Your search resulted in 174 documents. Displaying 25 entries per page.
The influence of soil pH on leaching of CCA elements from pressure-treated Eucalyptus saligna sapwood: environmental implication
2003 - IRG/WP 03-50203
Evidence is accumulating as to poor distribution and fixation of CCA in tropical hardwoods, and there is therefore a necessity to investigate the permanency of CCA in tropical hardwoods. The relationship between soil pH and leaching of Cu, Cr and As from CCA pressure-treated sapwood of Kenyan-grown Eucalyptus saligna was tested under laboratory conditions. Small sapwood samples were pressure-tre...
R Venkatasamy, D N Okwara
Dimension of lysimeters and the evaluation of the migration of wood preservative components in soil
1996 - IRG/WP 96-50065
In the past, investigations concerning the migration behaviour of wood preservatives were made to a minor extent and no uniform methods of test exist. The migration behaviour of CFB was determined using 5 lysimeters of different dimension. The results of the migration and distribution of the anions in the soil showed considerable differences between both ions. Approximately the whole quantity of c...
E Melcher, R-D Peek
Industrial wood preservation in Kenya. Present status – future prospects
2005 - IRG/WP 05-30385
Although some 50 years old, industrial wood preservation in Kenya does not appear to have technically, scientifically, and commercially evolved and contributed to significantly extend service lives of timbers, protect health and the environment, and curb unnecessary over-exploitation of forests. The population of the country has increased by 530% over the past 50 years; regular excisions have red...
R Venkatasamy
The environment and the timber preservation in the Benelux countries
1990 - IRG/WP 3580
The environment has become a major issue in all industries. To focus on the timber preservation industry an analysis is made of the production chain. Suggestions are made for diminishing or excluding emissions of agents of pollution. After a review of the legislation in Holland, some important statements are made on the production process, the products involved and the waste materials. Finally raw...
C De Mey, R Leegwater
World survey on the status of pollution control in the field of wood preservation
1976 - IRG/WP 369
In 1974 the IRG/WP-Secretariat distributed a "Questionnaire on the state of pollution control in the field of wood preservation" which was prepared by the author. The questionnaire consisted of two parts. Part A asked "General questions" on - the position of wood preservation in the respective country - the use of preservatives - the type of application of wood preservatives in different fields - ...
H Willeitner
An initial evaluation of the environmental impact of potential marine biocides
1978 - IRG/WP 441
Pilings and other structures in the marine environment are protected primarily by impregnation with creosote alone, or in combination with coal tar or waterborne preservatives such as copper-chrome-arsenate. Some of these materials are considered as possible ecological hazards and face an uncertain future; perhaps newly developed treatments to replace these conventional ones will pose different pr...
J D Bultman, P J Hannan
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 container is filled with a sand, silt, clay and potting soil, made up at their respective bulk density and wetted to a given moisture content. U...
G M F Van Eetvelde, R Hartmann, J M Mwangi, H S Öztürk, M Stevens
FIPRONIL - une nouvelle molécule insecticide Rhône Poulenc pou le PCO et la protection du bois [FIPRONIL - A new insecticide from Rhône Poulenc for PCO and wood preservation]
1995 - IRG/WP 95-50040-16
We will explain here after the advantages and key points of the new insecticide "FIPRONIL" from Rhône Poulenc Agrochemicals. We will have a look from the physical and chemical properties to the possible uses in PCO and wood preservation, including toxicology, efficacy and the main beneficial impacts on the environment. FIPRONIL, a new solution against undesirable and damageable insects, from cock...
M G E J Van Maanen
Raising of the grain and deformation of Scots pine (Pinus sylvestris) treated with water-borne preservatives
1987 - IRG/WP 3456
In Sweden partial impregnation to 10 mm depth of the pine sapwood (class B in the Nordic preservation standard) of joineries was introduced during the seventies. To avoid product quality problems, organic solvent-based systems have been used. However, the Swedish industry today has problems with organic solvents, mainly for environmental reasons. We have studied raising of the grain and deformatio...
