Engineered Zero-Dimensional Fullerene/Carbon Dots-Polymer Based Nanocomposite Membranes for Wastewater Treatment

With the rapid growth of industrialization, diverse pollutants produced as by-products are emitted to the air-water ecosystem, and toxic contamination of water is one of the most hazardous environmental issues. Various forms of carbon have been used for adsorption, electrochemical, and ion-exchange membrane filtration to separation processes for water treatment. The utilization of carbon materials has gained tremendous attention as they have exceptional properties such as chemical, mechanical, thermal, antibacterial activities, along with reinforcement capability and high thermal stability, that helps to maintain the ecological balance. Recently, engineered nano-carbon incorporated with polymer as a composite membrane has been spotlighted as a new and effective mode for water treatment. In particular, the properties of zero-dimensional (0D) carbon forms (fullerenes and carbon dots) have encouraged researchers to explore them in the field of wastewater treatment through membrane technologies as they are biocompatible, which is the ultimate requirement to ensure the safety of drinking water. Thus, the purpose of this review is to highlight and summarize current advances in the field of water purification/treatment using 0D carbon-polymer-based nanocomposite membranes. Particular emphasis is placed on the development of 0D carbon forms embedded into a variety of polymer membranes and their influence on the improved performance of the resulting membranes. Current challenges and opportunities for future research are discussed.

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Tailored polymer nanocomposite membranes based on carbon, metal oxide and silicon nanomaterials: a review

Journal of Materials Chemistry A ◽

10.1039/c8ta11460a ◽

2019 ◽

Vol 7 (15) ◽

pp. 8723-8745 ◽

Cited By ~ 46

Author(s):

Meenakshi Sundaram Sri Abirami Saraswathi ◽

Alagumalai Nagendran ◽

Dipak Rana

Keyword(s):

Water Treatment ◽

Metal Oxide ◽

Polymer Nanocomposite ◽

Nanoscale Materials ◽

Nanocomposite Membranes ◽

Separation Processes ◽

The Past ◽

Structure Synthesis

Research into the structure, synthesis and properties of nanoscale materials has increased at an enormous pace over the past decades since they have a wide variety of applications ranging from adsorption to separation processes in water treatment.

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Graphene Oxide Membrane: Recent Advancement in Waste Water Treatment and its Applications

Current Nanomaterials ◽

10.2174/2405461505999200527140938 ◽

2020 ◽

Vol 5 (2) ◽

pp. 111-157

Author(s):

Nusrat Sahiba ◽

Pankaj Teli ◽

Prakash Prajapat ◽

Shikha Agarwal

Keyword(s):

Graphene Oxide ◽

Water Treatment ◽

Waste Water Treatment ◽

Current Status ◽

Future Research ◽

Wastewater Management ◽

Challenges And Opportunities ◽

Future Challenges ◽

Potential Applications ◽

Oxide Membrane

World water resources are barely alive due to various factors such as rise in population, adverse changes in the environment and the effects of pollutants, which increase the demand for fresh-water. Numerous techniques have been developed to solve the problem of water inadequacy, but most of them are adverse with respect to the environment and economy. Graphene-oxide (GO) nanopore materials may be an effective solution for water-purification due to its properties of easy fabrication and modification. This next-generation membrane has high waterflux, selectivity, and permeability to selected molecules. In this discussion, we have covered the latest technologies and potential applications of GO for waterpurification, which shall help researchers to get quick ideas for future research to design and fabricate multi-layered GO membranes. This article gives a snapshot of current status and proposed strategies of graphene-membranes for water treatment with earlier information to wastewater management and stimulated progress in this area from 2017 to date. The future challenges and opportunities in this field have also been highlighted.

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Carbon-based polymer nanocomposite membranes for oily wastewater treatment

npj Clean Water ◽

10.1038/s41545-019-0044-z ◽

2019 ◽

Vol 2 (1) ◽

Cited By ~ 12

Author(s):

Sadaf Noamani ◽

Shirin Niroomand ◽

Masoud Rastgar ◽

Mohtada Sadrzadeh

Keyword(s):

Wastewater Treatment ◽

Mechanical Stability ◽

Polymer Nanocomposite ◽

Terrestrial Ecosystems ◽

Future Research ◽

Oily Wastewater ◽

Nanocomposite Membranes ◽

Water Separation ◽

Oily Wastewater Treatment ◽

Carbon Based

Abstract Increasing oil contaminants in water is one of the major environmental concerns due to negative impacts on human health and aquatic and terrestrial ecosystems. The objective of this review paper is to highlight recent advances in the application carbon-based polymer nanocomposite membranes for oily wastewater treatment. Carbon-based nanomaterials, including graphene and graphene-oxide (GO), carbon nanotubes (CNTs), and carbon nanofibers (CNFs), have gained tremendous attention due to their unique physicochemical properties, such as excellent chemical and mechanical stability, electrical conductivity, reinforcement capability, and their antifouling properties. This review encompasses innovative carbon-based membranes for effective oil–water separation and provides a critical comparison of these membranes regarding the permeation flux, wettability, and flux recovery. The current challenges for the successful development of carbon-based nanocomposite membranes and opportunities for future research are also discussed.

