Download or read book Utilization of Coal Fly Ash and Grape Waste to Remove Toxic Metal Ions in Mining Waste Waters written by Emmanuel Appiah-Hagan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the studies of a variety of inexpensive adsorbents as alternative to the expensive activated carbon have received a lot of attention. The purpose of my research was primarily focused on the modification of Thunder Bay coal fly ash, the characterization of the pristine and modified fly ash and the application of modified fly ash for removal of metal ions from mine wastewater. Adsorption by grape wine material (GWM) was also investigated though not completed. Modification at low and elevated temperatures with 2.0 M NaOH yielded improvement in surface area, pore volume and cation exchange capacity. However, low-temperature modification was pursued leading to very efficient adsorbents named TBRM and TBFZ compared to the original fly ash named TB. The modified and unmodified fly ash was characterized using different techniques including ICP-OES, X-ray diffraction, specific surface analysis (Brunauer-Emmet- Teller), particle size distribution analysis and scanning electron microscopy. Surface area analysis revealed an increase of specific surface area from 1.24 (TB) to 64.34 (TBRM) and 68.98 (TBFZ) m2/g, respectively. Likewise, porosity was also induced in the modified fly ash. Cation exchange capacities were determined as 1.94, 23.48 and 29.23 meq/g for TB, TBRM and TBFZ, respectively. SEM-EDS and XPS were employed to confirm the adsorption of metal cations on the surface of the adsorbents. The performance of TBRM and TBFZ for the removal of Cu2+, Pb2+, Ni2+, Cr3+, Co2+ and Cd2+ from a synthetic cocktail solution (SCS) and tailing pond water (TPW) was compared to that of TB. Results indicated TBRM and TBFZ were more efficient in both SCS and TPW. A batch method was used to study the influential parameters of the adsorption process including contact time, pH effect, and kinetics and adsorption isotherms. Column studies were done to compliment the batch mode approach. Regeneration of TBFZ revealed a possible 3-cycle application. The equilibrium data were generally modeled by the Langmuir and Freundlich models. Also, the pseudo-second order model was found to explain the adsorption kinetics most effectively. Thermodynamic studies of Ni2+ and Cu2+ with TBFZ in SCS revealed that the adsorption process was spontaneous although endothermic with a decrease in entropy. The most efficient adsorbent TBFZ was converted into innovative concrete foam composite material TBFZ:FA:BA 0.22:0.33:0.45, for adsorption studies. Preliminary studies revealed a removal of more than 95 % of Cu2+, Pb2+, Ni2+, Cr3+, Co2+ and Cd2 in both SCS and TPW after 6 h of contact. However, the regeneration of TBFZ:FA:BA 0.22:0.33:0.45 was inefficient and further investigation ought to be carried out. Overall, the results indicate a significant potential of the modified Thunder Bay fly ash as an inexpensive and effective adsorbent for the removal of toxic metals from mine wastewater.
Download or read book REMOVAL OF HEAVY METALS IN WASTE WATER BY USING COAL FLY ASH written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research, it is aimed to remove toxic heavy metals in waste water with the help of fly ash from Çayýrhan thermal power plant. The chemical and physical properties (size distribution, specific surface area, porosity, chemical composition, etc.) of fly ash were determined. The experiments were carried out in synthetic waste water containing lead, zinc and copper metals at different concentrations with the addition of fly ash. The effects of metal concentration, agitation time, particle size, ash amount, and pH in the metal removal were examined. With the addition of even very small amount of fly ash, heavy metal removal from waste water was attained at up to 99%. Fly ash particle size has no significant effect on removal of heavy metal ions from solutions. Higher solution pH and longer treatment time were resulted better metal removal. The results also indicated that the main mechanism for metal removal was precipitation due to alkaline characteristics of fly ash and more than 90 % of metals in solutions were removed by precipitation. The pH ranges for maximum metal precipitation were 10-11, 8-10, and 10-11 for copper, zinc, and lead respectively. Very small percentages of adsorbed metal was released during the desorption test.
Download or read book Sustainable Materials for Sensing and Remediation of Noxious Pollutants written by Inderjeet Tyagi and published by Elsevier. This book was released on 2022-08-05 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to rapid urbanization and development, water get polluted by the noxious waste released from industrial, sewage and agricultural runoffs. Sustainable Materials for Sensing and Remediation of Noxious Pollutants covers two most widely used aspects in the field of wastewater i.e. sensing and rapid remediation with a possible solution of successful technology commercialization. Chapters include information on low cost materials as sensing and remediating agents for the rapid removal of noxious impurities from wastewater. It includes chapters on the sensing of noxious metals, low cost adsorbents for the removal of noxious impurities i.e. inorganic (metal ions) and organic (dyes). Additional chapters include future/upcoming scopes of work and one chapter on the general introduction of the field. The book content will be technical and focused for the audience like graduate students, academicians, researchers and industrial professionals. Sustainable Materials for Sensing and Remediation of Noxious Pollutants is single reference source for environmental scientists and engineers interested in low cost sensing and remediation strategies. - Assists readers in developing new strategies to address the issues related to sensing and remediation activities - Includes low cost materials for sensor and adsorbent development allowing professionals to make decisions based on economic considerations - Provides alternatives for the development of socioeconomically sustainable products for sensing and remediation application
Download or read book Use of Waste Fly Ash to Precipitate Heavy Metal laden Water written by Joseph W. Swearman and published by . This book was released on 2008 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Green Chemistry written by Albert Matlack and published by CRC Press. This book was released on 2001-04-03 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: With roughly 5500 references, this book may be considered more of a treatise than a mere introduction to green chemistry. Using an unconventional approach, the author provides a broad but thorough review of the subject, covering traditional green chemistry topics such as catalysis, benign solvents, and alternative feedstocks before moving on to less frequently covered topics such as chemistry of longer wear and population and the environmental chemistry. Topics such as these highlight the importance of chemistry to everyday life and demonstrate the real benefits that wider exploitation of green chemistry can have for society.
