Application of response surface methodology for modeling and optimization of malachite green adsorption by modified sphagnum peat moss as a low cost biosorbent

Sarbisheh, Farimah; Norouzbeigi, Reza; Hemmati, Farnaz; Shayesteh, Hadi

doi:10.5004/dwt.2016.1728

Cited by 8 publications

(4 citation statements)

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“…Hence, these dyes are processed using a variety of procedures commonly employed in industrial effluent treatment, such as membrane process (Liu et al, 2020;Rashidi et al, 2015), solidification (Khayat and Zali-Boeini, 2019), ion exchange (Joseph et al, 2020), electrochemical oxidation (Rodríguez-Narváez et al, 2021), and absorption (Nouri et al, 2021;Saleh et al, 2021). However, among present treatment methods, adsorption is the most effective solution for removing contaminants from an aquatic environment due to its ease of usage and high efficiency (Nodehi et al, 2022;Sarbisheh et al, 2017;Tran et al, 2020). Absorption techniques can especially deal with different types of color.…”

Section: Introductionmentioning

confidence: 99%

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Hiep¹,

Thu²,

Quyen³

et al. 2022

Environ. Nat. Resour. J.

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In this study, biochar made from the Sesbania sesban plant, under slow pyrolysis at 300°C was used to adsorb methylene blue (MB) in aqueous solution. The biochar properties were clarified by diverse analytical methods such as FTIR, SEM, and BET. The results indicated that the surface of biochar was relatively smooth, had porous texture, and stacked evenly. In addition, the biochar had a large specific surface area of 561.8 m2/g and the pHpzc value was 6.9. The effect of adsorbent dosage, initial pH, contact time, and concentration of dye solution on biochar were investigated. The optimum conditions for MB adsorption were found at the MB concentration of 50 mg/L, initial pH of 11, biochar mass of 0.6 mg, and contact time of 30 min. Under these optimal conditions, MB dye removal efficiency was above 90%. Adsorption isotherm data were fitted with the Langmuir isotherm model (R2=0.897) suggesting the adsorption was monolayer, and its maximum adsorption capacity was about 6.6 mg/g. The adsorption kinetic models showed that the linear pseudo-second-order by R2=0.999 was well fitted. The results indicated the enormous potential of Sesbania sesban plant to produce biochar as a low-cost and rather high-effective adsorbent for dye removal from wastewater as well as water quality improvement.

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Section: Introductionmentioning

confidence: 99%

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Hiep¹,

Thu²,

Quyen³

et al. 2022

Environ. Nat. Resour. J.

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“…It was filtered to obtain the resultant solution after 36 h. The concentrations of phosphate (ammonium molybdate spectrophotometry) and methylene blue were measured by an ultraviolet–visible spectrophotometer (SP-756P, China) at 650 and 660 nm, respectively . The following formula is used to calculate the adsorption capacity. , …”

Section: Methodsmentioning

confidence: 99%

Properties and the Application of Sludge-Based Biochar in the Removal of Phosphate and Methylene Blue from Water: Effects of Acid Treating

et al. 2022

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Sludge-based biochar could be used to remove phosphate and methylene blue (MB) from water. It is a highly efficient way to treat the sludge and contaminated water synergistically. The high ash content in sludge greatly influenced the adsorption property of the resultant biochar. In this work, the influence of carbonization-activation and acid treating on the adsorption performance of the sludge-based biochar was evaluated. The composition, structure, and surface properties of biochar were improved after acid treating. The biochar was obtained in a sequence of carbonization-activation first and then acid treating, providing the optimal adsorption property. Zn550-H and Zn750-H showed excellent adsorption capacity to phosphate and MB, respectively. The adsorption process was well described by the pseudo-first-order and pseudo-second-order kinetic models. Isothermal studies implied that it was controlled by multiple processes. What is more, sludge-based biochar performed well in the adsorption of phosphate and MB from weakly acidic to alkaline conditions, which was beneficial to utilize the sludge-based biochar in water remediation practically.

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“…Supporting Information for this article can be found under DOI: https://doi.org/10.1002/ceat.202200102. This section includes additional references to primary literature relevant for this research [34][35][36].…”

Section: Supporting Informationmentioning

confidence: 99%

Deep Eutectic Solvents and Layered Double Hydroxides in Solid‐Phase Extraction of Antidepressant Drugs

Khezeli

Daneshfar

2022

Chem Eng & Technol

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For the first time, an acidic deep eutectic solvent (DES) comprised of malonic acid and ChCl was used to complete dissolution of Co‐Al, Ni‐Al, and Cu‐Al layered double hydroxides (LDHs) as sorbents in the vortex‐assisted in‐situ solid‐phase extraction of doxepin and amitriptyline followed by high‐performance liquid chromatography‐ultraviolet (HPLC‐UV). Moreover, the ability of urea:ChCl and ethylene glycol:ChCl was investigated to dissolve the LDH sorbents. The extraction conditions were optimized in terms of vortex time, molar ratio of Co2+:Al3+, NaOH concentration, and volume of DES based on the Box‐Behnen design. The linearity, limit of detection, and coefficient of determination R2 for both analytes were assessed as well. Recoveries of more than 93.1 % with relative standard deviations of less than 5.3 % were achieved for spiking urine and pharmaceutical formulation samples.

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Application of response surface methodology for modeling and optimization of malachite green adsorption by modified sphagnum peat moss as a low cost biosorbent

Cited by 8 publications

References 50 publications

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Biochar Derived from Sesbania sesban Plant as a Potential Low-Cost Adsorbent for Removal of Methylene Blue

Properties and the Application of Sludge-Based Biochar in the Removal of Phosphate and Methylene Blue from Water: Effects of Acid Treating

Deep Eutectic Solvents and Layered Double Hydroxides in Solid‐Phase Extraction of Antidepressant Drugs

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