Download or read book Towards a Mechanistic Understanding of Development and Design of Cyclodextrin Polymers as Emerging Adsorbents to Remove Per and Polyfluoroalkyl Substances from Water written by Casey Ching and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploring the Factors that Determine the Adsorption of Per and Polyfluoroalkyl Substances on Conventional Adsorbents and Novel Cyclodextrin Polymers with Different Surface Properties written by Ri Wang and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the concerns over the ubiquity and toxicity of per- and polyfluoroalkyl substances (PFASs) grow, research has focused on finding both technically and financially efficient PFAS remediation technologies. When evaluating certain technologies, research has focused on the removal of perfluoroalkyl acids from water, but contaminated groundwater often contains complex mixtures of diverse groups of PFASs. Utilizing a more comprehensive method to evaluate the performance of different PFAS treatment technologies involving the consideration of environmental matrix complexity can bring more useful insights into practical application. Adsorption-based processes are among the most promising technologies available for PFAS removal from water. The conventional adsorbents including activated carbon (AC) and anion exchange (AE) resins have been implemented in pilot or full-scale processes targeting PFAS removal from water. Emerging adsorbents, including novel β-cyclodextrin polymers (CDPs), have also exhibited potential for PFAS removal from water. The efficacy of CDPs on PFAS removal and the importance of varying surface properties of different CDPs on determining the affinity and selectivity to contaminants have been demonstrated. However, the mechanisms by which adsorbates bind to CDPs remains poorly understood. More research is needed to elucidate the mechanisms about the relative contributions of hydrophobic and electrostatic interactions for the adsorption of PFASs on CDPs.Two studies were designed to systematically explore the potential of conventional adsorbents and novel CDPs to remove mixtures of PFASs from contaminated groundwater and probe the adsorption binding mechanisms for anionic PFAS removal on CDPs. The first study aimed to evaluate the performance of five adsorbents including one AC, one AE resin and three different CDPs with varying surface charges to remove 68 PFASs in contaminated groundwater integrating a suspect screening approach. The PFAS removal performance of the adsorbents was evaluated with respect to adsorption affinity, kinetics, and selectivity. This evaluation provided insights on the factors that determine PFASs adsorption, which can be associated with the increasing length of the perfluorinated tail or could be more strongly related to properties of the head group. The second study aimed to evaluate the relative contributions of hydrophobic and electrostatic interactions on the adsorption of anionic PFASs by CDPs under controlled experimental conditions in nanopure water and different salt-amended nanopure water matrices. This study provided new insights into the adsorption binding mechanisms between anionic PFASs and CDPs as a function of chain length, and revealed the effects of different types and concentrations of inorganic constituents on the adsorption mechanisms. Together, the research described in this thesis furthers the understanding of different PFAS removal patterns by different adsorbents, and the understanding of anionic PFAS adsorption mechanisms on CDPs. These findings can serve as guidance and knowledge support on the future development and practical application of CDPs for different PFAS species under a range of environmental conditions.
Download or read book Characterization and Evaluation of Cyclodextrin Polymers as Alternative Adsorbents to Activated Carbon for Micropollutant Removal During Water and Wastewater Treatment written by Yuhan Ling and published by . This book was released on 2019 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Polymers Based Green Adsorbents for Water Treatment written by Susheel Kalia and published by Elsevier. This book was released on 2021-08-22 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Polymers-Based Green Adsorbents for Water Treatment focuses on the recent development of novel polymeric adsorbents that are green and eco-friendly or biodegradable in nature. The book reviews the synthesis, properties and adsorption applications of natural and green polymer-based adsorbents. It discusses adsorption processes in biopolymer systems, remediation technologies developed to remove environmental pollutants, the usage of natural polymer-based cost-effective and green novel adsorbent materials for the removal of organic and inorganic contaminants, and the efficiency of functionalized polymers, nanosorbents, hydrogels, composites, graft copolymers in the sorption of various pollutants from the environment as well as from the industrial effluents. Researchers working on environmental remediation need a single book, where all data on natural and green adsorbents for water treatment are discussed comprehensively. Natural Polymers-Based Green Adsorbents for Water Treatment addresses this need by providing world-wide leading experts' observations and research. So, this book is a valuable reference for early-career scientist, academic researchers and graduate students in chemical engineering and material science. - Presents step-by-step review of processing and modification of natural polymers and their applications in water remediation - Analyzes data on natural and green adsorbents for water treatment, meanwhile provides world-wide experts' knowledge to pave the way for further research - Includes extensive tables, graphs, figures, bibliographies and references to enhance key concepts
