Ultrasonic assisted adsorption of methylene blue dye and neural network model for adsorption of methylene blue dye by synthesised Mn-doped PbS nanoparticles

Marahel, Farzaneh; Goodajdar, Bijan Mombeni; Niknam, Leila; Faridnia, Maryam; Pournamdari, Elham; Doost, Salva Mohammad

doi:10.1080/03067319.2021.1901895

Cited by 23 publications

(4 citation statements)

References 44 publications

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“…Methylene blue is a water-soluble, toxic, carcinogenic and non-biodegradable cationic dye [25]; hence, it can seriously threaten the ecosys tem, and human health negatively affects the environment [26,27]. Recently, methylene blue dye was absorbed by nanomaterials in aqueous solutions in an easy and efficient approach [28,29]. Nano adsorbents based on s tarch [30,31], hydroxyapatite and eggshell are important for methylene removal.…”

Section: Introductionmentioning

confidence: 99%

Starch nanocomposite containing hydroxyapatite and eggshell for absorbing methylene blue dye from aqueous solution

Motakef kazemi,

Nassaj

2023

Anal. Method Environ. Chem. J.

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Today, polymer nanocomposites (NCs) have become important as suitable candidates for nano absorbents due to their simplicity and cheapness. This research investigated a nano absorbent based on starch nanocomposite containing hydroxyapatite (HA) and eggshell inspired by nature to absorb methylene blue (MB) as a toxic cationic dye from aqueous solution. The effect of temperature, pH, and the ratio of hydroxyapatite and eggshell absorbent on the amount of absorption after immersion in an aqueous medium was measured. The samples were identified by the UV-Vis spectrophotometer, scanning electron microscope (SEM), X-ray energy dispersive spectrometry (EDS), Fourier transform infrared (FTIR), X-ray diffraction (XRD), and BET analysis. Based on the results, the biological nanocomposite of starch-containing 0.125 g hydroxyapatite and eggshell, inspired by nature, has the highest absorption (88%) of methylene blue dye from the aqueous solution quickly. Increasing temperature, increasing pH, and decreasing the amount of nano absorbent increased the absorption of methylene blue dye from the aqueous solution. The results show that starch nanocomposite containing hydroxyapatite and eggshell can absorb methylene blue dye and have good potential for various applications, especially in medical and industrial fields.

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Section: Introductionmentioning

confidence: 99%

Starch nanocomposite containing hydroxyapatite and eggshell for absorbing methylene blue dye from aqueous solution

Motakef kazemi,

Nassaj

2023

Anal. Method Environ. Chem. J.

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“…Waste resulting from textile industries contains dyes with concentrations of 20-30 mg/L, which are hazardous and carcinogenic [1,2]. One of the dyes that are often used in industry is Methylene Blue (MB) (C 16 H 18 N 3 SCl), which is a heterocyclic aromatic molecule [2,3]. The structure formula of MB can be seen in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…The structure formula of MB can be seen in Figure 1. The MB has harmful effects such as vomiting, increased heart rate, cyanosis, digestive system irritation if inhaled, and skin irritation [3,4]. Because of the presence of aromatic amines in the MB structure, the MB is difficult to decompose [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…With the addition of dye-sensitizers, TiO2 becomes more responsive to visible light. Furthermore, dyes can easily adhere to the catalyst surface; thus, the electrons readily achieve an excited state by photon absorption in the visible light Commonly, MB can be treated through physical and/or chemical treatments, including filtration [6,7], coagulation and precipitation [8,9], adsorption [3,10], ozonation [11], reverse osmosis [12], ion exchange [13], and advanced oxidation [14,15]. However, these treatments need a high operating cost and result in a low pollutant removal efficiency, a high selectivity just for a certain dye group, and harmful intermediate compounds [16].…”

Section: Introductionmentioning

confidence: 99%

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The Addition of Anthocyanin as a Sensitizer for TiO2 Nanotubes in a Combined Process of Electrocoagulation and Photocatalysis for Methylene Blue Removal

Kustiningsih,

Pujiastuti,

Sari

et al. 2023

Sustainability

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Photocatalysis with TiO2 semiconductors is one of several potential methods for removing Methylene Blue (MB) that is environmentally friendly, relatively cheap, and effective. The capability of TiO2 photocatalysts for degrading MB can be improved by modifying the morphology of TiO2 into nanotubes and adding anthocyanin sensitizers. The objective of this study was to investigate the effect of anthocyanin sensitizer addition for TiO2 nanotubes on MB removal using a combined process of electrocoagulation and photocatalysis. TiO2 nanotubes were prepared through an anodization method with a glycerol electrolyte containing NH4F of 0.5%w/v and water of 25%v/v. The cathode and anode used in the electrocoagulation process were 316 stainless steel and aluminum, respectively. The characteristics of the resulting TiO2 nanotubes were analyzed using SEM-EDX, UV–Vis DRS, and XRD analyses. The results showed that the electrocoagulation at a pH of 10 and a voltage of 50 volts resulted in an MB removal efficiency of 57.88%. In the photocatalysis process, sensitizer addition can increase the MB removal efficiency from 19.71% to 29.06%. Furthermore, a combined process of electrocoagulation and photocatalysis without and with sensitizer addition resulted in MB removal efficiencies of 59.66% and 64.30%, respectively.

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Utilization of Qihuang residue-derived hydrogels for efficient removal of heavy metals and dyes from aqueous solutions

Yin,

Xu,

Wang

2024

Clean Techn Environ Policy

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Ultrasonic assisted adsorption of methylene blue dye and neural network model for adsorption of methylene blue dye by synthesised Mn-doped PbS nanoparticles

Cited by 23 publications

References 44 publications

Starch nanocomposite containing hydroxyapatite and eggshell for absorbing methylene blue dye from aqueous solution

Starch nanocomposite containing hydroxyapatite and eggshell for absorbing methylene blue dye from aqueous solution

The Addition of Anthocyanin as a Sensitizer for TiO2 Nanotubes in a Combined Process of Electrocoagulation and Photocatalysis for Methylene Blue Removal

Utilization of Qihuang residue-derived hydrogels for efficient removal of heavy metals and dyes from aqueous solutions

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