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Effect Of Remediation On The Release Of Copper Chromium And Arsenic From Particleboard Made From Cca Treated Wood
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Book Synopsis Effect of remediation on the release of copper, chromium, and arsenic from particleboard made from CCA treated wood by : S. Nami Kartal
Download or read book Effect of remediation on the release of copper, chromium, and arsenic from particleboard made from CCA treated wood written by S. Nami Kartal and published by . This book was released on 2001 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Impacts of Treated Wood by : Timothy G. Townsend
Download or read book Environmental Impacts of Treated Wood written by Timothy G. Townsend and published by CRC Press. This book was released on 2006-06-02 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Responding to a heightened awareness of the possible adverse effect of treated wood, this book presents multidisciplinary research results and fundamental information on regulations, wood treatment alternatives, and documentation of environmental releases. It examines the impact of treated wood on water, soil, and organisms. Several chapters discuss ways to measure exposure and review various approaches to risk assessment and management. Case studies address human health effects of exposure. The book also presents state-of-the-art disposal technologies, new preservative compounds, and recent developments related to phase outs of certain treated wood products.
Book Synopsis Role of Construction Debris in Release of Copper, Chromium, and Arsenic from Treated Wood Structures by :
Download or read book Role of Construction Debris in Release of Copper, Chromium, and Arsenic from Treated Wood Structures written by and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Sustainable Method for the Disposal of Chromated Copper Arsenate (CCA) Treated Wood by : Azita Hajizadeh Moghaddam
Download or read book Development of a Sustainable Method for the Disposal of Chromated Copper Arsenate (CCA) Treated Wood written by Azita Hajizadeh Moghaddam and published by . This book was released on 2011 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preserved wood is commonly found in solid waste. Among the different types of preserved wood, CCA wood has received much attention due to the scale of usage and its significant role in soil and water contamination after disposal. As the ash of CCA wood is hazardous, it cannot be burned, and the best available disposal method is thus landfilling. Leaching of the metals from disposed CCA wood in landfills pollutes the environment. To reduce the contamination of CCA, treatment before landfilling is required. Nowadays, ethanol is seen as a promising source of energy. Lignocellulosic materials such as wood are resources for ethanol production. This research focuses on the possibility of producing ethanol from CCA wood. It suggests that production of ethanol will not only be a solution to the disposal but will also generate a clean fuel. The results showed the existence of copper, chromium and arsenic did not have a negative effect on the fermentation, and producing ethanol from CCA wood is feasible. The copper removed by sulfuric acid completely precipitated during the hydrolysis and neutralization. In addition about 50% of the chromium (VI) and also 60% of the arsenic (V) were removed from the leachate by yeast during fermentation. TCLP tests of the hydrolyzed wood leached less than 4 ppm of arsenic while minimal amounts of chromium and copper remained in the hydrolyzed wood which makes landfilling of hydrolyzed wood acceptable. Baker's yeast behaves selectively by uptaking arsenic (V) and chromium (VI) but not arsenic (III) and chromium (III). There is competition between copper and chromium sorption by yeast. The kinetic model for removal of copper and chromium is a zero order model while the appropriate model for uptaking arsenic by yeast is a first order model. The kinetic models confirm that there are different mechanisms of uptaking metals by yeast, a diffusion mechanism for removal arsenic and a surface adsorption mechanism for copper and chromium. As an overall conclusion of this study, using discarded CCA wood as the feed for ethanol production is a sustainable method for disposal of CCA treated wood.
Book Synopsis Effect of Prestain on the Release Rate of Copper, Chromium, and Arsenic from Western Hemlock by : Stan T. Lebow
Download or read book Effect of Prestain on the Release Rate of Copper, Chromium, and Arsenic from Western Hemlock written by Stan T. Lebow and published by . This book was released on 1999 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Chromated Copper-arsenate (CCA) Pressured-treated Wood on Local Sediments and Benthos in a Freshwater Lake by : William A Romeo
Download or read book The Effects of Chromated Copper-arsenate (CCA) Pressured-treated Wood on Local Sediments and Benthos in a Freshwater Lake written by William A Romeo and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study looked at the sediment and benthic organism effects of exposure to a Chromated Copper-Arsenate (CCA) treated wood bulkhead in a lake environment with respect to 1) the leaching and accumulation of chromium, copper and arsenic in the nearby sediments, 2) accumulation of these metals in local benthic organisms and 3) the effects of these metals on the local benthic community structure. Sediment samples, taken at regular distances away from a CCA bulkhead and three reference areas in a freshwater lake in Wayne, NJ, were sieved to remove the fine particle fraction (
Book Synopsis Characterization of Arsenic, Chromium, and Copper Released from Chromated Copper Arsenate Type C (CCA-C) - Treated Southern Pine by : Weining Cui
Download or read book Characterization of Arsenic, Chromium, and Copper Released from Chromated Copper Arsenate Type C (CCA-C) - Treated Southern Pine written by Weining Cui and published by . This book was released on 2004 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Study of the Environmental Impacts of CCA-treated Wood Waste Land Application by : Theresa Mercer
Download or read book An Experimental Study of the Environmental Impacts of CCA-treated Wood Waste Land Application written by Theresa Mercer and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromated copper arsenate (CCA) has been the most commonly used wood preservative in the UK; up until its partial ban in 2004. The preservative prolongs the service life of wood by 20-50 years by making it resistant to biological attack. As such, in-service CCA treated wood is expected to be a major component of the UK wood waste stream in the future. Concerns over the impact of the chemical constituents of this treatment on both the environment and human health have prompted the introduction of legislation to ensure that such waste is disposed of safely in Hazardous Waste Landfills. Despite this, studies have shown that this waste can still enter into the landscape mulch market due to inadequate detection methods and increasing societal pressures to recycle. A series of laboratory and field-based simulations were used to quantify leaching of copper, chromium and arsenic from CCA-treated wood waste mulch and evaluate the factors involved in promoting leaching. The distribution and behaviour of the metals in the soil column and leachate were also assessed. The samples generated in the study were analysed for a range of physico-chemical measurements, elemental and speciation concentrations. Results show that arsenic, chromium and copper leaches from CCA waste wood; at times to levels exceeding regulatory thresholds by two to three orders of magnitude. Furthermore, the more toxic and mobile species of arsenic (As III) and chromium (Cr VI) were detected in both soil and leachate samples. A mass balance was produced which demonstrated that CCA wood tends to leach on initial exposure to a leachant and also during weathering of the wood. When in contact with soil, metal(loid) transport is reduced due to complexation reactions. With higher water application or where the adsorption capacity of the soil is exceeded, the metal(loid)s are transported through the soil column as leachate. Overall, there was a loss of metal(loid)s from the system that could be due to loss of water, volatilisation of arsenic and plant uptake. Due to the toxicity and concentration levels of the leached elements identified in the current study, it is apparent that adverse environmental and human health impacts may result from direct and indirect exposure to the environmental media.
Book Synopsis Electrodialytic Remediation of CCA-treated Wood in Larger Scale Chromated Copper Arsenate by : Iben Vernegren Christensen
Download or read book Electrodialytic Remediation of CCA-treated Wood in Larger Scale Chromated Copper Arsenate written by Iben Vernegren Christensen and published by . This book was released on 2005 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Environmental Impacts of Wood Treated with Chromated Copper Arsenate (CCA)and Three Different Arsenic-free Preservatives by : Brajesh Kumar Dubey
Download or read book Comparison of Environmental Impacts of Wood Treated with Chromated Copper Arsenate (CCA)and Three Different Arsenic-free Preservatives written by Brajesh Kumar Dubey and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Recently, the treated wood industry phased out the use of arsenic (As)-preserved wood for residential uses in favor of copper-preserved wood. Pressure-treated wood products of CCA and three As- and Cr- free preservatives, alkaline copper quaternary (ACQ), copper boron azole (CBA), and disodium octaborate tetrahydrate (DOT), were studied, and the possible environmental impacts from these treated wood products were compared under identical in-service and disposal scenarios. The scenario of treated wood use in an aquatic ecosystem was simulated in laboratory conditions.
