Recent Drifts in PH-Sensitive Reverse Osmosis PDF Download
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Author: Gehan Mohamed Ibrahim
Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
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Book Description
Preparation of some smart PAm-ZTS pH-responsive membranes, via reactions between ZTS and PAm under different conditions, was conducted for testing pressure-driven reverse osmosis membranes (PDROMs) in active rejection of Ce4+, Pr3+, Sm3+, Gd3+, Dy3+, and Ho3+ ionic lanthanide species in their 3+ and 4+ states. Recent theoretical models to designate the membrane operations were mathematically itemized, after selective characterization of the PDROMs. The pH scale response of the membrane was confirmed using static adsorption and hydraulic pervasion result estimations. The flux across the PAm-ZTS membrane decreased with the lowering pH value, with drastic decreases between pH 4 and 7, and was both reversible and durable with pH shifts between ~3 and ~8. At lower pH 3, the individual pores were in a closed-state due to the prolonged structure of the amide chains on the porous surfaces. In contrast, at pH 8, the higher pH value, the membrane pores were in an open-state format, because of the collapsed structures of the amide chains. This grants a clear possible approach for manufacturing some pH-responsive composite membranes and inspires further design for their stimuli-responsive actions by incorporating molecularly designed macromolecules, synthesized by controlled polymerization.
Author: Gehan Mohamed Ibrahim
Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
Get Book Here
Book Description
Preparation of some smart PAm-ZTS pH-responsive membranes, via reactions between ZTS and PAm under different conditions, was conducted for testing pressure-driven reverse osmosis membranes (PDROMs) in active rejection of Ce4+, Pr3+, Sm3+, Gd3+, Dy3+, and Ho3+ ionic lanthanide species in their 3+ and 4+ states. Recent theoretical models to designate the membrane operations were mathematically itemized, after selective characterization of the PDROMs. The pH scale response of the membrane was confirmed using static adsorption and hydraulic pervasion result estimations. The flux across the PAm-ZTS membrane decreased with the lowering pH value, with drastic decreases between pH 4 and 7, and was both reversible and durable with pH shifts between ~3 and ~8. At lower pH 3, the individual pores were in a closed-state due to the prolonged structure of the amide chains on the porous surfaces. In contrast, at pH 8, the higher pH value, the membrane pores were in an open-state format, because of the collapsed structures of the amide chains. This grants a clear possible approach for manufacturing some pH-responsive composite membranes and inspires further design for their stimuli-responsive actions by incorporating molecularly designed macromolecules, synthesized by controlled polymerization.
Author: Taner Yonar
Publisher: BoD – Books on Demand
ISBN: 1789236207
Category : Technology & Engineering
Languages : en
Pages : 229
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Book Description
Water is accepted as the most important source of life. It is assumed that life began in water and spread from there to the whole world. But water has been polluted anthropogenically since the beginning of the industrial revolution in the late 19th century. At the end of the 20th century, most water sources cannot be used for aquaculture, irrigation, and human use. Therefore, for sustainable development, we have to protect our water sources on Earth, because it's the only planet we have!
Author: AWWA Staff
Publisher: American Water Works Association
ISBN: 1613000332
Category : Drinking water
Languages : en
Pages : 240
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Book Description
Author: Burns and Roe Industrial Services Corporation
Publisher:
ISBN:
Category : Membranes (Technology)
Languages : en
Pages : 344
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Book Description
Author: S. Sourirajan
Publisher: London : Logos
ISBN:
Category : Science
Languages : en
Pages : 612
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Book Description
Author: Zahid Amjad
Publisher: Springer
ISBN:
Category : Nature
Languages : en
Pages : 422
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Book Description
This outstanding reference is ideal for those who require in-depth and accurate information about reverse osmosis technology and water chemistry. Professionals in this rapidly expanding field will appreciate the features of this outstanding resource. The book features a full description of the RO process, a comprehensive review of membrane technology and system design, and describes the economic benefits of RO and other desalination technologies. System designers, membrane manufacturers, water purification experts, consultants, separations technologists, and chemical engineers will find Reverse Osmosis an invaluable tool.
Author: Lee Theodore Rozelle
Publisher:
ISBN:
Category : Membranes (Technology)
Languages : en
Pages : 136
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Book Description
Author: Scott Baldwin McCray
Publisher:
ISBN:
Category : Chemical processes
Languages : en
Pages : 154
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Book Description
Author: Scott Baldwin MacCray
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: American Chemical Society
Publisher: Springer
ISBN:
Category : Gardening
Languages : en
Pages : 518
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Book Description
Th i s book had its orl gl n in the sympos i urn on "Polymers for Desalination" sponsored by the Division of Polymer Chemistry of the American Chemical Society and held in September, 1971 in Wash ington D. C. at the 162nd national meeting of the Society. However, the book is not simply the proceedings of that symposium. A num ber of additional papers were contributed by other workers in the field, and the original papers presented at the symposium have, for the most part, been expanded. The book thus represents a broad cross section of membrane research and development activities in the United States and abroad within the field of reverse osmosis. The purposes of the book are to bring attention to important new developments in this field, to suggest what the next generation of reverse osmosis equipment may look like, and to indicate where fur ther research and development are needed. The vast majority of the papers collected here represent work supported by the Office of Saline Water of the United States Department of the Interior, and the emphasis here is clearly on the application of the reverse os mosis process to water purification. However, many of the concepts, methods, and conclusions are expected to be useful in other areas of membrane science and technology.
