Potential Applications of Nanomaterials in Wastewater Treatment

2021 ◽  
pp. 1230-1240
Author(s):  
Hamidreza Sadegh ◽  
Gomaa A. M. Ali
Keyword(s):  
Wastewater Treatment ◽  
Conventional Treatment ◽  
Efficient Treatment ◽  
Treatment Techniques ◽  
Wide Range ◽  
The World ◽  
Potential Applications ◽  
Treatment Technologies ◽  
Quality Water ◽  
The Subject

High-quality water is one of the most important challenges around the world. Conventional techniques of wastewater treatment need to be developed. Therefore, finding sustainable, environmentally friendly, and efficient treatment techniques is required. In this regard, due to the extraordinary potential of nanotechnology resulted from nanoscale size characteristics, recently nanomaterials have been the subject of novel research and development worldwide. In this chapter, the authors review recent development of the direct applications of nanomaterial as an adsorbent in adsorption systems for integrating nanoparticles into conventional treatment technologies for wastewater treatment, especially a wide range of candidate nanomaterials and its properties. In addition, advantages and limitations as compared to existing processes are discussed.

Potential Applications of Nanomaterials in Wastewater Treatment

2019 ◽  
pp. 51-61 ◽  
Author(s):  
Hamidreza Sadegh ◽  
Gomaa A. M. Ali
Keyword(s):  
Wastewater Treatment ◽  
Conventional Treatment ◽  
Efficient Treatment ◽  
Treatment Techniques ◽  
Wide Range ◽  
The World ◽  
Potential Applications ◽  
Treatment Technologies ◽  
Quality Water ◽  
The Subject

High-quality water is one of the most important challenges around the world. Conventional techniques of wastewater treatment need to be developed. Therefore, finding sustainable, environmentally friendly, and efficient treatment techniques is required. In this regard, due to the extraordinary potential of nanotechnology resulted from nanoscale size characteristics, recently nanomaterials have been the subject of novel research and development worldwide. In this chapter, the authors review recent development of the direct applications of nanomaterial as an adsorbent in adsorption systems for integrating nanoparticles into conventional treatment technologies for wastewater treatment, especially a wide range of candidate nanomaterials and its properties. In addition, advantages and limitations as compared to existing processes are discussed.

ARTISTIC ASSIMILATION OF THE WORLD IN THE ESSAY PROSE OF M. G. ATAMANOV (BASED ON THE BOOK “I AM UDMURT. WHY DOES IT HURT?”)

2020 ◽  
Vol 14 (3) ◽  
pp. 459-464
Author(s):  
Alevtina Vasilevna Kamitova ◽  
Tatyana Ivanovna Zaitseva
Keyword(s):  
Ethnic Identity ◽  
National Identity ◽  
National Culture ◽  
Native Language ◽  
Topographic Features ◽  
Wide Range ◽  
The World ◽  
The Subject ◽  
Individual Style

The paper reflects the specificity of the fundamental ideas of the artistic world of M. G. Atamanov, which includes a wide range of literary facts from the content level of the text of the works to their poetics. A particularly important role in the works of M. G. Atamanov is played by cross-cutting themes and images that reflect the author's individual style and his idea of national-ethnic identity. The subject of the research is the book of essays “Mon - Udmurt. Maly mynym vös’?” (“I am Udmurt. Why does it hurt?”), which most vividly reflected the main spiritual and artistic searches of M. G. Atamanov, associated with his ideas about the Udmurt people. The main motives and plots of the works included in the book under consideration are accumulated around the concept of “Udmurtness”. The comprehension of “Udmurtness” is modeled in his essays through specific leit themes: native language, Udmurt people, national culture, mentality, geographic and topographic features of the Udmurt people’ places of residence, the Orthodox idea. The “Udmurt theme” is recognized and comprehended by the writer through the prism of national identity.

scholarly journals Removal of Toxic Elements and Microbial Contaminants from Groundwater Using Low-Cost Treatment Options

2021 ◽  
Author(s):  
Dana A. Da’ana ◽  
Nabil Zouari ◽  
Mohammad Y. Ashfaq ◽  
Mohammed Abu-Dieyeh ◽  
Majeda Khraisheh ◽  
...  
Keyword(s):  
Cost Analysis ◽  
Toxic Elements ◽  
Low Cost ◽  
Treatment Technique ◽  
Groundwater Treatment ◽  
Efficient Treatment ◽  
Treatment Techniques ◽  
Cost Treatment ◽  
Treatment Technologies ◽  
Microbial Contaminants

