Results 1 to 10 of about 2,511,565 (201)

From Critical Raw Materials to Circular Raw Materials. [PDF]

open access: yesChemSusChem
AbstractThis perspective addresses the key challenge of advancing the use of Critical Raw Materials (CRMs) and proposes a transition towards circular raw material management. In the context of our current economy, the unsustainable consumption, environmental degradation, geopolitical risks, and economic vulnerabilities associated with CRMs highlight ...
van Gaalen JM, Chris Slootweg J.
europepmc   +4 more sources

Leaching of polymetallic Cu-Zn-Pb concentrate with sodium nitrate in sulphuric acid [PDF]

open access: yesTehnika, 2021
The results of polymetallic sulphide Cu-Zn-Pb concentrate leaching with sulphuric acid in the presence of sodium nitrate as an oxidizing agent, at atmospheric pressure, are presented and discussed.
Sokić Miroslav D.   +6 more
doaj   +1 more source

To what extent do soft mechanical activation and process parameters increase the efficiency of different zeolite/phosphate rock fertilizer mixtures? [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2017
In order to obtain effective mineral fertilizer, different mixtures of phosphate rock (PR) with natural clinoptilolite (Cp) and NH4+ saturated clinoptilolite (NH4-Cp) were subjected to soft mechanical activation.
Mihajlović Marija   +6 more
doaj   +1 more source

The possibilities of obtaining metallic calcium from Serbian carbonate mineral raw materials [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2014
The experimental investigations defined both the technological scheme of the calcium production from limestone by aluminothermic process and the basic operating parameters of the particular technological phases.
Sokić Miroslav   +6 more
doaj   +1 more source

Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar [PDF]

open access: yesHemijska Industrija, 2023
Peach stones, a valuable agro-industrial by-product available in many countries worldwide, comprise a renewable resource, which can be widely applied for multifunctional purposes.
Lopičić Zorica   +6 more
doaj   +1 more source

Toxicology assessment of manganese oxide nanomaterials with enhanced electrochemical properties using human in vitro models representing different exposure routes

open access: yesScientific Reports, 2022
In the present study, a comparative human toxicity assessment between newly developed Mn3O4 nanoparticles with enhanced electrochemical properties (GNA35) and their precursor material (Mn3O4) was performed, employing different in vitro cellular models ...
Natalia Fernández-Pampín   +8 more
doaj   +1 more source

Influence of pH value on Cu (II) biosorption by lignocellulose peach shell waste material [PDF]

open access: yesHemijska Industrija, 2013
In the last decade, the pollution made by anthropogenic sources has reached large amounts with special attention on heavy metals because of their high toxicity, persistence and bioaccumulation tendency.
Lopičić Zorica R.   +6 more
doaj   +1 more source

Effects of bentonite binder dosage on the properties of green limestone pellets [PDF]

open access: yesHemijska Industrija, 2017
This paper presents the results of tests carried out to determine how the dosage of bentonite added as binder, affects the properties of green pellets made of the limestone fines that originate from Lithothamnium limestone processing. Bentonite was added
Jovanović Vladimir D.   +9 more
doaj   +1 more source

Synthesis of sodium silicate crystals from rice husk ash [PDF]

open access: yesJournal of the Serbian Chemical Society, 2023
The rich husk is an agricultural waste of rice cultivation worldwide, which is highly rich in amorphous silica. Rice husk obtained from Dagiri was pyrolyzed at 750ºC to give white ash (RHA) which was further treated with acid (ARHA).
Emmanuel Stella Adedunni   +7 more
doaj   +1 more source

The possibilities of atmospheric plasma-spraying application to obtain hydroxyapatite coatings on the stainless steel samples [PDF]

open access: yesHemijska Industrija, 2013
For decades, the standard metallic materials for hip implants, besides the 316LVM stainless steel, were titanium- and cobalt/chromium-based alloys. Although bioinert, due to their corrosion resistance, they are not biocompatible.
Mihailović Marija D.   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy