Solar Detoxification Technology
Author: John V. Anderson
Publisher:
Published: 1991
Total Pages: 6
ISBN-13:
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Author: John V. Anderson
Publisher:
Published: 1991
Total Pages: 6
ISBN-13:
DOWNLOAD EBOOKAuthor: Nancy Reece
Publisher:
Published: 1991
Total Pages: 20
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1991
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKSolar energy is being applied to one of the most difficult environmental problems our country faces in the coming decades: the destruction of hazardous waste. DOE Researchers are developing two separate technologies -- solar detoxification of water and solar decontamination of soil -- that could revolutionize the way toxic wastes are removed from the environment. Unlike many remediation techniques in use today, these solar-based processes actually destroy hazardous contaminants; the wastes are not transferred to other media for disposal. Solar detoxification of water uses solar energy to power a reaction that eliminates organic contaminants from polluted surface water and groundwater. The process uses a solar-activated photocatalyst, such as titanium dioxide, to break the bonds holding organic compounds together. Researchers are currently working to increase the efficiency and reduce the costs of the process to make it economically competitive with traditional remediation methods. In a related program researchers are investigating the ability of high solar flux (upwards of 300 times the sun's normal intensity) to decontaminate polluted solids such as soils. The solar decontamination of soil is a two-step process: in the first step contaminants are desorbed from the solid either by solar thermal energy or by conventional means (such as heating or vacuum extraction); in the second step the desorbed contaminants are destroyed. The contaminants can be destroyed by using either a high-flux photolytic process or a low-flux process that employs a photocatalyst. SERI's state-of-the-art high-flux solar furnace is home to a large portion of the soil decontamination research. 4 figs.
Author: Julián Blanco Gálvez
Publisher: UNESCO
Published: 2003
Total Pages: 216
ISBN-13:
DOWNLOAD EBOOKSolar detoxification, an innovative process of water treatment using solar technology, is ready for practical application after a decade of research and development. This is of great significance as 70 per cent of the world's population currently lives within the 'sun belt', where sustainable solar technologies are feasible--a proportion due to increase in the future. Divided into two parts, the first part addresses the theory and fundamentals of water decontamination using solar energy. This prepares .the reader for the second part of the book, which addresses practical applications and engineering processes. Although the book targets university students and post graduates it can also be read by any professional or technician as all subjects are treated in depth, with scientific rigor, but are also attractively presented with a profusion of pictures and graphics. No specific previous knowledge is necessary.
Author: Greg C. Glatzmaier
Publisher:
Published: 1990
Total Pages: 5
ISBN-13:
DOWNLOAD EBOOKAuthor: D. Yogi Goswami
Publisher: Earthscan
Published: 2007
Total Pages: 674
ISBN-13: 1844073149
DOWNLOAD EBOOKFirst Published in 2007. Routledge is an imprint of Taylor & Francis, an informa company.
Author: S. Doty
Publisher:
Published: 1997
Total Pages: 121
ISBN-13:
DOWNLOAD EBOOKA demonstration of a solar detoxification system was conducted for the U.S. Army Environmental Center (USAEC) at Science Applications International Corporation's (SAIC's) test site near Golden, Colorado, in June 1997. The purpose of this demonstration test was to evaluate the use of solar energy for thermally detoxifying organic compounds representative of soil contamination found at U.S. Army sites. The demonstration test was carried out under the third of three tasks conducted under contract by SAIC. Under Tasks I and II, the conceptual and detailed design of a pilot-scale system was completed. Under Task III, fabrication and testing of the system were accomplished. This document presents the results obtained during the Task III demonstration test. The purpose of this demonstration test was to evaluate the use of solar energy to thermally detoxify organic compounds removed from contaminated media by ex situ (such as thermal desorption) or in situ (such as soil vapor extraction) treatment systems, or desorbed from pretreatment matrices (such as activated carbon). Extraction systems are commercially available so the step of directly extracting organic from contaminated soil was excluded from the pilot-scale demonstration. Rather, the pilot-scale demonstration test focused on evaluating ultraviolet (UV)-rich solar destruction of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) by a solar incinerator and the environmental control of the resulting off gases.
Author:
Publisher:
Published: 1994
Total Pages: 0
ISBN-13:
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Publisher:
Published: 1992
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKThe Solar Detoxification Field Experiment was designed to investigate the photocatalytic decomposition of organic contaminants in groundwater at a Superfund site at Lawrence Livermore National Laboratory (LLNL). The process uses ultraviolet (UV) energy, available in sunlight, in conjunction with the photocatalyst, titanium dioxide, to decompose organic chemicals into nontoxic compounds. The field experiment was developed by three federal laboratories: the National Renewable Energy Laboratory (NREL), Sandia National Laboratory (SNLA), and LLNL. The US Department of Energy funded the experiment. The objectives of the pilot-scale study included the advancement of the solar technology into a nonlaboratory waste-remediation environment the compilation of test data to help guide laboratory research and future demonstrations and the development of safe operational procedures. Results of the pilot study are discussed, emphasizing the effect of several process variables on the system performance. These variables include alkalinity, catalyst loading, flow velocity through the reactor, and incident solar UV radiation. The performance of the solar detoxification process are discussed as it relates to concentrating and nonconcentrating collectors.
Author: Jay H. Lehr
Publisher: John Wiley & Sons
Published: 2004-07-22
Total Pages: 1283
ISBN-13: 0471655465
DOWNLOAD EBOOKWiley's Remediation Technologies Handbook: Major Contaminant Chemicals and Chemical Groups, extracted from the Enviroglobe database, consists of 368 chemicals and chemical groups. This book lists in alphabetical order these chemical and chemical groups along with the numerous technologies, many of which are patented, or trademarked techniques, to remediate them. A short description of each of these technologies is provided along with appropriate references. Wiley's Remediation Technologies Handbook: Major Contaminant Chemicals and Chemical Groups: Covers the most important chemical and chemical groups that are found to pollute the environment, and the ways to remediate them. Gives succinct abstract describing the numerous technologies used to clean-up a wide range of pollutants. Provides the uses and limitations of each technique. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.