Abstract
BACKGROUND Pre-concentration of two different emerging pollutants – an endocrine disruptor and a chlorinated paraffin – was carried out by adsorption/desorption cycle onto carbonaceous materials – activated carbon (GF-40), multiwall carbon nanotube (MWCNT) and a high surface area graphite (HSAG-500) – The breakthrough curves were modeled by Bed Depth Service Time (BDST), Thomas and Yoon-Nelson models. RESULTS MWCNT presents for both compounds the highest normalized adsorption capacity. Although GF-40 offers 100% of elution efficiency, no pre-concentration was obtained with this adsorbent. Contrary, pre-concentration was reached with MWCNT and HSAG-500. The best results were obtained with MWCNT -pre-concentration factor of 3.4 for DCO and 2.8 for MPET -. BDST and Thomas models can predict the adsorption capacity and Yoon-Nelson the time requires to reach the 50% adsorbate breakthrough. CONCLUSIONS The pre-concentration was reached using MWCNT and HSAG-500 as adsorbent. MWCNT is the best adsorbent, since this material presents the highest normalized adsorption capacity and concentration factor.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Chemical Technology & Biotechnology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