Download or read book Innovative Polymeric Adsorbents written by Kyoichi Saito and published by Springer. This book was released on 2018-04-05 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the reader with a story-based narrative of discovery and development of radiation-induced graft polymerization. The report presented here accomplishes this by relating the inspiring account of research and development based on long-term collaboration among a professor, an engineer, and an entrepreneur. Their goal, ultimately successful, was to come up with a method for grafting functional polymer chains onto existing trunk polymers. The desired outcome was to produce feasible forms for practical use as adsorbents such as porous hollow-fiber membranes, porous sheets, nonwoven fabrics, and fibers. Adsorbents that specifically and efficiently bind to target ions and molecules are essential for capturing uranium species in seawater and antibody drugs in biological fluids and for removing metal ions from ultrapure water and radioactive cesium ions from contaminated water. This unique volume, with its clearly written text and many illustrative figures and diagrams, demonstrates the advantages of the high-adsorption capacity and rate and the easy handling of new polymeric adsorbents over conventional adsorbents. The dynamic behavior of graft chains as described here is certain to appeal especially to chemists, physicists, and material scientists as well as to other readers with an interest in this valuable subject.
Download or read book Developing Cost effective Specialty Adsorbents to Meet Emerging Challenges of Pollutant Removal in Surface Water Systems written by Diana L. Ordonez and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of clean water is emphasized under the United Nations goals for sustainable development (SDGs), enlightening the acute need of developing new sustainable technologies in all disciplines. SDGs have urged all engineers in the 21st century to mitigate pollution of drinking water sources and prevent all receiving waterbodies from the impact of agriculture discharge, wastewater effluent, and stormwater runoff. Current water matrix constituents of concern include traditional pollutants (i.e., total nitrogen and total phosphate), natural organic matters (i.e., total organic carbon (TOC), tannic acid), heavy metals (i.e., copper, calcium), and harmful algae toxins (i.e., microcystin), as well as contaminants of emerging concern (i.e., Per- and polyfluoroalkyl substances (PFAS), pharmaceuticals, endocrine disrupting chemicals, personal care products). This study presents the most recent development of a suite of in situ cost-effective, scalable, and fit-for-purpose specialty adsorbents to simultaneously remove PFAS, TOC, total nitrogen, total phosphate, and microcystin through synergistic effect of different specialty ingredients. It is also aimed to clarify physiochemical removal mechanisms for the removal of color (tannic acid), nutrients (phosphate and nitrate), contaminants of emerging concern (PFAS) and algal toxins (Microcystin LR). The originality of these specialty adsorbents with chemical, molecular, and even microbial insights falls within the sustainable nature of specialty ingredients and wide availability tailored for scalable applications in any landscape.
Download or read book DEVELOPMENT OF NOVEL ADSORBENTS FOR THE REMOVAL OF EMERGING CONTAMINANTS FROM WATER AND WASTEWATER written by Bikash Bhattarai and published by . This book was released on 2015 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Novel Adsorbents for the Removal of Emerging Contaminants from Water written by Bikash Bhattarai and published by . This book was released on 2011 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tuning Host guest Chemistry in the Development of Adsorbents for Remediation of Organic Pollutants written by leilei xiao and published by . This book was released on 2019 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Technology in Dye containing Wastewater written by Ali Khadir and published by Springer. This book was released on 2023-04-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The textile industry is among the most significant polluters of water owing to the existence of various types of pollution streams generated by printing processes and textile dyeing. The book begins by documenting various types of Poly (vinyl alcohol) PVA-derived adsorbents (gels, fibers, films, composite particles), membranes, and photocatalysts in combination with conventional adsorbents, polymers, carbonaceous and metallic materials and their use in elimination of dyes from contaminated water. It follows by discussing different properties of nanocomposite membranes such as hydrogels, xerogels and aerogels used in this purpose. Also, different polymer – based adsorbents such as ceramic adsorbent, clay, hydrogels, starch, cellulose, chitosan, alginates, etc are presented in this book.