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Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

Indonesian Journal of Science and Technology ◽

10.17509/ijost.v2i1.5993 ◽

2017 ◽

Vol 2 (1) ◽

pp. 97 ◽

Cited By ~ 7

Author(s):

Muhammad Roil Bilad

Keyword(s):

Wastewater Treatment ◽

Membrane Fouling ◽

Membrane Filtration ◽

Control Strategies ◽

Domestic Wastewater ◽

Research Direction ◽

Advanced Technology ◽

Membrane Properties ◽

Future Research ◽

Dynamic Filtration

Membrane bioreactors (MBRs) have recently become widely accepted as an advanced technology for treatment of domestic and industrial wastewaters. The objective of this review is to provide overview on MBR technology for wastewater treatment application. It includes discussions on the fundamental, core problems (membrane fouling), recent effective development approach (dynamic filtration systems) and future research direction of MBRs. Since MBRs integrate a conventional activated sludge process with membrane filtration, and both fundamental aspects are discussed first. Later, a comprehensive discussion about membrane fouling, the main problems in MBR, is provided, including fouling control strategies. The discussion on the MBR membranes and relation between membrane properties and MBR performance is also provided. This review also includes one of the most promising MBR technologies that specifically design to manage membrane fouling: dynamic filtration systems. Lastly, insight into an approach to address MBRs challenges and recent research and developments are provided.

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Challenges and Opportunities for Neuroimaging in Young Patients with Traumatic Brain Injury: a Coordinated Effort towards Advancing Discovery from the ENIGMA Pediatric Moderate/Severe TBI Group

10.31234/osf.io/y2txh ◽

2019 ◽

Cited By ~ 4

Author(s):

Emily L. Dennis ◽

Karen Caeyenberghs ◽

Robert F. Asarnow ◽

Talin Babikian ◽

Brenda Bartnik-Olson ◽

...

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Meta Analysis ◽

Young Patients ◽

Future Research ◽

Childhood And Adolescence ◽

Developmental Issues ◽

Challenges And Opportunities ◽

Severe Tbi ◽

Advance Research

Traumatic brain injury (TBI) is a major cause of death and disability in children in both developed and developing nations. Children and adolescents suffer from TBI at a higher rate than the general population; however, research in this population lags behind research in adults. This may be due, in part, to the smaller number of investigators engaged in research with this population and may also be related to changes in safety laws and clinical practice that have altered length of hospital stays, treatment, and access to this population. Specific developmental issues also warrant attention in studies of children, and the ever-changing context of childhood and adolescence may require larger sample sizes than are commonly available to adequately address remaining questions related to TBI. The ENIGMA (Enhancing NeuroImaging Genetics through Meta-Analysis) Pediatric Moderate-Severe TBI (msTBI) group aims to advance research in this area through global collaborative meta-analysis. In this paper we discuss important challenges in pediatric TBI research and opportunities that we believe the ENIGMA Pediatric msTBI group can provide to address them. We conclude with recommendations for future research in this field of study.

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Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Nanomaterials ◽

10.3390/nano11020369 ◽

2021 ◽

Vol 11 (2) ◽

pp. 369 ◽

Cited By ~ 1

Author(s):

Arumugam Saravanan ◽

Moorthy Maruthapandi ◽

Poushali Das ◽

John H. T. Luong ◽

Aharon Gedanken

Keyword(s):

Carbon Dots ◽

Fluorescence Spectra ◽

Antibacterial Effect ◽

Curcuma Longa ◽

Antibacterial Activities ◽

Blue Color ◽

Mean Size ◽

One Step ◽

Bactericidal Activities ◽

Bright Blue

Carbon dots (CDs) were obtained from medicinal turmeric leaves (Curcuma longa) by a facile one-step hydrothermal method and evaluated for their bactericidal activities against two gram-negative; Escherichia coli, Klebsiella pneumoniae, and two gram-positive counterparts; Staphylococcus aureus, S. epidermidis. The CDs exhibited spherical shapes with a mean size of 2.6 nm. The fluorescence spectra of CDs revealed intense fluorescence at λex/em = 362/429 nm with a bright blue color in an aqueous solution. The CDs showed strong photostability under various environmental conditions (pH, salt, and UV-radiation). The complete bactericidal potency of CDs was 0.25 mg/mL for E.coli and S. aureus after 8 h of exposure, while for K. pneumoniae, and S. epidermidis, the CDs at 0.5 mg/mL good antibacterial effect within 8 h and complete eradication after 24 h of exposure is observed. The release of reactive oxygen species played a crucial role in the death of the bacterial cell. The present study provides a strategy for the preparation of CDs from a medicinal plant and their potential antibacterial activities against four common contagious pathogens.

