Your search resulted in 56 documents. Displaying 25 entries per page.
Efficacy of lignocellulosic materials for Removal of Cation and Anions from Industrial and Urban Wastewater
2016 - IRG/WP 16-50321
The adsorption of Ca, Zn, Na, Cd (II), Cr (III) and No3 ions from industrial and urban wastewater and aqueous solutions by poplar (Populusnigra) sawdust, cotton linter, zeolite and expanded perlite were examined on the basis of a batch adsorption technique. The…
M Akhtari, M Ghorbani Kohkandeh, H Borazjani
Penetration of phenol formaldehyde (PF) resin into beech wood studied by light microscopy
2015 - IRG/WP 15-20558
…is corresponding to less free microvoids available for adsorption of safranin. Less intensity of dye was observed from cross-sections of treated samples compared to untreated. The lowest amount of safranin was found for wood treated with oligomers of resins A, whereas wood treated with oligomers of B in…
V Biziks, S Bicke, H Militz
Development of a new characterization method to analyse Cypermethrin penetration in wood material by immunolabelling
2015 - IRG/WP 15-30674
…this part of the cell walls. The results suggest that the adsorption within the cell walls is an essential factor of the retention of cypermethrin and of its permanence in wood-treated materials and products.
S Tapin-Lingua, K Ruel, J-P Joseleau, D Messaoudi, O Fahy, M Jequel, M Petit-Conil
Comparison of gauge and assay retention in crossties treated with copper naphthenate
2014 - IRG/WP 14-40667
…estimated from solution uptake, in part due to selective adsorption of copper.
J Brient, H Tomlinson, J Hughes
The Physical Properties of Heat Treated Fir Wood and Outdoor Durability
2014 - IRG/WP 14-40677
Wood might be easily susceptible to degrade by biotic and abiotic factors. Therefore, wood should be protected from fungi, insects and other degradation factors by applying treatment methods. Especially, for the wood have used in the external environment. Chem…
O E Özkan, H Vurdu, A Temiz, G Köse
Activities of moulds on wood as a function of relative humidity during desorption and absorption processes
2013 - IRG/WP 13-10794
…mould activities were also different from desorption to adsorption processes under the same relative humidity levels. This might be caused by the moisture hysteresis properties of wood. Therefore, besides of relative humidity, water availability also plays an important role for mould growth. Such information…
Yujing Li, L Wadsö
Micronized Copper Wood Preservatives: Strong Indications of the Reservoir Effect
2013 - IRG/WP 13-30609
…qualities such as reduced leaching, reduced selective adsorption of actives and reduced fastener corrosion. This paper further elucidates the efficacy of micronized copper in multiple systems and discusses the “Reservoir Effect” for micronized systems.
M H Freeman, C R McIntyre
Hygroscopicity of wood after polyethylene glycol (PEG) impregnation and/or heat treatment
2013 - IRG/WP 13-40623
…showed slight influence on both water uptake and moisture adsorption. (4) The heat treatment at temperatures below 160 ℃ showed little influence on equilibrium moisture content (EMC), but significantly decreased the EMC above 160 ℃. The combination of PEG-heat treatment produced inconsistent results at different…
Weiyue Xu Yuan Zhu, Jinzhen Cao
Preparation and characterization of activated carbon fibers prepared from liquefied wood
2013 - IRG/WP 13-40636
…analysis of burning behavior, X-ray diffraction, nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy, and SEM. The results showed that the burn-off value of the LWACFs increased gradually with the increase in temperature or time. All the LWACFs were far from being structurally graphitized, and…
Wenjing Liu, Guangjie Zhao
Relationships between heat treatment intensity and some conferred properties of different European softwood and hardwood species
2012 - IRG/WP 12-40593
…stability as well as its reduced capability for water adsorption. All these modifications of wood properties appeared simultaneously and progressively with the increase of treatment intensity depending from treatment duration. At the same time, effect of extractives generated during thermal treatment on Poria…
M Chaouch, S Dumarçay, A Pétrissans, M Pétrissans, P Gérardin
The study of fungicidal values und sorption processes of ionic liquids- potential wood preservatives on soils
2011 - IRG/WP 11-30572
…and were related to hydrophobicity of ammonium salts. Adsorption on soil was linearly related to the solution concentration of new wood preservatives. Ionic liquids proved high adsorption onto soils made of loam and clay (arable land), and a significantly lower sorption on forest soil.
W Przybylska, J Zabielska-Matejuk, A Stangierska, A Skrzypczak
Sorption properties of wood impregnated with aqueous solution of boric acid and montan wax emulsion
2010 - IRG/WP 10-40492
…of wood. The equilibrium moisture content (EMC) during the adsorption and the desorption process at five levels of relative humidity (φ1 = 20%, φ2 = 33%, φ3 = 65%, φ4 = 88% and φ5 = 98%) was monitored. Water repellence efficiency was monitored in the chamber with high relative air humidity (87%) and during…
B Lesar, M Humar
Kinetic Water Vapour Sorption of Sitka Spruce at Variable Temperature Using the Parallel Exponential Kinetics Model
2010 - IRG/WP 10-40512
…times and moisture contents associated with them. The slow adsorption and desorption processes exhibited important differences in their characteristic times, although hysteresis in the moisture contents was found to be variably distributed between the fast and slow processes depending on isotherm temperature.
