Laboratory Experiments on the Electrochemical Remediation of Environment. Part 4: Color Removal of Simulated Wastewater by Electrocoagulation-Electroflotation

Singh, Mono M.; Szafran, Zvi; Ibáñez, Jorge G.

doi:10.1021/ed075p1040

Cited by 46 publications

(7 citation statements)

References 5 publications

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“…For example, my laboratory has previously published relatively simple chemistry experiments that show the applicability of two different AOPs to treat simulated wastewater . Similarly, others have published educational experiments on the degradation of polluting dyes in simulated wastewater using photocatalytic or electrochemical approaches. Another approach that has been used by various groups is the use of microbes for the degradation of dyes and organic pollutants .…”

Section: Introductionmentioning

confidence: 99%

Raising environmental awareness through applied biochemistry laboratory experiments

Ashraf

2013

Biochem Molecular Bio Educ

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Our environment is under constant pressure and threat from various sources of pollution. Science students, in particular chemistry students, must not only be made aware of these issues, but also be taught that chemistry (and science) can provide solutions to such real-life issues. To this end, a newly developed biochemistry laboratory experiment is described that guides students to learn about the applicability of peroxidase enzymes to degrade organic dyes (as model pollutants) in simulated waste water. In addition to showing how enzymes can potentially be used for waste water remediation, various factors than can affect enzyme-based reactions such as pH, temperature, concentration of substrates/enzymes, and denaturants can also be tested. This "applied biotechnology" experiment was successfully implemented in an undergraduate biochemistry laboratory course to enhance students' learning of environmental issues as well important biochemistry concepts. Student survey confirmed that this laboratory experiment was successful in achieving the objectives of raising environmental awareness in students and illustrating the usefulness of chemistry in solving real-life problems. This experiment can be easily adopted in an introductory biochemistry laboratory course and taught as an inquiryguided exercise.

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Section: Introductionmentioning

confidence: 99%

Raising environmental awareness through applied biochemistry laboratory experiments

Ashraf

2013

Biochem Molecular Bio Educ

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“…Once the insoluble iron hydroxides are produced, pollutants can be removed by the surface complexation or electrostatic attraction [25]. In this study of Fe electrodes, the formation of iron hydroxides was helpful to remove MB by the effect of coagulation.…”

Section: X-ray Diffraction Analysismentioning

confidence: 91%

Study on the removal of methylene blue by submerged Arc generated by titanium and iron electrodes

Mo,

Yu,

Chen

et al. 2024

Phys. Scr.

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Methylene blue (MB) solution was treated by the submerged arc generated by the titanium (Ti) and iron (Fe) electrodes with a subsequent aging process. The removal ratio of each condition was recorded by the absorbance of treated solution. The experimental results indicated that the submerged arc with Fe electrodes is more efficient with an efficiency nearly 90% after a 3.5 minutes of treating time. Reversible decolorization was observed in the MB solution treated by the Fe submerged arc. However, the removal ratio in the MB solution treated by the Ti submerged arc continuously increased in both treating and aging process. Furthermore, the particles eroded from the Ti electrodes were characterized by SEM and XRD, and titanic oxides including TiO, TiO2 and Ti3O5 were found with different diameters between 1-20 μm. Moreover, complete decomposition occurred during the treatment by the submerged arc generated by the Ti electrodes. The eroded particles from the Fe electrodes were examined by XRD and the majority of the composition of particles was iron. Unlike the Ti electrodes, the decolorization process by the submerged arc of Fe electrodes was more likely to be the formation of colorless leuco-MB and the physical adsorption by iron hydroxides. Moreover, the pH and chemical oxygen demand (COD) of the treated solutions were also discussed.

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“…Dye intermediates are bioresistant and refractory pollutants. Therefore, conventional biotreatment fails to remove these chemical compounds [37]. Therefore, the treatability experiments were conducted for all three industries selected from the Dye Intermediates sector by employing a laboratory scale set-up of Fenton's reagent (FE) and electrocoagulation (EC).…”

Section: Treatability Studies Of Effluent From the Dye Intermediates ...mentioning

confidence: 99%

Comparative studies for the treatment of industrial effluents employing advanced processes: towards enhancement of environmental performance

Shah

Ruparelia

2022

Discov Water

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The investigation was inspired by the declaration of critically polluted industrial zones in India. It was also reported that most of the Common Effluent Treatment Plants (CETPs) are non-compliant due to higher COD values in discharge than regulatory norms. Furthermore, most of the literature has not reported the efficacy of advanced wastewater technologies for real industrial effluent. Thus, this research focused on field trials of scalable advanced wastewater technologies in Vatva Industrial Estate (VIE), Ahmedabad. The potential of physico-chemical and advanced treatment processes are explored for applicability in industrial wastewater treatment. Thus, for this research, three industries from each sector, i.e., textile processing, dyes, and dye intermediates, a total of nine different industries were chosen. A sufficient volume of effluent was collected from each industry for detailed investigations. The initial COD loading observed was in the range of 68 to 7074, 30 to 896, and 100 to 1541 kg COD/day for textile processing, dyes, and dye intermediates, respectively, with significant variation in the qualitative profiles. The collected effluent was treated by electrocoagulation and Fenton's reagent in batch scale reactors. The batch scale reactors for both the technologies were of 1L size. The results of treatability studies represented that Fenton's reagent performed better than the electrocoagulation process for most of the industries selected in this study. This research provides insight for improvement in the environmental performance of the individual industries in general and CETPs in particular.

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Laboratory Experiments on the Electrochemical Remediation of Environment. Part 4: Color Removal of Simulated Wastewater by Electrocoagulation-Electroflotation

Cited by 46 publications

References 5 publications

Raising environmental awareness through applied biochemistry laboratory experiments

Raising environmental awareness through applied biochemistry laboratory experiments

Study on the removal of methylene blue by submerged Arc generated by titanium and iron electrodes

Comparative studies for the treatment of industrial effluents employing advanced processes: towards enhancement of environmental performance

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