Book Synopsis Leaching, Hydration and Physical-mechanical Properties of Spent Chromated Copper Arsenate (CCA)-treated Wood-cement Composites by : Hucheng Qi
Download or read book Leaching, Hydration and Physical-mechanical Properties of Spent Chromated Copper Arsenate (CCA)-treated Wood-cement Composites written by Hucheng Qi and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapidly increasing amount of the spent chromated copper arsenate (CCA)-treated wood, measures should be taken to recycle it in a more practical, economic and environmentally friendly manner. One promising approach is to use this material as furnish in wood-cement composites, but a better understanding of the interaction between treated wood and cement is needed. This thesis was mainly focused on: (1) Considering the effects of hot water extraction, CCA retention and wood/cement ratio on wood-cement compatibility, by hydration characteristic measurement, x-ray diffractometer (XRD) analysis and strength test. (2) Attempting to increase physical-mechanical properties of cementbonded particleboard (CBPB) made from spent CCA-treated wood, by adding silica fume and adjusting water/cement ratio. (3) Studying the leaching properties of CCA-treated wood-cement composites; finding the origin of leachable CCA components and considering the effect of FeSO4, silica fume, accelerators, water/cement ratio, wood/cement ratio, CCA retention and hydration time on the leaching properties of CCA-treated wood-cement composites. (Abstract shortened by UMI.).
Book Synopsis Evaluation of the Effectiveness of Coatings in Reducing Dislodgeable Arsenic, Chromium, and Copper from CCA Treated Wood by :
Download or read book Evaluation of the Effectiveness of Coatings in Reducing Dislodgeable Arsenic, Chromium, and Copper from CCA Treated Wood written by and published by . This book was released on 2008 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mediterranean Architecture and the Green-Digital Transition by : Ali Sayigh
Download or read book Mediterranean Architecture and the Green-Digital Transition written by Ali Sayigh and published by Springer Nature. This book was released on 2023-10-09 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected papers presented during the World Renewable Energy Network’s biannual World Med Green Forum (MGF). The 2022 MGF highlights the role of renewable energy applications in the sustainable building sector with a focus on the Mediterranean region as a foundation for a truly positive energy future. MGF is an open roundtable for an international community of researchers, practitioners, and experts to discuss the most innovative and promising sustainable building technologies. The papers presented explore the intersection between twin transitions in policies, programs, projects, and experimentation, with the digital domain innovating the green building sector towards more reliable and inclusive planning and design practices in order to collectively envision future buildings and cities.
Book Synopsis Carcinogenic Risk of Chromium, Copper and Arsenic in CCA-treated Wood by :
Download or read book Carcinogenic Risk of Chromium, Copper and Arsenic in CCA-treated Wood written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Copper-chromium-arsenic (CCA) Treated Wood by X-ray Fluorescence Spectroscopy by : South African Bureau of Standards
Download or read book Analysis of Copper-chromium-arsenic (CCA) Treated Wood by X-ray Fluorescence Spectroscopy written by South African Bureau of Standards and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chromium, Copper, and Arsenic Concentration and Speciation in Soil Adjacent to Chromated Copper Arsenate (CCA) Treated Lumber Along a Topohydrosequence by : Donald Roy Schwer (III)
Download or read book Chromium, Copper, and Arsenic Concentration and Speciation in Soil Adjacent to Chromated Copper Arsenate (CCA) Treated Lumber Along a Topohydrosequence written by Donald Roy Schwer (III) and published by . This book was released on 2010 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of the Loss of Copper, Chromium, and Arsenic Preservatives from Pressure-treated Lumber by : Lisa Y. Blue
Download or read book An Evaluation of the Loss of Copper, Chromium, and Arsenic Preservatives from Pressure-treated Lumber written by Lisa Y. Blue and published by . This book was released on 2002 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
