Download or read book Alternative Adsorbents for the Removal of Polar Organic Contaminants written by Detlef R. U. Knappe and published by American Water Works Association. This book was released on 2007 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project studies the application of high-silica zeolites for the removal of polar organic contaminants, i.e., antimicrobial compounds and the fuel additive methyl tertiary-butyl ether (MTBE), from drinking water. Recently published data show that high-silica zeolites, a class of crystalline adsorbents with well defined pore sizes, exhibit considerably larger single-solute MTBE adsorption capacities than activated carbons and carbonaceous resins. The effectiveness of high-silica zeolites is compared to that of activated carbons and a carbonaceous resin.

Download or read book Removal of Polar and Emerging Organic Contaminants by Alternative Adsorbents written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The removal of polar and ionizable organic contaminants from drinking water sources is a challenge for water utilities. Prescription and non-prescription drugs are present at detectable levels in many US surface waters, and conventional water treatment processes do not provide an effective barrier for many emerging contaminants. Therefore, effective treatment technologies are required to successfully remove these contaminants from drinking water. In this study the effectiveness of alternative adsorbents for the removal of MTBE was evaluated. Additionally, adsorbent, adsorbate, and water characteristics that affect ionizable organic contaminant adsorption were identified. In the first phase of this research, the MTBE removal effectiveness of activated carbon, a carbonaceous resin and a silicalite zeolite was compared. Isotherm and short bed adsorber tests were conducted in ultrapure water and river water to obtain parameters describing MTBE adsorption equilibria and kinetics and to quantify the effect of natural organic matter (NOM) on MTBE adsorption. Both the silicalite zeolite and the carbonaceous resin exhibited larger MTBE adsorption uptakes than the tested GAC. Results showed that GAC was the most cost-competitive adsorbent when considering adsorbent usage rate only; however, the useful life of an adsorber containing silicalite zeolite was predicted to be ~5-6 times longer than that of an equally sized adsorber containing GAC. Pilot column results also showed that NOM preloading did not impair the MTBE removal efficiency of the silicalite zeolite. Thus, it may be possible to regenerate spent silicalite with less energy-intensive methods than those required to regenerate GAC. One activated carbon, one carbonaceous resin, and two high-silica zeolites were studied to evaluate their effectiveness for the removal of an emerging pollutant of concern (EPOC) mixture from lake water. Adsorption isotherm experiments were performed with environmentally relevant concentrat.

Download or read book Removal of Polar and Emerging Organic Contaminants by Alternative Adsorbents written by Alfred Armin Rossner Campos and published by . This book was released on 2008 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: alternative adsorbents, pharmaceuticals, adsorption, pH-dependent solubility.

Download or read book Emerging Compounds Removal from Wastewater written by Giusy Lofrano and published by Springer Science & Business Media. This book was released on 2012-03-31 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last years the release of emerging pollutants such as Endocrine Disruptors (EDCs), Pharmaceuticals and Personal Care Products (PPCPs) into the environment has raised great concern. While investigating how to treat emerging pollutants from water and wastewater, researchers have drawn attention on the implementation of more environmentally friendly technologies able to achieve high removal efficiency at low costs. Emerging Compounds Removal from Wastewater by Green Technologies: Natural and Solar Based Treatments introduces green chemistry in relation to these treatment technologies. More specifically, this volume: • Reviews the suitability of alternative adsorption processes that use natural adsorbents natural materials or agricultural waste in light of the inefficiency of conventional wastewater treatment plants; • Evaluates the potential of constructed wetlands for the removal of some categories of trace contaminant of worldwide relevance in view of their application as decentralized systems; • Highlights the promising role of a special class of oxidation techniques defined as Advanced Oxidation Processes (AOPs) supported by sunlight. This volume will be of great interest to students, technicians, and academics alike who are interested in evaluating and selecting the technologies that lead to better and more sustainable treatment of this huge class of pollutants.

