Eco-friendly decolorization of cationic dyes by coagulation using natural coagulant Bentonite and biodegradable flocculant Sodium Alginate

Wei, Qunshan; Mcyotto, Felix O.; Chow, Christopher W.K.; Nadeem, Zuhair; Li, Zheng; Liu, Jianshe

doi:10.25177/jeses.5.2.ra.10648

Cited by 10 publications

(7 citation statements)

References 33 publications

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“…Furthermore, the quartz minerals were detected at 26°, then feldspar reflections at 28° (Kumar & Lingfa, 2020).The decreased impurities from quartz minerals are indicated by the decreased peak of 26° due to the different binding forces of NH 4 + intercalant at NHbentonite in Figure 2c (Salah et al, 2019). Shifting of peak denoted basal spacing (d 001 ) expected from the different 2θ of Natural Bentonite at 19.89° to Na-bentonite at 19.9° to NH-bentonite at 16.1° (Miyazaki et al, 2019).FT-IR spectra of all bentonite-intercalated have no significant changes, showing stretch vibration of the interlayer O-H group at 3422 cm -1 and 1635 cm -1(Wei et al, 2020). According to…”

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confidence: 98%

Ammonium-Assisted Intercalation of Java Bentonite as Effective of Cationic Dye Removal

Hakim¹,

Mohadi²,

Mardiyanto³

et al. 2023

J. Ecol. Eng.

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Modification of Java bentonite assists by the multi-step intercalation of sodium and ammonium ions under lowtemperature preparation. The adsorbent was examined to remove rhodamine B and methylene blue dyes in an aqueous solvent. The analysis of structural changes conducted by XRD analysis showed the peak shifting from 19.89° to 16.1° and specific peak spectra FTIR of 2846.93 cm -1 due to increase basal spacing from ammonium intercalation. The total capacities of NH-bentonite, Na-bentonite, and Natural Bentonite adsorption to rhodamine B were 192.308 mg/g, 136.936 mg/g, and 116.279 mg/g, respectively, under acidic conditions. Furthermore, the total capacities of NH-bentonite, Na-bentonite, and Natural Bentonite adsorption to methylene blue were 270.27 mg/g, 158.73 mg/g, and 136.986 mg/g, respectively, under alkaline conditions. The adsorption mechanism described that the rhodamine B and methylene blue removal occurred endothermically, was feasible, and adhered to the kinetics model of pseudo-second-order and Langmuir isotherm. It concluded that the modified Java Bentonite from multistep intercalation is affordable and effective as wastewater treatment.

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confidence: 98%

Ammonium-Assisted Intercalation of Java Bentonite as Effective of Cationic Dye Removal

Hakim¹,

Mohadi²,

Mardiyanto³

et al. 2023

J. Ecol. Eng.

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“…But in the case of the water treatment process (for removal of dye), efficacy (1.8% removal of dye) with the same bio flocculant is attained. [ 46 ] To get a higher flocculation efficacy (83.5% chemical oxygen demand [COD] removal), the optimum flocculant dosage should be 20 mg/L when papermaking waste water is chosen as a media with the composite flocculant (sodium alginate, cationic poly acrylamide, and polyaluminium ferric chloride). [ 47 ] The reason for the above statement is mainly attributed to the combination of two flocculation mechanisms of adsorption followed by bridging.…”

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confidence: 99%

Assessing the efficacy of three bio‐based flocculants in the reclamation of spent lubricating oil

Sarkar,

Datta,

Saha

et al. 2024

Can J Chem Eng

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The current study encompasses a comprehensive assessment of three biopolymeric flocculants on the overall performance of recycling waste lubricating oil to achieve a higher percentage recovery, flocculation efficacy, and better quality of recovered base oil. The findings reveal that with experimental conditions such as (i) mixing time of 80 min; (ii) agitation speed of 400 rpm; (iii) reaction temperature 50°C; (iv) solvent to waste oil ratio 3:1 g/g; and (v) flocculant dosage 1 g/ kg of solvents, 1‐butanol and sodium alginate gives highest percentage yield of 91% followed by corn starch of 89.10% and xanthan gum of 87.18% as bio‐polymer flocculant. The effects of various process parameters of bio‐flocculants on flocculation efficiency are expounded. With the process parameters of (i) initial pH of 5.9, 6.0, and 6.2; (ii) mixing time − 59, 60, and 63 min; and (iii) solution temperature of 59, 60, and 62.2°C, maximum flocculation efficacy (% sludge removal) of 16.24%, 13.01%, and 14.09% were attained for the cases of refined oil treated with sodium alginate, corn starch, and xanthan gum, respectively. Results also reveal that the physicochemical properties of refined base oil treated with 1‐butanol and sodium alginate as bio flocculant are almost close to the virgin lubricating oil. The optimum recovery of high‐quality base oil with the adoption of green technology and solvent–bio flocculant combination can mitigate the environmental impact of waste oil and create an energy‐efficient sustainable condition for the regeneration of re‐refined base oil.

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“…This work informed that the ammonium-intercalated clay performed appropriately in POME removal by coagulation. The proposed mechanism for this coagulation process was completed by neutralizing the POME charge by NH4+ groups, followed by bridging to flocculate due to the outstanding characteristic of clay as a precipitate agent [39,40].…”

Section: Resultsmentioning

confidence: 99%

Palm oil mill effluent (POME) precipitation using ammonium-intercalated clay coagulant

Priatna

Hakim

Alfarizi

et al. 2023

CST

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Clay intercalation has been completed to improve coagulation ability using ammonium ions intercalant via multi-step intercalation. The intercalated clay was confirmed by Scanning Electron Microscope-Energy Dispersive Spectroscopy analysis of expanded lamellar and reduction impurities. Fourier Transform Infra-Red analysis confirmed the sharp and strong peak adsorption at 1448 cm-1 as ammonium (NH4+) bendingvibration, and X-Ray Diffraction analysis confirmed the peak shifting to smaller 2? at 10.08° as increasing basal spacing because of ammonium ion intercalated. The Palm Oil Mill Effluent (POME) coagulation was carried out using contact time and coagulant dose variations to determine the optimum conditions, reaching 45 minutes of coagulation and 0.4 g coagulant was used. Furthermore, the turbidity, free fatty acid, and total suspended solids were measured to reach the reduction values of 93%, 49.7%, and 73.7%, respectively. The reusable study of ammoniumintercalated clay confirmed the stability of the three cycles of coagulation used.

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Eco-friendly decolorization of cationic dyes by coagulation using natural coagulant Bentonite and biodegradable flocculant Sodium Alginate

Abstract: friendly decolorization of cationic dyes by coagulation using natural coagulant Bentonite and biodegradable flocculant Sodium Alginate(2020) Journal of Earth Sciences & Environmental Studies 5(2) pp:51-60

Cited by 10 publications

References 33 publications

Ammonium-Assisted Intercalation of Java Bentonite as Effective of Cationic Dye Removal

Ammonium-Assisted Intercalation of Java Bentonite as Effective of Cationic Dye Removal

Assessing the efficacy of three bio‐based flocculants in the reclamation of spent lubricating oil

Palm oil mill effluent (POME) precipitation using ammonium-intercalated clay coagulant

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