Biodegradation of textile dyeing industry wastewater using modified anaerobic sequential batch reactor – Start-up, parameter optimization and performance analysis

Rajasimman, M.; Babu, S. Venkatesh; Rajamohan, N.

doi:10.1016/j.jtice.2017.01.027

Cited by 65 publications

(21 citation statements)

References 30 publications

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“…To do so, various technologies have been developed for dye effluents treatment. For instance, adsorption [ 7 ], anaerobic treatment [ 8 ], filtration [ 9 ], advanced oxidation processes [ 10 ], and coagulation-flocculation [ 11 ] were evaluated in several former studies.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

et al. 2020

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Dye invasion in wastewaters is undeniably one of the crucial environmental concerns in addition to the supplement of toxic synthetic chemical flocculants used for color removal using the conventional coagulation-flocculation process. With the aim to improve the flocculation stage in terms of reagents safety and ensure dyes removal, the present study explores the flocculating effectiveness of two natural, stable, and eco-friendly cactus formulations, namely 60 °C oven-dried (DP) and lyophilized (LP) cladodes. Both formulations were assessed to treat cationic (Methylene blue; MB) and anionic (Methyl Orange; MO) dye solutions as a substitution attempt for the currently questioned employed synthetic chemical flocculants. Obtained results demonstrate that, in conjunction with alum as coagulant, the lyophilized powder (LP) bio-based flocculant appears to be the most efficient cactus formulation, showing a significant color (83%) and a turbidity (69%) abatement for the cationic dye (MB) and, respectively, 63% and 62% for the anionic one (MO). Additionally, the flocculation activity of the LP formula remained high over an eight-month period of storage. Moreover, based on the Fourier transform infrared (FTIR) spectroscopic analysis and the chemical characterization of cactus formulations, the occurring flocculation mechanisms of the dye removal are presumed to be based on both adsorption and bridging phenomena. Further, the significant color and turbidity decline achieved upon the addition of the lyophilized cactus cladodes powder (LP), enhancing thus the coagulation performance of the alum-based coagulant, proved the effectiveness of this bio-flocculant compared to the commonly used chemical flocculant (polyacrylamide). Hence, it was suggested that lyophilized cactus cladodes as a natural flocculant could be one of the effective surrogates to chemical flocculants conventionally used in wastewater treatment for the sake of a safer and sustainable environment.

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Section: Introductionmentioning

confidence: 99%

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

et al. 2020

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“…These synthetic dyes which are generally high molecules of molar mass, and containing several benzene nuclei (Song and Li 2009), can create harmful impact on the environment (El Bouraie and El Din 2016), particularly on surface waters and soils, because they are resistant to biological degradation (Imran et al 2015). Several textile industries from the developing countries which are unable to treat process wastewater often get rid of them directly, thus polluting the surface waters (Dellamatrice et al 2016;Rajasimman et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

et al. 2019

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Iron-based nanoparticles were formed in the pores of a micro-and mesoporous activated carbon made from banana spike by the impregnation of iron sulfate at various ratios and further pyrolysis, in order to prepare three catalysts AC@Fe/1, AC@ Fe/2, AC@Fe/3 having iron mass contents of 1.6%, 2.2% and 3.3%, respectively. The pore size distributions, transmission electron microscope observations and X-ray photoelectron spectroscopy analyses have revealed that iron-based nanoparticles of 1-50 nm diameter, containing O and P, are located mainly in the supermicropores and mesopores of the activated carbon. Catalysts have been used to remove Rhodamine B in an aqueous solution by the heterogeneous Fenton process. AC@Fe/3 catalyst has allowed achieving 93% of solution discoloration compared to 87.4% for AC@Fe/2 and 78.5% for AC@Fe/1 after 180 min in batch reaction. The catalytic efficiency of AC@Fe/3 is attributed to the highest dispersion of the iron-based nanoparticles in the activated carbon porosity. The effects of hydrogen peroxide and initial dye concentration, pH, catalyst amount and temperature on the Rhodamine B removal kinetics catalyzed by AC@Fe/3 were studied. This catalyst showed remarkable performances of the Rhodamine B mineralization and possibility of recycling.

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“…Due to process inefficiency, it is reported that 10-15% of the dyes are lost into the waste streams [1]. Traditional textile industries approximately 100 L of process water for every kilogram of textile processed [2]. The release of dyes into the water streams causes ecological imbalance by affecting the penetration of sunlight, reducing the dissolved oxygen, causing eutrophication, inducing anaerobic digestion and entering the food chain through aquatic organisms.…”

Section: Introductionmentioning

confidence: 99%

Effect of operating parameters on dye wastewater treatment using Prosopis cineraria and kinetic modeling

Rajamohan

Rajasimman

2019

Environmental Engineering Research

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Textile dye effluent treatment was investigated using a novel biosorbent synthesized from Prosopis cineraria. The influence of operating variables, namely initial COD of the effluent (352-1,303 mg/L) and adsorbent dosage (0.25-4.0 g/L) on the removal efficiency was studied. The results of the biosorption experiments indicated that the equilibrium COD removal efficiency attained was 68% and COD uptake achieved was 90.52 mg/g at an optimal sorbent dose (2.0 g/L). Pseudo second order model fitted well to the experimental data and the rate constant was estimated as 0.098 x 10<sup>-5</sup> g /(mg min) .Chemisorption was identified as the removal mechanism involved. Power function model represented the kinetic data in selected range of COD and kinetic constants were estimated. XRF analysis of the biosorbent confirmed the presence of potassium oxide and calcium oxide as the two major components.

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Biodegradation of textile dyeing industry wastewater using modified anaerobic sequential batch reactor – Start-up, parameter optimization and performance analysis

Cited by 65 publications

References 30 publications

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

Effect of operating parameters on dye wastewater treatment using Prosopis cineraria and kinetic modeling

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