Selection of suitable adsorbent for the removal of Cr(VI) by using objective based multiple attribute decision making method

Abstract

The objective of the current manuscript is to develop a systematic and simplified expert system for the selection of suitable adsorbent to treat Cr(VI). Selection of adsorbent among the large options available by considering all possible factors and their interaction is required in an easy, organized and rational way. In this study, fuzzy logic is used for the choosing an appropriate adsorbent for the Cr(VI) removal. Multiple attribute decision making (MADM) is utilized to work out the relative weighting values for the chosen sorbent. The preference index is calculated by using the subjective and objective weights. The normalized value associated with each parameter has given on the basis of effect of each parameter on the removal of Cr(VI) and uptake capacity of each material. The associated MADM method results and the barriers of the approach is mentioned to lay the basis for in addition enhancement.

Keywords:

• Cr(VI)
• fuzzy number
• MADM
• preference index

Acknowledgments

The authors are thankful to the Director, BITS Pilani, K. K. Birla Goa Campus, India and also Chairman and Principal of KPR Intitute of Engineering and Technology, Coimbatore, India for permitting to publish the work.