Optimization Based on Response Surface Methodology of Anionic Dye Desorption From Two Agricultural Solid Wastes

Khomri, Mohammed El; Messaoudi, Noureddine El; Dbik, Abdellah; Bentahar, Safae; Fernine, Yasmine; Jada, Amane

doi:10.1007/s42250-022-00395-4

Cited by 35 publications

(9 citation statements)

References 65 publications

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“…Maximum removal efficacy was observed in a medium with a pH of 5 after 15 min. This trend can be attributed to the following elements: (a) A test apparatus operating under identical conditions will produce analogous results (equal production of hydroxyl radicals at each initial R195 concentration) 44 ; (b) the generation of hydroxyl radicals is proportional to the initial concentration of R195 40 . Therefore, an increase in the number of dye molecules can lead to the saturation of active sites on the surface of the photocatalyst and inadequate production of hydroxyl radicals 42 .…”

Section: Resultsmentioning

confidence: 95%

Capability of TiO2 and Fe3O4 nanoparticles loaded onto Algae (Scendesmus sp.) as a novel bio-magnetic photocatalyst to degration of Red195 dye in the sonophotocatalytic treatment process under ultrasonic/UVA irradiation

Zamani,

Rastgar,

Hedayati

2023

Sci Rep

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In this study, the magnetic photocatalyst Scendesmus/Fe3O4/TiO2 was synthesized, and its sonophotocatalytic properties in relation to the degradation of the Red195 dye were evaluated. Particles were characterized using a scanning electron microscope (SEM), Fourier's transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and a vibrating-sample magnetometer (VSM). At a pH of 5, a photocatalyst dosage of 100 mg, an initial R195 concentration of 100 mg/l, an ultrasound power of 38W, and an exposure time of 20 min, the maximum Red195 removal efficiency (100%) was achieved. After five cycles of recycling, the composite's sonophotocatalytic degradation stability for R195 remains above 95%. Experiments on scavenging indicate that electrons (h+) and hydroxyls (OH-) are indispensable decomposition agents. The removal of R195 by Scendesmus/Fe3O4/TiO2 is consistent with the pseudo-first-order kinetic, Freundlich, and Henderson's isotherm models, as determined by kinetic and isotherm investigations. The negative activation enthalpy of the standard (ΔH°) illuminates the exothermic adsorption mechanism. The increase in standard Gibbs activation free energy (ΔG°) with increasing temperature reveals the process is not spontaneous. As indicated by the negative value of the standard entropy of activation (ΔS°), activation of the reactants resulted in a loss of freedom.

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Section: Resultsmentioning

confidence: 95%

Capability of TiO2 and Fe3O4 nanoparticles loaded onto Algae (Scendesmus sp.) as a novel bio-magnetic photocatalyst to degration of Red195 dye in the sonophotocatalytic treatment process under ultrasonic/UVA irradiation

Zamani,

Rastgar,

Hedayati

2023

Sci Rep

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“…10 Wastewater dyes or phenolic chemicals can be removed using natural biomass as an adsorbent. 11,12 Yeast is an inexpensive, readily available raw material and environmentally friendly biosorbent. 13 Yeast cell walls contain many functional groups, such as carboxyl, amino, and hydroxyl groups, and yeast has been used to treat pollutants in water, such as phenol, 14 Congo red, 13 acid orange 7, 15 and reactive red 11.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of cationic/anionic dyes and endocrine disruptors by yeast/cyclodextrin polymer composites

Lv,

Wang,

Wang

et al. 2024

RSC Adv.

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“…Recently, more and more attention has been paid to the high value-added products prepared from biomassderived material [30][31][32]. Porous carbon adsorbent can be obtained from biomass-derived materials, such as coconut shell [33], lotus stem, maple leaf, garlic peel, and nutshell [34,35].…”

Section: Introductionmentioning

confidence: 99%

Potassium citrate-derived porous carbon with high CO2 capture and Congo red adsorption performance

Wang

Zhang

et al. 2023

Environ Sci Eur

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The objective is to achieve the goal of carbon neutrality, controlling CO2 emissions is a primary problem to be solved in the current environmental protection field. Eliminating the environmental pollution of dyes in industrial wastewater is also an urgent problem to be solved in the field of environmental protection. The adsorption technique is an effective way to deal with these two issues. Developing high-efficiency adsorbents is an essential work in the adsorption field. In this work, a simple carbonization method has been developed to prepare porous carbon. The morphology and structure of the prepared porous carbon were investigated by scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and surface area measurement. By studying the influence of preparation conditions on the structure and properties of the prepared carbon materials, it was found that the carbon materials prepared at 900 ℃ (PCMCA-900) exhibited a high specific surface area of 1476 m2 g−1 and a high total pore volume of 0.951 cm3 g−1. The PCMCA-900 showed the highest CO2 uptake of 7.67 mmol g−1 at 0 ºC and the adsorption capacity of PCMCA-900 decreased by less than 5% after 10 times recycling. Moreover, when PCMCA-900 was used as an adsorbent to remove Congo red in water, an adsorption capacity of 652.3 mg g−1 was achieved. Therefore, potassium citrate-derived porous carbon is a desirable candidate for excellent CO2 adsorption and Congo red in industrial wastewater.

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Optimization Based on Response Surface Methodology of Anionic Dye Desorption From Two Agricultural Solid Wastes

Cited by 35 publications

References 65 publications

Capability of TiO2 and Fe3O4 nanoparticles loaded onto Algae (Scendesmus sp.) as a novel bio-magnetic photocatalyst to degration of Red195 dye in the sonophotocatalytic treatment process under ultrasonic/UVA irradiation

Capability of TiO2 and Fe3O4 nanoparticles loaded onto Algae (Scendesmus sp.) as a novel bio-magnetic photocatalyst to degration of Red195 dye in the sonophotocatalytic treatment process under ultrasonic/UVA irradiation

Adsorption of cationic/anionic dyes and endocrine disruptors by yeast/cyclodextrin polymer composites

Potassium citrate-derived porous carbon with high CO2 capture and Congo red adsorption performance

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