Download or read book Cyclodextrin Chemistry written by Zheng-Yu Jin and published by World Scientific. This book was released on 2013 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyclodextrin Chemistry covers the preparation of cyclodextrins and cyclodextrin derivatives (CDs), and their applications in industrial and non-industrial areas. An overall theme in the book is the screening of cyclodextrin glycosyltransferase (CGTase), the preparation of sugar-branched cyclodextrins and CDs, and the use of CDs for reconstructing various supermolecule systems. The specific content also includes preparation methods, spectroscopy techniques for CDs analysis, and potential applications in food packaging, nutrient fortification, medicine, cosmetics, textiles, chemicals, feed, agriculture, and environment. It summarizes the research merit of CDs in the past twenty years and also emphasizes hot topics and important areas of cyclodextrin chemistry in the future. Contents: Introduction (Jun-Rong Huang, Hai-Ning Zhuang and Zheng-Yu Jin); Enzymes in Preparing Cyclodextrins (Sheng-Jun Wu, Xiu-Ting Hu, Jin-Moon Kim and Jing Chen); Preparation and Analysis of Cyclodextrin (An-Wei Cheng, Jin-Peng Wang and Zheng-Yu Jin); Preparation of Branched-Cyclodextrins (Xing Zhou, Yao-Qi Tian and Zheng-Yu Jin); Preparation and Analysis of Cyclodextrin Derivatives (Chao Yuan, Yu-Xiang Bai and Zheng-Yu Jin); Basic Application of Cyclodextrins in Supermolecule Chemistry (Tao Feng, Ai-Quan Jiao and Zheng-Yu Jin); Use of Cyclodextrins in Food, Pharmaceutical and Cosmetic Industries (Yao-Qi Tian, Xing Zhou and Zheng-Yu Jin); Application of Cyclodextrins in Non-industrial Areas (Xue-Hong Li and Zheng-Yu Jin). Readership: Researchers and technicians in food, pharmaceutical, cosmetic and chemical industries, as well as in non-industry areas such as agriculture and environmental engineering, supermolecule and analytical chemistry.
Download or read book Treatment of Micropollutants in Water and Wastewater written by Jurate Virkutyte and published by IWA Publishing. This book was released on 2010-08-14 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few years there has been a growing concern over the increasing concentration of micropollutants originating from a great variety of sources including pharmaceutical, chemical engineering and personal care product industries in rivers, lakes, soil and groundwater. As most of the micropollutants are polar and persistent compounds, they are only partially or not at all removed from wastewater and thus can enter the environment posing a great risk to the biota. It is hypothesized that wastewater is one of the most important point sources for micropollutants. Treatment of Micropollutants in Water and Wastewater gives a comprehensive overview of modern analytical methods and will summarize novel single and hybrid methods to remove continuously emerging contaminants - micropollutants from the aqueous phase. New trends (e.g. sensor technology, nanotechnology and hybrid treatment technologies) are described in detail. The book is very timely because the new techniques are still in the development phase and have to be realized not only in the laboratory but also on a larger scale. The content of the book is divided into chapters that present current descriptive and analytical methods that are available to detect and measure micropollutants together with detailed information on various chemical, biological and physicochemical methods that have evolved over the last few decades. Treatment of Micropollutants in Water and Wastewater will also enable readers to make well informed choices through providing an understanding of why and how micropollutants must be removed from water sources, and what are the most appropriate and available techniques for providing a cost and technologically effective and sustainable solutions for reaching the goal of micropollutant-free water and wastewater. The book will be suitable for water and wastewater professionals as well for students and researchers in civil engineering, environmental engineering and process engineering fields.
Download or read book The History of Cyclodextrins written by Grégorio Crini and published by Springer Nature. This book was released on 2020-09-29 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the historical development of Cyclodextrins by scientists who have made outstanding contribution to the field. Cyclodextrins are safe, cage-like molecules that have found major applications in many industrial sectors such as medicine, food, agriculture, environment and chemistry.
