Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
J Hazard Mater. 2015 Mar 21;285:398-408. doi: 10.1016/j.jhazmat.2014.12.024. Epub 2014 Dec 12.
A novel cylindrical multi-column photocatalytic reactor (CMCPR) has been developed and successfully applied for the degradation of methyl orange (MO), amoxicillin (AMX) and 3-chlorophenol (3-CP) in water. Due to its higher adsorption capacity and simpler molecular structure, 3-CP compared with MO and AMX obtained the highest photodegradation (100%) and mineralization (78.1%) after 300-min photocatalytic reaction. Electrical energy consumption for photocatalytic degradation of MO, AMX and 3-CP using CMCPR was 5.79×10(4), 7.31×10(4) and 2.52×10(4) kW h m(-3) order(-1), respectively, which were less than one-thousand of those by reported photoreactors. The higher flow rate (15 mL min(-1)), lower initial concentration (5 mg L(-1)) and acidic condition (pH 3) were more favorable for the photocatalytic degradation of MO using CMCPR. Five repetitive operations of CMCPR achieved more than 97.0% photodegradation of MO in each cycle and gave a relative standard deviation of 0.72%. In comparison with reported slurry and thin-film photoreactors, CMCPR exhibited higher photocatalytic efficiency, lower energy consumption and better repetitive operation performance for the degradation of MO, AMX and 3-CP in water. The results demonstrated the feasibility of utilizing CMCPR for the degradation of recalcitrant organic pollutants in water.
一种新型的圆柱形多柱光催化反应器（CMCPR）已经被开发出来，并成功应用于水中甲基橙（MO）、阿莫西林（AMX）和 3-氯苯酚（3-CP）的降解。由于其更高的吸附能力和更简单的分子结构，与 MO 和 AMX 相比，3-CP 在 300 分钟的光催化反应后获得了最高的光降解（100%）和矿化（78.1%）。使用 CMCPR 进行 MO、AMX 和 3-CP 的光催化降解的电能消耗分别为 5.79×10(4)、7.31×10(4)和 2.52×10(4)kW h m(-3) order(-1)，均小于已报道的光反应器的千分之一。更高的流速（15 mL min(-1)）、更低的初始浓度（5 mg L(-1)）和酸性条件（pH 3）更有利于 CMCPR 对 MO 的光催化降解。CMCPR 的五次重复操作在每个循环中实现了超过 97.0%的 MO 光降解，相对标准偏差为 0.72%。与已报道的浆态和薄膜光反应器相比，CMCPR 表现出更高的光催化效率、更低的能耗和更好的重复操作性能，用于水中 MO、AMX 和 3-CP 的降解。结果表明，利用 CMCPR 降解水中难降解有机污染物是可行的。
