Batch and Continuous Photocatalytic Degradation of Benzenesulfonic Acid Using Concentrated Solar Radiation

Kamble, Sanjay P.; Sawant, S.B.; Pangarkar, Vishwas G.

doi:10.1021/ie030493r

Cited by 63 publications

(52 citation statements)

References 32 publications

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“…An increased loading of catalyst increases the quantity of photons adsorbed and consequently the degradation rates (Herrmann 1995;. On the other hand, an increase in the catalyst loading increases the solution opacity and leads to a decrease in the penetration of the photon flux in the reactor and thereby decreases the photocatalytic degradation rate (Kamble et al 2003;Gogate and Pandit 2004). Moreover, a loss in surface area by agglomeration (particle-particle interactions) at high solid concentration is also observed (Kaneco et al 2004).…”

Section: Effect Of Photocatalyst Concentrationmentioning

confidence: 99%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

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Traditional chemical, physical and biological processes for treating wastewater containing textile dye have such disadvantages as high cost, high energy requirement and generation of secondary pollution during treatment process. The advanced oxidation processes technology has been attracting growing attention for the decomposition of organic dyes. Such processes are based on the light-enhanced generation of highly reactive hydroxyl radicals, which oxidize the organic matter in solution and convert it completely into water, CO 2 and inorganic compounds. In this presentation, the photocatalytic degradation of dyes in aqueous solution using TiO 2 as photocatalyst under solar and UV irradiation has been reviewed. It is observed that the degradation of dyes depends on several parameters such as pH, catalyst concentration, substrate concentration and the presence of oxidants. Reaction temperature and the intensity of light also affect the degradation of dyes. Particle size, BETsurface area and different mineral forms of TiO 2 also have influence on the degradation rate.

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Section: Effect Of Photocatalyst Concentrationmentioning

confidence: 99%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

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“…The maximum reaction rate of RB5 was observed at a TiO 2 dose of 2.0 g/L, while further increasing the TiO 2 dose (i.e., 4.0 and 6.0 g/L) led to a decrease in the reaction rate. That was because a high TiO 2 dose would decrease the solution transmittance to UV light and thus reduce the photocatalytic reaction rate [24]; and moreover, the TiO 2 particles would agglomerate and thus lose partially the available photocatalytic surface area [25].…”

Section: Effect Of Tio 2 Dose On Photodegradation Efficiency and Permmentioning

confidence: 99%

Degradation of Reactive Black 5 in a submerged photocatalytic membrane distillation reactor with microwave electrodeless lamps as light source

Qiang

Xiao

et al. 2014

Separation and Purification Technology

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a b s t r a c tA novel submerged photocatalytic membrane distillation reactor (SPMDR) was developed and microwave electrodeless lamps were applied as the source light. Reactive Black 5 was used as a model dye with an initial concentration of 400 mg/L. The effects of TiO 2 dose and feed temperature on the photodegradation efficiency and permeate flux were first investigated. The highest degradation rate was observed at 2.0 g/L TiO 2 and 65°C. The permeate flux decreased by 15.8% when the TiO 2 dose increased from 0.5 to 6.0 g/L. The permeate flux of the SPMDR in the presence of 2.0 g/L TiO 2 was higher than the pure water flux using conventional heating, which confirms the enhancement of microwave irradiation to the membrane distillation mass transfer. The SPMDR achieved a high color (100%) and TOC (80.1%) removal efficiency after 300 min reaction. The byproducts identified in the feed included aliphatic acids (formic, acetic and maleic) and inorganic ions (SO 2À 4 , NH þ 4 and NO À 3 ). The SPMDR produced high quality water because dye, TiO 2 and inorganic ions were completely retained in the feed side. Formic and acetic acids were detected in the permeate side with amounts of 0.08 and 0.25 mg (i.e., 1.83 and 5.29 mg/L), respectively. Scanning electron microscope (SEM) images showed that a loose TiO 2 cake layer was formed on the membrane surface, which decreased the membrane porosity and contact angle to some extent. However, the module efficiency, porosity and contact angle could be largely recovered after 30 min of washing with distilled water.

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“…It is generally known that when the catalyst loading is increased, there is an increase in the surface area of the catalyst available for adsorption and degradation. On the other hand, an increase in the catalyst loading increases the solution opacity leading to a decrease in the penetration of the photon flux in the reactor and thereby decreasing the photocatalytic degradation rate [42]. Moreover, the loss in surface area by agglomeration (particle-particle interactions) at high solid concentration is observed [43].…”

Section: Effect Of Photocatalyst Loading On Photodegradation Rate Of mentioning

confidence: 99%

Effect of process parameters on photodegradation of Acid Yellow 36 in a hybrid photocatalysis–membrane distillation system

Mozia

Morawski

Toyoda

et al. 2009

Chemical Engineering Journal

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Batch and Continuous Photocatalytic Degradation of Benzenesulfonic Acid Using Concentrated Solar Radiation

Cited by 63 publications

References 32 publications

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Degradation of Reactive Black 5 in a submerged photocatalytic membrane distillation reactor with microwave electrodeless lamps as light source

Effect of process parameters on photodegradation of Acid Yellow 36 in a hybrid photocatalysis–membrane distillation system

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