Results 51 to 60 of about 11,613 (265)
Soil and Water Research, 2007 The aim of the present paper was to determine hydrophilic and hydrophobic properties and the degree of polydispersity of humic acids depending on their degree of maturity and the properties of the plant material participating in the process of ...
Bozena Debska +2 more
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Trophic Diversity in Duckweed: Mixotrophy, More Than the Sum of its Extremes
Advanced Science, EarlyView.In the context of rising DOC in aquatic environments, mixotrophic duckweed may impact carbon cycling by acting as either a carbon sink, as they absorb CO2 through photosynthesis, or a carbon source, as they release CO2 through respiration of absorbed DOC, which depends on DOC concentration, light availability, temperature, and other environmental ...
Zuoliang Sun +5 more
wiley +1 more source
Química Nova, 2013 Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently ...
Ruben Anillo-Correa +2 more
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Humic acid removal by electrocoagulation: characterization of aluminum species and humic acid
Desalination and Water Treatment, 2016 In this study, the different aluminum (Al) species generated during electrocoagulation (EC), the humic acid (HA) removal, and the change in HA characteristics were evaluated. The results show that the distribution of monomeric Al species (Ala), medium polymer Al species (Alb), and colloidal or solid Al species (Alc) was dependent on initial pH and ...
Jane S. Palacios, Ronna +2 more
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Adsorption of Forever Chemical Pollutants: The Physical Chemistry of PFAS Near Surfaces
Advanced Science, EarlyView.Current adsorption‐based remediation techniques for removing per‐ and polyfluoroalkyl substances (PFAS) from water are limited by knowledge gaps on PFAS behavior near solid surfaces. This review provides a state of the art on theoretical and experimental aspects of PFAS adsorption.
Nada Ben Amor +3 more
wiley +1 more source
Heavy metal distribution between fractions of humic substances in heavily polluted soils
Plant, Soil and Environment, 2004 Soil organic matter is important in controlling heavy metal behaviour in soils. This study aims to determine the distribution of organically bound Cd, Pb, and Zn between humic and fulvic acids in 20 samples of heavily polluted Fluvisols.
L. Borůvka, O. Drábek
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Sorption of Neodymium from Nitrate Solutions by Humic Acids-Based Sorbent
Eurasian Chemico-Technological Journal, 2022 This work obtained a sorbent based on humic acids (HA) isolated from oxidized brown coals of the Maikuben deposit. The study of humic acids by IR spectroscopy showed the presence of various functional groups (OH-, COOH-) in the sorbent, which can enter
A.G. Ismailova +6 more
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Chemical and wettability studies on coal, humic acid and cyclized humic acid
Fuel, 1989 Abstract Investigation of properties such as wettability of coal is often complicated by variations in the surface chemistry of coal samples during their preparation, storing and pretreatments. It is the aim of this study to prepare hydrophobic and hydrophilic derivatives of a single parent coal by chemical methods selected for rupturing and closing ...
R. Ramesh, P. Somasundaran
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Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.This article reviews the current state of bioinspired soft robotics. The article discusses soft actuators, soft sensors, materials selection, and control methods used in bioinspired soft robotics. It also highlights the challenges and future prospects of this field.
Abhirup Sarker +2 more
wiley +1 more source
Soil pH and Solubility of Aluminum, Iron, and Phosphorus in Ultisols: the Roles of Humic Acid [PDF]
Journal of Tropical Soils, 2013 Soil reaction (pH), aluminum (Al), iron (Fe) and phosphorus (P) are the soil properties that are related to each other. Their role on the growth and development of plant is very significant.
Hairil Ifansyah
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