Photocatalytic degradation of basic red 51 dye in artificial bathroom greywater using zinc oxide nanoparticles

Yashni, G.; Al-Gheethi, Adel; Arifin, Siti Nor Hidayah; Shanmugan, Vikneswara Abirama; Kassim, Amir Hashim Mohd

doi:10.1016/j.matpr.2020.01.395

Cited by 14 publications

(6 citation statements)

References 21 publications

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“…In a recent study by Yashni et al . (2020), they revealed that 89.01% of Basic Red 51 was decolourized in artificial bathroom grey water by ZnO. This proves the capability of ZnO to degrade XOCs in grey water which further indicates that more studies are needed to explore the potential of ZnO in treating grey water.…”

Section: Photocatalysis Technique For the Treatment Wastewatermentioning

confidence: 87%

“…Firstly for the aggregation of particles can be prevented and sustain an even colloidal dispersion as a stabilizing agent. Second, it is used as a crystal‐habit modifier or shape‐control agent, stimulating growth onto particular crystal faces, while inhibiting growth onto others (Vidya et al ., 2017; Yashni et al ., 2020). Hence, it can be summarized that PVP is generally used as a structure‐directing reagent or surfactant in the chemical process to control nucleation and crystal growth, stabilisation and reduction of surface tension of metal NPs (Dickinson et al ., 2012).…”

Section: Photocatalysis Technique For the Treatment Wastewatermentioning

confidence: 99%

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Photocatalysis of xenobiotic organic compounds in greywater using zinc oxide nanoparticles: a critical review

Yashni

Al‐Gheethi

Hossain

et al. 2020

Water & Environment J

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The direct discharge of raw bathroom greywater has increased the concentrations of various pollutants in the water bodies. Typically, greywater contains large quantities of xenobiotic organic compounds (XOCs) owing to an increase in consumption of personal care and bath products. Therefore, it urges for a suitable technology to eliminate these compounds from contaminated waters. Photocatalytic degradation using Zinc Oxide nanoparticles (ZnO NPs) has the potentiality to eliminate various XOCs. However, ZnO NPs have high tendency to aggregate, which may lower the photocatalytic degradation rate. Therefore, there is an urgency to modify ZnO NPs to overcome the limitation. The present review was conducted to determine a suitable method for the modification ZnO NPs. Besides, the potential of the modified ZnO NPs in degrading XOCs in greywater as a photocatalyst was also discussed.

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Section: Photocatalysis Technique For the Treatment Wastewatermentioning

confidence: 87%

Section: Photocatalysis Technique For the Treatment Wastewatermentioning

confidence: 99%

Photocatalysis of xenobiotic organic compounds in greywater using zinc oxide nanoparticles: a critical review

Yashni

Al‐Gheethi

Hossain

et al. 2020

Water & Environment J

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“…Greywater from households is one of the sources of water pollutants. The composition of greywater varies extensively from household to household based on the cosmetics, detergents, hair dyes and other personal habits of residents (Yashni et al 2020a(Yashni et al , 2020b(Yashni et al , 2020c. Some sanitary specialists described the greywater as water that is lower in quality than potable water, but of higher quality than black water (Leong et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Photocatalysis is a green method owing to its non-energy intensive and low temperature method for degradation and mineralization of pollutants (Yashni et al 2020a(Yashni et al , 2020b(Yashni et al , 2020c. The method acts based on the illumination of semiconductors such as TiO 2 and ZnO, which can be induced to the electron-hole pairs by photons with a proper energy level (Fan et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Reusability performance of green zinc oxide nanoparticles for photocatalysis of bathroom greywater

Yashni

Al-Gheethi

2020

Water Practice and Technology

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This study aims to investigate the potential of green zinc oxide nanoparticles (ZnO NPs) in reusability performance for photocatalysis of bathroom greywater. It was found that ZnO NPs photocatalytic treatment of real bathroom greywater (RBGW) effluent reduces both the COD and BOD5 concentrations by 72.01, 62.75 and 57.79% (COD) and 70.18, 60.32 and 57.56% (BOD5) respectively for the first, second and third cycle. Meanwhile for the photocatalysis of ABGW, it was observed that COD and BOD5 were removed by 82.27, 68.27 and 60.96% (COD) and 82.91, 74.37 and 60.39% (BOD5) for the first, second and third cycle respectively. Besides, TSS and turbidity were reduced by 52.34, 46.85 and 37.98% (TSS) and 80.38, 67.65 and 56.81% (turbidity) respectively in RBGW and for ABGW, TSS and turbidity were reduced by 60.94, 52.37 and 41.95% (TSS) and 80.68, 72.63 and 69.91% (turbidity) for the first, second and third experimental run respectively. This designates that green ZnO NPs can be reused multiple times as an effective photocatalyst. However, ZnO NPs were used in the dispersed form, which causes difficulty in the separation of ZnO NPs from the greywater. Thus, further investigation in producing appropriate fixed film should be focused. Moreover, phytotoxicity analysis of V. radiate seeds in the treated ABGW and RBGW was not significantly different from their germination in water. This assured the less lethal nature of the degradation metabolites in greywater effluent. This investigation would be a solution to wastewater treatment plant for reusing photocatalyst in order to achieve the development of advanced and greener technologies. Highlight The potential of green ZnO Nanoparticles in degrading bathroom greywater is discussed. The reusability performance of green zinc oxide nanoparticles for photocatalysis of bathroom greywater is also discussed.

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“…These hair dyes have aromatic rings linked together by an azo group (–N=N–) and have immense characteristics of resonance and p‐conjugated bond. Therefore, these dyes are very stable and resistant to natural dye degradation 2,3 . Colored wastes are detrimental to aquatic life in sea, rivers, and lakes as it prevents the penetration of light and disrupt the biological processes in water bodies 4,5 …”

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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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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Photocatalytic degradation of basic red 51 dye in artificial bathroom greywater using zinc oxide nanoparticles

Cited by 14 publications

References 21 publications

Photocatalysis of xenobiotic organic compounds in greywater using zinc oxide nanoparticles: a critical review

Photocatalysis of xenobiotic organic compounds in greywater using zinc oxide nanoparticles: a critical review

Reusability performance of green zinc oxide nanoparticles for photocatalysis of bathroom greywater

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

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