Kinetic research on dechlorinating dichlorobenzene in aqueous system by nano-scale nickel/iron loaded with CMC/NFC hydrogel
In: Chemosphere, Jg. 194 (2018-03-01), S. 297-305
Online
unknown
Zugriff:
In this study, we reported on the nano-scale nickel/iron particles loaded in carboxymethyl/nanofibrillated cellulose (CMC/NFC) hydrogel for the dechlorination of o-dichlorobenzene (DCB) in aqueous solution. The biodegradable hydrogel may provide an ideal supporting material for fastening the bimetallic nano-scale particles, which was examined and characterized by TEM, SEM-EDX, FT-IR and BET. The performance of the selected bimetallic particles was evaluated by conducting the dechlorination of DCB in the solution under different reaction conditions (e.g., pH, dosage of nickel/iron nanoparticles and temperature). The results showed that about 70% of DCB could be dechlorinated at 20 °C in 8 h, which indicated that the immobilized reactive material had a high reduction activity when Ni/Fe loading dosage in the hydrogel (18 wt%) was considered. Moreover, the reduction behavior agreed to the pseudo-first order reaction, in which the dechlorination rate was irrelative to the pH aqueous solution. A kinetic model for predicting the concentration of DCB during the reduction reaction was established based on the experimental data.
Titel: |
Kinetic research on dechlorinating dichlorobenzene in aqueous system by nano-scale nickel/iron loaded with CMC/NFC hydrogel
|
---|---|
Autor/in / Beteiligte Person: | Youming, Li ; Liu, Yu ; Chai, Xin-Sheng ; Chen, Guang-Xue ; Wan, Xiao-Fang ; Guo, Congbao |
Link: | |
Zeitschrift: | Chemosphere, Jg. 194 (2018-03-01), S. 297-305 |
Veröffentlichung: | Elsevier BV, 2018 |
Medientyp: | unknown |
ISSN: | 0045-6535 (print) |
DOI: | 10.1016/j.chemosphere.2017.11.142 |
Schlagwort: |
|
Sonstiges: |
|