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

Mozia, Sylwia; Morawski, Antoni W.; Toyoda, Masahiro; Tsumura, Tomoki

doi:10.1016/j.cej.2008.12.012

Cited by 67 publications

(35 citation statements)

References 49 publications

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“…Recently, a new type of PMR that combines photocatalysis with hydrophobic membrane distillation (MD) has been reported [8,[12][13][14][15][16][17]. Since the MD is a thermally driven process, only volatile components in the feed can pass through the pores of the hydrophobic membrane to the permeate side.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

“…Mozia et al developed a photocatalytic membrane distillation reactor (PMDR) for azo dye degradation, which combined hybrid photocatalysis with direct contact membrane distillation (DCMD) [8,[12][13][14][15][16][17]. Low-pressure mercury vapor UV lamps were positioned above the feed tank in which photocatalytic degradation took place.…”

Section: Introductionmentioning

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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“…The use of PMRs shortened the process route for catalyst recovery, reduced the size of installation, and also enabled the continuous production with low energy consumption (Mozia, 2010). In this regard, PMRs were considered to be a promising technology in natural organic matter (Choo et al, 2008), pharmaceuticals and endocrine disrupting compounds removal (Benotti et al, 2009), municipal wastewater (Mozia et al, 2014), and dye wastewater treatment (Mozia et al, , 2009. Mozia et al (Mozia et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A hybrid process combining homogeneous catalytic ozonation and membrane distillation for wastewater treatment

Zhang

Zhao

et al. 2016

Chemosphere

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h i g h l i g h t s g r a p h i c a l a b s t r a c tFor the first time, homogeneous catalytic ozonation and membrane distillation were coupled in a membrane reactor. Organics and salts were efficiently removed and the homogenous catalyst was almost 100% recovered simultaneously. Membrane fouling was effectively mitigated compared to MD process.a r t i c l e i n f o b s t r a c tA novel catalytic ozonation membrane reactor (COMR) coupling homogeneous catalytic ozonation and direct contact membrane distillation (DCMD) was developed for refractory saline organic pollutant treatment from wastewater. An ozonation process took place in the reactor to degrade organic pollutants, whilst the DCMD process was used to recover ionic catalysts and produce clean water. It was found that 98.6% total organic carbon (TOC) and almost 100% salt were removed and almost 100% metal ion catalyst was recovered. TOC in the permeate water was less than 16 mg/L after 5 h operation, which was considered satisfactory as the TOC in the potassium hydrogen phthalate (KHP) feed water was as high as 1000 mg/L. Meanwhile, the membrane distillation flux in the COMR process was 49.8% higher than that in DCMD process alone after 60 h operation. Further, scanning electron microscope images showed less amount and smaller size of contaminants on the membrane surface, which indicated the mitigation of membrane fouling. The tensile strength and FT-IR spectra tests did not reveal obvious changes for the polyvinylidene fluoride membrane after 60 h operation, which indicated the good durability. This novel COMR hybrid process exhibited promising application prospects for saline organic wastewater treatment.

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“…A second way to work with photocatalytic membrane reactor is to separate the reaction system and the membrane separation Gallucci, F., Basile, A. and Hai, F 33 system (ultafiltration, or other) in two different steps ( Figure 22). This scheme has been used for example by Mozia (2008Mozia ( , 2009), Molinari (2009) and Azrague (2005).…”

Section: Photo-catalytic Membrane Reactorsmentioning

confidence: 99%

“…Typical applications of photocatalytic membrane reactors are the photo-degradation of water pollutants (Mozia 2009), Photo-reaction to obtain more valuable products (Molinari 2009) and photo-oxidation of pollutant vapor compounds (Tsuru 2006b). …”

Section: Photo-catalytic Membrane Reactorsmentioning

confidence: 99%

Introduction – A Review of Membrane Reactors

Gallucci

Basile

Hai

2011

Membranes for Membrane Reactors

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

Cited by 67 publications

References 49 publications

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

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

A hybrid process combining homogeneous catalytic ozonation and membrane distillation for wastewater treatment

Introduction – A Review of Membrane Reactors

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