Download or read book Air Stripping of Aqueous Solutions written by Jim Rawe and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Stripping of Aqueous Solutions written by Jim Rawe and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of Volatile Organic Compounds in Aqueous Solutions Through Combined Air Stripping and Gas phase Carbon Adsorption written by Sok Leng Khor and published by . This book was released on 1989 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Packed Tower Air Stripping of Trichloroethylene from Dilute Aqueous Solution written by James M. Gossett and published by . This book was released on 1980 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PACKED TOWER AIR STRIPPING OF TRICHLOROETHYLENE FROM DILUTE AQUEOUS SOLUTION written by James M. Gossett and published by . This book was released on 1983 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air stripping is among the technologies being considered by the Air Force for TCE removal from contaminated groundwaters. The most promising stripper configuration is that of the countercurrent flow, packed column. This study was undertaken to model the performance of such a stripping reactor applied to TCE removal. Equations are presented which related efficiency to packed volume, air and liquid flows, gas/liquid partition coefficient (Henry's constant, H) and overall mass transfer coefficient (KLa). A major objective of this study was to quantify the effect of temperature and ionic strength on H, and of temperature, air flow and liquid flow on KLa. Henry's constant was measured by an equilibrium, mixed batch reactor technique, over a temperature range from 10 to 30 C, and a range of ionic strengths from 0 to 1 Molar Potassium Chloride. The effect of temperature was of practical significance; the effect of ionic strength was not. KLa was determined for 5/8 - inch (1.59 cm) plastic Pall rings over a range of temperature from 10 to 30 C. The effect was significant, and equations are presented for calculating the dependency. Air and liquid flow velocity did not affect KLa over the range examined. (Author).
Download or read book An Evaluation of Rotary Air Stripping for Removal of Volatile Organics from Ground Water written by Chris Dietrich and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotary air stripping was researched and developed to remove volatile organic contaminants from groundwater. The Traverse Group, Inc, Ann Arbor MI, was contracted under a joint funding venture by the US Coast Guard and the US Air Force to evaluate feasibility of using rotary air stripping to treat water contaminated with benzene, toluene, xylenes, trichloroethylene, 1,2,dichloroethane, and tetrachloroethylene. A site of groundwater contamination at the US Coast Guard Station, Traverse City MI provided a readily available source of contaminated water for this work. A prototype rotary air stripper (RAS), manufactured specifically for this project, was installed onsite in Traverse City MI. The RAS (consisting of a packed bed 1.7 feet in diameter by 1.2 feet thick) was evaluated over a range of contaminant concentrations (63 to 19,000 ppb), liquid flow rates (50 to 120 gpm), air to water ratios (10:1 to 170:1 vol/vol), and rotor speeds (365 to 875 rpms). The effect of each parameter on removal efficiency was analyzed. Generally, removal efficiencies in excess of 99 percent were achieved for all contaminants (except 1,2-DCE) at an air-to-water ratio and rotor speed of 30:1 vol/vol and 435 rpms, respectively. Keywords: Water treatment, Air stripping, Rotary Air Stripper, Hazardous materials, Rotating packed beds, Acceleration, Mass transfer coefficients, Benzene, Toluene, Xylenes, Fuel contamination, Chlorinated organics.
Download or read book EPA Environmental Engineering Sourcebook written by J. Russell Boulding and published by Routledge. This book was released on 2019-03-04 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (U.S. EPA) publishes several series of documents that provide up-to-date information about environmental site assessment and remediation. The EPA Environmental Engineering Sourcebook includes papers and bulletins that focus on remediation of soil and groundwater, making them available in a convenient form. This book compiles thirty-five documents- written by recognized leaders - on major methods and promising new techniques for hazardous waste treatment and site remediation. Each chapter evaluates the type of contaminant and site characteristics needed to select a technology for use at hazardous waste sites. The EPA Environmental Engineering Sourcebook presents EPA documents in an easy-to-use, concise format. It contains numerous graphs, charts and figures that make it an important resource for those involved in environmental protection, site remediation, and site assessment. Features Contains chapters written by recognized leaders Examines major methods as well as assesses new techniques for hazardous waste treatment and site remediation Presents information in an easy-to-use, concise format Evaluates each type of contaminant and site characteristics for selecting technology at hazardous waste sites
Download or read book Removal of Organics from Water wastewater by Membrane Air stripping written by Hassan Mahmud and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Removal and recovery of volatile organic compounds (VOCs) from industrial wastewater and groundwater has become increasingly important due to stringent environmental regulations. Membrane air-stripping (MAS), using microporous polypropylene hollow fiber membrane modules, is one of the most promising processes for this purpose. The mass transfer of water and VOCs in MAS was studied using such a module, with air-flow on the lumen side and liquid cross-flow on the shell side. Chloroform, toluene and their mixture were used as model VOCs. Water transport experiments showed that mass transport was significantly decreased when the membrane had been in contact with water for prolonged periods. It was hypothesized the increased mass transfer resistance was due to water condensation in a fraction of the membrane pores. MAS of chloroform from aqueous solutions confirmed the additional mass transfer resistance with prior exposure to water. It was concluded that membrane pores were completely air-filled at the start and became partially wetted with water after prolonged period during the MAS process. The currently existing models are able to predict the performance only for either completely air-filled or liquid-filled pores. A modification of an existing model was proposed to take into account diffusion through the partially water-filled pores, as well as the partially air-filled pores. It was found that the model predictions agreed well with the experimental data. This hypothesis also provided a plausible explanation for the conflicting literature values of the membrane mass transfer resistance. It was also found that the membrane mass transfer resistance of the partially water-filled pores was two orders of magnitude higher than that of air-filled pores. Leveque's (1928) correlation overestimates the local mass transfer coefficient in a cylindrical tube at low velocities. A modification of this correlation has been proposed to predict the local air film mass transfer coefficient at low air velocities. The proposed correlation predictions matches well with the experimental data. The overall mass transfer coefficients of chloroform obtained in this work for liquid cross-flow on the shell side were up to twice as high as those reported in the literature, even though our experiments were carried out at much lower water and air velocities. However, the air pressure drop on the lumen side was significantly higher than that for system with air flow on the shell side. The overall mass transfer coefficients did not change when the initial chloroform concentration in the feed ranged from 81 to 908 ppm. MAS process was found effective in concentrating chloroform to more than 90% from a feed aqueous solution of ppm levels. The adsorption of toluene had strong detrimental impact on the performance of the polypropylene hollow fiber module. It is hypothesized that the toluene sorption resulted in swelling of the polypropylene fibers causing a reduction of the effective pore diameter and as a result of this, the toluene transport was substantially lower than expected. Due to this effect, the presence of toluene in the binary aqueous solution with chloroform significantly reduced the mass transport of chloroform compared to that with only chloroform. Henry's law constants were determined for individual chloroform and toluene as well as for their mixtures at 23°C and are reported. The effect of initial chloroform concentrations on Henry's law constant was experimentally examined.
