Role of nanomaterial's as adsorbent for heterogeneous reaction in waste water treatment

Sridevi, M; Nirmala, C.; Jawahar, N; Arthi, G.; Vallinayagam, Sugumari; Sharma, Vipin

doi:10.1016/j.molstruc.2021.130596

Cited by 30 publications

(11 citation statements)

References 59 publications

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“…Nanomaterials offer opportunities to develop functional materials with surface, electronic, plasmonic, optical, catalytic and magnetic properties that differ significantly when compared to macroparticles [120,121], thus leading to many new applications that can be used to address numerous technical and social issues in our daily lives, such as solar cells [122][123][124], nanomaterials applied in medicine [125][126][127], gas sensors [128][129][130], energy storage and engineering [131][132][133][134][135] and a great highlight in the field of catalysis [136], mainly for water and effluent treatment [137][138][139][140][141][142].…”

Section: Relationship Between Nanotechnology and Sustainable Developmentmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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Section: Relationship Between Nanotechnology and Sustainable Developmentmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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“…Organic based on nanomaterial has obtained attention as a promising adsorbent for wastewater treatment [11] due to the low cost and large surface area to volume ratio [12]. The large surface area to volume ratio at the nano level improved the adsorption capacity and made it better adsorbing materials than conventional ones.…”

Section: Introductionmentioning

confidence: 99%

The Treatment of Nata de Coco Processing Wastewater Using Anaerobic Bio-Filter

Radityo¹,

Pratiwi²,

Hastutiningrum³

2023

IJESD

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Liquid waste of Nata de Coco industry is acidic and contains high organic matter, hence, it requires proper treatment before being released into the environment. This research aims to determine the quality of Nata de Coco industrial wastewater and the toxicity of liquid waste (LC50 96 hours) to goldfish bio-indicators before and after being treated with anaerobic bio-filters. The research phase includes: 1) Liquid waste treatment using anaerobic bio-filters with wasp nest media, 2) determination of optimal processing time duration with variations of 48, 72, and 96 hours, 3) toxicity tests before and after processing such as acclimatization, preliminary, and actual tests, and 4) analysis of research data using probit analysis and linear regression. The results showed that biochemical oxygen demand (BOD) and COD (chemical oxygen demand) values are higher than standard values according to the Regulation of the Minister of Environment of Indonesia Number 5 of 2014, while the pH is lower than the standard value. The optimal processing time duration is 48 hours with a decreased percentage of BOD, COD, and pH of 53.24%, 30.37%, and 46.15%, respectively. The actual LC50 value of 96 hours of liquid waste before and after treatment is 28.20% and 47.21%, respectively.

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“…The textile, leather, paper, plastic, printing, culinary, and cosmetic industries all employ a variety of dyes [ 1 ]. Furthermore, dye effluents are the pollutants that are most frequently found in wastewater due to their great observability, even at trace quantities [ 2 ]. Additionally, trace dyes are extremely resistant to biodegradation by natural flora and may result in allergic dermatitis or skin irritation [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Mycosynthesis of Hematite (α-Fe2O3) Nanoparticles Using Aspergillus niger and Their Antimicrobial and Photocatalytic Activities

et al. 2022

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Nanoparticles (NPs) and nanomaterials (NMs) are now widely used in a variety of applications, including medicine, solar energy, drug delivery, water treatment, and pollution detection. Hematite (α-Fe2O3) nanoparticles (Hem-NPs) were manufactured in this work by utilizing a cost-effective and ecofriendly approach that included a biomass filtrate of A. niger AH1 as a bio-reducer. The structural and optical properties of Hem-NPs were investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), and UV-visible and Fourier-transform infrared (FTIR) spectroscopies. The results revealed that all of the studied parameters, as well as their interactions, had a significant impact on the crystallite size. The average diameter size of the biosynthesized Hem-NPs ranged between 60 and 80 nm. The antimicrobial and photocatalytic activities of Hem-NPs were investigated. The antimicrobial results of Hem-NPs revealed that Hem-NPs exhibited antibacterial activity against E. coli, B. subtilis, and S. mutans with MICs of 125, 31.25, and 15.62 µg/mL, respectively. Moreover, Hem-NPs exhibited antifungal activity against C. albicans and A. fumigatus, where the MICs were 2000 and 62.5 µg/mL, respectively. The efficiency of biosynthesized Hem-NPs was determined for the rapid biodegradation of crystal violet (CV) dye, reaching up to 97 percent after 150 min. Furthermore, Hem-NPs were successfully used more than once for biodegradation and that was regarded as its efficacy. In conclusion, Hem-NPs were successfully biosynthesized using A. niger AH1 and demonstrated both antimicrobial activity and photocatalytic activity against CV dye.

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Role of nanomaterial's as adsorbent for heterogeneous reaction in waste water treatment

Cited by 30 publications

References 59 publications

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

The Treatment of Nata de Coco Processing Wastewater Using Anaerobic Bio-Filter

Mycosynthesis of Hematite (α-Fe2O3) Nanoparticles Using Aspergillus niger and Their Antimicrobial and Photocatalytic Activities

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