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Changes in Soil Humin Macromolecular Structure Resulting from Long-Term Catch Cropping [PDF]

open access: yesMolecules
The aim of this study was to assess the effect of long-term catch crop application on the structural properties of humin, which is considered the most recalcitrant fraction of soil organic matter. Soil samples from a 30-year field experiment on triticale
Jerzy Weber   +8 more
doaj   +3 more sources

Promotion of Nitrogen Fixation of Diverse Heterotrophs by Solid-Phase Humin [PDF]

open access: yesFrontiers in Microbiology, 2022
Although biological nitrogen fixation (BNF) proceeds under mild conditions compared to the energy-intensive Haber–Bosch process, the slow kinetics of BNF necessitate the promotion of BNF activity in its practical application.
Sujan Dey   +5 more
doaj   +3 more sources

Computational survey of humin formation from 5-(hydroxymethyl)furfural under basic conditions. [PDF]

open access: yesRSC Adv, 2023
A comprehensive reaction-path search for the oligomerization of 5-(hydroxymethyl)furfural (HMF) based on quantum chemical calculations was conducted to clarify the mechanism of humin formation in the oxidation of HMF to furan-2,5-dicarboxylic acid (FDCA),
Tashiro K   +3 more
europepmc   +2 more sources

Humin Formation on SBA-15-pr-SO3H Catalysts during the Alcoholysis of Furfuryl Alcohol to Ethyl Levulinate: Effect of Pore Size on Catalyst Stability, Transport, and Adsorption. [PDF]

open access: yesACS Appl Mater Interfaces, 2023
Herein, the alcoholysis of furfuryl alcohol in a series of SBA-15-pr-SO3H catalysts with different pore sizes is reported. Elemental analysis and NMR relaxation/diffusion methods show that changes in pore size have a significant effect on catalyst ...
Di Carmine G   +9 more
europepmc   +2 more sources

Urease and β-glucosidase activity enhanced the transformation of functional groups of humin amended by straw and straw-derived biochar

open access: yesChemical and Biological Technologies in Agriculture, 2022
Background Organic materials carbon is mainly sequestrated in humin. However, the carbon (C) stability of humin with organic materials amendments in different types of soils is mainly affected by organic materials or soil types as well as the enzymatic ...
Xinwei Liu   +7 more
doaj   +2 more sources

Renewable synthesis of γ-butyrolactone from biomass-derived 2-furanone using palladium supported on humin-derived activated carbon (Pd/HAC) as a heterogeneous catalyst. [PDF]

open access: yesRSC Adv, 2023
This work reports a high-yielding synthesis of γ-butyrolactone (GBL), a promising biofuel, renewable solvent, and sustainable chemical feedstock, by the catalytic hydrogenation of 2-furanone.
Vinod N, Dutta S.
europepmc   +2 more sources

Humin oxidation drives microbial dehalogenation in oligotrophic environments. [PDF]

open access: yesISME J
Energy acquisition presents a fundamental constraint for microbial survival in oligotrophic environments. Although heterotrophic organohalide-respiring bacteria (OHRB) are known to perform reductive dehalogenation in organohalide-contaminated ...
Zhang Z   +8 more
europepmc   +2 more sources

Integrated Humin Formation and Separation Studied In Situ by Centrifugation. [PDF]

open access: yesACS Omega
We present a novel method for studying the integrated formation and separation of humins formed during the Brønsted acid-catalyzed conversion of fructose (here, at 90 °C with 20 wt % fructose and 5 wt % sulfuric acid).
Echtermeyer AWW, Viell J.
europepmc   +2 more sources

Promotion of biological nitrogen fixation activity of an anaerobic consortium using humin as an extracellular electron mediator

open access: yesScientific Reports, 2021
Nitrogen fertiliser is manufactured using the industrial Haber–Bosch process, although it is extremely energy-consuming. One sustainable alternative technology is the electrochemical promotion of biological nitrogen fixation (BNF). This study reports the
Sujan Dey   +6 more
doaj   +2 more sources

Humin-sulfuric acid as a novel recoverable biocatalyst for pyrrole synthesis in water [PDF]

open access: yesBMC Chemistry
Humin-sulfuric acid (Humin-SO3H) as a novel efficient biobased sulfonic acid was easily prepared by adding chlorosulfuric acid (ClSO3H) to Humin and characterized by potentiometric titration and FT-IR spectrum.
Mandana Armin   +2 more
doaj   +2 more sources

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