Efficient removal of ammoniacal nitrogen from textile printing wastewater by electro-oxidation considering the effects of NaCl and NaOCl addition

Cifcioglu-Gozuacik, Bengisu; Ergenekon, Sinem Merve; Ozbey‐Unal, Bahar; Balcik, Cigdem; Karagündüz, Ahmet; Dizge, Nadir; Keskinler, Bülent

doi:10.2166/wst.2021.261

Cited by 9 publications

(8 citation statements)

References 38 publications

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“…The results of the ammonia reduction by the electrochemical reaction process with the configuration of Figure 1 also show better conditions than the electro-oxidation process by Bengisu et al, 2021 [16]. They achieved a 94% ammonia reduction with a processing time of 150 minutes at a higher salt content of 8000 mg/L or 4 times and there was the addition of 44.4…”

Section: Effect Of Hydraulic Retention Timementioning

confidence: 67%

“…Efficiency decreased up to 54% by salt content of 1000 mg/L as Figure 3 shows the electrochemical cell configuration as Figure 1, it is very visible than the Bengsu et al, 2021 [16]'s configuration because it is much more economical.…”

Section: Effect Of Salt Concentrationmentioning

confidence: 81%

“…The cell configuration and the electrode type used are most likely the cause of this difference. Based on the data in Figure 2 and Bengsu et al, 2021 [16] results can be proven that the Ti/RuO2 electrode is more effective than the carbon-based electrode in ammonia reduction.…”

Section: Effect Of Hydraulic Retention Timementioning

confidence: 82%

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Electrocatalytic Reaction as Efficient Removal Method for Ammonia Pollutant in Textile Wastewater

Mukimin

Djayanti

Setianingsih

et al. 2022

Preprint

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Textile wastewater has the potential to contain high ammonia, especially from the printing process. Nitrification-denitrification becomes the focus of treatment for this pollutant so comes the main source of the inability of the WWTP to meet the quality standards. An electrocatalytic reactor consisting of a cylindrical Ti/RuO2 anode and a copper pipe cathode (Cu) has been applied as new alternative technology. The reactor capacity is made of 1 liter with a fixed distance between the electrodes of 2 cm. Potential voltage, salt content, and hydraulic retention time are parameters for variable operation. The reactor had a high performance where ammonia concentration can be reduced by 70% for HRT of 15 minutes and 100% for 30 minutes. The ammonia removal is not only affected by processing time but also by the potential electrode and salt concentration. The removal was obtained at a complete level (100%) in operating conditions where the salt content of 2000 mg/L, a voltage of 7 volts, and an HRT of 30 minutes. The ammonia removal rate follows reaction order 1 with k of 0.1679 dan R2 of 0.9369. The pathway of nitrogen transforming ammonia directly to gas nitrogen was not through other forms (nitrate or nitrite). This method is a high-promise to improve the performance of the textile industry WWTP.

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Section: Effect Of Hydraulic Retention Timementioning

confidence: 67%

Section: Effect Of Salt Concentrationmentioning

confidence: 81%

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Electrocatalytic Reaction as Efficient Removal Method for Ammonia Pollutant in Textile Wastewater

Mukimin

Djayanti

Setianingsih

et al. 2022

Preprint

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“…High ammonia nitrogen in textile wastewater was reported due to nitrogen-based substances which commonly utilized. This should be a further concern since the excessive of these nutrients promote eutrophication and water quality problems [41].…”

Section: Removal Of Phosphorus and Ammonia-nitrogenmentioning

confidence: 99%

Application of myco-light expanded clay aggregate for real textile wastewater treatment in rotating drum biological contactor

Ardiati

Yanto

Anita

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Textile effluent could endanger human health and the water environment, but it is very challenging to be treated due to its complex composition. Biological methods for textile wastewater treatment by using fungi has been extensively studied in a lab-scale yet the investigation on a larger scale is still limited. In this study, a preliminary investigation of immobilized Trametes hirsuta D7 in light expanded clay aggregate (myco-LECA) application was conducted to treat the real textile wastewater in a rotating drum biological contactor. The undiluted wastewater without any addition of carbon and nutrients was used in the experiment and treated for 72 hours in the batch-mode bioreactor. The results revealed the maximum decolorization of 74.62% along with the highest laccase activity observed at 107 UL−1. Moreover, the pH was successfully reduced from 12.94 to 8.57 while the chemical oxygen demand still fluctuated. In terms of nutrients, 57.4% of phosphorus (PO4-P) removal was achieved but no observation of the nitrification process. Based on the toxicity assay using Artemia salina larvae, the treatment could reduce the toxicity level and performed a total chromium removal up to 36.5%. These findings showed the promising abilities of myco-LECA for textile wastewater treatment prior to the full-scale application.

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“…This is probably due to the indirect oxidation of ammonium into nitrogen gas by the hypochlorous and hypochlorite ions generated during the electrolysis, as shown in the reactions in Eqs. (20), and (21) as follows (46,47):…”

Section: Evolution Of Inorganic Ionsmentioning

confidence: 99%

Electrochemical Degradation of Synthetic Textile Wastewater by C/MnO2 Electrode Assessed by Surface Response Methodology

Doumbi

Noumi

Domga

2021

Avicenna J Environ Health Eng

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The current work investigated the optimization of synthetic textile wastewater (STW) containing methyl orange, crystal violet, and neutral red reactive dye degradation on manganese dioxide coated on graphite electrode using the Box-Behnken design (BBD). Carbon coated by manganese oxide (C/ MnO2 ) electrode was prepared by the sol-gel method. Graphite substrates were obtained from spent lithium-ion batteries for recycling and reducing the price of the electrode material in electrochemical processes. C/MnO2 was used as anode and cathode in an electrochemical cell during experiments. In addition, BBD was applied to design the experiments and find the optimal conditions for the degradation of STW. From the proposed model, the rate of the removal efficiency of chemical oxygen demand (COD) reached 83.63% with the optimum conditions (6.989 hours, concentration of 1.5 g/L NaCl, and current density of 50 mA/cm2 ). Based on the obtained optimum values, the specific energy consumption was around 30.359 kWh (kg COD)-1. Furthermore, the C/MnO2 electrode was characterized by Raman spectroscopy, and MnO2 films were prepared from the sol-gel process and deposited on graphite. Thus, using graphite coated with manganese dioxide, indirect anodic oxidation (IAO) can be efficient for the removal of the organic matter from the real textile dye bath.

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Efficient removal of ammoniacal nitrogen from textile printing wastewater by electro-oxidation considering the effects of NaCl and NaOCl addition

Cited by 9 publications

References 38 publications

Electrocatalytic Reaction as Efficient Removal Method for Ammonia Pollutant in Textile Wastewater

Electrocatalytic Reaction as Efficient Removal Method for Ammonia Pollutant in Textile Wastewater

Application of myco-light expanded clay aggregate for real textile wastewater treatment in rotating drum biological contactor

Electrochemical Degradation of Synthetic Textile Wastewater by C/MnO2 Electrode Assessed by Surface Response Methodology

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