Download or read book Improved Sorptive Removal of Polar Organic Micropollutants from Water Using Surface Modified and Polarized Activated Carbons written by Jieying Zhou and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging organic persistent and mobile (PM) micropollutants can survive the conventional water treatment barriers and end up as hazards in drinking water. Activated carbon (AC) adsorption is one of the prevailing strategies in modern wastewater treatment facilities, which shows satisfying removal ability for non-polar organic compounds, yet not for many highly hydrophilic PM substances. Knowledge in the adsorption drivers for traditional nonpolar organic micropollutants urgently needs to be updated for polar neutral, ionizable andionic compounds taking into account the additional adsorbent/adsorbate interactions. In the scale of this dissertation, we investigated the effect of surface chemical modification (i.e. surface defunctionalization and surface oxidation) and electric polarization of AC felts on the adsorption behaviors of seven environmentally relevant PM contaminants representing polar neutral, cationic and anionic compounds. Surface defunctionalization was found to provide a universal strategy to improve the AC adsorption efficiency for all probed PM types while additional electric polarization can further broaden the flexibility in regulating the uptake and release of charged PM compounds. The electro-assisted ad-/desorption of PM molecules with promising enrichment effects estimated from the batch and flow experiments as well as long-term stability (>20 days, 5 cycles) was proven, which proposes a facile, green, in-situ AC regeneration compared to the state-of-the-art off-site hightemperature regeneration approach. Moreover, we showcased a membrane-free, singlechannel flow unit using two AC electrodes carrying different surface chemistries for an effective removal of highly polar trifluoroacetate from tap water. Our findings shall inspire the next-generation design of adsorbent materials and (electro-)sorptive processes to treat water contaminated by emerging PM substances.

Download or read book Emerging Compounds Removal from Wastewater written by and published by Springer. This book was released on 2012-03-31 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Green Adsorbents for Pollutant Removal written by Grégorio Crini and published by Springer. This book was released on 2018-07-31 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume on adsorption using green adsorbents and is written by international contributors who are the leading experts in the adsorption field. Together with the first volume they show a typical selection of green materials used in wastewater treatment, with emphasis on industrial effluents. This second volume focuses on innovative materials. It presents hemp-based materials for metal removal, and the use of leaves for metal removal. It describes the biosorption of metals and metalloids on various materials and discusses the recent advances in cellulose-based adsorbents used in environmental purposes. Furthermore, activated carbons from food wastes, aerogels and bones, and municipal solid waste biochar as efficient materials for pollutant removal, respectively are reviewed as well as biosorption of dyes onto microbial biosorbents and the use of mushroom biomass to remove pollutants are looked at. The volume also includes detailed review of green adsorbents for removal of antibiotics, pesticides and endocrine disruptors and the use of pillared interlayered clays as innovative materials for pollutant removal. Finally, the use of green adsorbents for radioactive pollutant removal from natural water is discussed. The audience for this book includes students, environmentalists, engineers, water scientists, civil and industrial personnel who wish to specialize in adsorption technology. Academically, this book will be of use to students in chemical and environmental engineering who wish to learn about adsorption and its fundamentals. It has also been compiled for practicing engineers who wish to know about recent developments on adsorbent materials in order to promote further research toward improving and developing newer adsorbents and processes for the efficient removal of pollutants from industrial effluents. It is hoped that the book will serve as a readable and useful presentation not only for undergraduate and postgraduate students but also for the water scientists and engineers and as a convenient reference handbook in the form of numerous recent examples and appended information.

Download or read book Use of Adsorbents for the Removal of Pollutants from Wastewater written by Gordon McKay and published by CRC Press. This book was released on 1995-10-25 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of Adsorbents for the Removal of Pollutants from Wastewater describes the most commonly occurring industrial effluents, and presents direct means and methodologies for treating them. In addition to its excellent introduction to pollutants, this book contains all of the basics you need for understanding the characteristics and applications of adsorbent materials. With this book, you can choose from a wide variety of traditional and novel adsorbents, including alternative, relatively inexpensive adsorbents.

Download or read book Air Gas and Water Pollution Control Using Industrial and Agricultural Solid Wastes Adsorbents written by Tushar Kanti Sen and published by CRC Press. This book was released on 2017-10-20 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air and water pollution occurs when toxic pollutants of varying kinds (organic, inorganic, radioactive and so on) are directly or indirectly discharged into the environment without adequate treatment to remove these potential pollutants. There are a total of 13 book chapters in three sections contributed by significant number of expert authors around the world, aiming to provide scientific knowledge and up-to-date development of various solid wastes based cost-effective adsorbent materials and its sustainable application in the removal of contaminates/pollutants from air, gas and water. This book is useful for the professions, practicing engineers, scientists, researchers, academics and undergraduate and post-graduate students’ interest on this specific area. Key Features: • Exclusive compilation of information on use of industrial and agricultural waste based adsorbents for air and water pollution abatement. • Explores utilization of industrial solid wastes in adsorptive purification and agricultural and agricultural by-products in separation and purification. • Discusses cost-effective solid wastes based emerging adsorbents. • Alternative adsorbents in the removal of a wide range of contaminants and pollutants from water is proposed. • Includes performance of unit operations in waste effluents treatment.

