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Removal Of Inorganic Mercury Ii From Aqueous Solution By Chelate Complexation And Activated Carbon Adsorption
Download Removal Of Inorganic Mercury Ii From Aqueous Solution By Chelate Complexation And Activated Carbon Adsorption full books in PDF, epub, and Kindle. Read online Removal Of Inorganic Mercury Ii From Aqueous Solution By Chelate Complexation And Activated Carbon Adsorption ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Removal of inorganic mercury (II) from aqueous solution by chelate complexation and activated carbon adsorption by : Victor William Wehman
Download or read book Removal of inorganic mercury (II) from aqueous solution by chelate complexation and activated carbon adsorption written by Victor William Wehman and published by . This book was released on 1973 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improving activated carbon removal of mercury II by carbon treatment and chelate complexation by : Jerald L. Schnoor
Download or read book Improving activated carbon removal of mercury II by carbon treatment and chelate complexation written by Jerald L. Schnoor and published by . This book was released on 1974 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Removing mercuric chloride from aqueous solution by complexation and activated carbon adsorption by : Raymond Henry Austin
Download or read book Removing mercuric chloride from aqueous solution by complexation and activated carbon adsorption written by Raymond Henry Austin and published by . This book was released on 1975 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mercury (II) Removal from Aqueous Solution by Activated Carbon by : Joel D. Williams
Download or read book Mercury (II) Removal from Aqueous Solution by Activated Carbon written by Joel D. Williams and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Adsorption Handbook by : Paul N. Cheremisinoff
Download or read book Carbon Adsorption Handbook written by Paul N. Cheremisinoff and published by Butterworth-Heinemann. This book was released on 1978 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by TPRC at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemina tion phases of the activity was transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we have concluded that it will be in the interest of all concerned if the printing and distribution of the volume were handled by a well-known publishing house to assure improved service and better communication. Hence, effective with this Volume 18, Masters Theses in the Pure and Applied Sciences will be disseminated on a worldwide basis by Plenum Publishing Corporation of New York. All back issues can also be ordered from Plenum. As we embark on this new partnership with Plenum, we also initiate a new venture in that this important annual reference work now covers Canadian universities as well as those in the United States. We are sure that this broader base will greatly enhance the value of these volumes.
Download or read book Water Research written by and published by . This book was released on 1981 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Activated Carbon Surface Chemistry Modification on the Adsorption of Mercury from Aqueous Solution by : Emily Kaye Faulconer
Download or read book Effects of Activated Carbon Surface Chemistry Modification on the Adsorption of Mercury from Aqueous Solution written by Emily Kaye Faulconer and published by . This book was released on 2012 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg), a naturally occurring element, is toxic and can lead to negative health impacts for humans and ecosystems. Activated carbon adsorption is effective in treating Hg-laden aqueous effluent for safe discharge. Two modifications of commercially available activated carbon were investigated: iron impregnation to allow for magnetic sorbent recapture and wet chemical oxidation to enhance aqueous Hg capture. The modified carbons were characterized by nitrogen adsorption-desorption, XRD, pHpzc, vibrating sample magnetometry, elemental analysis, and total acidity titration. The 3:1 C:Fe magnetic powdered activated carbon (MPAC) retained a high surface area of 790 m2/g and was 95% magnetically recoverable, with the iron present primarily as maghemite. The characteristics of the surface oxygen modified carbons varied based on the nature of the modifying reagent and its concentration. The modified carbons were applied to trace level Hg solutions (100 μg/L). The 3:1 MPAC achieved the highest adsorption capacity, reaching 91% Hg removal with 2% volatilized and 84% adsorbed. Adsorption occurs primarily as chemisorption, thus allowing for non-hazardous residuals disposal until reaching a loading of greater than 800 μg Hg/ g MPAC.
