Production and characterization of synthetic wood chars for use as surrogates for natural sorbents

Brown, R. A.; Kercher, Andrew K.; Nguyen, Thanh H.; Nagle, Dennis C.; Ball, William P.

doi:10.1016/j.orggeochem.2005.10.008

Cited by 309 publications

(162 citation statements)

References 54 publications

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“…Besides the porosity, characteristic related to the hygroscopicity of coal, is positively correlated with the final carbonization temperature ( Figure 2D), this same behavior was observed by Brown et al (2006), Yu et al (2006) and Bergeron et al (2013).…”

Section: Gravimetric Yields and Charcoal Analysissupporting

confidence: 81%

“…The obtained results indicate that the moisture of samples conditioned in the atmosphere with 98% of RH showed behavior inversely proportional to the structure during charcoal production (SOMERVILLE;JAHANSHAHI, 2015;BROWN et al, 2006). Besides the porosity, characteristic related to the hygroscopicity of coal, is positively correlated with the final carbonization temperature ( Figure 2D), this same behavior was observed by Brown et al (2006), Yu et al (2006) and Bergeron et al (2013).…”

Section: Gravimetric Yields and Charcoal Analysissupporting

confidence: 74%

“…The carbonization at high temperatures has enabled the unclogging pores by volatilization of the residual tar, increasing the porous area of the charcoal (BROWN et al, 2006). The porosity increased due to the reduction of the apparent density of charcoal, since the true density is relatively independent of carbonization (SOMERVILLE; JAHANSHAHI, 2015).…”

Section: Gravimetric Yields and Charcoal Analysismentioning

confidence: 99%

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Higroscopicity of Charcoal Produced in Different Temperatures

Júnior¹,

Pirola²,

Takeshita³

et al. 2016

CERNE

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This research aimed to evaluate hygroscopicity of charcoal produced under four different final carbonization temperatures. For evaluation of hygroscopicity charcoal samples were conditioned in environments with controlled temperature and relative humidity, using saturated salt solutions. The final carbonization temperature significantly influenced the products yields and the properties of charcoal. The charcoal produced in the final temperature of 750 °C showed the highest adsorption capacity of water, indicated by the moisture content after conditioning, in the higher relative humidity environment. Correlations were observed between adsorbed moisture and the porosity of charcoal produced. HIGROSCOPICIDADE DO CARVÃO VEGETAL PRODUZIDO EM DIFERENTES TEMPERATURASRESUMO: Este estudo teve por objetivo analisar a higroscopicidade do carvão vegetal produzido em quatro diferentes temperaturas finais de carbonização. Para avaliação da higroscopicidade as amostras de carvão vegetal foram acondicionadas em ambientes com temperatura e umidade relativa controladas, utilizando-se soluções salinas saturadas. Os rendimentos dos produtos da carbonização e as características do carvão vegetal foram significativamente influenciados pelas temperaturas finais de carbonização. O carvão vegetal produzido sob a temperatura final de 750 ºC apresentou a maior capacidade de adsorção de água, indicada pela umidade após o acondicionamento. Verificaram-se correlações entre a umidade adsorvida e a porosidade do carvão vegetal produzido.

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Section: Gravimetric Yields and Charcoal Analysissupporting

confidence: 81%

Section: Gravimetric Yields and Charcoal Analysissupporting

confidence: 74%

Section: Gravimetric Yields and Charcoal Analysismentioning

confidence: 99%

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Higroscopicity of Charcoal Produced in Different Temperatures

Júnior¹,

Pirola²,

Takeshita³

et al. 2016

CERNE

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“…Sorption of hydrophobic organic compounds (HOCs) on BC is up to 10-1000 times greater than that of soil organic matter (Cornelissen et al, 2005). BC has been reported to limit the availability of HOCs (Thorsen et al, 2004;Moermond et al, 2005;Brown et al, 2006). Therefore, it is considered as a cost-effective material for controlling the fate and remediation of anthropogenic contaminants (Koelmans et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of humic acid and lipid on the sorption of phenanthrene on char

Wen

Huang

et al. 2009

Geoderma

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“…Nevertheless, the full range of associated implications of biochar addition to soils has not yet been comprehensively quantified (Verheijen et al, 2010). For instance, the prospect of widespread incorporation of biochar into soil warrants concern over the potential for soil contamination associated to specific biochar components, which are known for their environmental persistence or potential toxicity to biota, such as polycyclic aromatic hydrocarbons (PAHs) and metals (Pakdel & Roy, 1991;Fernandes & Brooks, 2003;Bridle & Prichard, 2004;Brown et al, 2006;Gaskin et al, 2008). Since these compounds in certain biochars are linked primarily to type of feedstock and pyrolysis temperature, a tight control over such processing parameters may decrease the associated possibility for environmental risk.…”

Section: Introductionmentioning

confidence: 99%

Sustainability, certification, and regulation of biochar

Verheijen

Montanarella

Bastos

2012

Pesq. agropec. bras.

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-Biochar has a relatively long half-life in soil and can fundamentally alter soil properties, processes, and ecosystem services. The prospect of global-scale biochar application to soils highlights the importance of a sophisticated and rigorous certification procedure. The objective of this work was to discuss the concept of integrating biochar properties with environmental and socioeconomic factors, in a sustainable biochar certification procedure that optimizes complementarity and compatibility between these factors over relevant time periods. Biochar effects and behavior should also be modelled at temporal scales similar to its expected functional lifetime in soils. Finally, when existing soil data are insufficient, soil sampling and analysis procedures need to be described as part of a biochar certification procedure.Index terms: ecosystem services, environmental risk, functional lifetime, geoengineering, heterogeneity, public policy. Sustentabilidade, certificação e regulamentação do "biochar"Resumo -O "biochar" tem um tempo de meia-vida no solo relativamente longo e pode alterar substancialmente as propriedades, processos e funções do solo. A perspectiva da aplicação de "biochar" aos solos, em escala global, evidencia a importância de se lhe atribuir um processo de certificação sofisticado e rigoroso. O objetivo deste trabalho foi discutir o conceito da integração das propriedades do "biochar" com os fatores ambientais e socioeconômicos relevantes do local de aplicação selecionado, como parte de um procedimento de certificação sustentável que otimize a complementaridade e a compatibilidade entre esses fatores, em períodos de tempo relevantes. Os efeitos e o comportamento do "biochar" devem, também, ser modelados em escalas temporais similares às de seu tempo de vida funcional nos solos do local selecionado. Finalmente, onde os dados existentes sobre as características do solo forem insuficientes, procedimentos de amostragem e análise do solo devem ser descritos como parte do procedimento de certificação do "biochar".Termos para indexação: serviços ambientais, risco ambiental, tempo de vida funcional, geoengenharia, heterogeneidade, políticas públicas.

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Production and characterization of synthetic wood chars for use as surrogates for natural sorbents

Cited by 309 publications

References 54 publications

Higroscopicity of Charcoal Produced in Different Temperatures

Higroscopicity of Charcoal Produced in Different Temperatures

Effects of humic acid and lipid on the sorption of phenanthrene on char

Sustainability, certification, and regulation of biochar

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