Download or read book Air Gas and Water Pollution Control Using Industrial and Agricultural Solid Wastes Adsorbents written by Tushar Kanti Sen and published by CRC Press. This book was released on 2017-10-20 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air and water pollution occurs when toxic pollutants of varying kinds (organic, inorganic, radioactive and so on) are directly or indirectly discharged into the environment without adequate treatment to remove these potential pollutants. There are a total of 13 book chapters in three sections contributed by significant number of expert authors around the world, aiming to provide scientific knowledge and up-to-date development of various solid wastes based cost-effective adsorbent materials and its sustainable application in the removal of contaminates/pollutants from air, gas and water. This book is useful for the professions, practicing engineers, scientists, researchers, academics and undergraduate and post-graduate students’ interest on this specific area. Key Features: • Exclusive compilation of information on use of industrial and agricultural waste based adsorbents for air and water pollution abatement. • Explores utilization of industrial solid wastes in adsorptive purification and agricultural and agricultural by-products in separation and purification. • Discusses cost-effective solid wastes based emerging adsorbents. • Alternative adsorbents in the removal of a wide range of contaminants and pollutants from water is proposed. • Includes performance of unit operations in waste effluents treatment.

Download or read book Adsorption Technique an Alternative Treatment for Polycyclic Aromatic Hydrocarbon PAHs and Pharmaceutical Active Compounds PhACs written by Opololaoluwa Oladimarun Ogunlowo and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is essential to human consumption; however, its pollution is caused by populace activities from both organic and inorganic compounds sources that require serious attention, to provide clean water. Organic contaminants are known as persistent organic pollutants (POP). They are accumulated in the fat tissues of wildlife and human beings and are toxic to their organs. Degradations of POP are very difficult since they are persistent and also termed as semi-volatile, for example, polycyclic aromatic hydrocarbons (PAHs). Apart from POPs, others toxic organic contaminants with subtle ecological effects are the emerging organic contaminants (EOCs), like pharmaceutical actives contaminants (PhACs). They penetrate the aquatic environment and alter the natural quality. To obtain future discharge requirements, new technologies with granular activated carbon were developed using Oxytenanthera abyssinica and Bambusa vulgaris in remediating PhACs and PAHs. The activated carbon with KCl had removal efficiency of 73.3, 78.1, and 86.2%, which indicated the highest efficiency for PhACs removal, while adsorbent activated with H3PO4 gave 63.9, 66.7, and 82.2% for paracetamol, salbutamol, and chlorpheniramine, respectively. Removal efficiency of 42.5,Äì81.2% and 8.9,Äì65.5% ranges of PAHs were obtained for CBV and COA, respectively. The alternative adsorption treatment techniques are detailed in the chapter.

Download or read book Production of Micro mesoporous Alternative Carbonaceous Adsorbents for High efficiency Sorption of the Emerging Organic Micropollutants from Wastewater Effluent written by Pourya Zojaji and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A partial removal of emerging organic micropollutants (EOMs) in conventional wastewater treatment plants (WWTPs) results in their continuous release to the aquatic terrestrial systems. Subsequently, EOMs such as pharmaceutical compounds, their respective metabolites as well as hormones and herbicides need a complementary treatment, e.g. sorption. However, sorptive material supposes to follow sustainable development principles as much as possible. Thus, utilizing low-cost alternative precursors for the production of sorptive material was considered in this study. Wasted activated sludge (WAS) and wood waste were used as viable primary materials for this purpose. The main objective of the present work was to remove of EOMs from a WWTP's effluent by an effective alternative carbon adsorbent derived from the blends of sludge and woodchips. The study consisted of three stages. In the first stage, the presence of thirty multi-class EOMs was investigated in a WWTP effluent and its vicinity in Saint Lawrence River (SLR). Subsequently, the most popular EOMs were classified, then, target compounds were selected to be exposed to adsorption process. In the second stage, an effective method to produce pore enriched activated carbon from single-step activation of sludge with the additive of wood residues was developed. The produced new adsorbent increased the surface area from 1320 m2/g to 1565 m2/g after combining sludge precursor with hardwood chips. Also, the strength of the surface acidity and yield of products were mounted after wood addition. In stage 3, the sorption of an anti-depressant, venlafaxine (VEN), from aqueous solution onto the new adsorbent derived from the mixture of sludge and hardwood residues (SS:HW) was compared with a commercial granular activated carbon (CGAC). Maximum sorption capacity of the SS:HW was measured 131.57 mg/g from Langmuir isotherm while this value was 25.57 mg/g for CGAC. Then SS:HW adsorption efficiency was successfully validated on real WWTP effluent; while CGAC failed to remove a mixture of EOMs from the real matrix. The results revealed the new micro-mesoporous sludge-based (SS:HW) adsorbent could serve as an efficient tool for polishing WWTP effluent and protecting the quality of surface water resources.

