International Journal of Environmental Technology and Management (1 paper in press)

• A Comparative Study of the performance behavior of adsorbent materials used for the treatment of spent cutting fluids
  by Sandeep Tiwari, P. C. Pandey, H. Singh, P. K. Mishra 
  Abstract: Safe disposal of Spent Cutting Fluids (SCFs) in material processing industries is a serious problem. The high cost ultra-filtration method normally employed for the treatment of SCFs, has made it necessary to develop better alternatives to the existing techniques so as to control the cost of waste disposal to the environment. The authors have proposed the use of agro-waste product i.e. arhar stem (cajanus cazan) as adsorbents for removal of oil from water based SCFs. In addition agro based waste materials such as rice husk , bagasse and saw-dust were also experimented. However, there is a need for characterization and grading of the adsorbents through extensive experimental and analytical investigations. This research paper focuses on the replacement of the costly activated carbon for the waste water treatment by using easily available agro based products in modified and unmodified forms. This paper presents the results of the application of Analytical Hierarchy Process (AHP) for the selection and grading of adsorbents to be used for the processing of SCFs. The results obtained by AHP have been compared with the experimental results obtained from batch adsorption studies carried out under varied conditions.
  Keywords: AAdsorbent, Adsorption, Analytical Hierarchy Process, Spent cutting fluid