Removal of Anthraquinone Dye via Struvite: Equilibria, Kinetics, Thermodynamics, Fuzzy Logic Modeling

Yetilmezsoy, Kaan; Özçimen, Didem; Koçer, Anıl Tevfik; Bahramian, Majid; Kıyan, Emel; Akbin, Havva Melda; Goncaloğlu, Bülent İlhan

doi:10.1007/s41742-020-00275-0

Cited by 21 publications

(11 citation statements)

References 110 publications

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“…The amount of Cu (II) adsorbed on the FA/Fe 3 O 4 and the concentration of Cu (II) at equilibrium was explained using four common adsorption isotherms: Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura ( Figure 10 and Table 3 ). The related literature offers a complete description regarding the hypothesis, and the equation characteristic for each type of isotherm and kinetic model [ 20 , 43 , 44 , 45 , 46 ].…”

Section: Resultsmentioning

confidence: 99%

Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

et al. 2020

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Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash.

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Section: Resultsmentioning

confidence: 99%

Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

et al. 2020

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“…The mixture emanating from that was subsequently agitated at 300 rpm on a mechanical shaker, and the quantity of dye adsorbed was determined after contact. The effect of the adsorbent dosage (range 5–25 mg) on adsorption was examined by contacting a known mass of the adsorbent with 20 mL of 400 mg L −1 AB25 dye solutions at a controlled pH of 2 and then agitating at 300 rpm 1 . To study the effect of temperature on adsorption, ChA and ChB prepared in a solvent medium of 0.5 mL BmimA/40 mL were used as representative samples for ChA and ChB.…”

Section: Methodsmentioning

confidence: 99%

“…The quantity of the dye adsorbed was then calculated. In addition, the experimental data obtained from this optimisation experiment were applied to adsorption isotherms to study the adsorbent–adsorbate interactions 1,30 …”

Section: Methodsmentioning

confidence: 99%

“…Anthraquinone dyes are among the widely applied and essential classes of commercial dyes often used for dyeing wool, polyamide and leather. Anthraquinone dyes are rich in colour and are primarily used for dyeing textile materials 1,2 . Untreated textile effluents from textile industries contain high concentrations of organic dyes such as anthraquinone type and other organic pollutants 1,3 .…”

Section: Introductionmentioning

confidence: 99%

“…Anthraquinone dyes are rich in colour and are primarily used for dyeing textile materials. 1,2 Untreated textile effluents from textile industries contain high concentrations of organic dyes such as anthraquinone type and other organic pollutants. 1,3 The presence of organic dyes in textile effluents discharged into the environment significantly affects the amount of oxygen in the water body, thereby decreasing the penetration of light through water.…”

Section: Introductionmentioning

confidence: 99%

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Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Saheed

Latip

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND A green synthesis approach involving 1‐butyl‐3‐methyl imidazolium acetate (BmimA) medium was utilised to prepare mesoporous chitosan/activated charcoal composite powder (ChA) and bead (ChB) for the removal of acid blue 25 (AB25) dye from aqueous solution. The composite’s characteristics were examined using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), energy dispersive X‐ray analysis, X‐ray diffraction and Brunauer–Emmett–Teller (BET) analysis. The influence of initial concentration of the dye, pH, contact time and adsorbent dosage on the adsorption and the composite’s stability in acidic and basic solutions was also examined. RESULTS FTIR revealed that chitosan and activated charcoal were connected through O H, N  H, CO and C═O, while AB25 adhered to ChA and ChB through the hydroxyl and amino functional groups. SEM images of ChA and ChB revealed rough‐like surfaces with randomly distributed pores. BET analysis revealed that ChA and ChB are mesoporous, with pore sizes of 2.18 and 2.26 nm. The composites were stable in acidic and basic solutions, and adsorption of AB25 onto the adsorbents was more effective at pH 2. Regeneration of the adsorbents was also influential in NaOH solution. The amount of BmimA used in the composite’s preparation has limited influence on the effectiveness of ChA and ChB for AB25 uptake. The adsorption is best described by Langmuir isotherm in both ChA and ChB with qmax of 3030.3 and 3703.7 mg g−1 respectively, although ChB also conforms to the Freundlich isotherm. The adsorption kinetics fitted well into the pseudo‐second‐order model. CONCLUSION The prepared modified chitosan/activated charcoal powder and bead were able to adsorb the AB25 dye better than other chitosan‐based materials. © 2022 Society of Chemical Industry (SCI).

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Struvite in circular economy: Production techniques, emerging applications and market opportunities

Chandrasekaran,

Zaffar,

Balasubramanian

2024

WIREs Energy & Environment

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Struvite precipitation is an efficient approach to recover phosphorus and ammonium from wastewater to alleviate many operational as well as environmental issues. The sparingly soluble nature of struvite in water makes it a potential slow‐release fertilizer whose adequacy has been investigated in various soil‐based cultivation. However, struvite has diverse applications other than field usage which are yet to be explored. The review highlights the usage of struvite as a fertilizer in soil along with its other applications as a nutrient supplier in hydroponic systems, fire retardants, and sorbent for the adsorption of heavy metals, dye, and gases. The research gaps between the lab and the application of the struvite products in the market for its proper utilization have also been reported. Thus, struvite produced from wastewater can be a promising green chemistry that could replace many costly, synthetic, and harmful products, while conserving phosphorous resource at the same time.This article is categorized under: Climate and Environment > Circular Economy Emerging Technologies > Materials Sustainable Development > Goals

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Removal of Anthraquinone Dye via Struvite: Equilibria, Kinetics, Thermodynamics, Fuzzy Logic Modeling

Cited by 21 publications

References 110 publications

Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Struvite in circular economy: Production techniques, emerging applications and market opportunities

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