Download or read book An Introduction to Air Stripping to Remove VOCs from Water written by J. Paul Guyer and published by . This book was released on 2019-09-08 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil, environmental and mechanical engineers and construction managers interested in removal of volatile organic compounds from water streams using air stripping technology. Here is what is discussed:1. INTRODUCTION2. DESCRIPTION OF AIR STRIPPERS3. DESIGN METHODS4. TREATABILITY5. COMPARISON OF AIR STRIPPERS6. AIR POLLUTION CONTROL REQUIREMENTS7. FLOODING8. PROCESS CONTROL9. ECONOMIC EVALUATION10. REFERENCES.
Download or read book Volatilization of Organic Trace Contaminants by Air Stripping for Water Reclamation written by and published by . This book was released on 1982 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Air Stripping Technology for the Removal of DBCP Residues in Community and Industrial Water Supplies written by and published by . This book was released on 1983 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hazardous Waste Remediation written by Harry Freeman and published by CRC Press. This book was released on 1995-10-18 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains information of interest to those charged with selecting remediation processes for cleaning up hazardous waste from abandoned disposal sites. The individual chapters provide technology descriptions and a wealth of appropriate technical data for many specific technologies being proposed today or containing and treating wastes in, around, and under abandoned sites.
Download or read book Quarterly written by and published by . This book was released on 1983 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress in Filtration and Separation written by and published by Academic Press. This book was released on 2014-10-14 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Filtration and Separation contains reference content on fundamentals, core principles, technologies, processes, and applications. It gives detailed coverage of the latest technologies and research, models, applications and standards, practical implementations, case studies, best practice, and process selection. Extensive worked examples are included that cover basic calculations through to process design, including the effects of key variables. Techniques and topics covered include pervaporation, electrodialysis, ion exchange, magnetic (LIMS, HIMS, HGMS), ultrasonic, and more. Solves the needs of university based researchers and R&D engineers in industry for high-level overviews of sub-topics within the solid-liquid separation field Provides insight and understanding of new technologies and methods Combines the expertise of several separations experts
Download or read book Environmental Technologies and Trends written by Ravi K. Jain and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manuscript was made possible by the exceptional support provided by INSA (Institut National des Sciences Appliquees) Toulouse, the University of New Mexico and the University of Cincinnati College of Engineering. The authors, as listed in this book, took the time to prepare excellent manuscripts focusing on scientific and technical areas relevant to emerging environmental issues. These manuscripts were rigorously reviewed and refereed by scientists and engineers before inclusion in this book. An introductory chapter was prepared to summarize and integrate technical issues covered and the last chapter was written to present policy perspectives. The editors are most grateful to the contributors, sponsor organizations, and many colleagues who were kind enough to assist us in making this manuscript possible. Background information about the editors, principal authors and other contributor:s to this manuscript follows. Editors Professor Dr. Ravi K. Jain Associate Dean for Research and International Engineering College of Engineering University of Cincinnati Mail Location 0018 Cincinnati OH 45221-0018 U.S.A.
Download or read book Handbook of Water and Wastewater Treatment Technologies written by Nicholas P Cheremisinoff and published by Butterworth-Heinemann. This book was released on 2002 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Overview of Water and Wastewater; What Filtration Is All About; Chemical Additives that Enhance Filtration; Selecting the Right Filter Media; What Pressure- and Cake-Filtration Are All; Cartridge and Other Filters Worth Mentioning; What Sand Filtration is All About; Sedimentation, Clarification, Flotation, and Membrane Separation Technologies; Ion Exchange and Carbon Adsorption; Water Sterilization Technologies; Treating the Sludge; Glossary; Index.
Download or read book Environmental Technology Handbook written by James G. Speight and published by CRC Press. This book was released on 2020-02-06 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, the development of civilization has upset much of the earth’s ecosystem leading to air, land, and water pollution. The author defines pollution as the introduction of a foreign substance into an ecosystem via air, land or water. This book delves into issues that effect the everyday lives of people who come in contact with these hazards. By examining these issues, this body of work aims to stimulate debate and offer solutions to the ever-growing threat to the environment and humanity. Includes problems with each chapter, Explores issues such as control of gaseous emissions, waste recycling and waste disposal, Explains physical and thermal methods of waste management, Provides definitions and resources for future reference, Discusses the history of environmental technology.
