Metal Nanoparticles in Dye Wastewater Treatment – Smart Solution for Clear Water

2021 ◽  
Vol 15 ◽  
Author(s):  
Djurdja Kerkez ◽  
Milena Bečelić-Tomin ◽  
Vesna Gvoić ◽  
Božo Dalmacija
Keyword(s):  
Wastewater Treatment ◽  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Functional Materials ◽  
Pollutant Removal ◽  
Metal Nanoparticle ◽  
Special Focus ◽  
Dye Wastewater ◽  
Water And Wastewater Treatment ◽  
Environmental Application

Background: In past years, nanomaterials have been actively studied and developed, and have been successfully applied in many fields. Due to water scarcity, the application of nanomaterials in water and wastewater treatment has drawn significant attention. Due to their supreme features, they represent functional materials with great potential for pollutant removal and environmental application. Objective: This literature review aims to summarize and present the metal nanoparticles used for dye wastewater treatment. Discussion subject is metallic nanoparticles for mentioned use, with special focus on iron based, bimetallic, and photocatalytic nanomaterials. Method: Reference search of “metal nanoparticles in dye wastewater treatment” was conducted in detail through Serbian Library Consortium for Coordinated Acquisition (KoBSON). Published papers search was mainly based on Web of Science and Science Direct database focusing on latest research in this topic. The corresponding literature was carefully read, analysed and evaluated. Results: Two hundred and twenty-four scientific and review articles, thesis and book chapters were evaluated in order to summarise current trends in metal nanoparticle use in wastewater treatment. An increased trend in scientific research regarding metal nanoparticles can be observed for removal of different inorganic and organic pollutants. Among most extensively tested are dye molecules, representing challenging species in terms of degradation and consequent removal. Modification, layering, combination and green synthesis of metal nanoparticles results in materials capable for efficient and environmentally sustainable wastewater treatment. Conclusion: In this paper, extensive review of metal nanoparticles in dye wastewater treatment is presented. With rapid water demand, development of sustainable materials and technology is necessary. Use of these materials represents eco-friendly, energy efficient and sustainable water purification solution. However, matter of usage commercialization is still to be addressed.

scholarly journals Functionalized Carbon Nanotubes (CNTs) for Water and Wastewater Treatment: Preparation to Application

2021 ◽  
Vol 13 (10) ◽  
pp. 5717
Author(s):  
Mian Muhammad-Ahson Aslam ◽  
Hsion-Wen Kuo ◽  
Walter Den ◽  
Muhammad Usman ◽  
Muhammad Sultan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Wastewater Treatment ◽  
Water Resources ◽  
Large Scale ◽  
Industrial Applications ◽  
Biological Species ◽  
Special Focus ◽  
Water And Wastewater Treatment ◽  
Adsorption Sites ◽  
Water And Wastewater

As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed waters). Diverse techniques have been developed to deal with water quality concerns. Carbon based nanomaterials, especially carbon nanotubes (CNTs) with their high specific surface area and associated adsorption sites, have drawn a special focus in environmental applications, especially water and wastewater treatment. This critical review summarizes recent developments and adsorption behaviors of CNTs used to remove organics or heavy metal ions from contaminated waters via adsorption and inactivation of biological species associated with CNTs. Foci include CNTs synthesis, purification, and surface modifications or functionalization, followed by their characterization methods and the effect of water chemistry on adsorption capacities and removal mechanisms. Functionalized CNTs have been proven to be promising nanomaterials for the decontamination of waters due to their high adsorption capacity. However, most of the functional CNT applications are limited to lab-scale experiments only. Feasibility of their large-scale/industrial applications with cost-effective ways of synthesis and assessments of their toxicity with better simulating adsorption mechanisms still need to be studied.

Surfactant-free solution-based synthesis of metallic nanoparticles toward efficient use of the nanoparticles’ surfaces and their application in catalysis and chemo-/biosensing

2013 ◽  
Vol 2 (1) ◽  
pp. 5-25 ◽  
Author(s):  
Hideya Kawasaki
Keyword(s):  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Active Sites ◽  
Metal Nanoparticle ◽  
Molar Ratio ◽  
Synthesis Methods ◽  
Ionization Mass ◽  
Free Solution ◽  
Effective Utilization ◽  
Stabilizing Agents

