Prospective life cycle carbon abatement for pyrolysis biochar systems in the UK

Hammond, Jim; Shackley, Simon; Sohi, Saran; Brownsort, Peter

doi:10.1016/j.enpol.2011.02.033

Cited by 182 publications

(162 citation statements)

References 32 publications

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“…Biochar is admitted as a valuable tool for carbon abatement increasingly, with pyrolysis-biochar systems potentially offering greater carbon-equivalent gain than bioenergy only [1]. biochar may offer additional benefits to soil fertility [2].…”

Section: Introductionmentioning

confidence: 99%

Ageing of rice husk biochar along a freeze-thaw cycles

et al. 2016

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Abstract. In order to elucidate the aging possess of biochar, the experiment with treatment biochar with soil were performed. For accelerating aging process, freeing-thawing cycle were conducted to simulate the changing process of the physical and chemical properties of biochar and explore the roles of biochar in the changes of the soil nutrition. Aging treatment has a significant impact on the physical and chemical properties of biochar. The pH values, element composition, oxidation of the surface, absorption capacity of biochar changed in the ageing process. In the simulation test of freeze-thaw cycles, pH of biochar displayed upward trend after the first decline in 25 cycles, and then return to the initial level, indicating that the pH of biochar is not easy to change. Biochar surface oxidation occurs rapidly and significantly in the early, and then stabilized in the latter stage. Surface oxidation degree is higher than the whole. The results showed that surface oxide of biochar protect the internal particles from further oxidation. In the first 25 freeze-thaw cycles, adsorption capacity of biochar to hydroquinone changes from the 5.928 mg.g-1 to 11.73 mg.g -1 , indicating that freeze-thaw cycle treatment increase adsorption capacity of biochar.

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Section: Introductionmentioning

confidence: 99%

Ageing of rice husk biochar along a freeze-thaw cycles

et al. 2016

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“…The contributions of organic matter stabilization, avoided nitrous oxide emissions from soil, avoided methane emissions from landfill, and displacement of fossil fuel emissions vary between alternative scenarios, and are highly dependent on the assumptions employed (Wu et al, 2008;Gaunt & Cowie, 2009;Roberts et al, 2010;Hammond et al, 2011). The total abatement value can be greater than the CO 2 sequestered in biomass, and can be greater than if the biomass was used solely for bioenergy (Woolf et al, 2010;Hammond et al, 2011).…”

Section: Ghg Impacts Across the Biochar Life Cyclementioning

confidence: 99%

“…LCA studies have estimated net emissions reduction for different biochar scenarios at 0.7-3.1 Mg CO 2 -e per Mg (dry) feedstock, if indirect land use change is omitted (Gaunt & Cowie, 2009;Roberts et al, 2010;Hammond et al, 2011). However, where purpose-grown biomass is used for biochar, and indirect land use change is assumed to occur, the benefits are reduced, and emissions could even be increased (Roberts et al, 2010).…”

Section: Ghg Impacts Across the Biochar Life Cyclementioning

confidence: 99%

“…The major contribution to abatement arises from carbon storage in the biochar (Roberts et al, 2010;Hammond et al, 2011). The contributions of organic matter stabilization, avoided nitrous oxide emissions from soil, avoided methane emissions from landfill, and displacement of fossil fuel emissions vary between alternative scenarios, and are highly dependent on the assumptions employed (Wu et al, 2008;Gaunt & Cowie, 2009;Roberts et al, 2010;Hammond et al, 2011).…”

Section: Ghg Impacts Across the Biochar Life Cyclementioning

confidence: 99%

“…LCA has been widely employed to assess the climate change impacts of bioenergy systems (Cherubini et al, 2009;Cherubini, 2010). Several studies employing LCA or partial LCA approaches have been used to quantify the climate change impacts of biochar production and use (Gaunt & Cowie, 2009;Roberts et al, 2010;Woolf et al, 2010;Hammond et al, 2011). LCA assesses the GHG emissions and sequestration across the biochar life cycle including aspects highlighted in the previous sections -such as changes in soil and biomass carbon stocks due to procurement of biomass; fossil fuel use in harvesting, processing, transport and application of biochar; and indirect emissions such as from fertilizer manufacture.…”

Section: Ghg Impacts Across the Biochar Life Cyclementioning

confidence: 99%

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Is sustainability certification for biochar the answer to environmental risks?

Cowie

Downie²,

George³

et al. 2012

Pesq. agropec. bras.

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-Biochar has the potential to make a major contribution to the mitigation of climate change, and enhancement of plant production. However, in order for biochar to fulfill this promise, the industry and regulating bodies must take steps to manage potential environmental threats and address negative perceptions. The potential threats to the sustainability of biochar systems, at each stage of the biochar life cycle, were reviewed. We propose that a sustainability framework for biochar could be adapted from existing frameworks developed for bioenergy. Sustainable land use policies, combined with effective regulation of biochar production facilities and incentives for efficient utilization of energy, and improved knowledge of biochar impacts on ecosystem health and productivity could provide a strong framework for the development of a robust sustainable biochar industry. Sustainability certification could be introduced to provide confidence to consumers that sustainable practices have been employed along the production chain, particularly where biochar is traded internationally.Index terms: climate change, life cycle assessment, risk management, sustainable land management.A certificação de sustentabilidade do "biochar" é a resposta para os riscos ambientais?Resumo -O "biochar" tem potencial para dar uma importante contribuição para a mitigação das mudanças climáticas e para o aumento da produção vegetal. No entanto, para que o "biochar" possa atender a esta expectativa, a indústria e os organismos reguladores devem seguir alguns passos para gerenciar as potenciais ameaças ambientais e abordar as percepções negativas. As ameaças potenciais à sustentabilidade dos sistemas de "biochar", para cada estágio de seu ciclo de vida foram revisadas. Nós propomos que a estrutura da sustentabilidade para o "biochar" poderia ser adaptada de estruturas já existentes, desenvolvidas para a bioenergia. Políticas de uso sustentável da terra, combinadas com a regulação efetiva das instalações de produção do "biochar" e incentivos para a utilização eficiente de energia, além do conhecimento aperfeiçoado dos impactos do "biochar" na saúde e na produtividade do ecossistema, poderiam fornecer uma estrutura robusta para o desenvolvimento de uma indústria sustentável de "biochar". A certificação de sustentabilidade poderia ser introduzida, para proporcionar confiança aos consumidores de que práticas sustentáveis foram empregadas ao longo da cadeia de produção, particularmente onde o "biochar" é comercializado internacionalmente.Termos para indexação: mudanças climáticas, avaliação do ciclo de vida, gerenciamento de risco, gerenciamento sustentável da terra.

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Biochar and Carbon Sequestration

Mašek¹

2013

Fire Phenomena and the Earth System

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Prospective life cycle carbon abatement for pyrolysis biochar systems in the UK

Cited by 182 publications

References 32 publications

Ageing of rice husk biochar along a freeze-thaw cycles

Ageing of rice husk biochar along a freeze-thaw cycles

Is sustainability certification for biochar the answer to environmental risks?

Biochar and Carbon Sequestration

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