Book Synopsis Preparation of Activated Carbon from Waste Oil Sands Coke by Microwave and Conventional Chemical Activation for Removal of Mercury (ii) from Aqueous Solution by : 施東甫
Download or read book Preparation of Activated Carbon from Waste Oil Sands Coke by Microwave and Conventional Chemical Activation for Removal of Mercury (ii) from Aqueous Solution written by 施東甫 and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Organic Ligands on the Chemical Interaction of Mercury (II) and Activated Carbon in Dilute, Aqueous Solution by : Melanne McGeehin
Download or read book The Effect of Organic Ligands on the Chemical Interaction of Mercury (II) and Activated Carbon in Dilute, Aqueous Solution written by Melanne McGeehin and published by . This book was released on 1984 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mercury Adsorption on Biosorbents and an Analytical Method to Determine Ionic Mercury Using SP-ICPMS by : Nur Shadia
Download or read book Mercury Adsorption on Biosorbents and an Analytical Method to Determine Ionic Mercury Using SP-ICPMS written by Nur Shadia and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researching efficient removal techniques is essential due to the toxicity of heavy metals, even at low concentrations, and their pervasiveness in a variety of environmental settings. According to WHO, Mercury is one of the most dangerous pollutants for human health. It causes severe damage to the ecosystem and other living beings. But because of its favorable physical-chemical properties, it has been widely used in the industrial activities. Unfortunately, several rivers and aquifers are getting contaminated by this hazardous chemical and inevitably putting importance on how to solve this problem. Most importantly a cost effective and environmentally friendly methods are needed to get a sustainable solution to this contamination. In the first phase of this study, mercury treatment from aqueous solution using two bio-sorbents were investigated. Pinecones and pecan shells were chosen as bio-sorbents because of their natural abundance and cost-free availability. To the best of my knowledge, though some of the studies has been performed to remove some heavy metals by utilizing these two agricultural waste materials, none of the previous study investigated this two-potential bio-sorbents for removing mercury from water solutions. In addition, there is a chance that metals and other ions will coexist in the environment, which is a complicated situation where there would be a competition among the ions for active sites on the sorbent surface. This study presents the effective removal of inorganic divalent mercury (Hg2+) at a trace level concentration through adsorption on the grounded pinecones (PC), pecan shells (PS) and chemically, by acid and base, modified pinecones, and pecan shells. To evaluate the surface chemistry and reactivity of the bio-sorbents, and presence of functional groups various analyses were performed, including determining the point of zero charge (pHpzc) and conducting FTIR analysis. Several factors that could influence adsorption efficiency, including pH, adsorbent dosage, ionic strength, contact time and metal concentration were examined. Results indicated that the chemical modification led to changes in mercury removal by the bio-sorbents, possibly attributed to the change in surface area, porosity, and functional groups. The adsorption efficiency for both bio-sorbents increased as modified by acid. For 1 mg/mL of bio-sorbent dose the Hg2+ removal efficiency was found 80% and 90% for PC and PS, respectively, while increased to 92% and 95% for acid modified pinecone (APC) and acid modified pecan shells (APS) at room temperature and optimum pH condition. However, the base activated PC and PS were found to be less effective than the unmodified materials. Furthermore, all of the materials tested found to be following the Freundlich's adsorption isotherm in aqueous solutions. In the second phase of this study, the focus was on developing a method to monitor very low concentration of Hg2+ in the environment. Studies indicate that ionic mercury can be readily converted to organic mercury through methylation, and as organic mercury builds up in the food chain, it is very harmful to human health even at a low level. Thus, to provide appropriate protection, the US Environmental Protection Agency (USEPA) has set the maximum contamination level of mercury in drinking water at 2.0 ppb. As a result, it becomes very crucial to invent a very sensitive and selective approach for monitoring the ultra-low concentration of Hg2+ in the environment. This study aims to create an incredibly sensitive assay for the detection and quantification of Hg2+ using the single-particle inductively coupled plasma mass spectrometry (spICP-MS). The well-known thymine (T)- Hg2+ -T complex forms when AuNPs modified with single-stranded DNA are exposed to Hg2+ and this formation causes AuNPs to aggregate. By determining the overall reduction in the number of identified AuNPs or NP aggregates the degree of aggregation can be quantified. This spICP-MS-based approach has been reported to obtain a substantially lower detection limit of 0.031 part-per-trillion (155 fM) and a larger (10,000-fold) linear range up to 1 ppb when compared to most other Hg assays that use the similar principle of aggregation-dispersion with DNA modified AuNPs. Besides, this approach showed low interference from the sample matrix. Considering the aforementioned advantages, this study focuses on quantifying aqueous Hg2+ using single stranded DNA-gold nanoparticles conjugates with the help of single-particle inductively coupled plasma mass spectrometry (spICP-MS).
