Jump to main content
Jump to site search

Issue 102, 2016, Issue in Progress
Previous Article Next Article

Adsorptive desulfurization of dibenzothiophene over lignin-derived biochar by one-step modification with potassium hydrogen phthalate

Author affiliations

Abstract

A novel and efficient porous biochar was produced from alkali lignin via a synchronous carbonization/activation process and applied for the adsorption desulfurization of dibenzothiophene (DBT) at ambient temperature. Potassium hydrogen phthalate (KHP) was used as the activator for the first time, with the advantages of the autocatalytic activity of K+ for pore-creation, natural acidity for acid-catalyzed decomposition and surface oxidative modification of the lignin-derived biochar. The highest adsorption efficiency and adsorption capacity of DBT achieved were 98.8% and 33.8 mg S g−1, respectively, with the char yield up to 40 wt%. Analytical techniques such as BET, SEM, FTIR, TG/DTG and Boehm titration were employed and demonstrated that KHP was a promising activator for the highly porous structure and rich surface acidity of biochar. The isotherm data could be well described by the Langmuir model. Finally, the biochar could be regenerated 5 times with over 90% char yield and retain a high adsorption capacity of 29.2 mg S g−1.

Graphical abstract: Adsorptive desulfurization of dibenzothiophene over lignin-derived biochar by one-step modification with potassium hydrogen phthalate

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 10 Aug 2016, accepted on 30 Sep 2016 and first published on 03 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA20220A
Citation: RSC Adv., 2016,6, 100352-100360
  •   Request permissions

    Adsorptive desulfurization of dibenzothiophene over lignin-derived biochar by one-step modification with potassium hydrogen phthalate

    J. Li, H. Zhang, X. Tang and H. Lu, RSC Adv., 2016, 6, 100352
    DOI: 10.1039/C6RA20220A

Search articles by author