Results 41 to 50 of about 4,544 (181)
Mineralogy and textural impact on beneficiation of goethitic ore
International Journal of Mining Science and Technology, 2017 The effect of mineralogy and texture on the beneficiation of goethitic ores from two different origins is highlighted. Sample A having 54.47% Fe with 8.57% loss of ignition (LOI) indicates the presence of vitreous and ochreous goethite, martite and ...
Shobhana Dey +2 more
doaj +1 more source
Kinetics of phosphorus sorption by goethite and kaolinite‐goethite (k‐g) system
Communications in Soil Science and Plant Analysis, 1998 Abstract Reactions between phosphate (PO4) and soils or soil components is quick at first. It then becomes slower and continues for long time without reaching any true equilibrium. Many kinetic equations have been used either to deduce the mechanisms or simply to summarise results of this continued removal of PO4 from solution.
Papadopoulos, P. +2 more
openaire +2 more sources
Magnetic and spectral signatures of Cerrado soils in the state of Goiás, Brazil [PDF]
Pesquisa Agropecuária Brasileira, 2017 : The objective of this work was to estimate the iron oxide contents (hematite and goethite) and to characterize the color and the spectral and magnetic signatures of Cerrado soils in the state of Goiás, Brazil.
Kathleen Lourenço Fernandes +4 more
doaj +1 more source
Advanced Science, EarlyView.Hydrogen‐driven iron oxide reduction, water‐iron corrosion, and hydrogen embrittlement of metallic iron share the same Fe‐O‐H chemistry. A general‐purpose Atomic Cluster Expansion potential covers this chemistry across the full concentration range with explicit Ising‐like treatment of magnetism.
Baptiste Bienvenu +5 more
wiley +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT The presence of antibiotics in water not only causes environmental pollution but also increases the growth of antibiotic‐resistant bacterial genes, which pose serious threats to human beings and other water residents. Large numbers of people are reportedly affected by the resistant bacterial genes, as many broad‐spectrum antibiotics are not ...
Amir Zada, Shohreh Azizi
wiley +1 more source
Adsorption Science & Technology, 2010 Batch experiments were conducted to study the effect of small organic acids (citric, oxalic and acetic) on the removal of phosphate anions from aqueous systems using synthesized goethite as the adsorbent.
Zhongliang Shi, Fang Li, Shuhua Yao
doaj +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
Nature Communications, 2021 Radicals-mediated Fenton chemistry has the potential for biomass valorization. Here, inspired from the natural goethite mineral, the authors develop a MnO2/goethite catalyst showing excellent yields of glycolic acid and formic acid from dihydroxyacetone,
Jinling Wang +8 more
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Geological Journal, EarlyView.Chemical states of Se and Br atoms in the KPg boundary sediments from Stevns Klint were studied using XAFS spectroscopy. The high concentrations of Se4+ could become an index of the degree to which the global environment was soiled with dust and ash derived from impact ejecta or volcanic eruptions.
Kei‐ichiro Murai +5 more
wiley +1 more source
Materials and Corrosion, EarlyView.The present study generated the corrosion performance of C‐steel, zinc, and galvanized steel in different global unsaturated soil environments for 2 years. Acceptable matching was observed between corrosion rates and identified corrosion products. To properly predict soil corrosion, the results showed that DIN 50929 should include a drainage‐capability
Abdelkader Meroufel +4 more
wiley +1 more source