School of Chemical Science, Universiti Sains Malaysia, 11800 Penang, Malaysia.
Bioresour Technol. 2012 Aug;118:633-7. doi: 10.1016/j.biortech.2012.05.090. Epub 2012 May 26.
The objectives of this study were: (1) to investigate the role of mixed culture of biomass in the regeneration of mono-amine modified silica (MAMS) and granular activated carbon (GAC) loaded with Acid Orange 7 (AO7), (2) to quantify and compare the bioregeneration efficiencies of AO7-loaded MAMS and GAC using the sequential adsorption and biodegradation approach and (3) to evaluate the reusability of bioregenerated MAMS. The results show that considerably higher bioregeneration efficiency of AO7-loaded MAMS as compared to that of AO7-loaded GAC was achieved due to higher reversibility of adsorption of MAMS for AO7 and favorable pH factor resulting in more AO7 desorption. The progressive loss of adsorption capacity of MAMS for AO7 with multiple cycles of use suggests possible chemical and microbial fouling of the adsorption sites.
（1）研究混合生物量在单胺修饰的硅胶（MAMS）和载有酸性橙 7（AO7）的颗粒活性炭（GAC）再生中的作用，（2）通过顺序吸附和生物降解方法定量和比较 AO7 负载的 MAMS 和 GAC 的生物再生效率，（3）评估生物再生 MAMS 的可重复使用性。结果表明，由于 MAMS 对 AO7 的吸附具有更高的可逆性和更有利的 pH 因素，导致更多的 AO7 解吸，因此与 AO7 负载的 GAC 相比，AO7 负载的 MAMS 的生物再生效率要高得多。随着多次使用，MAMS 对 AO7 的吸附容量逐渐下降，这表明吸附位点可能存在化学和微生物污染。
