Photodegradation of basic red 51 in hair dye greywater by zinc oxide nanoparticles using central composite design

Yashni, G.; Al-Gheethi, Adel; Arifin, Siti Nor Hidayah; Salleh, Siti Nor Aishah Mohd

doi:10.1007/s11144-020-01792-x

Cited by 17 publications

(3 citation statements)

References 46 publications

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“…ZnO NPs used in this study was bio‐synthesized by green approach using leaves extract of Corriandrum sativum and characterized by Field emission scanning electron microscopy with energy dispersive X‐ray spectroscopy (FESEM/EDX), transmission electron microscopy (TEM), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis and differential scanning calorimetry (TGA/ DSC), Atomic force microscope (AFM), and Raman spectroscopy as reported in the previous work 17,34 …”

Section: Methodsmentioning

confidence: 99%

“…ZnO is a metal oxide semiconductor with a wide, direct band gap (3.37 eV), and a large exciton binding energy (60 meV) 16 . ZnO is very stable, non‐toxic, corrosion resistance, insoluble in water, economical, and can be excited by a wide UV spectrum, ranging from 245 to 380 nm 17 . In addition to that green synthesized ZnO NPs and their mediated azo dye degradation are the latest and effective methods used for treatment of hazards effluent samples.…”

Section: Introductionmentioning

confidence: 99%

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Green ZnO nanoparticles photocatalyst for efficient BR51 degradation: Kinetics and mechanism study

Gopalakrishnan

Al-Gheethi

Arifin

et al. 2020

Env Prog and Sustain Energy

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Dyes are broadly utilized and therefore wastewaters discharged into rivers or public sewage treatment plants are extremely polluted. Thus, the current work aimed to study the kinetic for photocatalytic degradation of Basic Red 51 (BR51) dye in aqueous solution by green synthesized zinc oxide nanoparticles (ZnO NPs). The results revealed that the maximum degradation (98.40%) and chemical oxygen demand (COD) removal (98.08%) was recorded with 150 mg of ZnO NPs, pH 3 and 5 ppm of BR51. ZnO NPs showed high reusability of 95.73%. The photocatalytic degradation of BR51 follows pseudo first‐order kinetics, the apparent rate constants (Kapp) of solar photocatalytic degradation of BR51 were determined as 0.3798, 0.6066, 0.2747 and 0.1307 min−1 for 5, 10, 15 and 20 ppm of BR51 at optimum condition respectively. Phytotoxicity study confirms that the degraded products of BR51 are non‐toxic. This confers the possibility of applying green ZnO NPs for the treatment of industrial wastewaters containing dye pollutants to ensure the environmental sanitation for future generations.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green ZnO nanoparticles photocatalyst for efficient BR51 degradation: Kinetics and mechanism study

Gopalakrishnan

Al-Gheethi

Arifin

et al. 2020

Env Prog and Sustain Energy

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“…7,8 It becomes an alluring option when its contamination removal capability ranges from a very minute amount of ng/L to high concentration of mg/L. [9][10][11] A variety of sorbent materials is being used in the sorption process like activated carbon, biomass, biochar, chitosan, and various nanoparticles etc. 12 An activated carbon proved itself as a good adsorbent due to its high surface area but higher production cost restricts its application as possible adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

Amjed

Ali

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: In the current work, the conventional pyrolysis technique was replaced by new concentrated solar power (CSP) driven technique to fabricate and modify biochar (BC) for more sustainable, energy independent, cost-effective, and ecofriendly pyrolysis processes. Double-glazed vacuum tube was used as a reactor for pyrolysis along with solar tracking system on CSP plant, meanwhile nitrogen flow was maintained during pyrolysis to create an inert environment. Further, a novel approach was used to modifying BC by loading bimetal oxide (Mn-Ferrite) on pristine biochar (P-BC) using pre-and posttreatment to enhance its sorption capacity for anionic aromatic pollutant i.e., Eriochromie Black T (EBT) dye from aqueous solution. RESULTS: Ferric chloride hexahydrate (FeCl3•6H 2 O) and Ferrous sulfate heptahydrate (FeSo 4 •7H 2 O) were used to develop magnetic nanoparticles (MNPs) γ-Fe 2 O 3 by co-precipitation technique. Both Biomass and P-BC were treated with MnCl 2 •4H 2 O and MNPs to fabricate an innovative bi-metal oxide (MnFe 2 O 4 ) biochar. The characterization of modified biochars via Elemental analyzer, SEM (scanning-electron-microscopy), BET (Brunauer-Emmet-Teller), XPS (X-ray-photoelectron-spectroscopy), FTIR (Fourier-transform-infrared-spectra), and VSM (Vibrating-sample-magnetometer), ensured the loading of magnetic bimetal oxide over P-BC. Various kinetic and isotherm models were employed from which pseudo-second-order have proven to be the best fit kinetic model on all types of BCs with highest correlation coefficient value (R 2 = 0.999). While among isotherm models, Langmuir demonstrated best regression coefficient (R 2 = 0.98) and Qmax for EBT was up to 121.95 mg•g −1 .CONCLUSIONS: Altogether, the results indicated that innovative Mn-ferrite loaded BC has better sorption ability to EBT than simple metal oxide of Mn and Fe.

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The photocatalytic degradation kinetics of food dye in aqueous solution under UV/ZnO system

Brahim

Belmedani

Hadoun³

et al. 2021

Reac Kinet Mech Cat

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Photodegradation of basic red 51 in hair dye greywater by zinc oxide nanoparticles using central composite design

Cited by 17 publications

References 46 publications

Green ZnO nanoparticles photocatalyst for efficient BR51 degradation: Kinetics and mechanism study

Green ZnO nanoparticles photocatalyst for efficient BR51 degradation: Kinetics and mechanism study

Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

The photocatalytic degradation kinetics of food dye in aqueous solution under UV/ZnO system

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