Photodegradation of oxytetracycline in aqueous by 5A and 13X loaded with TiO2 under UV irradiation

Zhao, Chun; Deng, Huiping; Li, Yuan; Liu, Zhenzhong

doi:10.1016/j.jhazmat.2009.11.119

Cited by 120 publications

(39 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A variety of treatment methods has been established for the removal of antibiotics and heavy metals from water (Farooq et al, 2002;Le-Minh et al, 2010;Lopez et al, 2003;Zazouli et al, 2009;Zhao et al, 2010). Among these methods, adsorption remains attractive because of its advantages of easy operation, energy savings and high removal capacity.…”

Section: Introductionmentioning

confidence: 99%

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

et al. 2015

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

et al. 2015

View full text Add to dashboard Cite

“…• In this process there were no toxic byproducts but in photolysis (Shaojun 2008), Ozonation (Li 2008 andUslu 2009) and UV/TiO 2 (Zhao 2010), the byproducts were toxic. The biological treatments for OTC removing were not very successful, because of the toxicity of OTC for microorganism and low yield of removing by them (Huang 2011a andArikan 2006).…”

Section: P5mentioning

confidence: 93%

“…In 5 to 30 minutes of ozonation, the products were much more toxic than the initial material (Li 2008). The concentration of 1000 mg/L OTC in the photocatalytic process of TiO 2 /UV at pH =7 after 210 min, 88% have been removed (Zhao 2010). In Fenton process, Iron and Hydrogen peroxide in a ratio of 1 to 10, after 120 min 70% of OTC with 100 mg/L initial concentration was removed (Uslu 2009).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Focus on kineticcs of removal antibiotics wastewater by nano-zero valent iron in oxidation and photoxidation process

et al. 2017

View full text Add to dashboard Cite

Pharmaceutical wastewater can be difficult to treat with conventional physical/chemical and biological treatment systems. The presence of antibiotics in sewage selects for resistance markers that are able to spread through the microbial community and as a result, antibiotic resistant bacteria can potentially disseminate their resistance genes widely among members of the endogenous microbial community. The sludge products of urban and rural wastewater treatment plants are increasingly used to fertilize agricultural crops, dispersing unknown amounts of resistance genes and antibiotics that withstand standard sewage treatment. Pharmaceutical wastewater effluents are well known for their difficult elimination by traditional biotreatment methods and their important contribution to environmental pollution due to its fluctuating and recalcitrant nature. OTC is one of the nonbiodegradable antibiotics that makes antibiotic-resistant, so it can make be high risk for environment. NZVI can be a good choice for removal of OTC in aqueous solution. Response surface methodology (RSM) was used to optimize the amounts of NZVI and OTC to be used at pH 3 and under 200 W, UV-A irradiation. The responses were removal percent of absorption at 290 and 348 nm, TOC and COD of OTC. In the optimum condition, Linear model was performed 155 ppm of OTC were removed by 1000 ppm NZVI after 6.5 hours and the removal efficiency of absorption at 290 and 348 nm, TOC and COD were 87, 95, 85 and 89 percent, respectively. In the similar process, there is no organic compound after 14 hours. The parameters ORP, DO and pH were investigated for 6:30 hours to study the type of NZVI reaction in process. In the beginning of reaction, oxidation was the dominant reaction after 3 hours, photo catalytic reaction was remarkable. The mechanism of OTC degradation is proposed by HPLC/ESI-MS and four by products were found. Also the rate constants (first order kinetic chain reaction model) were 0.0099, 0.0021, 0.0010, 0.0049 and 0.0074 min -1 , respectively.

show abstract

“…78 Seitz et al 79 found that TiO 2 NPs (∼100 nm; 0.2 mg/L) could reduce nearly 30% of the pirimicarb concentration under UV irradiation (40 W/m 2 for 15 minutes), which resulted in an almost complete removal of pirimicarb toxicity to D. magna. Zhao et al 80 indicated that TiO 2 NPs under UV irradiation could degrade oxytetracycline, which is widely used in both human and veterinary medicine. Higher degraded toxic byproducts were detected by a standardized bioluminescence assay of inhibition rate on Vibrio qinghaiensis sp.-Q67 (Q67), which indicates that a possible enhancement in ecological toxicity may occur after combination of TiO 2 NPs with oxytetracycline under UVA irradiation.…”

Section: Effects Of Tio 2 Np Interaction With Organic and Inorganic Cmentioning

confidence: 99%

Toxic effects of the interaction of titanium dioxide nanoparticles with chemicals or physical factors

Liu

Lin²,

Zhao

2013

IJN

View full text Add to dashboard Cite

Due to their chemical stability and nonallergic, nonirritant, and ultraviolet protective properties, titanium dioxide (TiO 2 ) nanoparticles (NPs) have been widely used in industries such as electronics, optics, and material sciences, as well as architecture, medicine, and pharmacology. However, increasing concerns have been raised in regards to its ecotoxicity and toxicity on the aquatic environment as well as to humans. Although insights have been gained into the effects of TiO 2 NPs on susceptible biological systems, there is still much ground to be covered, particularly in respect of our knowledge of the effects of the interaction of TiO 2 NPs with other chemicals or physical factors. Studies suggest that interactions of TiO 2 NPs with other chemicals or physical factors may result in an increase in toxicity or adverse effects. This review highlights recent progress in the study of the interactive effects of TiO 2 NPs with other chemicals or physical factors.

show abstract

Photodegradation of oxytetracycline in aqueous by 5A and 13X loaded with TiO2 under UV irradiation

Cited by 120 publications

References 34 publications

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

Focus on kineticcs of removal antibiotics wastewater by nano-zero valent iron in oxidation and photoxidation process

Toxic effects of the interaction of titanium dioxide nanoparticles with chemicals or physical factors

Contact Info

Product

Resources

About