Results 41 to 50 of about 8,245 (240)

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, Adriana Aparecida Ribon, José Marques Junior, Angélica Santos Rabelo de Souza Bahia, João Tavares Filho   +4 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., Dimirkou, A., Ioannou, A.   +2 more
openaire   +2 more sources

Synergistic Advanced Oxidation and Physicochemical Treatment Strategies for Antibiotic Removal and Resistance Mitigation in Water

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

7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Effect of Small Organic Acid Anions on the Adsorption of Phosphate Anions onto Synthetic Goethite from Aqueous Solution

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

Light‐Induced Structural Reorganization of Fe Centers Unlocks High Efficiency of Visible‐Light Photo‐Fenton Water Cleaning Catalyst

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, Ksenija Maver, Iztok Arčon, Goran Dražić, Nataša Zabukovec Logar, Albin Pintar, Nataša Novak Tušar   +6 more
wiley   +1 more source

Effects of Iron Minerals on the Compressive Strengths and Microstructural Properties of Metakaolin-Based Geopolymer Materials

Gels, 2022
The current study aims to investigate the influence of iron minerals on the amorphous phase content, compressive strengths and the microstructural properties of the geopolymer materials.
Dimace Lionel Vofo Ngnintedem, Marco Lampe, Hervé Kouamo Tchakouté, Claus Henning Rüscher   +3 more
doaj   +1 more source

Interaction Between Nitrogen Forms, Phosphorus Forms, and Mineral Phases Drives Phosphorus Limitation and Uptake by Ryegrass in a Model System

Journal of Plant Nutrition and Soil Science, EarlyView.
Nitrogen addition shifts plant nutrition from nitrogen to phosphorus (P) limitation. Nitrate‐based nitrogen enhances P acquisition more effectively than ammonium through increased phosphatase activity, independently of pH changes. Organic P forms induce stronger P limitation than inorganic P.
Issifou Amadou, Michel‐Pierre Faucon, Josep Peñuelas, Jordi Sardans, David Houben   +4 more
wiley   +1 more source

Mineralogical and Geochemical Constraints of the REE Accumulation in the Almásfüzitő Red Mud Depository in Northwest Hungary

Applied Sciences, 2019
Detailed mineralogical and geochemical study of red mud samples from Hungary suggests geological and geochemical processes that determine the spatial distribution of certain elements inside the red mud pitfalls. The major processes are the following: (1)
Tivadar M. Tóth, Félix Schubert, Béla Raucsik, Krisztián Fintor   +3 more
doaj   +1 more source

Creation of a 3D Goethite–Spongin Composite Using an Extreme Biomimetics Approach

Biomimetics, 2023
The structural biopolymer spongin in the form of a 3D scaffold resembles in shape and size numerous species of industrially useful marine keratosan demosponges.
Anita Kubiak, Alona Voronkina, Martyna Pajewska-Szmyt, Martyna Kotula, Bartosz Leśniewski, Alexander Ereskovsky, Korbinian Heimler, Anika Rogoll, Carla Vogt, Parvaneh Rahimi, Sedigheh Falahi, Roberta Galli, Enrico Langer, Maik Förste, Alexandros Charitos, Yvonne Joseph, Hermann Ehrlich, Teofil Jesionowski   +17 more
doaj   +1 more source