نتایج جستجو برای: sorbates

تعداد نتایج: 51  

Journal: :Environmental toxicology and chemistry 2003
Benny Chefetz

Several studies have shown selective preservation of plant cuticular materials in soils. However, very little is known about their function as sorbents for the hydrophobic organic contaminants (HOCs) in the soil. In this study, we investigated the sorption and desorption of phenanthrene and atrazine by cuticular fractions of pepper (bulk, dewaxed, nonsaponifiable, and nonhydrolyzable) to better...

2000
Nick D. Hutson Ralph T. Yang

Sil®er is known to strongly affect the adsorpti®e properties of zeolites. In the synthesis ( ) of mixed Li,Ag low-silica X-type LSX zeolite, adding ®ery small amounts of sil®er and specific dehydration conditions results in a sorbent with enhanced adsorpti®e characteristics for air separation. The location of the extraframework sil®er in relation to the aluminosilicate framework is of primary i...

2009
Jelena Chirkova Bruno Andersons Ingeborga Andersone

The potentialities of different vapour sorption methods are analized for the investigation of the microstructure of wood sorbents (wood, cellulose and lignin) as a particular case of biopolymers. There are two important distinctions in the sorption behaviour of biopolymers from traditional rigid sorbents, namely, the dependence of the characteristics of the porous structure on the thermodynamic...

Journal: :Polymer International 2022

Microplastics (MPs) and nanoplastics (NPs) constitute a newly recognized class of contaminants emerging concern in air, soil, water food, causing unavoidable exposure to humans animals. Detection, identification quantification MPs NPs environmental matrices biota is challenging due the analytes' small size, random morphology, polymeric diversity, applied coatings vast surface areas which attrac...

Journal: :Agriculture 2021

Elevated or unnatural levels of arsenic (As) and phosphorus (P) concentrations in soils waterbodies from anthropogenic sources can present significant hazards for both natural ecosystems human food production. Effective, environmentally friendly, inexpensive materials, such as biochar, are needed to reduce mobility bioavailability As P. While biochar features several physicochemical properties ...

Journal: :E3S web of conferences 2021

During the operation of oil-filled electrical equipment under influence temperature, humidity and other negative factors, destruction paper insulation occurs. As a result this destruction, furan compounds are formed, which get into transformer oil. To identify process insulation, control in oil is carried out by instrumental methods. Of these methods, most widely used gas chromatography using p...

2014
M. Amin Zare S. M. Razavi Rohani M. Raeisi

Background: Food borne pathogens are of the main concerns of food producers and consumers and Escherichia coli and Staphylococcus aureus create a lot of problems worldwide. The aim of this study was to evaluate antibacterial effects of monolaurin, sorbic acid and potassium sorbate on S. aureus and E. coli at different pH values and NaCl concentrations. Methods: Micro-well dilution assay was use...

Journal: :Environmental Chemistry 2021

Environmental context The effects of the presence polymer additives and polymeric structure on sorption xenobiotics to microplastics remain unclear. Our results combined data from experimental batch experiments using three environmentally relevant model sorbates with confocal microscopy. This provides clear evidence that both factors play a major role in strength underlying process, affecting o...

Journal: :Journal of environmental quality 2005
Talli Ilani Elke Schulz Benny Chefetz

The role of structural fractions of dissolved organic matter (DOM) from wastewater in the sorption process of hydrophobic organic compounds is still not clear. In this study, DOM from two wastewater treatment plants (Lachish and Netanya, Israel) was fractionated to hydrophobic acid (HoA) and hydrophobic neutral (HoN) fractions. The fractions were characterized and their sorptive capabilities fo...

2014
Tony Pham Katherine A. Forrest Brant Tudor Sameh K. Elsaidi Mona H. Mohamed Keith McLaughlin Christian R. Cioce Michael J. Zaworotko Brian Space

Grand canonical Monte Carlo (GCMC) simulations of CO2 and CH4 sorption and separation were performed in dia-7i-1-Co, a metal-organic material (MOM) consisting of a 7-fold interpenetrated net of Co(2+) ions coordinated to 4-(2-(4-pyridyl)ethenyl)benzoate linkers. This MOM shows high affinity toward CH4 at low loading due to the presence of narrow, close fitting, one-dimensional hydrophobic chann...

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