Reduction of Copper, Iron, and Lead Content in Laboratory Wastewater Using Zinc Oxide Photocatalyst under Solar Irradiation

Agustina, Tuty Emilia; Habiburrahman, Muhammad; Amalia, Farah; Arita, Susila; Faizal, Muhammad; Novia, Novia; Gayatri, Rianyza

doi:10.12911/22998993/152341

Cited by 5 publications

(9 citation statements)

References 4 publications

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“…Meanwhile in Figure 4, the largest percentage of Cu was 95.43% at pH 7, similar to research by Agustina et al (2022) which states that the optimum conditions for Cu metal are in the pH 7-8 range. This means that the degradation will be effective in alkaline conditions because the degradation of Cu metal in acidic conditions will have an impact on the low adsorption efficiency.…”

Section: Xrd (X-ray Diffraction)supporting

confidence: 85%

“…The synthetic wastewater contains the following heavy metals such as Cd(NO 3 ) 2 , CuSO 4 .5H 2 O, FeCl 3 .6H 2 O, and Pb (NO 3 ) 2 .4H 2 O. Each compound was mixed in 1000 mL of distilled water into a glass beaker (Agustina et al, 2022). Each type of heavy metals concentration was at 20 mg/L.…”

Section: Methods 221 Synthetic Wastewatermentioning

confidence: 99%

“…Furthermore, the optimum condition for reducing Fe metal was found at pH 6, resulting in 96.07%, while for Pb metal, the optimum condition was at pH 8 with a percentage of 95.53%. For the optimum condition of Pb metal, several studies had different results, as reported by Heidari et al (2013) Pb metal is optimum at pH 6, while Agustina et al (2022) stated that pH 8 is the optimum condition for Pb metal degradation. This means that the pH range of 6-8 is very potential and possible to achieve the maximum percentage of degradation.…”

Section: Xrd (X-ray Diffraction)mentioning

confidence: 99%

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Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite

Ramadhini,

Agustina,

Melwita

et al. 2023

indones. j. env. man. sus.

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Heavy metals are the main pollutant substances in the environment. Heavy metals are a type of metal with high density and are very dangerous to living organisms, especially humans. Living organisms can adsorb the bioaccumulative and sedimentation of heavy metals that settle in water. Some compounds which found in wastewater including Cadmium (Cd), Copper (Cu), Iron (Fe), and Lead (Pb). These heavy metals cannot naturally degrade, additional processing is required before it being released into the environment. To prevent environmental pollution impacts, wastewater containing heavy metals must be handled properly and optimally. One method that can be applied for wastewater treatment is degradation by photocatalysis, utilizing the assistance of light. This research is to investigate the effect of pH and irradiation time on the degradation of Cd (cadmium), Cu (Copper), Fe (Iron), and Pb (Lead) heavy metals. To enhance the photocatalytic activity, the synthesis of ZnO-Zeolite nanocomposites was conducted. The ZnO-Zeolite nanocomposites produced were analyzed by SEM-EDX and XRD. The utilization of ZnO-Zeolite nanocomposites is deemed effective in reducing heavy metal concentrations. The degradation with Ultraviolet (UV) light exposure runs within 15-120 minutes with pH variation between 4-8. The degradation of heavy metal runs at 60 minutes and 120 minutes showing an optimum percentage removal of metals approaching 100%. The optimum pH values for Cd, Cu, Fe, and Pb are pH 8, pH 7, pH 6, and pH 8, respectively. The sequential metal degradation percentages are 98.96%, 95.43%, 96.07%, and 95.53%, respectively.

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Section: Xrd (X-ray Diffraction)supporting

confidence: 85%

Section: Methods 221 Synthetic Wastewatermentioning

confidence: 99%

Section: Xrd (X-ray Diffraction)mentioning

confidence: 99%

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Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite

Ramadhini,

Agustina,

Melwita

et al. 2023

indones. j. env. man. sus.