Download or read book Emerging and Eco Friendly Approaches for Waste Management written by Ram Naresh Bharagava and published by Springer. This book was released on 2018-05-25 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid industrialization is a serious concern in the context of a healthy environment. With the growth in the number of industries, the waste generated is also growing exponentially. The various chemical processes operating in the manufacturing industry generate a large number of by-products, which are largely harmful and toxic pollutants and are generally discharged into the natural water bodies. Once the pollutants enter the environment, they are taken up by different life forms, and because of bio-magnification, they affect the entire food chain and have severe adverse effects on all life forms, including on human health. Although, various physico-chemical and biological approaches are available for the removal of toxic pollutants, unfortunately these are often ineffective and traditional clean up practices are inefficient. Biological approaches utilizing microorganisms (bacterial/fungi/algae), green plants or their enzymes to degrade or detoxify environmental pollutants such as endocrine disruptors, toxic metals, pesticides, dyes, petroleum hydrocarbons and phenolic compounds, offer eco- friendly approaches. Such eco-friendly approaches are often more effective than traditional practices, and are safe for both industry workers as well as environment. This book provides a comprehensive overview of various toxic environmental pollutants from a variety natural and anthropogenic sources, their toxicological effects on the environment, humans, animals and plants as well as their biodegradation and bioremediation using emerging and eco-friendly approaches (e.g. Anammox technology, advanced oxidation processes, membrane bioreactors, membrane processes, GMOs), microbial degradation (e.g. bacteria, fungi, algae), phytoremediation, biotechnology and nanobiotechnology. Offering fundamental and advanced information on environmental problems, challenges and bioremediation approaches used for the remediation of contaminated sites, it is a valuable resource for students, scientists and researchers engaged in microbiology, biotechnology and environmental sciences.
Download or read book Principles of Adsorption and Adsorption Processes written by Douglas M. Ruthven and published by John Wiley & Sons. This book was released on 1984-06-05 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first up-to-date summary and review for the fundamental principles and industrial practice of adsorption separation processes in more than 30 years. Emphasizes the understanding of adsorption column dynamics and the modeling of adsorption systems, as well as fundamental aspects of kinetics and equilibria.
Download or read book Porous Organic Frameworks written by Guangshan Zhu and published by Springer. This book was released on 2014-11-28 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the design, synthesis, characterization and applications of porous organic frameworks (POFs). Special emphasis is placed on the utilization of porous materials for CO2 capture and CH4 and H2 storage, which have promising potential for addressing the issues of environmental degradation and climate change. It also includes two chapters introducing the properties of POFs and defining the principles of synthesis, as well as a chapter dealing with post-modified POFs. This book is intended for those readers who are interested in porous materials and their applications. Guangshan Zhu is a professor at the College of Chemistry, Jilin University, China.
Download or read book Biermann s Handbook of Pulp and Paper written by Pratima Bajpai and published by Elsevier. This book was released on 2018-05-17 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biermann's Handbook of Pulp and Paper: Raw Material and Pulp Making, Third Edition is a comprehensive reference for industry and academia covering the entire gamut of pulping technology. This book provides a thorough introduction to the entire technology of pulp manufacture; features chapters covering all aspects of pulping from wood handling at the mill site through pulping and bleaching and pulp drying. It also includes a discussion on bleaching chemicals, recovery of pulping spent liquors and regeneration of chemicals used and the manufacture of side products. The secondary fiber recovery and utilization and current advances like organosolv pulping and attempts to close the cycle in bleaching plants are also included. Hundreds of illustrations, charts, and tables help the reader grasp the concepts being presented. This book will provide professionals in the field with the most up-to-date and comprehensive information on the state-of- the-art techniques and aspects involved in pulp making. It has been updated, revised and extended. Alongside the traditional aspects of pulping and papermaking processes, this book also focuses on biotechnological methods, which is the distinguishing feature of this book. It includes wood-based products and chemicals, production of dissolving pulp, hexenuronic acid removal, alternative chemical recovery processes, forest products biorefinery. The most significant changes in the areas of raw material preparation and handling, pulping and recycled fiber have been included. A total of 11 new chapters have been added. This handbook is essential reading for all chemists and engineers in the paper and pulp industry. - Provides comprehensive coverage on all aspects of pulp making - Covers the latest science and technology in pulp making - Includes traditional and biotechnological methods, a unique feature of this book - Presents the environmental impact of pulp and papermaking industries - Sets itself apart as a valuable reference that every pulp and papermaker/engineer/chemist will find extremely useful