Abstract Purpose of Review This paper reviews various low-cost treatment techniques such as adsorption, permeable reactive barrier, and biological techniques for the simultaneous removal of chemical and microbial contaminants from groundwater and discusses treatment mechanisms of different treatment techniques. This paper also discusses the challenges of groundwater treatment, how to choose the appropriate treatment technique, and cost analysis of groundwater treatment. Recent Findings Various treatment technologies have been used for the treatment of groundwater: physical, chemical, and biological technologies with different success rates. In the literature, various adsorbents have been successfully synthesized from low-cost and environmentally friendly materials. Adsorption is considered an efficient treatment technique for the removal of both toxic elements and pathogens by utilizing different adsorbents. For example, the nanostructures of MgO with a BET surface area of up to 171 m2/g obtained a very high adsorption capacity of 29,131 mg/g for fluoride ions in water, while the incorporation of iron in activated carbon has improved its adsorption capacity to 51.3 mg/g for arsenic. Moreover, certain adsorbents have shown the capability to remove 99% of the rotavirus and adenovirus from groundwater. Summary Groundwater resources are contaminated with toxic metals and pathogens. Therefore, water treatment technologies should be evaluated for their efficiency to remove such contaminants. Determination of the most cost-effective and efficient treatment technique is not an easy task and requires the understanding of various aspects such as the contaminants present in water, the reuse options considered, and cost analysis of the treatment technique.

scholarly journals Russian and International Contours of Precarious Employment

2020 ◽  
Vol 16 (1) ◽  
pp. 51-60
Author(s):  
Ivan D. Matskulyak
Keyword(s):  
Technological Progress ◽  
Research Area ◽  
Domestic Economy ◽  
Decent Work ◽  
Precarious Employment ◽  
Management Personnel ◽  
Wide Range ◽  
The World ◽  
Actual Content ◽  
The Subject

The Object of the Study. Socioeconomic processes and phenomena characterized as an unsustainable employment and reflected in the collective monograph published in Rossiya among the first as well as its main provisions, conclusions and recommendations. The Subject of the Study is expressed by the combination of socioeconomic relations between market-based economic entities regarding the widespread development in recent years in the world, including the Rossiyskaya Federatsiya, the precarious employment of the population and the consequences of this process. The Purpose of the Study is to attract the notice of a wide range of management personnel of both state authorities and economic bodies, as well as employers, legislators, scientists, etc., to the problem of unsustainable employment, the need of its effectively solve, especially in conditions of intensification of transformation of the domestic economy. The Main Provisions of the Article cover all six sections, including 30 paragraphs of the monograph studied, authored by 41 specialist-scientists, professionally engaged in the designated research area. The author, on the basis of the actual content of the book, has tried to present all the aspects, to convey the variety of shades of the process of unsustainable employment reflected in the monographic research. It applies both the domestic experience and international practice. The problems of the unsustainable employment are revealed compared to decent work. Their dependence on the scientific and technological progress is considered. The domestic and foreign experience of the personnel reduction is summarized on the example of a flexible employment. Risks of unsustainable employment are identified and directions of their prevention are formulated. The characteristics of precarious employment of different groups of workers - women, pensioners and others working in similar conditions of specific industries - are characterized as well as the legal coverage of unsustainable workers is analyzed, and special attention is paid to external migrants and functioning numerous institutions in the investigated economy sectors.

scholarly journals Rapid Production of a Novel Al(III) Dependent Bioflocculant Isolated From Raoultella ornithinolytica 160-1 and Its Application Combined With Inorganic Salts

2021 ◽  
Vol 11 ◽  
Author(s):  
Rui Ding ◽  
Laipeng Luo ◽  
Ruixiang Han ◽  
Meiling Zhang ◽  
Tingting Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Zeta Potentials ◽  
Ph Tolerance ◽  
Flocculation Activity ◽  
Great Performance ◽  
Wide Range ◽  
Rapid Production ◽  
Potential Applications ◽  
Individual Use ◽  
The Individual

