Effect of process control on optimization of pulp and paper mill wastewater treatment by electrocoagulation

Camcıoğlu, Şule; Özyurt, Baran; Hapoğlu, Hale

doi:10.1016/j.psep.2017.07.014

Cited by 36 publications

(17 citation statements)

References 38 publications

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“…The parameters affecting the effectiveness of the EC process are operating conditions such as the current density, operating time, pH, conductivity, and electrode properties [22]. The bubble density affects system hydrodynamics, which determine the mass transfer between pollutants, coagulant, and gas microbubbles, and determines the collision rate of the coagulated particles resulting in flock formation [1].…”

Section: Operating Parametersmentioning

confidence: 99%

“…Among others, EC and EOx methods are the electrochemical technologies that researchers are most interested in regarding water and wastewater treatment [2,5,11]. EC is based on the principle that coagulant species including hydroxide precipitates are produced in situ by electrolytic oxidation of the sacrificial anodic material, which is dissolved as ions by electric current applied through metal electrodes such as aluminum and iron [1,22]. Thus, the EC method is more advantageous than the coagulation/flocculation method in which metal salts and polyelectrolytes are used as coagulants/flocculants in terms of sludge formation [23,24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Applications of Combined Electrocoagulation and Electrooxidation Treatment to Industrial Wastewaters

Özyurt¹,

Camcıoğlu²

2018

Wastewater and Water Quality

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In recent years, it is aimed to reuse wastewater to form an economical input and to manage it sustainably without threatening human life and ecosystem. High pollutant removal yield from wastewaters was achieved using electrocoagulation method without adding any chemical coagulant or flocculants, thus reducing the amount of sludge. However, electrocoagulation (EC) is an inefficient method for the removal of stable and dissolved organic pollutants. Electrooxidation (EOx), which was evaluated as one of the most promising technologies for the treatment of wastewater containing soluble organic compounds, can directly and indirectly oxidize small organic pollutants. Although electrooxidation provides full mineralization of the organic matter, if suspended solids are present, energy consumption is increased. Since EC is a fast but incomplete process and EOx is a complete but slow process, combining the two processes offers a practical hybrid. In this chapter, mechanisms and applications of EC, EOx, and their combinations will be widely discussed.

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Section: Operating Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Applications of Combined Electrocoagulation and Electrooxidation Treatment to Industrial Wastewaters

Özyurt¹,

Camcıoğlu²

2018

Wastewater and Water Quality

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“…Aluminum electrodes during the reaction process produce three reaction zones, the first zone produces Al 3+ ions at pH 1-3.5, other zones produce hydro complexes such as Al (OH)3, and Al (OH) 4at pH 4-10 [10]. The Aluminum electrode increase of 31.67% COD content and decreases energy 48.03% when compared to Fe electrodes [11]. In electro-oxidation, electrodes function as active surfaces in the oxidation process of organic matter [12].…”

Section: Introductionmentioning

confidence: 99%

Personal Care Wastewater Treatment With Electro-coagulation and Electro-oxidation

Ardhianto

Bagastyo

2019

E3S Web Conf.

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Personal care wastewater contains pharmaceuticals and personal care products (PPCPs). The compounds were in organic pollutants which have to be treated before water can be discharged. Electrochemical processes such as electro-coagulation and electro-oxidation were used to remove non-biodegradable in wastewater. Electro-coagulation as pretreatment using aluminum electrodes as anode and cathode. Electro-oxidation using Ti/Pt, and Ti/IrO2 as anode electrodes and variation of current 0,6 A, 0,7 A, 0,8 A and 1,0 A. Aluminum electrodes has effectiveness in removing COD, and TSS in electrocoagulation. Using aluminum electrodes remove COD, and TSS 76.1% (5.41 g) and 90.3% (6.10 g). Under initial pH, aluminum electrode does not cause a change in pH from initial pH (4.8-4.9). The removal efficiency of electrooxidation process using aluminum electrocoagulation effluent COD using Ti/Pt and Ti/IrO2 were 34,30% (1,55 g) and 39,71% (1,80 g). Increasing current when using Ti/IrO2 causes the COD removal rate to be more effective than using Ti/Pt. removal COD with 1.0 A gave the optimum COD removal were 34,30% (2,3 Ah/L; 1,55 g) with Ti/Pt, and 39,71% (2,3 Ah/L; 1,80 g) with Ti/IrO2 compared to 0,6 A (1,4 Ah/L), 0,7 A (1,6 Ah/L), and 0.8 A (1,9 Ah/L).

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“…In recent years, some of the researchers have found that electrocoagulation showed better removal efficiency in COD, color, turbidity and total dissolved solids [2,3] in dye laden wastewater discharged from textile industries. Electrocoagulation process provides a simple process for the treatment of wastewater without any need of supplementary chemicals, due to which no secondary pollution occurs.…”

Section: Introductionmentioning

confidence: 99%

Remediation of COD and color from textile wastewater using dual stage electrocoagulation process

Singh

Shukla

et al. 2019

SN Appl. Sci.

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The study has been done to investigate the effects of the current density on COD removal, color removal and electrode consumption on simulated textile wastewater using malachite green dye in the dual stage electrocoagulation process with settler. The results indicated that double stage electrocoagulation with settler is efficient at current density 165 A/m 2 and able to attain 92.60% COD removal and over 93.11% color removal. The most suitable current density for process is 135 A/m 2 in term of COD and color removal efficiency giving removal of 90.93 and 92.18%, respectively. analysis of variance (ANOVA) reveals that COD removal consistently changes for different COD concentrations among first and second stage electrocoagulation as well as settler. However, Tukey's test shows significant (P < 0.001) removal of COD. In case of color, ANOVA reveals significantly different color concentration among first and second stage electrocoagulation as well as settler. Moreover, Tukey's test also shows significant (P < 0.001) removal of color. In case of electrode consumption, t test revealed significant electrode consumption. Correlating the removal of COD concentration (mg/L) and electrode weight loss (mg) by Pearson correlation analysis for 1st reactor and 2nd reactor, it revealed a significant and positive correlation between COD removal and electrode weight loss (r = 0.98, P < 0.001) indicating that as removal in COD concentration increases, electrode weight loss increases.

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Effect of process control on optimization of pulp and paper mill wastewater treatment by electrocoagulation

Cited by 36 publications

References 38 publications

Applications of Combined Electrocoagulation and Electrooxidation Treatment to Industrial Wastewaters

Applications of Combined Electrocoagulation and Electrooxidation Treatment to Industrial Wastewaters

Personal Care Wastewater Treatment With Electro-coagulation and Electro-oxidation

Remediation of COD and color from textile wastewater using dual stage electrocoagulation process

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