Results 51 to 60 of about 11,716 (244)
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source
Experimental methods in chemical engineering: Magnetometry
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Magnetometry is a non‐invasive technique to characterize the behaviour of magnetic materials of which the most common contain Fe, Co, and Ni. Vibrating sample magnetometers (VSMs) vibrate samples at a fixed frequency in a static, homogeneous magnetic field to induce a voltage in pick up coils according to Faraday's law of induction.
Michael Claeys +3 more
wiley +1 more source
ChemSusChem, Volume 18, Issue 6, March 15, 2025.The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr +4 more
wiley +1 more source
The Scientific World Journal, 2013 A facile and economic route has been presented for mass production of micro/nanostructured hematite microcrystals based on the wet chemical controllable method.
Chengliang Han +3 more
doaj +1 more source
The self-carrier effect of hematite in the flotation
工程科学学报, 2019 Finely disseminated iron ores are a type of refractory iron ores that exist in many regions in China, where fine grind is essential to liberate iron minerals from gangue.
Dong LI +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Synthesis and Applications of Hematite α-Fe2O3 : a Review
Journal of Mechanical Engineering Science and Technology, 2019 This article reviewed the hematite α-Fe2O3, which focuses on its material properties, nanostructures, synthesis techniques, and its numerous applications.
Muhamad Muhajir +2 more
doaj +1 more source
Integrating Cu2O and Fe2O3 Dual Photoelectrodes Into a Solar Rechargeable Flow Battery
EcoEnergy, EarlyView.This work presents a solar rechargeable flow battery using protected Cu2O and Fe2O3 dual photoelectrodes and Fe(BPMG)2(II/III) and Fe2+/Fe3+ redox couples. The device enables bias‐free charging and delivers an output voltage of 0.62 V and a solar‐to‐output electricity efficiency of approximately 0.11%. ABSTRACT Solar rechargeable flow batteries (SRFBs),
Junzhe Pei +6 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Bimetallic Cu and Fe oxide species supported on porous silica with interparticle mesoporosity act as efficient photo‐Fenton‐like catalysts under visible light. Photogenerated electrons drive the Cu2+/Cu1+ redox cycle. Part of Cu1+ is responsible for the regeneration of the Fe3+/Fe2+ cycle at neutral pH. Light irradiation additionally induces structural
Andraž Šuligoj +6 more
wiley +1 more source
High‐Pressure Transformations and Stability of Ferromagnesite in the Earth's Mantle
Geophysical Monograph Series, Page 105-113., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Eglantine Boulard +2 more
wiley +2 more sources