AbstractThe choice of stabilizer and the stabilizer-to-precursor ions molar ratio during metal nanoparticle synthesis are important for controlling the shape, size, and dispersion stability of the nanoparticles. However, the active sites on the nanoparticles surfaces may be blocked by the stabilizing agents used, resulting in a less-than-effective utilization of the surfaces. In this review, various surfactant-free solution-based methods of synthesizing metal nanoparticles are described, along with the applications of such nanoparticles in catalysis and sensing. “Surfactant-free” synthesis does not imply truly bare metal nanoparticles synthesis but implies one where the metal nanoparticles are prepared in the absence of additional stabilizing agents such as thiolate and phosphine compounds, surfactants, and polymers. These metal nanoparticles are stabilized by the solvents or the simple ions of the reducing agents or low-molecular-weight salts used. Surfactant-free synthesis of metal nanoparticles via photochemical-, ultrasonochemical-, and laser ablation-mediated synthesis methods is also described. Because of the effective utilization of their surfaces, metal nanoparticles prepared without surfactants, polymers, templates, or seeds are expected to exhibit high performance when used in catalysis (synthetic catalysis and electrocatalysis) and sensing (surface-enhanced Raman scattering (SERS)), surface-assisted laser desorption/ionization-mass spectrometry (SALDI-MS)).

scholarly journals Microbial synthesis of hollow porous Prussian blue@yeast microspheres and their synergistic enhancement of organic pollutant removal performance

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 16258-16270 ◽  
Author(s):  
Si Chen ◽  
Bo Bai ◽  
Xiaohui Xu ◽  
Na Hu ◽  
Honglun Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Prussian Blue ◽  
Organic Pollutant ◽  
Pollutant Removal ◽  
Dye Wastewater ◽  
Microbial Synthesis ◽  
Synergistic Enhancement ◽  
Enhanced Activity

Prussian blue was in situ grown on S. cerevisiae cells to obtain PB@yeast, which exhibited synergistically enhanced activity in dye wastewater treatment.

Plant Extracts Promoted Preparation of Silver and Gold Nanoparticles: A Systematic Review

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2030001 ◽  
Author(s):  
Manobjyoti Bordoloi ◽  
Ranjan K. Sahoo ◽  
Kashyap J. Tamuli ◽  
Surovi Saikia ◽  
Partha P. Dutta
Keyword(s):  
Gold Nanoparticles ◽  
Physicochemical Properties ◽  
Metal Nanoparticles ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Biological Activities ◽  
Biological Effects ◽  
Metal Nanoparticle ◽  
High Rate ◽  
Silver And Gold Nanoparticles

Eco-friendly synthesis of metal nanoparticles has accrued utmost interest by researchers in the last decade for their distinct properties making them applicable in different fields of science and technology. With regard to its low cost, low environmental effect, zero contamination and higher reducing potential, their synthesis by green chemistry procedure is an emerging area in nanobiotechnology. Plant-based nanoparticles produced are more stable, with high rate of synthesis and are suitable for large scale biosynthesis as compared to the use of microorganisms which require stringent control on cell cultures. Plant-based nanoparticles have advantages over other methods due to presence of biomolecules acting both as capping and reducing agents by increasing the rate of reduction and stabilization of nanoparticles. Furthermore, secondary metabolites present in plants are used for reducing metal ions in single step reaction. In this review paper, we have cited 265 research articles and have outlined 106 plant extract assisted gold and silver nanoparticles. The present review highlights the achievements of metal nanoparticle synthesis, especially silver and gold nanoparticles from plant extracts, along with factors liable for the synthesis of metal nanoparticles. It also focuses on the dye degrading properties and various biological activities of metal nanoparticles, their antimicrobial mechanism of action and the physicochemical properties that influence the biological effects of metallic nanoparticles. Biological activities of metal nanoparticles were also described, including the effect of physicochemical properties of metal nanoparticles on biological activities.

Chemical Water and Wastewater Treatment VIII

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402840-9781780402840
Author(s):  
H. Hahn ◽  
E. Hoffman ◽  
H. Odegaard
Keyword(s):  
Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Chemical Water

Nanofiltration of endocrine disrupting compounds

2003 ◽  
Vol 3 (5-6) ◽  
pp. 321-327 ◽  
Author(s):  
M. Gallenkemper ◽  
T. Wintgens ◽  
T. Melin
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Compounds ◽  
Municipal Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Wide Range ◽  
Endocrine Disrupting ◽  
Municipal Wastewater Treatment Plants ◽  
Set Up

Endocrine disrupting compounds can affect the hormone system in organisms. A wide range of endocrine disrupters were found in sewage and effluents of municipal wastewater treatment plants. Toxicological evaluations indicate that conventional wastewater treatment plants are not able to remove these substances sufficiently before disposing effluent into the environment. Membrane technology, which is proving to be an effective barrier to these substances, is the subject of this research. Nanofiltration provides high quality permeates in water and wastewater treatment. Eleven different nanofiltration membranes were tested in the laboratory set-up. The observed retention for nonylphenol (NP) and bisphenol A (BPA) ranged between 70% and 100%. The contact angle is an indicator for the hydrophobicity of a membrane, whose influence on the permeability and retention of NP was evident. The retention of BPA was found to be inversely proportional to the membrane permeability.

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