Download or read book Biosorption of Metal Contaminants Using Immobilized Biomass written by Thomas H. Jeffers and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wastewater Treatment written by Jianyu Chen and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-10-22 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the research results and applications of functional zeolite, functional ceramsite, modified montmorillonite and other functional materials in water purification areas. With abundant project experiences, the book is an essential reference for researchers and PhD students in environmental science, material science, environmental chemistry, as well as industrial engineers.
Download or read book Removal and Selective Recovery of Heavy Metal Ions from Industrial Waste Waters written by Dennis W. Darnall and published by . This book was released on 1989 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Fly Ash for the Removal of Heavy Metals from Water written by David Craig Markey and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biosorption heavy Metal Ions from Industrial mining Waste Waters written by Dennis W. Darnall and published by . This book was released on 1986 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emerging Techniques for Treatment of Toxic Metals from Wastewater written by Akil Ahmad and published by Elsevier. This book was released on 2022-08-27 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging Techniques for Treatment of Toxic Metals from Wastewater explores the different physical and chemical methods that can be used to remove toxins from wastewater, including adsorption, solvent extraction, ion exchange, precipitation, filtration and photocatalytic degradation. Bringing together contributions from leading experts in the field, the book covers each of the different techniques in detail, combining emergent research outcomes with fundamental theoretical concepts to provide a clear appraisal of the different techniques available, along with their applications. It is an essential recourse for researchers, industrialists and students concerned with the remediation of toxic metals from water and wastewater. - Covers the various techniques for metal removal and their applications in a single source - Addresses emerging technologies; chemical, physical, and biological including nanotechnology - Brings together novel techniques and their applications for enhancing large scale industrial production signposting opportunities for significant enhancements
Download or read book Removal of Heavy Metals and Carbonate as Well as Bicarbonate written by Mustafa Omar Sharrad and published by . This book was released on 2012 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of energy from fossil fuels such as coal, oil and natural gas generates large amounts of gaseous, liquid and solid wastes, including coal fly ash, which typically contains various toxic heavy metals. Yet finding a simple, cost-effective approach for the remediation of fly ash associated with conventional lime-based desulfurization is difficult, since not all of the non-biodegradable heavy metals (some of which have multiple oxidation states) can be simultaneously removed under the same conditions. Increasing numbers of coal-fired power plants have recently considered using trona for desulfurization, due to its various advantages. However, the carbonate and bicarbonate introduced into the process by trona makes the heavy metals more leachable and difficult to remove. Therefore, though challenging, it is imperative to develop a practical method for treating coal fly ashes that result from the use of trona for desulfurization. Several technologies might potentially be employed to deal with trona-associated coal fly ashes, including chemical precipitation, ion exchange, membrane filtration, electrodialysis and adsorption. Due to its high efficiency, ease of operation and the low cost and wide availability of sorbents, adsorption generally has been considered to be the most promising of these technologies. Due to the complexity of their leachates, however, conventional adsorption technology unfortunately does not work well for trona-associated coal fly ashes. This research was focused on exploring new methods to convert the oxidation states of targeted species for more efficient treatment, effectively removing these undesirable species (both cations and anions) under varying conditions. Two multifunctional agents were found to meet these requirements and the factors affecting their performance were evaluated. The thermodynamics and kinetics of these new methods, as well as their associated sorption isotherms, were studied.
Download or read book The Potential Use of South African Coal Fly Ash as a Neutralization Treatment Option for Acid Mine Drainage written by Michael John Klink and published by . This book was released on 2003 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this study firstly, was to develop a process for the co-disposal of two potentially harmful waste products, acid mine drainage (AMD) and fly ash (FA) or FA leachate from ash dams. Thereby redusing pollution and beneficiating water quality making it suitable for discharge or reuse. Furthermore, this aimed to assess the water quality of the co-disposal effluent and the co-disposal solid residues to examine the effectiveness of FA in removing metals from AMD. Lastly, to compare smaller scale experiments with bigger scale experiments.
Download or read book Economic Techniques for Effluent Treatment written by Parag Solanki and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is an essential resource for living systems, industrial processes, agricultural production and domestic use. It is one of the most precious gift of nature without which no life could survive on earth. In the recent past several studies have reported the water bodies becoming increasingly contaminated due to domestic and industrial waste. Water pollution affects our oceans, lakes, rivers, and drinking water, making it a widespread and global concern. This research focuses on synthesis of natural polymer based new resins and fly ash based zeolites for developing a cost effective technology for treatment of heavy metals, contaminated industrial waste water. Main toxic hazardous metal ions present in the various effluents are Fe, Cu, Pb, Al, Cr, Cd, Zn, Ni etc. Fly ash is byproduct of thermal power plants. This ash is waste for them so it is easily available & economy. Synthesis of zeolites from fly ash is a better way for utilization of waste fly ash for the effluent treatment.
Download or read book Utilization of Carbon and Non carbon Components of Fly Ash for Adsorption of Heavy Metal Ions written by Sibu Mathew and published by . This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Fly Ash as a Coagulant Aid for Waste Water Treatment written by John Thomas Quigley and published by . This book was released on 1968 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Utilization of Coal biomass Fly Ash in the Control and Treatment of Acid Mine Drainage written by Kevin David Penney and published by . This book was released on 2009 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
