Flax shive thermocatalytic processing

Sulman, Esther M.; Lugovoy, Yury V.; Chalov, K.V.; Kosivtsov, Yu. Yu.; Stepacheva, Аntonina A.; Shimanskaya, E. I.

doi:10.1063/1.4968068

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Our results suggest that the actual uncertainty related to soil carbon projections may be larger than previously realized. Todd-Brown et al (2013, 2014 reported a wider range of initial soil carbon stocks and trajectories over the 21 st century from an ensemble of CMIP5 models, but each of these models was forced with spatially varying and highly model-idiosyncratic climate and productivity estimates. By using a consistent forcing among models, our results better capture the variation in soil carbon stocks and their potential response to environmental change that is caused by different model assumptions,…”

Section: Discussionmentioning

confidence: 99%

“…Overlying terrestrial models generate additional variation in the biogeochemical and biophysical state upstream of the soil system-including uncertainties in climate, hydrology, and plant productivityand the potential ecosystem responses of these factors to perturbations (Todd-Brown et al, 2013, 2014. Although such considerations are critical for assessing the integrated terrestrial carbon cycle response to environmental change, they present unnecessary impediments to assessing the soil biogeochemical component of terrestrial models and advancing understanding of soil systems.…”

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confidence: 99%

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Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models

Wieder

Hartman

Sulman

et al. 2017

Global Change Biology

149

133

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Emerging insights into factors responsible for soil organic matter stabilization and decomposition are being applied in a variety of contexts, but new tools are needed to facilitate the understanding, evaluation, and improvement of soil biogeochemical theory and models at regional to global scales. To isolate the effects of model structural uncertainty on the global distribution of soil carbon stocks and turnover times we developed a soil biogeochemical testbed that forces three different soil models with consistent climate and plant productivity inputs. The models tested here include a first-order, microbial implicit approach (CASA-CNP), and two recently developed microbially explicit models that can be run at global scales (MIMICS and CORPSE). When forced with common environmental drivers, the soil models generated similar estimates of initial soil carbon stocks (roughly 1,400 Pg C globally, 0-100 cm), but each model shows a different functional relationship between mean annual temperature and inferred turnover times. Subsequently, the models made divergent projections about the fate of these soil carbon stocks over the 20 century, with models either gaining or losing over 20 Pg C globally between 1901 and 2010. Single-forcing experiments with changed inputs, temperature, and moisture suggest that uncertainty associated with freeze-thaw processes as well as soil textural effects on soil carbon stabilization were larger than direct temperature uncertainties among models. Finally, the models generated distinct projections about the timing and magnitude of seasonal heterotrophic respiration rates, again reflecting structural uncertainties that were related to environmental sensitivities and assumptions about physicochemical stabilization of soil organic matter. By providing a computationally tractable and numerically consistent framework to evaluate models we aim to better understand uncertainties among models and generate insights about factors regulating the turnover of soil organic matter.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models

Wieder

Hartman

Sulman

et al. 2017

Global Change Biology

149

133

View full text Add to dashboard Cite

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Influence of mass transfer and acid prehydrolysis on the process of flax shives catalytic oxidation into vanillin and pulp

Tarabanko

Vigul

Kaygorodov

et al. 2022

Biomass Conv. Bioref.

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Thermal Conversion of Flax Shives in Sub- and Supercritical Ethanol in the Presence of Ru/C Catalyst

et al. 2021

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Thermal conversion of flax shives was studied in sub- and supercritical ethanol medium at 225 and 250 °C in the presence of the bifunctional catalyst 3% Ru/C. The use of 3% Ru/C catalyst in the process of thermal conversion of flax shives in supercritical ethanol was found to increase the conversion of the shives by 27% and the yield of liquid products by 10%. The use of 3% Ru/C catalyst in sub- and supercritical ethanol led to the destruction of both lignin and cellulose. The degree of delignification in the non-catalytic thermal conversion increased upon transition from subcritical (225 °C) to supercritical (250 °C) conditions. Main monomeric products of the thermal conversion process were guaiacylpropene or guaiacylpropane depending on the process temperature. In the presence of Ru/C catalyst, the molecular weight distribution was shifted towards an increase in the content of monomeric compounds in the liquid products.

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Flax shive thermocatalytic processing

Cited by 3 publications

References 4 publications

Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models

Carbon cycle confidence and uncertainty: Exploring variation among soil biogeochemical models

Influence of mass transfer and acid prehydrolysis on the process of flax shives catalytic oxidation into vanillin and pulp

Thermal Conversion of Flax Shives in Sub- and Supercritical Ethanol in the Presence of Ru/C Catalyst

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