Results 1 to 10 of about 11,341,383 (352)

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   +5 more sources

Development of Raw Materials and Technology for Pulping-A Brief Review. [PDF]

open access: yesPolymers (Basel), 2023
Paper is one of the most significant inventions in human civilization, which considerably advanced global cultural development. Pulping is a key step in the conversion of fiber raw materials into paper.
Li P   +5 more
europepmc   +2 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

Understanding Rare Earth Elements as Critical Raw Materials

open access: yesSustainability, 2023
The boom in technological advances in recent decades has led to increased demand for rare earth elements (REEs) (also known as rare earth metals) across various industries with wide-ranging industrial applications, including in the clean energy sector ...
W. Leal Filho   +5 more
semanticscholar   +1 more source

Agricultural Residues as Raw Materials for Pulp and Paper Production: Overview and Applications on Membrane Fabrication

open access: yesMembranes, 2023
The need for pulp and paper has risen significantly due to exponential population growth, industrialization, and urbanization. Most paper manufacturing industries use wood fibers to meet pulp and paper requirements. The shortage of fibrous wood resources
Limenew Abate Worku   +4 more
semanticscholar   +1 more source

Challenges and opportunities of the European Critical Raw Materials Act

open access: yesMineral Economics, 2023
The Critical Raw Materials Act (CRMA) is an essential regulatory framework designed to address the pressing challenges faced by the European Union (EU) in the strategic sectors of decarbonization, digitalization, and aerospace and defense.
Alessandra Hool   +2 more
semanticscholar   +1 more source

A Digital Product Passport for Critical Raw Materials Reuse and Recycling

open access: yesSustainability, 2023
The reuse and recycling of critical raw materials is limited, as waste electrical and electronic recycling focuses on base and precious metals, and device component reuse is in its infancy. To help to address this issue this paper provides the conceptual
R. Koppelaar   +13 more
semanticscholar   +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

Home - About - Disclaimer - Privacy