G Hägglund, T Sebring
Effects of two wood preservatives and one water repellant on the settlement of fouling communities in a tropical marine environment
2002 - IRG/WP 02-30293
Observations made on recruitment of fouling organisms on treated panels exposed at an Indian harbour, Krishnapatnam on the east coast (Lat: 13028’ to 13059’ N; Long: 80010’ to 80016’ E) during November, 1997 to October, 1999 are reported and compared with fouling communities on control panels. Wooden panels of Erythrina variegata, Paraserianthus falcataria, Tetrameles nudiflora an...
B Tarakanadha, K S Rao
Combustion properties of Alder wood treated with some new environment friendly natural extractives. Part 1. Effect of Natural Tannins on the Combustion Properties
2002 - IRG/WP 02-40234
Powders of the brutia pine bark, sumach leaves, acorn, gall-nut and boric acid and borax which are known as potential environment friendly wood preservatives were impregnated according to ASTM D 1413-88 in order to determine their combustion properties. A commercial treatment compound, Tanalith-CBC, was also used for comparison.
The results indicated that the natural extractives did not have an...
Ü C Yildiz, A Temiz, E D Gezer, S Yildiz
Borates as wood preservatives - an environmental, health and safety perspective
1993 - IRG/WP 93-50001-03
Boron compounds are highly effective wood preservatives and have an established safe use in the timber treatment industry. Their widespread background occurrence in nature, low acute mammalian toxicity and useful properties make them versatile active ingredients within today's environmentally aware society. A critical review of health, safety and environmental data on the borates, their u...
J B Rainer
Structural defects in CCA treated timber fence posts: A case study.
1997 - IRG/WP 97-40084
Since 1983 an environmental improvement programme has been in progress in the city of Dundee. This programme included the erection of rail and pale timber fencing throughout the city. The timbers had been pressure treated with CCA prior to painting with 2 coats of an exterior wood stain finish. However, the larger dimension timber fence posts (100 x 125 x 1500 mm3) regularly developed severe check...
S Muhsin, D C R Sinclair, A Bruce, H J Staines
Durability of Anogeissus acuminata timber used for plank-built catamarans
2005 - IRG/WP 05-10551
Catamaran, the most versatile traditional fishing craft used along the Indian coast is made hitherto of solid timber of a few selected species of broad-leaved soft woods. Due to scarcity coupled with high cost of these timbers, the craft, of late, are fabricated from the wooden planks of an indigenous hardwood species, namely, Anogeissus acuminata (Yon) belonging to the family Combretaceae. Infor...
M V Rao, M Balaji, V Kuppusamy, K S Rao
Microbial fouling of 10-40% naphthalene in creosote treated and untreated wooden pilings in the marine environment - A progress report
1980 - IRG/WP 455
In June 1978, Document No: IRG/WP/442 entitled 'Microbial Biofouling of 10-40% Naphthalene in Creosote Treated and Untreated Wooden Pilings in the Marine Environment" was released to the IRG members as a report on the early results of a long term (about 5 years) study of whether the naphthalene content of creosote was importart in protecting wood pilings in the marine environment from bor...
R R Colwell, A J Emery
Termites in Uruguay; control, prevention and environment
1991 - IRG/WP 1474
When Prof. La Fage's questionaire on termites was received by 1987, few were aware of termite damage in Uruguay and infestations were not much reported. Further contacts between scientists, operators and homeowners, are now shaping the real threat of termite attack. Before letting the problem faIl in the hands of the layman, with all ist environmental risks, it seemed reasonable to: 1) re...
A Aber, G Baillod
Timber deterioration and its prevention in marine environment
2005 - IRG/WP 05-10559
Wood-borer activity is an established fact in Mumbai harbour that leads to severe deterioration of timber. In order to prevent the deterioration caused by wood borers three resin preservatives containing Zinc borate, Organo-copper polymer (4 wt% Cu) and Organo-Tin polymer Copoly(TBTM-MMA) were used for timber treatment. Test panels were treated using standard method and the...
