Utilization of prawn to reduce the value of BOD and COD of textile wastewater.

Sela, Salma Katun; Hossain, A.K.M. Nayab-Ul; Hussain, Syed Zubair; Hasan, Naimul

doi:10.1016/j.clet.2020.100021

Cited by 21 publications

(12 citation statements)

References 12 publications

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“…In addition, dyes are known to have mutagenic and carcinogenic properties that can harm the surrounding biota. Dyes are also known to increase the levels of chemical oxygen demand (COD) compounds which can dramatically reduce dissolved oxygen levels in water [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

TiO2/guar gum hydrogel composite for adsorption and photodegradation of methylene blue

Santoso

Angkawijaya

Bundjaja

et al. 2021

International Journal of Biological Macromolecules

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Section: Introductionmentioning

confidence: 99%

TiO2/guar gum hydrogel composite for adsorption and photodegradation of methylene blue

Santoso

Angkawijaya

Bundjaja

et al. 2021

International Journal of Biological Macromolecules

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“…About half of the global produced dyes is used in the textile industry (Ozturk & Cinperi, 2018; Patil, 2018). Usually, textile wastewater treatment is based on combined processes of chemical (Sela et al, 2020) and biological (Ozturk & Cinperi, 2018) systems to attain acceptable ranges of COD and color concentrations. Direct discharging of the treated textile wastewater to the natural water bodies may cause serious damage to the environment because of its high salinity (Mondal et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Water recovery from yarn fabric dyeing wastewater using electrochemical oxidation and membrane processes

Bouchareb¹,

Bilici

Dizge

2022

Water Environment Research

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This study intended to evaluate and compare the efficiency of electrochemical oxidation (EO), nanofiltration (NF), and reverse osmosis (RO) membranes processes in the treatment of yarn fabric dyeing wastewater (YFDW) in terms of chemical oxygen demand (COD) removal, color removal, salinity reduction, and conductivity removal. EO tests of the textile effluent were conducted under various current densities and solution pH conditions employing a graphite electrode. Membrane filtration experiments were conducted using two different NF membranes: NP010 and NP030 and two distinct RO membranes: BW30 and SW30 flat-sheet membranes. The experimental results showed that NF membrane process is not suitable for yarn fabric wastewater treatment showing low removal efficiencies for COD, color, and conductivity. However, both EO and RO membranes could reduce COD and color to high removal performances. EO results showed more than 99% of color removal and 80% of COD elimination at pH = 6 and current density of 50 mA/cm 2 after 180 min of reaction. Using RO membrane for yarn fabric wastewater treatment demonstrated relatively complete removal of color concentration and 98% of COD elimination. However, EO process showed less performance in conductivity removal efficiency compared to the RO membranes. EO treatment of YFDW decreased conductivity by 31.2%, whereas RO membrane process reduced conductivity to a greater extent and recorded 97.1% of removal elimination percentage. Therefore, the treated water by RO membrane could be recycled back to the process such as washing and dyeing, in that way offering economic profits by decreasing water consumption and wastewater treatment cost. Practitioner Points• Electrochemical oxidation and membrane filtration processes were combined for the treatment of yarn fabric dyeing wastewater (YFDW).• A 100% color removal of color and 98.5% COD elimination efficiencies were obtained for the electrochemical oxidation (EO) + RO combined process.• EO treatment of YFDW decreased conductivity by 32.7%, whereas the RO membrane process reduced conductivity to a greater extent and recorded 97.7% of removal elimination percentage.

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“…Azo dyes are applied in dyeing processes due to their high activity; reports indicate that 50–70% of the total dye quantity employed in textile, plastic, and paper industries can involve these dyes . Some of these compounds are hardly biodegradable, in addition to the fact that traditional treatments cannot break down recalcitrant dyes. , In an aquatic environment, these compounds can settle on the entire surface of the water body and adsorb much of the sunlight, preventing photosynthetic organisms from accessing the energy they need, therefore decreasing the productivity of photosynthetic species, the concentration of dissolved oxygen and, in turn, increasing both the chemical oxygen demand (COD) and the biochemical oxygen demand (BOD). , Furthermore, the production of toxic intermediates resulting from the decomposition of dyes by environmental factors affects the variability of species in flora and fauna. , Methylene blue (MB) is an organic cationic dye characterized by its intense bluish color, with applications in the textile, biological, chemical, and medical industries . MB is a tricyclic phenothiazine, soluble in water .…”

Section: Introductionmentioning

confidence: 99%

“… 5 , 6 In an aquatic environment, these compounds can settle on the entire surface of the water body and adsorb much of the sunlight, preventing photosynthetic organisms from accessing the energy they need, therefore decreasing the productivity of photosynthetic species, the concentration of dissolved oxygen and, in turn, increasing both the chemical oxygen demand (COD) and the biochemical oxygen demand (BOD). 7 , 8 Furthermore, the production of toxic intermediates resulting from the decomposition of dyes by environmental factors affects the variability of species in flora and fauna. 9 , 10 Methylene blue (MB) is an organic cationic dye characterized by its intense bluish color, with applications in the textile, biological, chemical, and medical industries.…”

Section: Introductionmentioning

confidence: 99%

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

et al. 2022

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In this work, we studied the methylene blue (MB) dye adsorption capacity on biochar derived from residues of Prosopis juliflora seed waste, a species found in the region of the tropical dry forest of Piojó in the Department of Atlántico, Colombia. The materials were obtained by pyrolysis at temperatures of 300, 500, and 700 °C. Biochar was characterized using Fourier transform infrared (FTIR), scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDX), TGA, and Brunauer–Emmett–Teller (BET) techniques. The three biochar samples presented a macroporous, rough structure with pore size between 6 and 28 μm. The largest pore surface area observed was 1.28 m 2 /g for pyrolyzed biochar produced at 500 °C, larger than that of biochar produced at 700 °C, which was 0.83 m 2 /g. The adsorption results show that the maximum percentage of MB removal was 69%. According to SEM results, the material’s pore sizes varied on average from 6 to 28 μm. We modeled MB adsorption on biomass through three different isotherm models. The Freundlich model was the best-fitting model for the removal of MB ( K F = 1.447; 1/ n = 0.352). The kinetic results showed that the pseudo-second-order model was the best-fitting model for the sorption process ( q e = 2.94 mg/g; k 2 = 0.087 g/(mg/min –1 )). Furthermore, the recycling test showed that the biochar did not change its adsorption capacity significantly. Finally, under the experimental conditions, the thermodynamic parameters indicated that the removal of MB using biochar was an endothermic and spontaneous process; all Δ G ° values ranged from −2.14 to −0.95 kJ/mol; Δ H ° was 23.54 kJ/mol and Δ S ° was 79.5 J/mol.

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Utilization of prawn to reduce the value of BOD and COD of textile wastewater.

Cited by 21 publications

References 12 publications

TiO2/guar gum hydrogel composite for adsorption and photodegradation of methylene blue

TiO2/guar gum hydrogel composite for adsorption and photodegradation of methylene blue

Water recovery from yarn fabric dyeing wastewater using electrochemical oxidation and membrane processes

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

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