The application of titanium dioxide for deactivation of bioparticulates: An overview

Markowska‐Szczupak, Agata; Ulfig, Krzysztof; Morawski, Antoni W.

doi:10.1016/j.cattod.2010.11.055

Cited by 247 publications

(151 citation statements)

References 155 publications

Supporting

Mentioning

146

Contrasting

Unclassified

Order By: Relevance

“…Such an approach was associated with the results obtained in the laboratory, which unambiguously indicated that the effect of co-precipitation increases the reduction of COD, BOD 5 , total nitrogen (TN) and ammonia nitrogen (AN), and the use of hydrogen peroxide leads to an increase in the elimination of formaldehyde (HCHO) that is also present in the tested effluents. In practice, a combination of these two operations also resulted in a significant reduction in wastewater total toxicity due to a blockage or sorption of biocidal components, the function of which was fulfilled by TiO 2 in case of the investigated wastewaters [10,34]. The developed technical solution (presented as a simplified diagram in Figure 1) was tested in a plant producing a wide range of paints to coat wooden surfaces.…”

Section: Resultsmentioning

confidence: 99%

Research on physico-chemical pretreatment of wastewater from the production of wood coating materials

Żak

Rauckyte-Żak

Laurinavičius

et al. 2014

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

This paper presents the results of the research conducted on the installation designed for physico-chemical pretreatment of technological wastewater in the volume of up to 5.0 m 3 /day discharged from the production of protective and decorative coating materials used for wooden surfaces. The subject-matter installation constructed on a mobile pallet, consisted of a storage-averaging tank where concentrations were equalised with the use of circulation aeration and mixing. A variant, preliminary pre-oxidation with the use of hydrogen peroxide was conducted in this tank. A substantial installation set for the wastewater treatment plant consisted of two preliminary tube reactors, one cylindrical-conical processing reactor, stations for preparing and dispensing reagents and the sediment dewatering station. Considerable reductions in main chemical indicators of water pollution were obtained in the installation: both total suspended solids (TSS) and ether extract (EE) -more than 98%, chemical oxygen demand (COD) -46-54%, biochemical oxygen demand (BOD5) -39-46%, and free formaldehyde (HCHO) -14-27% due to the use of pre-oxidation and the acid -alkaine double coagulation by applying the ALCAT 105 -SAX 25 system. The use of pre-oxidation with hydrogen peroxide in doses 250.0-450.0 mg/l and then two-stage coagulation resulted in an increase in the reduction of: COD and BOD5 by ca 10-15%, and HCHO by ca 58-66% with reference to the water pretreatment without pre-oxidation. The assessment of sediments formed during the process of pretreatment was made determining the leachable forms of metals (Cu, Ni and Ti) according to methodology of TCLP in compliance with the US EPA Method 1311.

show abstract

Section: Resultsmentioning

confidence: 99%

Research on physico-chemical pretreatment of wastewater from the production of wood coating materials

Żak

Rauckyte-Żak

Laurinavičius

et al. 2014

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

“…Recently, we have reported the mechanism of the damage induced by TiO 2 photocatalysis on the bilayer cell-envelope of Escherichia coli in several studies [20][21][22][23]. Other groups working in the disinfection field have also addressed the mechanism of disinfection [24][25][26][27]. The E. coli and MRSA viability as a function of time was monitored by direct transfer on plate and by stereomicroscopy.…”

Section: Introductionmentioning

confidence: 99%

ZrNO–Ag co-sputtered surfaces leading to E. coli inactivation under actinic light: Evidence for the oligodynamic effect

Rtimi

Pascu

Sanjinés

et al. 2013

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

a b s t r a c tThis study reports visible light sensitive ZrNO and ZrNO-Ag polyester samples prepared by sputtering in an Ar/N 2 /O 2 atmosphere leading to Escherichia coli bacterial inactivation. The bacterial inactivation by ZrNO avoids the increasing environmental concern involving the fate of Ag-leaching of many disinfectants. The simultaneous co-sputtering of ZrNO and Ag 2 O enhanced the E. coli bacterial inactivation kinetics compared to the sequential sputtering of ZrNO and Ag. A reaction mechanism is suggested triggered by photoinduced interfacial charge transfer (IFCT) suggesting electron injection form the Ag 2 O cb to the ZrO 2cb . The sizes of the ZrO 2 and Ag nanoparticles in the co-sputtered ZrNO-Ag were 80-130 nm and 8-15 nm respectively as determined by high angular annular dark field (HAADF) microscopy. Evidence is presented by X-ray photoelectron spectroscopy (XPS) for the self-cleaning of the photocatalysts after bacterial inactivation. This enabled a stable catalyst reuse. The XPS experimental spectra of ZrNO and ZrNO-Ag were deconvoluted into their ZrN, ZrNO and ZrO 2 components. The amounts of Ag-ions released during bacterial inactivation were < 5 ppb/cm 2 and well below the Ag cytotoxic levels. Since no cytotoxicity was introduced during the bacterial inactivation process, the ZrNO-Ag disinfection proceeds through an oligodynamic effect.

show abstract

“…The TiO 2 absorbs energy from the ultraviolet (UV) region and forms reactive oxygen species such as the OH -radicals, which cause inactivation by oxidation or deterioration in the cell wall of microorganisms, thus inhibiting cell breathing and, consequently, leading to mortality (Markowska-Szczupak et al, 2011;Foster et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Resistance of TiO2-treated Eucalyptus botryoides Wood to the Fungus Ganoderma applanatum

et al. 2018

View full text Add to dashboard Cite

The aim of the present study is to investigate the resistance of Eucalyptus botryoides treated with TiO 2 particles to attack by the fungus Ganoderma applanatum. The Bethel treatment method was applied to wood specimens (25 × 25 × 9 mm) and compared to CCB. The wood was subjected to the accelerated decay test and characterized through Rockwell Hardness and Fourier Transform Infrared Spectroscopy (FT-IR). The TiO 2 -treated wood showed lower degradation and greater resistance to the penetration of a steel sphere (Rockwell Hardness) than the untreated wood. In addition, the results of the TiO 2 treatment were statistically equal to those of CCB. The FT-IR analysis showed that the fungus degraded lignin and hemicellulose in untreated samples. The present results showed the TiO 2 efficiency in forming a protective layer on the cell wall and in preventing the development of microorganisms, a fact that verifies its fungicidal action on wood.

show abstract

The application of titanium dioxide for deactivation of bioparticulates: An overview

Cited by 247 publications

References 155 publications

Research on physico-chemical pretreatment of wastewater from the production of wood coating materials

Research on physico-chemical pretreatment of wastewater from the production of wood coating materials

ZrNO–Ag co-sputtered surfaces leading to E. coli inactivation under actinic light: Evidence for the oligodynamic effect

Resistance of TiO2-treated Eucalyptus botryoides Wood to the Fungus Ganoderma applanatum

Contact Info

Product

Resources

About