B S Swami, M Udhayakumar, P Kumar, A B Samui
A comparison of the migration behaviour in soil of different waterborne wood preservatives and their leachates
1997 - IRG/WP 97-50091
Lysimeter tests were carried out on water-soluble wood preservatives and on wood preservative components leached out of impregnated wood. The purpose of these tests was to determine the extent to which the migration behaviour of environmentally relevant ions in the soil is influenced under comparable conditions. The results clearly show that the groundwater is especially at risk when wood preserva...
E Melcher, R-D Peek
Development of a model system to assess the efficacy and environmental impact of a chromated fluoride remedial treatment for creosoted distribution poles
1992 - IRG/WP 92-2395
A closed model system was designed to facilitate a controlled study of the leachability and environmental fate of a remedial preservative under laboratory conditions. The elements of the model include a precipitation apparatus above a treated pole section which is positioned in a representative soil profile supporting a sward of perennial ryegrass. The model will allow detailed examination of the ...
D C R Sinclair, G M Smith, A Bruce, B King
Diffusion of chromium and fluoride in Rentex treated creosoted pole sections
1991 - IRG/WP 3659
A chromated fluoride preservative was applied by injection to the groundline regions of creosoted distribution pole sections and these were erected at a filed site in Scotland. Wood samples were recovered for chemical analysis at one week, two, five and twelve months after treatment. Small sample mass and destructive nature of the analysis necessitated modification of an alkali fusion technique to...
D C R Sinclair, G M Smith, A Bruce, B King, H J Staines
The registration of wood preservatives in Canada
1977 - IRG/WP 394
The Pest Control Products Act in Canada is a part of Federal Agricultural legislation affecting chemicals for wood protection. Other parts of Federal legislation include Canadian Fisheries Act, Fed. Food and Drug act, Environmental Contaminants Act, Clear Air Act, Navigable Waters Protection Act and the Criminal Code Section 165. Some of the main excerpts from the Pest Control Products Act are as ...
J Rak, J K Shields
Chromium in wood preservation: Health and environmental aspects
1978 - IRG/WP 3120
The majority of water-borne salts in current use contain hexavalent chromium, usually as dichromate or chromium trioxide. In about 1913 it was suggested that chromates, phosphates or borates could be added to the sodium fluoride and dinitrophenol mixtures then in use in order to inhibit corrosion. Dichromates were found to be most suitable and the resulting mixture known as Thriolith and later Tri...
T R G Cox, B A Richardson
Using preservative treated timber in the built environment of the Sydney Olympic Games
1998 - IRG/WP 98-50101-01
Sydney was awarded the right to host the Games of the XXVII Olympiad by a vote of the members of the International Olympic Committee (IOC) in Monte Carlo on 23 September 1993. Up to 10 200 athletes and approximately 5 100 technical officials from 200 countries are expected to participate in the Sydney 2000 Games. Approximately 15 000 media representatives from around the world are expected to come...
H Greaves, J Norton
The fate of salt preservatives in facility yard soils and decontamination of soils and drainage waters
1993 - IRG/WP 93-50001-25
Extensive studies during the past 10 to 15 years revealed that noticeable amounts of preservative components may be released in the environment by dripping off or by rain prior to fixation unless adequate precautions are taken. Therefore, soil and groundwater contamination especially from chromium-VI compounds but also from other inorganic and organic constituents exist in impregnation plants, pos...
R-D Peek, H Klipp, K Brandt
Settlement of fouling organisms on CCA-treated Scots pine in the marine environment
1997 - IRG/WP 97-50094
As part of an EU project to investigate the effects of CCA loading on non-target marine fouling animals, exposure panels of Scots pine treated to 12, 24 and 48 kgm-3 CCA and untreated controls were submerged at seven coastal sites (Portsmouth, UK: Kristineberg, Sweden: La Tremblade (2 sites), France: Ria Formosa, Portugal: Sagres, Portugal: Athens, Greece). Inspections were made at 6 and 12 months...
C J Brown, R A Eaton