and have low availability of nutrients, so the use of alternative inputs to improve their fertility should be investigated. The objectives of this study were to evaluate the potential of biochars from rice husk (BHR) and from bovine manure (BCM) in increasing phosphorus availability and their effects on soil chemical properties and in common beans plants. The experiments were carried out in a completely randomized design, in a 4x2+3 factorial scheme with four replicates. The treatments were four biochar doses (1, 2, 3 and 4% m/v), two biochars (BRH and BCM) and three additional treatments (C1, no liming and no fertilization; C2, addition of Ca and Mg carbonate and NPK fertilizers and; C3,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil fertility; Pyrolysis; Phaseolus vulgaris L.; Silicon.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100232