4. ConclusionsThe by-product flax s

4. Conclusions
The by-product flax shive cellulose was chemically modified
to facilitate the removal of RR228 from aqueous solution. The
adsorbent exhibited strong affinity for RR228 molecules. The maximum
adsorption reached 190 mg g−1 for a solution of 80 mg L−1
at 20 ◦C which is far higher than that of activated carbon. A
pseudo-second-order model adequately described the adsorption
process. The high correlation coefficients calculated for the Langmuir
isotherm revealed the adsorption of RR228 onto the adsorbent
can be described as chemisorption. The adsorption was exothermic,
spontaneous, and favorable. The CFSC adsorbent will be a promising
alternative to activated carbon for large-scale effluent treatment.
Acknowledgement
The authors are grateful for the financial support of the Fundamental
Research Funds for the Central Universities (DL12DB04).