Journal of Chemical Engineering & Process Technology
Open Access
ISSN: 2157-7048
ISSN: 2157-7048
Katanchalee Mai-ngam
Thailand
Research Article
Honeycomb Structures of TiO2-modified Hydroxyapatite Composite for
Microbial Filtration Application
Author(s): Naruporn Monmaturapoj, Witoon Thepsuwan, Suda Wanakitti, Charusporn Mongkolkachit, Katanchalee Mai-ngam, Sawinee Ngernpimai, Wattana Klinsukhon and Chureerat PrahsarnNaruporn Monmaturapoj, Witoon Thepsuwan, Suda Wanakitti, Charusporn Mongkolkachit, Katanchalee Mai-ngam, Sawinee Ngernpimai, Wattana Klinsukhon and Chureerat Prahsarn
Honeycomb structures of TiO2-modified hydroxyapatite composite (HA/TiO2) were fabricated using extrusion technique. The mixture formulations of HA/TiO2 extrusion pastes (S1-S4) were investigated to optimize the process. The filtering effectiveness of the HA/TiO2 honeycombs was evaluated by photocatalytic activity measurement and a bactericidal test. The effects of sintering temperature and honeycomb thickness on photocatalytic and antibacterial activities were additionally studied. The S3 and S4 honeycomb samples, sintered at 650�C, exhibited a similar trend in reducing methylene blue concentration. At 800�C, the S3 honeycomb sample showed a slightly faster reduction in methylene blue concentration compared to the S4 honeycomb. Honeycomb samples of 2 and 5 cm in thickness showed significantly greater photocatalytic activity than that of 1 cm such that methylene blue concentrations rapidl.. View More»
DOI:
10.4172/2157-7048.1000221