Malachite green removal using ionic flocculation

Teixeira, Yago Neco; Melo, Ricardo Paulo Fonsêca; Fernandes, Manoel Reginaldo; Carmo, Shirlene Kelly Santos; Neto, Eduardo Lins de Barros

doi:10.2166/wpt.2022.054

Cited by 10 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Above 11 (considered to be the optimal pH), the increase in pH had no influence on the MB removal efficiency. Similar results were observed for the removal of phenol [ 38 ] and malachite green dye [ 39 ] by ionic flocculation.…”

Section: Resultssupporting

confidence: 82%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

Self Cite

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 82%

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Teixeira

Filho²,

Bacurau³

et al. 2022

Heliyon

Self Cite

View full text Add to dashboard Cite

“…If RL > 1, adsorption is not favorable; if RL = 1, adsorption is linear; if 0 < RL < 1, adsorption is favorable; and if RL = 0, adsorption is irreversible (Teixeira et al 2022).…”

Section: Analysis Of Experimentsmentioning

confidence: 99%

Adsorption of phosphate in aqueous solution by ash from the fruit peel of Caryocar coriaceum Wittm: adsorption characteristics and behavior

Filho

Teixeira

Bacurau

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

High phosphate concentrations in water may disturb the ecological balance, deteriorate water quality, cause water eutrophication and affect the smart and sustainable use of water in human activities. With that in mind, the goal of this work was to study the adsorptive capacity of pequi peel ash (PPA) and its e ciency in the removal of phosphate (PO 4 3− ) from aqueous solutions, while measuring the kinetics, equilibrium and thermodynamics of the process. The pequi is the fruit of the species Caryocar coriaceum WITTM and is widely found in the Cariri region, in the state of Ceará, Brazil. The processing of this fruit generates a large amount of waste, especially the fruit´s peel, which lacks any further use. These peels were used and tested in this study as raw material for the production of a bioadsorbent. PPA were produced at 500°Cin an oxidative atmosphere. The XRF and EDS analysis of PPA after contact with an aqueous PO 4 3− solution con rmed an increase of PO 4 3− content from 1.5-3.7%, thus con rming the adsorption of PO 4 3− . The Elovich and Langmuir models adequately described the kinetics and the equilibrium state of the process, respectively. The highest PO 4 3− adsorption capacity was approximately 79.50 mg g − 1 at 10°C. PO 4 3− adsorption by pequi peel ash is a spontaneous, favorable and exothermic process with structural changes. The highest removal e ciency was 97.08% for a PO 4 3− concentration of 100 mg L − 1 . Therefore, PPA has shown potential as an excellent natural bioadsorbent.The pequi fruit (Caryocar coriaceum WITTM) can be widely found in the Cariri region (state of Ceará, Brazil), where it plays an important socioeconomic role. The extraction of pequi generates a large amount of waste, especially peels, which are not used and cause discomfort, bad smell, slurry and the propagation of disease vectors.Pequi peels (PP), which are an agricultural waste, can be used as raw material for the production of bioadsorbents able to remove contaminants from aqueous solutions, as they are easy and cheap to obtain.

show abstract

“…Consequently, there is an urgent need to develop an economical and sustainable treatment methodology for the water containing the dye. Typical methods of eliminating similar type of dyes include chemical oxidation (Zhu et al, 2020), coagulation (Getaye et al, 2017), microbiological degradation (Vignesh et al, 2020), photocatalysis (Sikirman et al, 2016), flocculation (Teixeira et al, 2022), and adsorption (Tewari et al, 2017). Nevertheless, the majority of these techniques have certain drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Ni-Co doped TiO2 catalyst for efficient photocatalytic degradation of Malachite Green under UV and direct sunlight

Mhalshekar,

Pawar,

Gaydhane

et al. 2024

Preprint

View full text Add to dashboard Cite

In the present study combustion synthesized TiO2 nanoparticles were wet impregnated with Ni, Co and Ni-Co, respectively. The photocatalytic performance of synthesized catalysts was evaluated against Malachite Green dye. The synthesized materials were characterized for crystallite size, surface morphology, elemental composition, and band-gap using X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and ultra-violet diffused reflectance spectroscopy, respectively. The optimum parameters for maximum degradation were found by examining the effects of catalyst loading, initial dye concentration and light intensity. A comparative analysis of Ni-doped, Co-doped, and Ni-Co-doped TiO2 photocatalysts was conducted. The results indicate superior photocatalytic activity of Ni-Co doped TiO2 among the catalysts investigated under UV light. The degradation kinetics was studied and the underlying degradation mechanism is proposed with the help of LC-MS analysis. Furthermore, a comparative study on the degradation under solar radiation using Co-Ni/TiO2 was conducted.

show abstract

Malachite green removal using ionic flocculation

Cited by 10 publications

References 50 publications

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Removal of Methylene Blue from a synthetic effluent by ionic flocculation

Adsorption of phosphate in aqueous solution by ash from the fruit peel of Caryocar coriaceum Wittm: adsorption characteristics and behavior

Ni-Co doped TiO2 catalyst for efficient photocatalytic degradation of Malachite Green under UV and direct sunlight

Contact Info

Product

Resources

About