Study on highly efficient Cr(VI) removal from wastewater by sinusoidal alternating current coagulation

Xu, Tao; Zhou, Yue; Lei, Xiping; Hu, Bonian; Hong, Chen; Yu, Gang

doi:10.1016/j.jenvman.2019.109322

Cited by 51 publications

(8 citation statements)

References 31 publications

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“…S1, ESI†). First, floc-20-r was monitored and the peaks were in good agreement with the reported values of iron oxyhydroxide, 38,39 which was obtained from the hydration and complexation of the in situ coagulant species Fe 2+ and OH–. The diffraction peak of floc-20 is consistent with floc-20-r, the reference sample, showing no diffraction peak of MG dye, which indicated that MG dye molecules were mainly adsorbed on floc.…”

Section: Resultssupporting

confidence: 80%

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Luo

Tan

et al. 2022

New J. Chem.

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Section: Resultssupporting

confidence: 80%

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Luo

Tan

et al. 2022

New J. Chem.

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“…Therefore, we also studied the effect of PDC with different current waveforms on the removal efficiency of OFL. As shown in Figure S2a, PDC exhibits a higher removal efficiency than that of CDC, which is consistent with previous reports. , Furthermore, the removal efficiency of OFL by using FW-PDC is significantly higher than that of in IW-PDC conditions. The UV–visible absorption spectra of OFL removal at different energy consumed under FW-PDC conditions are shown in Figure S2b.…”

Section: Resultsmentioning

confidence: 99%

Improved Degradation Efficiency of Levofloxacin by a Self-Powered Electrochemical System with Pulsed Direct-Current

et al. 2021

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With the excellent structural design, rotary triboelectric nanogenerator (R-TENG) is suitable for harvesting mechanical energy such as wind energy and water energy to build a self-powered electrochemical system for environmental science. The electrochemical performance has been greatly improved by using the pulsed direct-current (PDC) output of a TENG; however, a full-wave PDC (FW-PDC) is hardly realized in R-TENG devices due to existence of phase superposition. Here, a R-TENG with FW-PDC output is reported to perform a self-powered electro-Fenton system for enhancing the removal efficiency of levofloxacin (OFL). By adjusting the rotation center angle ratio between each rotator and stator unit, the phase superposition of R-TENG caused by multiple parallel electrodes can be effectively eliminated, thus achieving the desired FW-PDC output. Because of the reduced electrode passivation effect, the removal efficiency of OFL is improved by 30% under equal electric charges through using the designed R-TENG with FW-PDC output compared to traditional R-TENG. This study provides a promising methodology to improve the performance of self-powered electrochemical process for treating environment pollutions.

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“… [ 38 ] Iron electrode Chromium(IV) Sinusoidal alternating current reduces energy consumption and enhances removal efficiency. 99.73% and the residual Cr(VI) in the effluent was <0.1 mgdm −3 [ 39 ] Chemical precipitation Cu-EDTAdecomplexation Copper Cu ions were precipitated as Cu 2 (OH) 2 CO 3 , CuCO 3 , Cu(OH) 2 , and CuO. 68.30% Low investment.…”

Section: Biofiltration Techniques Vs Conventional Techniques In the R...mentioning

confidence: 99%

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

et al. 2022

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Good quality of water determines the healthy life of living beings on this earth. The cleanliness of water was interrupted by the pollutants emerging out of several human activities. Industrialization, urbanization, heavy population, and improper disposal of wastes are found to be the major reasons for the contamination of water. Globally, the inclusion of volatile organic compounds (VOCs) and heavy metals released by manufacturing industries, pharmaceuticals, and petrochemical processes have created environmental issues. The toxic nature of these pollutants has led researchers, scientists, and industries to exhibit concern toward the complete eradication of them. In this scenario, the development of wastewater treatment methodologies at low cost and in an eco-friendly way had gained importance at the international level. Recently, bio-based technologies were considered for environmental remedies. Biofiltration-based works have shown a significant result for the removal of volatile organic compounds and heavy metals in the treatment of wastewater. This was done with several biological sources such as bacteria, fungi, algae, plants, yeasts, etc. The biofiltration technique is cost-effective, simple, biocompatible, sustainable, and eco-friendly compared to conventional techniques. This review article provides deep insight into biofiltration technologies engaged in the removal of volatile organic compounds and heavy metals in the wastewater treatment process.

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Study on highly efficient Cr(VI) removal from wastewater by sinusoidal alternating current coagulation

Cited by 51 publications

References 31 publications

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Improved Degradation Efficiency of Levofloxacin by a Self-Powered Electrochemical System with Pulsed Direct-Current

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

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Study on highly efficient Cr(VI) removal from wastewater by sinusoidal alternating current coagulation

Cited by 51 publications

References 31 publications

Fe3O4@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe3O4@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Improved Degradation Efficiency of Levofloxacin by a Self-Powered Electrochemical System with Pulsed Direct-Current

A review on biofiltration techniques: recent advancements in the removal of volatile organic compounds and heavy metals in the treatment of polluted water

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Product

Resources

About

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue