Journal
CARBOHYDRATE POLYMERS
Volume 252, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117158
Keywords
Cellulose; Carbon nanotubes; NiFe2O4; Congo red; Adsorption
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Funding
- Scientific and Technological Development Project of Taizhou City [1701hb02]
- National Natural Science Foundation of China [51208331]
- Zhejiang Provincial Natural Science Foundation of China [LY20E080002]
- Science Foundation of Taizhou University for Distinguished Young Scholars [2018JQ001]
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The magnetic NiFe2O4 nanoparticles and multi-walled carbon nanotubes functionalized cellulose composite showed high adsorption capacity for Congo Red in aqueous solution. It can be a promising and recyclable engineering biomaterial for purification and treatment of practical wastewater due to its rapid magnetic separation and high adsorption capacity.
Magnetic NiFe2O4 nanoparticles and multi-walled carbon nanotubes functionalized cellulose composite (mNiFe(2)O(4)/MWCNTs@cellulose) as a magnetic bioadsorbent was prepared and used for effectively removing Congo Red (CR) from aqueous solution. The chemical and physical properties of the prepared m-NiFe2O4/ MWCNTs@cellulose were characterized by XRD, TGA, FT-IR, VSM, SEM and TEM. Batch experiments were carried out to investigate the adsorption capacity and mechanisms. Effects of different adsorption parameters such as initial CR concentration, adsorbent dosage and temperature were studied. Results demonstrated that mNiFe(2)O(4)/MWCNTs@cellulose had high adsorption capacity for CR from aqueous solution. The obtained experimental data fitted well with the pseudo-second-order equation and followed the Langmuir isotherm model with a maximum adsorption capacity of 95.70 mg g(-1) for CR. The m-NiFe2O4/MWCNTs@cellulose with rapid magnetic separation and high adsorption capacity can be a promising and recyclable engineering biomaterials for purification and treatment of practical wastewater.
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