نتایج جستجو برای: salt leaching

تعداد نتایج: 89382  

2017
Anthony Hughes James Laird Chris Ryan Peter Visser Herman Terryn Arjan Mol

The distribution and chemical composition of inorganic components of a corrosion-inhibiting primer based on polyurethane is determined using a range of characterisation techniques. The primer consists of a Li2CO3 inhibitor phase, along with other inorganic phases including TiO2, BaSO4 and Mg-(hydr)oxide. The characterisation techniques included particle induced X-ray and γ-ray emission spectros...

The aim of this study was to investigate the effect of leaching on the reduction of soybean (Glycin max), black cumin (Nigella sativa), dill (Anethum graveolens) and dragonhead (Dracocephalum moldavica) residues allelopathy in wheat (Triticum aestivum) cropping. The experiment was conducted in a completely randomized design with three replications in 2017. The factors consisted of four types of...

Journal: :Journal of contaminant hydrology 2002
RooijGerritH de Frank Stagnitti

Accurate assessment of the fate of salts, nutrients, and pollutants in natural, heterogeneous soils requires a proper quantification of both spatial and temporal solute spreading during solute movement. The number of experiments with multisampler devices that measure solute leaching as a function of space and time is increasing. The breakthrough curve (BTC) can characterize the temporal aspect ...

2013
R. Aragüés E. T. Medina I. Clavería A. Martínez-Cob J. Faci

Irrigation with moderately saline waters may provoke soil salinization and sodification. The objectives of this three-year study were (1) to quantify these processes in two seedless table grapevines (Vitis vinifera cvs. Autumn Royal and Crimson) subject to a full irrigation and two regulated deficit irrigations (RDI, irrigated at 80% and 60% of net irrigation requirements from post-veraison til...

Journal: :Biomaterials 2003
Jun Jin Yoon Jung Hoe Kim Tae Gwan Park

Dexamethasone, a steroidal anti-inflammatory drug, was incorporated into porous biodegradable polymer scaffolds for sustained release. The slowly released dexamethasone from the degrading scaffolds was hypothesized to locally modulate the proliferation and differentiation of various cells. Dexamethasone containing porous poly(D,L-lactic-co-glycolic acid) (PLGA) scaffolds were fabricated by a ga...

Journal: :Applied and environmental microbiology 2012
M Schubert J Engel L Thöny-Meyer F W M R Schwarze J Ihssen

In the present work, Norway spruce wood (Picea abies L.) was reacted with a commercial Trametes versicolor laccase in the presence of potassium iodide salt or the phenolic compounds thymol and isoeugenol to impart an antimicrobial property to the wood surface. In order to assess the efficacy of the wood treatment, a leaching of the iodinated and polymerized wood and two biotests including bacte...

Journal: :روش های عددی در مهندسی (استقلال) 0
محمدحسن عباسی و محسن صفرنورا... m. h. abbasi and m. safarnoorallah

fuel oil used in power plants contain metal impurities like vanadium. after combustion, this metal remains in boiler fuel ash in the form of oxide. in this research, extraction of vanadium oxide from fuel ash has been investigated. two processes were used for this purpose. a pyro- hydrometallurgy and a hydrometallurgy process. in the pyro-hydrometallurgy process, using sodium carbonate, salt ro...

Journal: :Journal of applied science and environmental management 2023

Microplastics (MPs) < 5 mm-sized are regarded as global environmental contaminants. This study analyzes MP concentrations in the Kaduna River (raw water), treated water from two conventional treatment plants, brands of bottled water, and food-grade salts available Metropolis, Nigeria using standard methods. Data obtained show that levels MPs ranged 25 to 36 particles L-1 153 raw water. While...

Journal: :Environmental pollution 2001
J A Hingston C D Collins R J Murphy J N Lester

Recent studies have generated conflicting data regarding the bioaccumulation and toxicity of leachates from preservative-treated wood. Due to the scale of the wood preserving industry, timber treated with the most common preservative, chromated copper arsenate (CCA), may form a significant source of metals in the aquatic environment. The existing literature on leaching of CCA is reviewed, and t...

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