Results 21 to 30 of about 23,214 (252)
Dissolution of kraft lignin in alkaline solutions [PDF]
International Journal of Biological Macromolecules, 2020 Lignins are among the most abundant renewable resources on the planet. However, their application is limited by the lack of efficient dissolution and extraction methodologies. In this work, a systematic and quantitative analysis of the dissolution efficiency of different alkaline-based aqueous systems (i.e.
Melro, Elodie +6 more
openaire +3 more sources
Preparation and Characterization of Lignin Polyols from the Residues of Oil Palm Empty Fruit Bunch
BioResources, 2015 In this work, lignin polyols were prepared from the liquefaction of kraft lignin and from the direct liquefaction of Elaeis guineensis lignocellulosic waste. The liquefaction reaction was performed with polyhydric alcohols using sulfuric acid as catalyst
Abbas Hasan Faris +4 more
doaj +1 more source
Comparison of Py-GC/FID and Wet Chemistry Analysis for Lignin Determination in Wood and Pulps from Eucalyptus globulus [PDF]
, 2013 The kraft pulps produced from heartwood and sapwood of Eucalyptus globulus at 130 degrees C, 150 degrees C, and 170 degrees C were characterized by wet chemistry (total lignin as sum of Klason and soluble lignin fractions) and pyrolysis (total lignin ...
Gominho, Jorge +3 more
core +1 more source
Kraft Lignin Behaviour in Diffused Aeration of Kraft Effluents
Water Science and Technology, 1988 Diffused aeration experiments carried out using a Kraft black liquor in batch reactors at 21±1ΩC were performed in order to characterize the relative importance of the mechanisms of chemical oxidation and condensation of lignin structures upon COD, lignin and colour removal and also to evaluate the influence of agitation intensity on these mechanisms ...
L. Larrea, C.F. Forster, D. Melé
openaire +1 more source
Copper Adsorption on Lignin for the Removal of Hydrogen Sulfide
Molecules, 2020 Lignin is currently an underutilized part of biomass; thus, further research into lignin could benefit both scientific and commercial endeavors. The present study investigated the potential of kraft lignin as a support material for the removal of ...
Miroslav Nikolic +5 more
doaj +1 more source
Fermentation, 2023 Producing polyhydroxyalkanoate (PHA) from lignin through biological conversion has great further potential, but is held by its high heterogeneous characteristic toxicity of the depolymerized products, and low bioconversion of the depolymerized products ...
Xiao Fu +7 more
doaj +1 more source
The Use of Cationites in the Modification of Kraft Lignin with Nitrous Acid
Лесной журналKraft lignin is the largest-tonnage technical lignin formed during kraft pulp cooking. According to statistics, approximately 70 mln t of such waste are generated annually.
Yuriy G. Khabarov +3 more
doaj +1 more source
SYNTHESIS AND CHARACTERIZATION OF KRAFT LIGNIN-BASED EPOXY RESINS [PDF]
BioResources, 2011 Epoxidization is an interesting way to develop a new application of lignin and therefore to improve its application potential. In this work, kraft lignin-based epoxy resins were obtained by the epoxidization reaction, using the kraft lignin recovered ...
Nour Eddine El Mansouri +2 more
doaj
Performance of Ceriporiopsis SP. in the Treatment of Black Liquor Wastewater [PDF]
, 2016 High amounts of black liquor wastewater are generated from bioethanol production by using oil palm empty fruit bunches. It contains an alkaline solution (NaOH), so it is quite toxic for aquatic ecosystems if discharged directly into waters.
Sari, A. A. (Ajeng)
core +1 more source
Using Lignin and Tannin as Green Corrosion Inhibitors for Carbon Steel Petrolum Tanks [PDF]
BIO Web of ConferencesThe best strategy for combating corrosion is verified by recent studies that employ organic green corrosion inhibitors isolated from plant extracts that are biodegradable, environmentally friendly, suitable priced, and safe.
Faris Abbas Hasan +4 more
doaj +1 more source