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 Removal of Organic Contaminants from Water by Using the Polypropylene based Monoliths written by Nadeem Baig and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Water pollution is putting in danger the human and marine life. One of the major sources of water pollution is the organic contaminants that are being contributed by the rapidly growing industries and the offshore movements of the oil. There is a need to develop such materials that can selectively adsorb these toxic chemicals or filter out from the water. A propylene-based magnetic monolith was synthesized for the static and dynamic separation of non-polar organic contaminants from the water. The polypropylene-based magnetic monolith was obtained by the combination of the polystyrene, polystyrene and magnetic nanoparticles. The developed monolith was characterized by various advance materials such as FTIR, EDX and BET and Raman spectroscopy. The introduction of the magnetic nanoparticles enhances the surface roughness, improves stability and surface area (33 to 221 m2/g). The magnetic behavior of the monolith provides a chance to direct it at a specific position for adsorption of the non-polar organic contaminants. The magnetic polypropylene monolith has displayed a water contact angle of 146u00b0. The absorption capacity was found up to 1517%. A high flux of 13365 Lmu22122hu22121 was found during the separation of the non-polar hydrocarbons from the water.

Download or read book Characterization of Clay based Adsorbents for the Removal of Pentachlorophenol and Other Organic Contaminants from Water written by Katherine Rose Springman and published by . This book was released on 2000 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nano and Bio Based Technologies for Wastewater Treatment written by Elvis Fosso-Kankeu and published by John Wiley & Sons. This book was released on 2019-05-21 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents recent challenges related to new forms of pollution from industries and discusses adequate state-of-the-art technologies capable to remediate such forms of pollution. Over the past few decades the boom in the industrial sector has contributed to the release in the environment of pollutants that have no regulatory status and which may have significant impact on the health of humans and animals. These pollutants also referred to as "emerging pollutants", are mostly aromatic compounds which derive from excretion of pharmaceutical, industrial effluents and municipal discharge. It is recurrent these days to find water treatment plants which no longer produce water that fits the purpose of domestic consumption based on newly established guidelines. This situation has prompted water authorities and researchers to develop tools for proper prediction and control of the dispersion of pollutants in the environment to ensure that appropriate measures are taken to prevent the occurrence of outbreaks due to sudden load of these pollutants in the water system. The chapters in this book cover a wide range of nano and bio-based techniques that have been designed for the real time detection of emerging contaminants in environmental water sources, geochemical models that are continuously improved for the prediction of inorganic contaminants migration from the mine solid wastes into ground and surface waters. Remediation strategies are also discussed and include effective techniques based on nanotechnology, advanced membrane filtration, oxidative and bio-degradation processes using various types of nanocatalysts, biocatalysts or supporting polymer matrices which are under advanced investigations for their implementation at large scale for the removal of recalcitrant pollutants from polluted water. Nano and Bio-Based Technologies for Wastewater Treatment: Prediction and Control Tools for the Dispersion of Pollutants in the Environment is divided is two sections. The first section covers the occurrence of emerging pollutants in environmental water while the second section covers state-of-the-art research on the removal of emerging pollutants from water using sustainable technologies. A total of 13 chapters addressing various topics related to the two sections are essentially based on recent developments in the respective field which could have a significant impact on the enhancement of the performance of wastewater treatment plants around the world, and especially in developing countries where access to clean and safe water remains a daily challenge.

Download or read book Green Adsorbents for Pollutant Removal written by Grégorio Crini and published by Springer. This book was released on 2018-06-27 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first volume on adsorption using green adsorbents and is written by international contributors who are the leading experts in the adsorption field. The first volume provides an overview of fundamentals and design of adsorption processes. For people who are new to the field, the book starts by two overview chapters presenting the principles and properties of wastewater treatment and adsorption processes. The book also provides a comprehensive source of knowledge on acid-base properties of biosorbents. It discusses fractal-like kinetic models for fluid-solid adsorption, reports on the chemical characterization of oxidized activated carbons for metal removal, and the use of magnetic biosorbents in water treatment. Furthermore, the thermodynamic properties of metals adsorption by green adsorbents, and biosorption of polycyclic aromatic hydrocarbons and organic pollutants are reviewed, and finally the recent trends and impact of nanomaterials as green adsorbent and potential catalysts for environmental applications are summarized. The audience for this book includes students, environmentalists, engineers, water scientists, civil and industrial personnel who wish to specialize in adsorption technology. Academically, this book will be of use to students in chemical and environmental engineering who wish to learn about adsorption and its fundamentals. It has also been compiled for practicing engineers who wish to know about recent developments on adsorbent materials in order to promote further research toward improving and developing newer adsorbents and processes for the efficient removal of pollutants from industrial effluents. It is hoped that the book will serve as a readable and useful presentation not only for undergraduate and postgraduate students but also for the water scientists and engineers and as a convenient reference handbook in the form of numerous recent examples and appended information.