Results 21 to 30 of about 11,607 (259)
ISOLATION OF ORGANIC MATTER BY THE NAOH-HCL METHOD FROM TWO MARINE OIL SHALES USING OVEN AND SEALED AUTOCLAVE TECHNIQUES; pp. 197–213 [PDF]
Oil Shale, 2019 Organic matter (OM) was isolated from two marine oil shales, El-Lajjun and Julia Creek, using NaOH-HCl and humin and humic acid fracÂtions separated. Two treatments were required to reduce humin ash yield to below 11 wt% db.
JAMEEL S. ALJARIRI ALHESAN +5 more
doaj +1 more source
Molecules, 2023 The constant influx of pesticides into soils is a key environmental issue in terms of their potential retention in the soil, thus reducing their negative impact on the environment.
Aleksandra Ukalska‐Jaruga +10 more
semanticscholar +1 more source
Chemistry, 2023 This work reports a straightforward and high-yielding synthesis of alkyl levulinates (ALs), a class of promising biofuel, renewable solvent, and chemical feedstock of renewable origin.
Nivedha Vinod, Saikat Dutta
semanticscholar +1 more source
Influence of Impurities on the Electrochemical Upcycling of Biomass [PDF]
ChemSusChem5‐hydroxymethyl furfural (HMF) and furfural contain impurity levels that lie below the detection limit of common analysis techniques. Yet, these impurity levels have an adverse effect on the electrochemical conversion of these compounds. In this study, we show that distillation of furfural and recrystallization of HMF facilitates their electrochemical ...
Sobota L, Bondue C, Tschulik K.
europepmc +2 more sources
Spray Combustion Analysis of Humins [PDF]
SAE Technical Paper Series, 2017 <div class="section abstract"><div class="htmlview paragraph">Second generation biomass is an attractive renewable feedstock for transport fuels. Its sulfur content is generally negligible and the carbon cycle is reduced from millions to tens of years.
Feijen, J. +5 more
openaire +2 more sources
Degradative studies on a soil humin fraction—Sequential degradation of inherited humin [PDF]
Soil Biology and Biochemistry, 1987 Peer ...
Almendros Martín, Gonzalo +1 more
openaire +2 more sources
Ambient Temperature Self-Blowing Tannin-Humins Biofoams [PDF]
Polymers, 2020 Ambient temperature self-blowing tannin–furanic foams have been prepared by substituting a great part—even a majority—of furfuryl alcohol with humins, a polyfuranic material derived from the acid treatment at high temperature of fructose. Closed-cell foams were prepared at room temperature and curing, while interconnected-cell foams were prepared at 80
Xinyi Chen +6 more
openaire +2 more sources
Шахрайство у сучасному законодавстві деяких зарубіжних країн
Аналітично-порівняльне правознавство, 2023 Протягом останнього десятиліття у науці кримінального права виникла зацікавленість до порівняльно-правових досліджень. Суттєва зміна умов суспільного життя та прагнення дотримуватися принципів, прийнятих народами розвинутих країн, потребує вивчення ...
O. Humin
doaj +1 more source
Towards a radiocarbon chronology of the Late-Glacial: Sample selection strategies [PDF]
, 2001 This paper outlines a dating program designed to test the reproducibility of radiocarbon dates on different materials of Late-Glacial age (plant macrofossils, fossil beetle remains, and the "humic" and "humin" chemical fractions of limnic sediments ...
Bengtsson +14 more
core +1 more source
Synthesis of Humin-Phenol-Formaldehyde Adhesive [PDF]
Polymers, 2017 Humins are low-value-added byproducts from the biomass acid hydrolysis process. In the present work, humins were first employed as a phenol replacement for synthesis of modified phenol-formaldehyde adhesives through a two-step process. In this process, humins were first utilized to obtain alkaline soluble products, mainly consisting of phenolics ...
Kang, Shimin +5 more
openaire +2 more sources