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“…The synthetic wastewater contained the following heavy metals: Cd(NO 3 ) 2 , CuSO 4 •5H 2 O, FeCl 3 •6H 2 O, and Pb(NO 3 ) 2 •4H 2 O. Every substance was dissolved in 1L of distilled water in a glass beaker (Agustina et al, 2022). The concentration of every single heavy metal was 20 milligrams per liter.…”

Section: Heavy Metals Artificial Wastewater Preparationmentioning

confidence: 99%

Synthesis and Characterization of Zinc Oxide-Zeolite Photocatalyst Nanocomposite for Heavy Metals Degradation

Agustina,

Ramadhini,

Melwita

et al. 2024

J. Ecol. Eng.

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Heavy metals are the major contributors to pollution due to their enduring presence and poisonous characteristics. Wastewater that contains heavy metals is classified as harmful and has the potential to contaminate the environment. Large-scale disposal of heavy metal discharged into the environment causes significant environmental harm. Commonly seen heavy metals in water deposits include non-biodegradable metals such as cadmium (Cd), copper (Cu), lead (Pb) and iron (Fe). To mitigate the adverse effects of environmental contamination, it is necessary to handle wastewater containing heavy metals properly and optimally. Photocatalysis is a technology that involves the breakdown of pollutants with the use of light. This study aims to synthesize and characterize the nanocomposite of ZnO-Zeolite photocatalyst on the degradation of Cd, Cu, Fe, and Pb heavy metals. The ZnO-Zeolite nanocomposites were characterized by using SEM-EDX, XRD, and BET methods. The degradation caused by exposure to ultraviolet (UV) light occurs within the time of between 60 to 120 minutes, with a pH range of 6-8. The removal of heavy metals proceeds within a time frame of one hour and two hours, resulting in an optimal percentage removal of metals that approaches 100%. The composite showed a surface area of 19.436 m 2 /g, a pore size of 17.227 Å, and a total pore volume of 0.112 cm 3 /g. The heavy metals Cu, Fe, and Pb exhibited the highest rates of degradation, reaching their maximum percentages after 60 minutes when exposed to ultraviolet radiation under ideal conditions at varying pH levels (pH 6-8). More precisely, the degradation percentage of Cu metal was 95.4% at pH 7, Fe metal achieved 96.1% at pH 6, while Pb metal obtained 95.5% at pH 8. The Cd metal removal percentage was found to be 98.9% under the conditions of a pH of 8 and an irradiation time of 120 minutes, indicating high effectiveness.

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“…Among the various treatment processes adapted for degrading organic micropollutants in water, heterogeneous photocatalysis with titanium dioxide (TiO 2 ) [24], zinc oxide (ZnO) [25], nanocomposites such as tungsten oxide doped (WO 2 /g-C 3 N 4 ) [26], bismuth ferrite (BFO) [27] and other semiconductors have been widely studied. They generate strong oxidant radicals that react non-selectively with pollutants, initiating a series of oxidation reactions that degrade the contaminants and their TPs.…”

Section: Introductionmentioning

confidence: 99%

Towards a Better Understanding of the Back-Side Illumination Mode on Photocatalytic Metal–Organic Chemical Vapour Deposition Coatings Used for Treating Wastewater Polluted by Pesticides

Quintero-Castañeda,

Tendero,

Triquet

et al. 2023

Water

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Pesticides are emerging contaminants that pose various risks to human health and aquatic ecosystems. In this work, diuron was considered as a contaminant model to investigate the influence of the back-side illumination mode (BSI) on the photocatalytic activity of TiO2 coatings grown on Pyrex plates by metal–organic chemical vapour deposition (MOCVD). A photoreactor working in recirculation mode was irradiated at 365 nm with ultraviolet A (UVA) light-emitting diodes in BSI. The degradation of diuron and its transformation products was analysed by high-performance liquid chromatography, ion chromatography, and total organic carbon analysis. The coatings were characterised by X-ray diffraction analysis and scanning electron microscopy. Five coatings containing 3, 7, 10, 12 and 27 mg of TiO2 exhibited different morphology, crystallinity, thickness and photocatalytic activities. The morphology and crystallinity of the coatings had no significant influence on their photocatalytic activity, unlike their mass and thickness. TiO2 contents less than 10 mg limit the photocatalytic activity, whereas those greater than 15 mg are inefficient in the BSI because of their thickness. The maximum efficiency was achieved for coatings of thickness 1.8 and 2 µm with TiO2 contents of 10 and 12 mg, revealing that the photocatalyst thickness controls the photocatalytic efficiency in the BSI.

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Reduction of Copper, Iron, and Lead Content in Laboratory Wastewater Using Zinc Oxide Photocatalyst under Solar Irradiation

Cited by 5 publications

References 4 publications

Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite

Photocatalytic Degradation of Heavy Metals Cd, Cu, Fe and Pb Using ZnO-Zeolite Nanocomposite

Synthesis and Characterization of Zinc Oxide-Zeolite Photocatalyst Nanocomposite for Heavy Metals Degradation

Towards a Better Understanding of the Back-Side Illumination Mode on Photocatalytic Metal–Organic Chemical Vapour Deposition Coatings Used for Treating Wastewater Polluted by Pesticides

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