Low pressure plasma functionalized cellulose fiber for the remediation of petroleum hydrocarbons polluted water

JOURNAL OF HAZARDOUS MATERIALS

卷:373

Article

Tursi, A.¹  De Vietro, N.²  Beneduci, A.^1,3  Milella, A.^2,4  Chidichimo, F.^3,5  Fracassi, F.^2,4  Chidichimo, G.^1,3 

[1] Univ Calabria, Dept Chem & Chem Technol, Via P Bucci,Cubo 15D, I-87036 Arcavacata Di Rende, CS, Italy

[2] Univ Bari Aldo Moro, Dept Chem, Natl Res Council CNR, Inst Nanotechnol Nanotec, Via Orabona 4, I-70126 Bari, Italy

[3] Univ Calabria, Dept Chem & Chem Technol, SIRiA Srl Serv Integrati & Ric Ambiente, Via P Bucci,Cubo 15D, I-87036 Arcavacata Di Rende, CS, Italy

[4] Univ Bari Aldo Moro, Dept Chem, Via Orabona 4, I-70126 Bari, Italy

[5] Univ Calabria, Dept Environm & Chem Engn, Via P Bucci,Cubo 41B, I-87036 Arcavacata Di Rende, CS, Italy

关键词: Superhydrophobic fluorine grafted cellulose;    Total petroleum hydrocarbons;    Water remediation;    Low pressure plasma;   

DOI  :  10.1016/j.jhazmat.2019.04.022

来源: Elsevier

【 摘 要 】

This work reports the first example of effective purification, at laboratory level, of water polluted by petroleum hydrocarbons, by means of low pressure plasma fluorine grafted cellulose fiber extracted from Spanish Broom. In order to improve the affinity of the cellulosic surface towards water dispersed hydrocarbons, its original hydrophilic character was turned to super-hydrophobic, by a fluorine functionalization. Batch experiments were performed with the aim of studying kinetic and thermodynamic aspects of the adsorption process, as a function of the initial total hydrocarbon load and of the adsorbent amount. The kinetics data showed that the fiber removal efficiency ranged between 80-90% after one minute of contact time, in dependence of the initial hydrocarbon/fiber weight ratio (20-240 mg/g). A maximum adsorption capacity larger than 270 mg/g was estimated by fitting the adsorption isotherm measurements with the Langmuir model. It turned out that the functionalized fiber is capable to perform a significant hydrocarbons removal action if compared to other cellulosic materials reported in the literature. Finally, the efficiency of the plasma modified cellulose fiber, after iterative re-uses, was studied.

【 授权许可】

Free