Desalination and Detoxification of Textile Wastewater by Novel Photocatalytic Electrolysis Membrane Reactor for Ecosafe Hydroponic Farming

Aydin, Muhammed Iberia; Ozaktac, Damla; Yüzer, Burak; Dogu, Mustafa; İnan, Hatice; Ökten, Hatice Eser; Coşkun, Serdar; Selçuk, Hüseyin

doi:10.3390/membranes12010010

Cited by 7 publications

(2 citation statements)

References 57 publications

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“…A combination of chemical/physicochemical/advanced oxidation and biological methods has also been suggested for the treatment of textile effluents. In a recent study (Aydin et al, 2021), a combination of biological (cell-based) followed by photo-electrocatalysis was used for desalination, disinfection, and toxicity removal. While the advantage of such a method is that it allows the reuse of water, the biological systems eventually cease to grow in the effluent and result in the choking of the membrane.…”

Section: Discussionmentioning

confidence: 99%

Detoxification and decolorization of complex textile effluent in an enzyme membrane reactor: batch and continuous studies

et al. 2023

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There is an urgent need to look for bio-based technologies to address the pollution related to textile dyes in waterbodies. The aim of this study was to evaluate an engineered laccase variant, LCC1-62 of Cyathus bulleri, expressed in recombinant Pichia pastoris, for the decolorization and detoxification of real textile effluent. The partially purified laccase effectively (~60–100%) decolorized combined effluent from different dyeing units at a laccase concentration of 500 U/L at a 50-mL level. Decolorization and detoxification of the combined effluents, from a local textile mill, were evaluated at 0.3 L volumetric level in a ray-flow membrane reactor in batch and continuous modes of operation. In batch studies, maximum decolorization of 97% and detoxification of 96% occurred at a hydraulic retention time (HRT) of 6 h without any additional laccase requirement. In continuous studies, the reactor was operated at an HRT of 6 h with a lower enzyme dosage (~120 U/L of the effluent). Decolorization was accompanied by a loss in laccase activity which was restored to ~120 U/L by the addition of laccase in two regimes. The addition of laccase, when the residual laccase activity decreased to 40% (~50 U/L), resulted in high decolorization (~5 ppm residual dye concentration) and low variance (σ2) of 2.77, while laccase addition, when the residual dye concentration decreased to ~8% (~10 U/L), resulted in an average dye concentration of 13 ppm with a high variance of 62.08. The first regime was implemented, and the continuous reactor was operated for over 80 h at an HRT of 3 and 6 h, with the latter resulting in ~95% decolorization and 96% reduction in the mutagenicity of the effluent. Less than 10% membrane fouling was observed over long operations of the reactor. The findings strongly suggest the feasibility of using LCC1-62 in an enzyme membrane reactor for large-scale treatment of textile effluents.

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Section: Discussionmentioning

confidence: 99%

Detoxification and decolorization of complex textile effluent in an enzyme membrane reactor: batch and continuous studies

et al. 2023

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“…The authors of [15] tested a novel photoelectrocatalytic membrane (PECM) reactor as an option for the desalination, disinfection, and detoxification of biologically treated textile wastewater (BTTWW), with the aim of reusing it in hydroponic farming. The anionic ion exchange (IEX) process was used before PECM treatment to remove toxic residual dyes.…”

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confidence: 99%

Influence of Surface Forces on Membrane Separations

Филиппов

Selçuk

2022

Membranes

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Agricultural low-cost waste adsorption of methylene blue and modelling linear isotherm method versus nonlinear prediction

Yetgin,

Amlani

2024

Clean Techn Environ Policy

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This study shows that geographically marked wheat hull, named Siyez, rice hull Sarı Kılçık, and Taşköprü Garlic stalk were used as agricultural waste to potential adsorbent materials for removing methylene blue from aqueous solution. Experimental data were evaluated in both equilibrium batch process and kinetic studies. In addition, the factors that affect the adsorption capacities, such as pH solutions, methylene blue concentration, contact time, and temperatures, were also investigated. Obtained data were subject to two constant adsorption models of Langmuir, Freundlich, Temkin, and Dubinin−Radushkevich. The kinetic models (pseudo-first-order, pseudo-second-order, intra-particle diffusion and film diffusion) and thermodynamic parameters were evaluated. The adsorption isotherms, characterized by an excellent fit with the Langmuir model (R2 = 0.99) across all adsorbents, underscore the prevalence of monolayer adsorption of methylene blue, in contrast to the Freundlich equation. Adsorption kinetics of the methylene blue onto the adsorbents followed pseudo-second-order kinetic model. According to high regression coefficient (R2) and minimal values of nonlinear error functions like RMSE; the maximum monolayer adsorption capacities of wheat hull, rice hull and garlic stalk were found to be 62.50 (mg/g), 54.94 (mg/g), and 370.37 (mg/g), respectively. The results indicated that these proposed adsorbents could be low-cost and effective adsorbents for water purification and have adsorption capacity as much as comparable with the literature. In batch equilibrium studies, the adsorption of methylene blue dye onto the wheat hull, rice hull, and garlic stalk exhibited a significant correlation with temperature, contact time, and initial concentration of methylene blue dye and Adaptive Neuro-Fuzzy Inference System algorithm for forecasting overall the system parameter well fitted with these findings with the accuracy of outputs (R2 about 0.99 for each). Consequently, the thermodynamic analysis revealed that the adsorption process takes place in bulk diffusion by liquid phase mass transfer and occurred spontaneously with endothermically except garlic stalk. Adsorption thermodynamic studies show that the adsorption of methylene blue onto the garlic stalk was spontaneous and exothermic. Graphical Abstract

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Desalination and Detoxification of Textile Wastewater by Novel Photocatalytic Electrolysis Membrane Reactor for Ecosafe Hydroponic Farming

Cited by 7 publications

References 57 publications

Detoxification and decolorization of complex textile effluent in an enzyme membrane reactor: batch and continuous studies

Detoxification and decolorization of complex textile effluent in an enzyme membrane reactor: batch and continuous studies

Influence of Surface Forces on Membrane Separations

Agricultural low-cost waste adsorption of methylene blue and modelling linear isotherm method versus nonlinear prediction

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