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Removal Of Heavy Metals From Aqueous Solutions By Novel Melamine Formaldehyde Polyaminopolycarboxylic Acid Chelating Adsorbents
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Book Synopsis Removal of Heavy Metals from Aqueous Solutions by Novel Melamine-formaldehyde-polyaminopolycarboxylic Acid Chelating Adsorbents by : Ahmad Baraka
Download or read book Removal of Heavy Metals from Aqueous Solutions by Novel Melamine-formaldehyde-polyaminopolycarboxylic Acid Chelating Adsorbents written by Ahmad Baraka and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contamination of water recourses by heavy metals is a serious worldwide environmental problem. Industrial activities, mining and coal combustion are typical contamination sources. Removal of these metals from wastewater effluents is crucial as this contamination is non-biodegradable and highly toxic. Extensive research has been carried out to introduce new materials which alleviate these metals from wastewater effluents before their discharge into water bodies such as rivers and lakes. Conventional methods to remove heavy metals from wastewater include chemical precipitation, ion-exchange and chelation-adsorption. Adsorption is an important and developing research area because of the new material types available according to the application. Furthermore, it is standard process to place the adsorbent in a column and pump the wastewater through in a continuous system. It is also a cost-effective process. Chelating adsorbents are typically characterised by functional groups containing 0, N, S, and P donor atoms which coordinate to different heavy metal ions. It is necessary that the adsorbent has a high capacity and that the kinetics of adsorption is sufficiently fast. Polyaminepolycarboxylic (PAPC) acids are strong chelating agents and form stable chelates with different types of metals: transition, lanthanides and actinides. In spite of its exceptional chelating power, many of the PAPC compounds - such as DTPA (8-coordinations), CDTA (6-coordinations) and NTA (4-coordinations) - have not been thoroughly studied for use as active sites in adsorbent materials for heavy metal remediation from contaminated water effluents. Furthermore, the effect of the number of coordination groups on the adsorption behaviour has not been investigated. Use of these strong chelating agents (PAPC) for heavy metal removal by a polymeric adsorbent is presented in this study, with discussion of the chelation mechanism and affinity. The PAPC chelating agents were anchored on melamineformaldehyde (MF) gel. Although MF gel has suitable chemical and physical properties allowing the production of an adsorbent for heavy metal removal, it has not been studied. MF gel is porous and its matrix has a suitable platform to functionalize with some chelating compounds. PAPC-modified melamine-formaldehyde matrix is easy to produce compared to conventional chelating resins based on styrene/divinylbenzene. In this work, melamine-formaldehyde-polyaminepolycarboxylic acid (MF-PAPC) chelating adsorbents were synthesised by anchoring polyaminepolycarboxylic acids (PAPC) to melamine by the reaction of the carboxylic group of PAPC with a primary amine group of melamine forming a covalent amide bond during MF matrix formation.
Book Synopsis Removal of Heavy Metals from Aqueous Solutions Using Local Adsorbents by : Moza S. Sharyani
Download or read book Removal of Heavy Metals from Aqueous Solutions Using Local Adsorbents written by Moza S. Sharyani and published by . This book was released on 2005 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2008 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Home Laundering by : Elizabeth A. Rivers
Download or read book Home Laundering written by Elizabeth A. Rivers and published by . This book was released on 1957 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Methods for a Textile Laboratory by : J. William Weaver
Download or read book Analytical Methods for a Textile Laboratory written by J. William Weaver and published by AATCC. This book was released on 1984 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Actinide Separations by : James D. Navratil
Download or read book Actinide Separations written by James D. Navratil and published by . This book was released on 1980 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Manual of the American Association of Textile Chemists and Colorists by :
Download or read book Technical Manual of the American Association of Textile Chemists and Colorists written by and published by . This book was released on 1995 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 2021 Technical Manual of the American Association of Textile Chemists and Colorists by : Aatcc
Download or read book 2021 Technical Manual of the American Association of Textile Chemists and Colorists written by Aatcc and published by . This book was released on 2021-01-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 2021 AATCC Technical Manual is a publication of test methods and evaluation procedures developed by the AATCC Research
Book Synopsis Neurotransmitter Release by : Hugo J. Bellen
Download or read book Neurotransmitter Release written by Hugo J. Bellen and published by Oxford University Press, USA. This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with background information on neurotransmitter release. Emphasis is placed on the rationale by which proteins are assigned specific functions rather than just providing facts about function.