Combined electrocoagulation and TiO2 photoassisted treatment applied to wastewater effluents from pharmaceutical and cosmetic industries

Boroski, Marcela; Rodrigues, Ângela Cláudia; Garcia, Jocilaine; Sampaio, Luiz C.; Nozaki, Jorge; Hioka, Noboru

doi:10.1016/j.jhazmat.2008.05.062

Cited by 195 publications

(89 citation statements)

References 29 publications

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“…Buna göre, atıksuyun kimyasal bileşimine göre değişmekle birlikte bazı atıksuların biyolojik arıtma ile yüksek verimle arıtılabildiği [13], Lak tablet üretimi atıksuyunda ise dirençli organikler yüzünden verimin %22'de kaldığı ve bu atıksuyun ozonlama ile %50 seviyesinde arıtılabildiği görülmektedir [14]. Biyolojik arıtmada yüksek verimler uzun sürelerde elde edilirken benzer verimler oksidasyon çalışmalarında dakikalar mertebesinde gerçekleşmiştir [15], [22], [23]. İleri oksidasyon ve biyolojik arıtmanın birlikte gerçekleştirildiği bütün çalışmalarda oksidasyon prosesinin BOİ/KOİ oranını artırarak biyolojik arıtılabilirliği yükselttiği vurgulanmıştır [5], [14], [22], [25].…”

Section: Sonuçların Literatür Ile Karşılaştırılmasıunclassified

Kinetic and thermodynamic evaluation of cod removal from pharmaceutical industry wastewater by Fenton oxidation

Argun¹

2017

Pamukkale J Eng Sci

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Section: Sonuçların Literatür Ile Karşılaştırılmasıunclassified

Kinetic and thermodynamic evaluation of cod removal from pharmaceutical industry wastewater by Fenton oxidation

Argun¹

2017

Pamukkale J Eng Sci

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“…These technologies include electrocatalysis [35,[136][137][138], sonocatalysis/Fenton process [139], biodegradation [140][141][142][143][144], and wetland technology [145]. The combination of NTO photocatalysis with any of these techniques can not only improve the total efficiency of the degradation but also has the advantage of treating large quantities of wastewater (in real systems), especially with electrocatalysis, biodegradation, and wetland technology.…”

Section: Coupling With Other Treatment Technologiesmentioning

confidence: 99%

“…The combination of NTO photocatalysis with any of these techniques can not only improve the total efficiency of the degradation but also has the advantage of treating large quantities of wastewater (in real systems), especially with electrocatalysis, biodegradation, and wetland technology. Electrocoagulation (using an iron cathode/anode (12.50 cm × 2.50 cm × 0.10 cm) at a current density of 763 Am −2 for 90 min) of an effluent from pharmaceutical and cosmetic companies removed the majority of the suspended particles, followed by further purification using NTO photocatalysis [35]. The effluent had an initial chemical oxygen demand (COD) value of 1753 mg L −1 , which was reduced to 160 mg L −1 and 50 mg L −1 after electrocoagulation and electrocoagulation/photocatalysis, respectively.…”

Section: Coupling With Other Treatment Technologiesmentioning

confidence: 99%

Photocatalytic Water Treatment by Titanium Dioxide: Recent Updates

Varghese²,

2012

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Photocatalytic water treatment using nanocrystalline titanium dioxide (NTO) is a well-known advanced oxidation process (AOP) for environmental remediation. With the in situ generation of electron-hole pairs upon irradiation with light, NTO can mineralize a wide range of organic compounds into harmless end products such as carbon dioxide, water, and inorganic ions. Photocatalytic degradation kinetics of pollutants by NTO is a topic of debate and the mostly reporting Langmuir-Hinshelwood kinetics must accompanied with proper experimental evidences. Different NTO morphologies or surface treatments on NTO can increase the photocatalytic efficiency in degradation reactions. Wisely designed photocatalytic reactors can decrease energy consumption or can avoid post-separation stages in photocatalytic water treatment processes. Doping NTO with metals or non-metals can reduce the band gap of the doped catalyst, enabling light absorption in the visible region. Coupling NTO photocatalysis with other water-treatment technologies can be more beneficial, especially in large-scale treatments. This review describes recent developments in the field of photocatalytic water treatment using NTO.

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“…Water is used in daily activities, which in turn increases the need for efficient wastewater treatment facilities. Due to rapid industrialization, a large quantity of polluted water is generated every year by different industries such as textile (Zheng et al 2012), leather (Natarajan et al 2013), pharmaceutical (Farhadi et al 2012;Boroski et al 2009), heavy metal (Al Aji et al 2012), cadmium removal (Bayar et al 2013;Yilmaz et al 2012), arsenic (Can et al 2012(Can et al , 2014, dairy processing (Idris et al 2012), paint (Singh et al 2015), petroleum (Zhou et al 2012), pulp and paper (Bengtsson et al 2008;Pokhrel and Viraraghavan 2004), distillery (Lucas et al 2009), fertilizer (Srivastava et al 1996), tannery (Houshyar et al 2012), landfill (Wu et al 2011), bakers yeast (Gengec et al 2012), food processing (Pocostales et al 2012), biodiesel (Ngamlerdpokin et al 2011) and olive packaging industries (García-García et al 2011;Kul et al 2015), Pistachio processing industry Fil et al 2014), etc. The pulp and paper industry is a large consumer of fresh water and an important source of wastewater (Ashrafi et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Sono assisted electrocoagulation process for the removal of pollutant from pulp and paper industry effluent

Asaithambi

Aziz

Sajjadi

et al. 2016

Environ Sci Pollut Res

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In the present work, the efficiency of the sonication, electrocoagulation, and sono-electrocoagulation process for removal of pollutants from the industrial effluent of the pulp and paper industry was compared. The experimental results showed that the sono-electrocoagulation process yielded higher pollutant removal percentage compared to the sonication and electrocoagulation process alone. The effect of the operating parameters in the sono-electrocoagulation process such as electrolyte concentration (1-5 g/L), current density (1-5 A/dm), effluent pH (3-11), COD concentration (1500-6000 mg/L), inter-electrode distance (1-3 cm), and electrode combination (Fe and Al) on the color removal, COD removal, and power consumption were studied. The maximum color and COD removal percentages of 100 and 95 %, respectively, were obtained at the current density of 4 A/dm, electrolyte concentration of 4 g/L, effluent pH of 7, COD concentration of 3000 mg/L, electrode combination of Fe/Fe, inter-electrode distance of 1 cm, and reaction time of 4 h, respectively. The color and COD removal percentages were analyzed by using an UV/Vis spectrophotometer and closed reflux method. The results showed that the sono-electrocoagulation process could be used as an efficient and environmental friendly technique for complete pollutant removal.

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Combined electrocoagulation and TiO2 photoassisted treatment applied to wastewater effluents from pharmaceutical and cosmetic industries

Cited by 195 publications

References 29 publications

Kinetic and thermodynamic evaluation of cod removal from pharmaceutical industry wastewater by Fenton oxidation

Kinetic and thermodynamic evaluation of cod removal from pharmaceutical industry wastewater by Fenton oxidation

Photocatalytic Water Treatment by Titanium Dioxide: Recent Updates

Sono assisted electrocoagulation process for the removal of pollutant from pulp and paper industry effluent

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