Oh B S, Song S J, Lee E T, Oh H J, Kang J W
Department of Environmental Engineering, Yonsei University, Wonju Campus, Hyeung-up Myon, Korea.
Water Sci Technol. 2004;49(4):45-9.
The purpose of this study was to investigate the catalytic role of granular activated carbon (GAC), and metal (Mn or Fe) doped-GAC, on the transformation of ozone into more reactive secondary radicals, such as hydroxyl radicals (*OH), for the treatment of wastewater. The GAC doped with Mn showed the highest catalytic performance in terms of ozone decomposition into OH radicals. Likewise, activated carbon alone accelerated the ozone decomposition, resulting in the formation of *OH radicals. In the presence of promoters, the ozone depletion rate was enhanced further by the Mn-GAC catalyst system, even under aqueous acidic pH conditions.
本研究的目的是研究颗粒活性炭（GAC）以及金属（锰或铁）掺杂的GAC在将臭氧转化为更具反应性的次级自由基（如羟基自由基（OH））以处理废水方面的催化作用。掺杂锰的GAC在臭氧分解为OH自由基方面表现出最高的催化性能。同样，单独的活性炭也加速了臭氧分解，导致OH自由基的形成。在有促进剂存在的情况下，即使在酸性水pH条件下，锰 - GAC催化剂体系也进一步提高了臭氧消耗率。
