Electrochemical oxidation of humic acid at the antimony- and nickel-doped tin oxide electrode

Tang, Chengli; Yan, Wei; Zheng, Chunli

doi:10.1007/s11783-013-0545-9

Cited by 13 publications

(2 citation statements)

References 37 publications

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“…Meanwhile, Tang et al (2014) showed that adding calcium 20 mg/L reduced the treatment in HA 5 mg/L direct oxidation of electrode at high pH as it formed complexes with HA, which impeded the absorbance of HA on the surface of the electrode.…”

Section:  Calciummentioning

confidence: 99%

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Effect of operating conditions and ion contaminations on electro coagulation and oxidation processes for water quality improvement

Theng

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The objective of this study is to investigate the effect of ion contaminations and operating conditions on Electro Coagulation (EC) and Oxidation (EO) in turbidity and natural organic matter (NOM) removal. The experiments were conducted in 4 liters column. Ferrous and calcium were chosen as contaminated ions. The operating condition was varied in terms of initial pH and current density. 100 NTU turbidity and 70 mg/L NOM were synthesized from bentonite and humic acid (HA), respectively. The results showed that bipolar arrangement of electrodes with 2 cm gap was the optimal condition in terms of gas flow rate and electrode corrosive ratio (Qg/Loss) as well as the treatment performance. From kinetic study, turbidity was removed through destabilization mechanism while HA was removed faster by physical attractive force and sweep floc mechanism. The optimal operation time was found at 20 minutes. It was then selected for analyzing the effect of co-ions and operating conditions. Based on the result, calcium, ferrous, and initial pH were significant effect on turbidity removal while current density, initial pH, and ferrous were significant effect on HA removal. The optimal condition on turbidity removal was found at ferrous 1 mg/L, calcium 18 mg/L, initial pH 8, and current density 3.4 mA/cm2. HA was obtained at ferrous 25 mg/L, calcium 8 mg/L, initial pH 5, and current density 4 mA/cm2. The effluent of the worst condition of HA was then taken place for EO process. Aluminum cathode and conductive carbon coated onto graphite anode were the best condition for EO electrode material. The optimal condition was found at current density 5.5 mA/cm2 and operating time 20 minutes in monopolar arrangement for EO process to remove 37 mg/L HA.

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Section:  Calciummentioning

confidence: 99%

“…The results showed that the electrolysis efficiency is depended on the composition of electrode material. Ti/Ru0.3Ti0.7O2 electrode presents the best performance considering the elimination of most of the electro-oxidation products Tang et al (2014). improved the HA removal by preparing Ni-Sb-SnO2/Ti oxide electrodes.…”

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confidence: 99%

Effect of operating conditions and ion contaminations on electro coagulation and oxidation processes for water quality improvement

Theng

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Characterization of electrode fouling during electrochemical oxidation of phenolic pollutant

You

et al. 2020

Front. Environ. Sci. Eng.

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Electrocatalytic degradation of aspen lignin over Pb/PbO2 electrode in alkali solution

Wang

Yang

Liu

et al. 2015

Catalysis Communications

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Electrochemical oxidation of humic acid at the antimony- and nickel-doped tin oxide electrode

Cited by 13 publications

References 37 publications

Effect of operating conditions and ion contaminations on electro coagulation and oxidation processes for water quality improvement

Effect of operating conditions and ion contaminations on electro coagulation and oxidation processes for water quality improvement

Characterization of electrode fouling during electrochemical oxidation of phenolic pollutant

Electrocatalytic degradation of aspen lignin over Pb/PbO2 electrode in alkali solution

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