MODELING AND OPTIMIZATION OF PHOTOCATALYTIC TREATMENT OF PRE-TREATED PALM OIL MILL EFFLUENT (POME) IN A UV/TIO2 SYSTEM USING RESPONSE SURFACE METHODOLOGY (RSM)
MODELING AND OPTIMIZATION OF PHOTOCATALYTIC TREATMENT OF PRE-TREATED PALM OIL MILL EFFLUENT (POME) IN A UV/TIO2 SYSTEM USING RESPONSE SURFACE METHODOLOGY (RSM)
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DOI：
10.1080/23311916.2017.1382980
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发表时间：
2017-10-04
影响因子：
1.9
通讯作者：
Khan, Afrasyab
中科院分区：
文献类型：
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作者：
Alhaji, Mohammed Haji;Sanaullah, Khairuddin;Khan, Afrasyab
采用UV/TiO 2光催化体系对棕榈油加工废水中的COD、BOD和色度进行降解。一种称为面心中心复合设计的统计工具已经通过响应面方法使用设计专家软件来模拟和优化光降解过程。合成的TiO_2颗粒的SEM平均尺寸为100 nm，这证实它是分散的。XRD显示的主峰出现在22.3度处，这表明所形成的TiO 2是纳米级的。FTIR结果显示1，406.50和1，452.50 cm（-1）的峰值，表明形成了TiO 2纳米晶，而在2，900 cm（-1）处没有出现峰，表明煅烧后所有有机化合物都已除去。三种污染物的三个模型是不显着的，从Prob > F值为0.0584的COD，0.0612的BOD和0.4239的颜色显示，这证实了所提出的模型拟合实验数据。在初始pH值为5.50、催化剂投加量为4.84mg、反应时间为42.86min的条件下，COD、BOD和色度的去除率分别为59.43- 96.81%、48.05-102.68%和60.63-94.29%。通过方差分析得到的回归分析提供了显着的二次多项式的决定系数R-2为0.9646，BOD和颜色去除分别为0.9496和0.9223。
This study aimed at the degradation of COD, BOD and Color present in palm oil mill effluent (POME) using UV/TiO2 system. A Statistical tool called face-centered central composite design has been run through response surface methodology by the use of design expert software to model and optimize the photodegradation process. The SEM average size of the synthesized TiO2 particle is 100nm and this confirm that it is anatase. The prominent peak as reveal by XRD occur at 22.3 degrees and this indicates that TiO2 formed is anatase. The FTIR results shows a peak value of 1,406.50 and 1,452.50 cm(-1) indicating that the TiO2 anatase is formed while nonappearance of the peak at 2,900 cm(-1) indicates that the all organic compounds have been removed after calcination. The three models developed for the three pollutants are non-significant as revealed from the Prob > F values of 0.0584 for COD, 0.0612 for BOD and 0.4239 for color and this confirms that proposed models fit the experimental data. The optimum conditions for the three parameters are 5.50 for initial pH, 4.84mg for catalyst dosage and 42.86min for time and the percentage removal of the COD, BOD, and color are within the range of 59.43-96.81%, 48.05-102.68% and 60.63-94.29% respectively. Regression analysis obtained through analysis of variance provided significant quadratic polynomial with the coefficient of determination R-2 = 0.9646, 0.9496 and 0.9223 for COD, BOD, and Color removal respectively.