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Carbon–titanium dioxide (C/TiO2) nanofiber composites for chemical oxidation of emerging organic contaminants in reactive filtration applications

Environmental Science Nano ◽

10.1039/d0en00975j ◽

2021 ◽

Vol 8 (3) ◽

pp. 711-722

Author(s):

Katherine E. Greenstein ◽

Matthew R. Nagorzanski ◽

Bailey Kelsay ◽

Edgard M. Verdugo ◽

Nosang V. Myung ◽

...

Keyword(s):

Titanium Dioxide ◽

Water Treatment ◽

Organic Contaminants ◽

Membrane Filtration ◽

Titanium Dioxide Nanoparticles ◽

Chemical Oxidation ◽

Tio2 Nanofiber ◽

System P ◽

Filtration System ◽

Emerging Organic Contaminants

Electrospun carbon nanofibers with integrated titanium dioxide nanoparticles are used for water treatment in a photoactive membrane filtration system.

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Enhanced Wastewater Treatment by Immobilized Enzymes

Current Pollution Reports ◽

10.1007/s40726-021-00183-7 ◽

2021 ◽

Author(s):

Jakub Zdarta ◽

Katarzyna Jankowska ◽

Karolina Bachosz ◽

Oliwia Degórska ◽

Karolina Kaźmierczak ◽

...

Keyword(s):

Wastewater Treatment ◽

Process Optimization ◽

Organic Pollutants ◽

Large Scale ◽

Removal Rate ◽

Immobilized Enzymes ◽

Future Research ◽

Process Conditions ◽

Removal Rates ◽

Catalytic Cycles

Abstract Purpose of Review In the presented review, we have summarized recent achievements on the use of immobilized oxidoreductases for biodegradation of hazardous organic pollutants including mainly dyes, pharmaceuticals, phenols, and bisphenols. In order to facilitate process optimization and achievement of high removal rates, effect of various process conditions on biodegradation has been highlighted and discussed. Recent Findings Current reports clearly show that immobilized oxidoreductases are capable of efficient conversion of organic pollutants, usually reaching over 90% of removal rate. Further, immobilized enzymes showed great recyclability potential, allowing their reuse in numerous of catalytic cycles. Summary Collected data clearly indicates immobilized oxidoreductases as an efficient biocatalytic tools for removal of hazardous phenolic compounds, making them a promising option for future water purification. Data shows, however, that both immobilization and biodegradation conditions affect conversion efficiency; therefore, process optimization is required to achieve high removal rates. Nevertheless, we have demonstrated future trends and highlighted several issues that have to be solved in the near-future research, to facilitate large-scale application of the immobilized oxidoreductases in wastewater treatment.

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Effect of Pre-Oxidation on Coagulation/Ceramic Membrane Treatment of Yangtze River Water

Membranes ◽

10.3390/membranes11050369 ◽

2021 ◽

Vol 11 (5) ◽

pp. 369

Author(s):

Shengji Xia ◽

Xinran Zhang ◽

Yuanchen Zhao ◽

Fibor J. Tan ◽

Pan Li ◽

...

Keyword(s):

Water Treatment ◽

Membrane Fouling ◽

Membrane Filtration ◽

Ceramic Membrane ◽

Membrane Separation ◽

Membrane System ◽

Coagulation System ◽

Fouling Control ◽

Filtration System ◽

Membrane Treatment

The membrane separation process is being widely used in water treatment. It is very important to control membrane fouling in the process of water treatment. This study was conducted to evaluate the efficiency of a pre-oxidation-coagulation flat ceramic membrane filtration process using different oxidant types and dosages in water treatment and membrane fouling control. The results showed that under suitable concentration conditions, the effect on membrane fouling control of a NaClO pre-oxidation combined with a coagulation/ceramic membrane system was better than that of an O3 system. The oxidation process changed the structure of pollutants, reduced the pollution load and enhanced the coagulation process in a pre-oxidation-coagulation system as well. The influence of the oxidant on the filtration system was related to its oxidizability and other characteristics. NaClO and O3 performed more efficiently than KMnO4. NaClO was more conducive to the removal of DOC, and O3 was more conducive to the removal of UV254.

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