Yanjun Xie, C Hill
Tensile stress relaxation of wood impregnated in different ACQ formulations at various temperatures
2009 - IRG/WP 09-40456
…the competitions among ACQ constituents existed, the adsorption of copper is still the major reaction in the wood.
Lili Yu, Jinzhen Cao
The effect of chemical changes on the wood-moisture relationships in thermally-modified wood
2009 - IRG/WP 09-40473
…anti-swelling efficiency (ASE), movement, hygroscopicity (adsorption and desorption), transversal swelling (radial and tangential directions), and equilibrium moisture content. The chemical composition of thermally modified wood (TMW) was also determined; an analysis of the relationship between chemical changes and…
M M González-Peña, M D C Hale
Chemical modification of Scots Pine Sawdust by mixed anhydrides
2008 - IRG/WP 08-40439
…water repellency (WR) was 25 mmol.Kg-1. Water vapor adsorption measurements indicated that contrarily to WR, hydrophobicity to water vapor was correlated to the total mass acyl content.
J Peydecastaing, E Borredon, S El Kasmi
Kd values of Cu, Cr, As in different soil matrix
2007 - IRG/WP 07-50247
…preservative, have raised environmental concerns. Adsorption characteristics of domestic soils for chromium, copper, and arsenic were assessed by measuring distribution coefficient (Kd) values of these metal components. The results revealed that Kd values were higher in chromium, followed by arsenic and…
Sung-Mo Kang, Seung-Hun Shin, Ja-Oon Koo
Wood preservatives ecotoxicology on Gammarus pulex (L.) - toward an environmental monitoring method and a getting rid of pollution process
2005 - IRG/WP 05-50224-9
…this study, we aim on the one hand to determine the adsorption capacity of different substrates of propiconazole, a fungicide widely used in the wood treatment, and on the other, to evaluate the toxicity of wood preservatives for G. pulex in controlled conditions. We hypothesize that the fungicide toxicity may…
O Adam, F Degiorgi, G Crini, P-M Badot
Data requirements for wood preservatives in the EU Biocides Directive
2001 - IRG/WP 01-50166-08
…need for the additional ecotoxicological testing on e.g. adsorption, degradation and bioconcentration. Issues important for wood preservatives are data required on efficacy and on leaching from treated wood.
H Braunschweiler
Analysis of water repellents in wood treated with water borne formulations using FTIR
2000 - IRG/WP 00-40176
…by using the intensity of the hydrocarbon C-H stretch adsorption. Methods for correcting or eliminating the interference from non-water repellent components in the wood extracts were developed.
P J Walcheski, L Jin
Environmental fate of copper-based wood preservatives in different soil substrates - Part 2: Study of the metal sorption and migration potential under simulated rainfall
1998 - IRG/WP 98-50101-21 b
In order to examine the potential environmental impact of spillages of the saltborne wood preservative CCA in treatment plants, four large scale experiments are set-up so as to follow the water transport and ion mobility in various field soils.
A plastic cont…
G M F Van Eetvelde, R Hartmann, J M Mwangi, H S Öztürk, M Stevens
Characteristics of the pigments produced by sap-staining fungi
1997 - IRG/WP 97-10223
…the similar structures of both fungal melanins. The adsorption bands at aliphatic CH in infrared spectra were stronger in fungal melanins than in synthetic melanin. From elemental analyses, H/C ratio of fungal melanins were higher than that of synthetic melanin. These results suggested that both fungal…
M Mori, M Takahashi
Biosorption of metals for wood waste effluent clean up
1997 - IRG/WP 97-50090
…are tested: Mucor miehei and Aspergillus oryzae. The adsorption of metal ions depends on parameters such as chemical treatment of fungi before biosorption (acid or basic treatment), pH, adsorption time, metal ions and biomass concentrations. 88% of Cu2+ is recovered in one hour by Aspergillus oryzae and Mucor…
S Legay, G Labat
Methods for the assessment of wood preservative movement in soil
1995 - IRG/WP 95-50040-08
…soil. The experiments included: i) measurement of the adsorption of preservatives by soil; ii) determination of the concentration gradient of preservatives in soil following percolation of preservative solution through soil; iii) determination of the changes in concentration gradient by subsequent leaching of…
G E Holland, R J Orsler
Kiln drying of LSOP treated timber: rate of solvent evaporation, overpaintability and recovery of the solvent
1992 - IRG/WP 92-3711
The rate of solvent evaporation from LOSP treated timber dried in a kiln at 35°C has been investigated. Around 50% solvent removal has been found to be consistent with good overpaintability using a water based acrylic primer. It has been demonstrated that an…
P Warburton, L B Sheard