Book Synopsis Mercury (II) Removal from Aqueous Solution by Ion Exchange by : Keith William Fife
Download or read book Mercury (II) Removal from Aqueous Solution by Ion Exchange written by Keith William Fife and published by . This book was released on 1977 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Management for Developing Countries by :
Download or read book Environmental Management for Developing Countries written by and published by . This book was released on 1986 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Activated Carbon Surface Oxygen Functionality on Elemental Mercury Adsorption from Aqueous Solution by :
Download or read book Influence of Activated Carbon Surface Oxygen Functionality on Elemental Mercury Adsorption from Aqueous Solution written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1987 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gas, Water and Solid Waste Treatment Technology by : Zhien Zhang
Download or read book Gas, Water and Solid Waste Treatment Technology written by Zhien Zhang and published by MDPI. This book was released on 2021-09-01 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a variety of treatment technologies, such as physical, chemical, and biological methods for the treatment of gas emissions, wastewater, and solid waste. It provides a useful source of information for engineers and specialists, as well as for undergraduate and postgraduate students, in the areas of environmental science and engineering.
Book Synopsis Simultaneous Immobilization of Mercury and Polychlorinated Biphynyls from Water Or Sediment Using Polysulfide-rubber-coated Activated Carbon by : Eun Ah Kim
Download or read book Simultaneous Immobilization of Mercury and Polychlorinated Biphynyls from Water Or Sediment Using Polysulfide-rubber-coated Activated Carbon written by Eun Ah Kim and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research explores a new method of utilizing activated carbon as a multifunctional amendment to treat mercury and polychlorinated biphenyls (PCBs). The multifunctional material, named polysulfide-rubber polymer-coated activated carbon (PSR-AC), was developed by coating a reactive polymer for mercury on activated carbon. The material achieves multiple functions by facilitating two different reaction sites, the PSR polymer surface and the AC surface, for mercury and hydrophobic compounds respectively. This dissertation focuses on several lines of work that includes the development of polysulfide-rubber as a sorbent, the investigation of a favorable interaction between the PSR polymer and mercuric ions, and the study of hydrophobic interactions between AC and hydrophobic compounds. The results are intended to serve as a basis from which to estimate the chemical stabilities of the immobilized contaminants on the PSR-AC surface. This study was started from the simplest clean water system with only mercuric chloride, and was evolved to include natural organic matter and sediment particles. PSR-AC was prepared by synthesizing the polymer and solvent casting of the dissolved PSR polymer with AC. This process resulted in a polymer coating formed by the gradual invasion of the AC by the polysulfide-rubber polymer. High sulfur loading on activated carbon enhanced mercury adsorption, contributing to a three orders of magnitude reduction in mercury concentration. X-ray photoelectron spectroscopy and Fourier transform infra-red spectroscopy results revealed Hg-S bond formation between PSR-AC and mercuric ions. [mu]-X-ray absorption near edge spectroscopic analyses of the immobilized mercury on the PSR-AC surface suggests the chemical bond with mercury on the surface is a combination of Hg-Cl and Hg-S interactions. [mu]-X-ray fluorescence images of the PSR-AC cross-section elucidated that mercuric ions migrate 0~100 [mu]m inward from the exterior of the particle during three months of treatment in HgCl2 aqueous solution. The presence of a surface-mediated chemical reaction was supported by the [mu]-XANES analysis, showing a large fraction of the total mercuric ions within the PSR-AC particle was in the HgS form. Two mathematical models, based on either a Langmuir sorption isotherm or a kinetic sorption approach, were devised to predict the physicochemical processes involved in the intra-particle migration of mercury in a PSR-AC particle. The results indicate that the transport pathways partly include a non-equilibrium state between PSR and mercuric ions that allows a faster transport rate than when a pure equilibrium state was utilized. The PCB sorption efficiencies of PSR-ACs compared to those of ACs were examined to understand the effect of the polymer-coating on the hydrophobicity of the PSR-AC particle. Comparable PCB removals were observed with sulfur loading levels of less than 8 wt.%. The relative significances of the PSR surface and a hydrophobic surface in sorbing dissolved organic matter-bound mercury (Hg-DOM) removal were also tested using PSR-coated polyethylene (PE). The results suggested higher reaction efficiencies of the PSR polymer per unit area. A favorable interaction between PSR and mercuric ions also improved the overall Hg-DOM removal efficiencies by PSR-AC. The AC and PSR-AC achieved effective mercury removal also from sediment porewater with and without the sediment particles in contact with the sorbents. One month of sediment contact with AC and PSR-AC in quiescent conditions decreased the sediment methylmercury concentrations by 76% and> 91%, respectively. These results prompt further research activities regarding the short- and long-term effects of PSR-AC sediment treatments on mercury bioavailability.
