Results 61 to 70 of about 292,470 (358)

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

open access: yesBiotechnology for Biofuels and Bioproducts, 2022
Lignin is a promising alternative to traditional fossil resources for producing biofuels due to its aromaticity and renewability. Pyrolysis is an efficient technology to convert lignin to valuable chemicals, which is beneficial for improving lignin ...
Xinyu Lu, Xiaoli Gu
doaj   +1 more source

Numerical investigation of microwave-assisted pyrolysis of lignin [PDF]

open access: yes, 2016
A comprehensive three-dimensional mathematical model is developed for studying the microwave-assisted pyrolysis of biomass. Kraft Lignin is considered as biomass feedstock in the model, and a mixture of lignin and char, is used as the sample for ...
Fidalgo Fernandez, Beatriz   +2 more
core   +1 more source

The determination of lignin [PDF]

open access: yesBritish Journal of Nutrition, 1967
1. The methods for estimating lignin based on 72% sulphuric acid are lengthy and usually require large corrections for the residual nitrogenous impurities. The steps used in the initial purification of lignin, and particularly those concerned with the removal of nitrogenous impurities using proteolytic enzymes, have been investigated.2.
openaire   +2 more sources

Synthesis and characterization of cotton fiber-based nanocellulose [PDF]

open access: yesInt J Biol Macromol. (2018), 109, pp.832-836, 2019
Nanocellulose prepared from the natural material has a promising wide range of opportunities to obtain the superior material properties towards various end-products. In this research, commercially available natural cotton was treated with aqueous sodium hydroxide solution to eliminate the hemicellulose and lignin, then cellulose was collected.
arxiv   +1 more source

Chemical genetics uncovers novel inhibitors of lignification, including p-iodobenzoic acid targeting CINNAMATE-4-HYDROXYLASE [PDF]

open access: yes, 2016
Plant secondary-thickened cell walls are characterized by the presence of lignin, a recalcitrant and hydrophobic polymer that provides mechanical strength and ensures long-distance water transport.
Audenaert, Dominique   +9 more
core   +2 more sources

Current Understanding of Feather Keratin and Keratinase and Their Applications in Biotechnology

open access: yesBiochemistry Research International
The food industry generates substantial keratin waste, particularly chicken feathers, which are rich in amino acids and essential nutrients. However, the insolubility of keratin presents a significant challenge to its conversion.
Thanakorn Moktip   +5 more
doaj   +1 more source

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

open access: yesAdvanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe   +7 more
wiley   +1 more source

Electrochemical Biorefinery toward Chemicals Synthesis and Bio-Oil Upgrading from Lignin

open access: yesEngineering, 2023
Recalcitrance and the inherent heterogeneity of lignin structure are the major bottlenecks to impede the popularization of lignin-based chemicals production processes.
Rui Hu   +7 more
doaj  

Shape‐Stabilization of Phase Change Materials with Carbon‐Conscious Poly(hydroxy)Urethane Foams

open access: yesAdvanced Functional Materials, EarlyView.
Poly(hydroxy)urethane (PHU) foam, derivable from carbon dioxide (CO2) and bio‐based resources, is a promising material platform for shape‐stabilizing phase change materials (PCMs). We demonstrate the encapsulation of both paraffins and calcium chloride hexahydrate in PHU foam, achieving 48 stable thermal cycles by introducing 5 wt.% barium carbonate ...
Minjung Lee   +5 more
wiley   +1 more source

Characterization and Separation of Lignin from Kraft Black Liquor with Different Alcohols

open access: yesDrvna Industrija, 2022
The aim of this study was to investigate the properties of lignin obtained from black liquors of Scots pine (Pinus sylvestris L.) and European aspen (Populus tremula L.) woods cooked by Kraft method.
Ayhan Gençer   +3 more
doaj   +1 more source

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