An efficient bioflocculant-producing strain, Raoultella ornithinolytica 160-1, was identified by 16S rRNA and mass spectrometry analyses. Rapid production of bioflocculant EPS-160 was obtained with 10.01 g/(L⋅d) after optimized by response surface methodology. With the aid of Al(III), more than 90% flocculation activity of EPS-160 at 8 mg/L dosage was achieved in 5 min. Thus, this novel Al(III) dependent bioflocculant was used in combined with chemical coagulants AlCl3 to remove kaolin suspensions and wastewater treatment. The results indicated that the addition of EPS-160 in aggregation system not only largely improved the flocculation ability than the individual use of chemical flocculant (over 30 percent), but also overcome the decrease of flocculation activity due to the overdose of AlCl3 and maintained the optimum dosage of AlCl3 in a wide range (11–23 mg/L). The zeta potentials and EPS-160 structure indicated that both charge neutralization and bridging were the flocculation mechanism with kaolin. During the wastewater treatment, this composite flocculants consisted of EPS-160 and AlCl3 also had great performance for turbidity elimination. Moreover, with the properties of high flocculation activity, hyperthermal stability, pH tolerance and non-toxicity, EPS-160 shows great potential applications.

scholarly journals Introduction to Blockchain: An Emerging Technology

2021 ◽  
Vol 7 (05) ◽  
pp. 162-164
Author(s):  
Neenu Kuriakose & Lincy N
Keyword(s):  
New World ◽  
The Internet ◽  
Digital Information ◽  
Distributed Software ◽  
Blockchain Technology ◽  
Technological Advances ◽  
Software Network ◽  
Wide Range ◽  
The World ◽  
Potential Applications

It is only a matter of time before technology emerges to open up a whole new world of opportunities. For example, the invention of the Internet was a development like this that changed the world in almost every theory. Blockchain technology is also one of the emerging technological advances that is expected to change the way transactions are conducted, thus affecting a wide range of potential applications. Blockchain is a distributed software network that works both as a digital logger and a method that allows secure transfer of assets without a mediator. Just as the Internet is a technology that facilitates the flow of digital information, blockchain is a technology that facilitates the digital exchange of digital value. Anything from coins to land titles to votes can be token, stored, and exchanged via a blockchain network.

scholarly journals Music code of poetry Dmitry Kremeny

2019 ◽  
Vol 66 (3) ◽  
pp. 186-190
Author(s):  
Olha Petrenko
Keyword(s):  
World Music ◽  
Music Culture ◽  
Semantic Richness ◽  
Wide Range ◽  
The World ◽  
The Subject ◽  
Poetic Texts ◽  
The One ◽  
Musical Cues

The article deals with the role of musical images in the poetry of Dmitry Kremen. The subject of study is the music code, which is present in many works of the poet. Musical signs, symbols, links play a significant role in vocabulary, phraseology and other ways of poetic expressiveness. Familiarity with the subject world of D. Kremin's poetic texts includes a wide range of concepts related to the world of sounds. The additional accents of a musical-conceptual thesaurus arise when musical cues form certain speech turns that acquire the meaning of metaphors. Musical signs in the lyrics of Dmitry Kremin imply awareness of a wide range of sound associations, which the poet interprets from the standpoint of his own value attitude to them. Beethoven, Chopin, Mozart are the names-symbols of the world music culture, which occupy a significant place in the thesaurus of Dmitry Kremin's poetic texts. Behind these subject designations lies the vast world of artistic and figurative generalization and lyrical and philosophical reflections that are gaining coded meaning. Familiarity with the poetry of Dmitry Kremin proves that the leitmotif of many of his texts is the image of a violin, which acquires different semantic shades. Thus, in Beethoven's poetry, the poet emphasizes the value of music as a special language, devoid of words, but empowered to embody emotional and semantic richness, and therefore capable of being the language of angels. Music code the poetry of Dmitry Kremen is a multidimensional system in which the concept of "music" acts as a concept as a set of meaningful characters and their semantic meanings. In the process of decoding Dmitry Kremin's poetry, one can discover the deep semantic loads of the musical code, on the one hand – as the embodiment of the categories of high, sublime, valuable and eternal in the human sense, on the other – as a symbol of the extra-material, mystical, language of which the angels speak. Decoding the poet's texts is the process of extracting recognition codes and perception codes. The codes of perception in the poetry of Dmitry Kremenya are meaningful loads of texts, its semantic components, which highlight the deep meanings of texts. Through the musical code, the poet embodies the content of the categories of the sublime and the beautiful. The music code shows the understanding of poetry of Dmitry Kremenin a deeply metaphorical sense.

