Decolorization of Methylene Blue Dye Using Sonocatalytic Followed by Photocatalytic Process

Balakumara, Ramanathan; Sathya, K.; Saravanathamizhan, R.

doi:10.1007/s41101-016-0010-2

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…The decrease in CR dye uptake was mainly due to the limited amount of CR dye molecules in solution, and the CR dye concentration may be very dilute for this range of the AgNPs dosage. The results obtained agreed with previous work [20].…”

Section: Effect Of Phsupporting

confidence: 93%

Removal of Congo Red Dye Using Green Kyllinga Weed Extract and Silver Nanoparticles as Catalysts

Isa

Khalid

Azizan

et al. 2023

JMNM

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This study describes the ability of green kyllinga weed extract (GKWE) with silver nanoparticles (AgNPs) as catalysts for the removal of congo red (CR) dye from synthetic coloring wastewater. AgNPs were synthesized using GKWE as a reducing agent, resulting in the formation of AgNPs with an average size of 17.64 nm. For the catalytic study, the experiment was carried out in batch mode. Different parameters such as the effect of pH, amount of AgNPs as a catalyst, initial CR dye concentration, and amount of GKWE were evaluated for the removal of CR dye for 30 mins reaction times. The CR removal was achieved between 91.2% and 96.7% at the optimum condition which is at pH 2, 0.5 mL of 2 mM AgNPs as a catalyst, 60-100 mg/L of initial CR dye concentration, and 1 mL amount of GKWE were used. The result showed that the combination between GKWE and AgNPs had a synergy interaction in enhancing the removal of CR dye from coloring wastewater via the coagulation-flocculation and sedimentation process.

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Section: Effect Of Phsupporting

confidence: 93%

Removal of Congo Red Dye Using Green Kyllinga Weed Extract and Silver Nanoparticles as Catalysts

Isa

Khalid

Azizan

et al. 2023

JMNM

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“…Once we confirmed that TFNs provided inertial cavitation in response to focused ultrasound, we next investigated the potential of the TFNs particles as sonophotocatalysts through degradation of MB and DPBF. Degradation of both MB and DBPF has already been investigated with photo- [24] , [25] and sonosensitizing agents [23] , [31] , [49] . MB was used as a model dye in our study as it belongs to a class of synthetic dyes that are non-biodegradable toxic runoff from the textile industry [24] .…”

Section: Resultsmentioning

confidence: 99%

“…Sonoluminescence from cavitation events in the fluid interacts with nearby photosensitizers to generate reactive oxygen species (ROS) [10] , [27] , [28] . Modifying the photosensitizers [23] , [28] , [29] , adding hydrogen peroxide (H 2 O 2 ), or including other stimuli (e.g., light) into the reaction solution have further enhanced ROS formation [30] , [31] . However, these methods lack spatiotemporal control of cavitation events; they rely on continuous wave ultrasound to nucleate and sustain cavitation.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured TiO2 cavitation agents for dual-modal sonophotocatalysis with pulsed ultrasound

Jonnalagadda

Kwan

2021

Ultrasonics Sonochemistry

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“…The higher degradation rate was reported due to the formation of both HO • and SO 4 •− radical species. Balakumara et al [116] investigated the sonophototocatalyticdecolourization of MB in the presence of ZnO/Bi 2 O 3 synthesised using a hydrothermal method. An enhanced decolourization was observed in a sonophotocatalytic process performed under optimized experimental parameters.…”

Section: Sonophotocatalysismentioning

confidence: 99%

Hybrid Advanced Oxidation Processes Involving Ultrasound: An Overview

et al. 2019

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: Sonochemical oxidation of organic pollutants in an aqueous environment is considered to be a green process. This mode of degradation of organic pollutants in an aqueous environment is considered to render reputable outcomes in terms of minimal chemical utilization and no need of extreme physical conditions. Indiscriminate discharge of toxic organic pollutants in an aqueous environment by anthropogenic activities has posed major health implications for both human and aquatic lives. Hence, numerous research endeavours are in progress to improve the efficiency of degradation and mineralization of organic contaminants. Being an extensively used advanced oxidation process, ultrasonic irradiation can be utilized for complete mineralization of persistent organic pollutants by coupling/integrating it with homogeneous and heterogeneous photocatalytic processes. In this regard, scientists have reported on sonophotocatalysis as an effective strategy towards the degradation of many toxic environmental pollutants. The combined effect of sonolysis and photocatalysis has been proved to enhance the production of high reactive-free radicals in aqueous medium which aid in the complete mineralization of organic pollutants. In this manuscript, we provide an overview on the ultrasound-based hybrid technologies for the degradation of organic pollutants in an aqueous environment.

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Decolorization of Methylene Blue Dye Using Sonocatalytic Followed by Photocatalytic Process

Cited by 9 publications

References 19 publications

Removal of Congo Red Dye Using Green Kyllinga Weed Extract and Silver Nanoparticles as Catalysts

Removal of Congo Red Dye Using Green Kyllinga Weed Extract and Silver Nanoparticles as Catalysts

Nanostructured TiO2 cavitation agents for dual-modal sonophotocatalysis with pulsed ultrasound

Hybrid Advanced Oxidation Processes Involving Ultrasound: An Overview

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