Photocatalytic degradation of formaldehyde containing wastewater from veterinarian laboratories

被引：65

作者：

Araña, J ^{[1
]}

Nieto, JLM ^{[1
]}

Melián, JAH ^{[1
]}

Rodríguez, JMD ^{[1
]}

Díaz, OG ^{[1
]}

Peña, JP ^{[1
]}

Bergasa, O ^{[1
]}

Alvarez, C ^{[1
]}

Méndez, J ^{[1
]}

机构：

[1] Univ Las Palmas Gran Canaria, Photocatalysis & Electrochem Lab, E-35017 Las Palmas Gran Canaria, Spain

来源：

CHEMOSPHERE | 2004年 / 55卷 / 06期

关键词：

photocatalysis; methanol; formaline; photonic efficiency; FTIR;

D O I：

10.1016/j.chemosphere.2003.11.060

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photocatalytic destruction of methanol, formaline (mixture of formaldehyde, methanol and water) and formaline wastes from the preservation of vertinarian physiologic samples has been attempted by two different processes, at high concentrations of reagents and by dossification of reagents, varying pH in both. Experiment evolution has been monitored by measuring the organic matter such as TOC and formaldehyde concentrations [H2CO]. Also, methanol and methanol-formaldehyde interactions with the TiO2 surface have been analysed by FTIR spectroscopy. Results indicate that at high concentrations the catalyst surfacial alterations given by methoxy, formates or carbonates, according to the pH of the sample can profoundly affect catalyst behaviour. It has been established that reagent dossification is advantageous for enhancing photonic efficiency as it minimizes the adsorbate presence that hampers the photocatalytic process. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：893 / 904

页数：12

共 31 条

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