Fabrication of magnetic activated carbons from corn cobs using the pickle liquor from the surface treatment of iron and steel

WANG Fang; DANG Yan-qiu; TIAN Xun; Steven Harrington; MA Lei; MA Yan-qing

doi:10.1016/S1872-5805(18)60340-3

Volume 33 Issue 4

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WANG Fang, DANG Yan-qiu, TIAN Xun, Steven Harrington, MA Lei, MA Yan-qing. Fabrication of magnetic activated carbons from corn cobs using the pickle liquor from the surface treatment of iron and steel. New Carbon Mater., 2018, 33(4): 303-309. doi: 10.1016/S1872-5805(18)60340-3

Citation:

WANG Fang, DANG Yan-qiu, TIAN Xun, Steven Harrington, MA Lei, MA Yan-qing. Fabrication of magnetic activated carbons from corn cobs using the pickle liquor from the surface treatment of iron and steel. New Carbon Mater., 2018, 33(4): 303-309. doi: 10.1016/S1872-5805(18)60340-3

Citation:

WANG Fang, DANG Yan-qiu, TIAN Xun, Steven Harrington, MA Lei, MA Yan-qing. Fabrication of magnetic activated carbons from corn cobs using the pickle liquor from the surface treatment of iron and steel. New Carbon Mater., 2018, 33(4): 303-309. doi: 10.1016/S1872-5805(18)60340-3

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Fabrication of magnetic activated carbons from corn cobs using the pickle liquor from the surface treatment of iron and steel

doi: 10.1016/S1872-5805(18)60340-3

1.
Key Laboratory of Materials Chemistry in Binzhou City, Department of Chemical Engineering and Safty, Binzhou University, Binzhou 256600, China;
2.
School of Precision Instrument & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China;
3.
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, Tianjin 300072, China

Funds: Shandong Natural Science Foundation of China (ZR2014BL014, ZR2015BL012); Project of Shandong Province Higher Educational Science and Technology Program (J14LC54); Project of Binzhou City Science and Technology Development Project (2014ZC0212, 2014ZC0321); Binzhou University Projects (BZXYHZ20161010, BZXYL1801, 201610449035); Shihezi University Projects (SRP2015118, 201510759021, 2015BTRC002).

Received Date: 2018-04-05
Accepted Date: 2018-08-30
Rev Recd Date: 2018-06-02
Publish Date: 2018-08-28

Abstract

Abstract

Corn cobs were impregnated with the pickle liquor from the surface treatment of iron and steel at ambient temperature for 24 h, dried at 393 K for 12 h and carbonized at 573, 773 and 973 K for 1 h to obtain magnetic activated carbons (MACs). The adsorption of methyl orange (MO) onto the MACs was investigated under different conditions. Results show that the surface area of the MACs increases with carbonization temperature from 423.5 to 784.76 m² g^-1. The MACs consist of hematite (Fe₂O₃) and magnetite (Fe₃O₄). The MAC obtained at 973 K has the highest MO monolayer adsorption capacity of 555.56 mg g^-1 at 298 K in a water sample containing MO dye. The adsorption is endothermic and obeys pseudo-first-order kinetics. The MACs can be easily separated from the dye water by an external magnet.
- Corn cob,
- Carbon materials,
- Hydrochloric acid pickling water,
- Methyl orange

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