A Comparison of Direct and Indirect Methods to Evaluate Oil Sorption Capacity of Fabrics Sorbent Materials

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Lian, Zhouyang^1 ; Luo, Zhengwei^2 ; Lu, Hao^3 ; Wei, Wuji^1

College of Environmental Sciences and Engineering, Nanjing Tech University, Nanjing

210009, China^1

College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing

210009, China^2

College of Energy Science and Engineering, Nanjing Tech University, Nanjing

210009, China^3

关键词: Accuracy and precision;    Coefficient of variation;    Direct and indirect methods;    Extraction time;    Indirect methods;    Relative errors;    Sorbent materials;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012070/pdf
DOI  :  10.1088/1755-1315/218/1/012070

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Although an indirect method is widely used to evaluate oil sorption capacity of fiber materials for remediating oily water, a direct method has recently been proposed. To compare two methods, we first studied the effect of extraction time, the accuracy and precision for the direct method. Similarly, precision of the indirect method and the underlying sources of error were also investigated. The minimal extraction time required for the direct method was found to be 180 min. The relative error of direct method was less than 2.61 %, its standard deviation was less than 1.60 %o, and its coefficient of variation was less than 0.313 %. The standard deviation of the indirect method was more than 55.1 %, and its coefficient of variation was more than 16 %. The error in the indirect method mainly came from the heterogeneity of oily water, which led to large, random differences between samples that could not be eliminated.