tailieunhanh - Improvement of CO2 purifying system by photocatalyst for application in microalgae culture technology

This study focused on the improvement of exhaust gas treatment from coal-fired flue gas of the traditional adsorption-catalysis system (Modular System for Treating Flue Gas - MSTFG) by using the V2O5/TiO2 Rutile as photocatalyst. The results showed that integrating both catalytic systems mentioned above increased the gas treatment efficiency: CO from 77 % to over 98 %, NOx from 50 % to 93 %, SO2 was absent as opposed to the input gas component. | Tạp chí Khoa học và Công nghệ 54 (1) (2016) 92-98 IMPROVEMENT OF CO2 PURIFYING SYSTEM BY PHOTOCATALYST FOR APPLICATION IN MICROALGAE CULTURE TECHNOLOGY Doan Thi Oanh1, *, Quach Thi Hoang Yen2, Nguyen Thi Toan2, Nguyen Quoc Trung2, Tran Que Chi2, Nguyen Hong Chuyen3, Tran Thi Minh Nguyet2, Bui Thi Kim Anh3, Dang Dinh Kim3 1 Ha Noi University of Natural Resources and Environment, 41A Phu Dien Road, Hanoi 2 3 Institute of Materials Science, VAST, 18 Hoang Quoc Viet Road, Hanoi Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi * Email: doanoanh158@ Received: 26 April 2015; Accepted for publication: 11 October 2015 ABSTRACT By reactive grinding method Vanadium-doped rutile TiO2 nanoparticle material was obtained with an average particle size of 20‐40nm, the Brunauer–Emmet–Teller (BET) specific surface area about 20 m2g−1 and it absorbed strongly in the UV region and increased at the visible wavelength of 430 – 570 nm. This study focused on the improvement of exhaust gas treatment from coal-fired flue gas of the traditional adsorption-catalysis system (Modular System for Treating Flue Gas - MSTFG) by using the V2O5/TiO2 Rutile as photocatalyst. The results showed that integrating both catalytic systems mentioned above increased the gas treatment efficiency: CO from 77 % to over 98 %, NOx from 50 % to 93 %, SO2 was absent as opposed to the input gas component. Also it showed that V2O5/TiO2 Rutile integrated with MSTFG has got high efficiency of CO treatment, also secured the high obtained CO2 concentration as a valuable carbon source for microagal mass culture as well as saving energy and simplifying devices. Keywords: traditional adsorption-catalysis system, photocatalyst, integrating, coal-fired flue gas, carbon source. 1. INTRODUCTION Process of burning coal can emit kinds of exhaust harmful gas out to atmosphere such as dust particles with minor sizes (PM), SOx, NO2, VOCs and a big volume of CO2 gas, which participate in .