Reality or myth: “Advanced wastewater treatment technologies cannot be cost competitive with conventional treatment processes”

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Ali R. Ahmadi Motlagh ◽  
Stephen Lacy ◽  
Madan Arora ◽  
Jim Ross ◽  
Jeff Misenhimer
Keyword(s):  
Wastewater Treatment ◽  
Conventional Treatment ◽  
Treatment Plant ◽  
Advanced Treatment ◽  
Recycled Water ◽  
Treatment Technology ◽  
Treatment Processes ◽  
Treatment Technologies ◽  
Two Alternatives

With shortage of water becoming a major concern in many areas, use of recycled water is a necessity for a growing number of municipalities. This paper describes a case study in which two alternatives were considered for upgrading an existing wastewater treatment plant with the goal of producing recycled water. The first alternative consisted of conventional secondary and tertiary unit processes while the second alternative included the advanced treatment technology of membrane bioreactor (MBR). Also, two alternatives were evaluated for disinfection of recycled water; chlorine gas and UV system. The more advanced treatment technologies (MBR + UV), which produce the higher quality recycled water, resulted in higher cost. The paper discusses the design and project execution approaches as how the more expensive advanced treatment processes were made cost competitive with the conventional treatment processes.

Wastewater treatment: new flotation models and flotation combines of the KBS type and special purpose

2021 ◽  
Author(s):  
Boris Ksenofontov
Keyword(s):  
Wastewater Treatment ◽  
Water Purification ◽  
World Literature ◽  
Flotation Process ◽  
University Teachers ◽  
Multi Stage ◽  
Wide Range ◽  
The World ◽  
First Time ◽  
Broad Aspect

In this monograph, for the first time in the world literature, the multi-stage and generalized flotation models proposed by the author more than thirty years ago are considered in a broad aspect. The possibilities of their use in various areas of flotation water purification, precipitation thickening and mineral processing are shown. Issues related to new flotation equipment in the form of flotation combines of the KBS type and special purpose, developed on the basis of multi-stage and generalized models of the flotation process, are widely covered. The prospects and ways of intensification of flotation processes of water purification are indicated. For a wide range of readers, including researchers, university teachers, postgraduates, masters, bachelors and undergraduates.

scholarly journals ACEHNESE ONOMATOPOEIAS: INVESTIGATING, LISTING, AND INTERPRETING THEIR MEANINGS

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Ida Muliawati ◽  
Dara Yusnida
Keyword(s):  
Data Reduction ◽  
Qualitative Method ◽  
Analysis Data ◽  
Psychological State ◽  
Data Display ◽  
Data Verification ◽  
Wide Range ◽  
The World ◽  
The Subject ◽  
Descriptive Qualitative

Sound-imitating words, called onomatopoeia, presents in most of languages in the world including Acehnese language, one of traditional languages in Indonesia, in which a great deal of onomatopoeias exist in it due to its unique constructions of onomatopoeia. This research aims at finding out kinds of Acehnese onomatopoeias understood and spoken among native Acehnese people by using Pidie dialect. Thus, five people in the Pidie Jaya regency were sorted out to be the subject informants by actualizing purposive and snowball technique. Moreover, a descriptive qualitative method was manifested in the research by actualizing some instruments to get the data such as structured interviewing and documentation. Hence, all of the data were interpreted in words by listing, transcribing their phonetics orderly, as well as describing both their function and meaning. A three-step analysis – data reduction, data verification, and data display-- was employed to describe the data gathered.  Result of the research reveals that Acehnese Onomatopoeias covers a wide range of expressions in sound-imitating words which are categorized into three big classes; Phonomimes which includes auditory impressions of various imitative sounds of nature; Phenomimes -- mimetic words to describe objects’ condition and human’s activities; and Psychomimes – symbolizing psychological state or inner feelings. Still, most of Acehnese onomatopeic words are in forms of repetition and nasalization which seems to be more unique compared to other languages.

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