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, Xiaobin; Harrington, Steven; Ma, Yanqing

doi:10.1016/s1872-5805(18)60340-3

Cited by 9 publications

(2 citation statements)

References 19 publications

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“…It can be seen from Figure 9 c,d in the FTIR and XPS diagrams of β-FeOOH/Fe 3 O 4 /biochar before use and after the third use that the structure of β-FeOOH/Fe 3 O 4 /biochar has no special effects, which also verifies that β-FeOOH/Fe 3 O 4 /biochar can maintain excellent photocatalytic activity after reuse [ 42 ].…”

Section: Resultsmentioning

confidence: 97%

Photocatalytic Activity of Magnetic Nano-β-FeOOH/Fe3O4/Biochar Composites for the Enhanced Degradation of Methyl Orange Under Visible Light

Zhang

Wang

et al. 2021

Nanomaterials

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A novel nano-β-FeOOH/Fe3O4/biochar composite with enhanced photocatalytic performance and superparamagnetism was successfully fabricated via an environmentally friendly one-step method. The structural properties of the prepared composite were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, and a vibrating sample magnetometer. The XPS spectrum of the as-prepared composites confirmed the presence of Fe-O-C bonds between β-FeOOH and biochar, which could be conducive to transfer photo-generated electrons. UV-vis spectroscopy confirmed the existence of an electron–hole connection between β-FeOOH and biochar, which promoted the rapid interface transfer of photogenerated electrons from β-FeOOH to biochar. These novel structures could enhance the response of biochar to accelerate the photoelectrons under visible light for more free radicals. Electron spin resonance analysis and free radical quenching experiments showed that •OH was the primary active species in the photodegradation process of methyl orange by nano-β-FeOOH/Fe3O4/biochar. In the synergistic photocatalytic system, β-FeOOH/Fe3O4/biochar exhibited excellent catalytic activity for the degradation of azo dye (methyl orange), which is 2.03 times higher than that of the original biochar, while the surface area decreased from 1424.82 to 790.66 m2·g−1. Furthermore, β-FeOOH/Fe3O4/biochar maintained a stable structure and at least 98% catalytic activity after reuse, and it was easy to separate due to its superparamagnetism. This work highlights the enhanced photocatalytic performance of β-FeOOH/Fe3O4/biochar material, which can be used in azo dye wastewater treatment.

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Section: Resultsmentioning

confidence: 97%

Photocatalytic Activity of Magnetic Nano-β-FeOOH/Fe3O4/Biochar Composites for the Enhanced Degradation of Methyl Orange Under Visible Light

Zhang

Wang

et al. 2021

Nanomaterials

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“…This new composite has a highly porous structure, a latent heat of 144.2 J•g -1 , excellent thermal stability and high performance of the composite stability in constructions. Wang et al (2018) impregnated corn cobs with pickle liquor (obtained from surface treatment of iron and steel) to obtain magnetically activated carbon. After impregnation, the corn cob material was dried at 120 °C for 24 h, and carbonized at 300, 500, and 700°C.…”

Section: Introductionmentioning

confidence: 99%

Using four pelletizing machines with flat die and different capacities for obtaining the best pellets from corn cobs waste

Lunguleasa

Spirchez

Rădulescu

2020

BioRes

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Making pellets from corn cobs, the goal of this work, was motivated by the abundance of vegetable biomass. Corn is used in both animal and human food. Four pelletizing presses with flat die and different capacities were considered. The influence of the capacity of the pellet mills on the density of the obtained pellets was established by increasing the capacities of the pellet mills to increase the density of the pellets. The waste of crushed corn cobs was used for pelletizing. The energy characteristics of the pellets from corn cobs were determined, with a high calorific value of 20.0 MJ·kg-1 and a calorific density of 19.8 MJ·m-3; these values were much higher than the wood species used currently in combustion. The black and calcined ash contents of 24.7% and 2.3%, respectively, were also obtained. Based on the main properties of experimental pellets, corn cob waste can be regarded as suitable for transformation into pellets with good characteristics. The positive influence of capacity press increase on density of pellets was also highlighted.

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Nitrogen-Rich Magnetic Bio-Activated Carbon from Sericin: A Fast Removable and Easily Separable Superadsorbent for Anionic Dye Removal

2020

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

Cited by 9 publications

References 19 publications

Photocatalytic Activity of Magnetic Nano-β-FeOOH/Fe3O4/Biochar Composites for the Enhanced Degradation of Methyl Orange Under Visible Light

Photocatalytic Activity of Magnetic Nano-β-FeOOH/Fe3O4/Biochar Composites for the Enhanced Degradation of Methyl Orange Under Visible Light

Using four pelletizing machines with flat die and different capacities for obtaining the best pellets from corn cobs waste

Nitrogen-Rich Magnetic Bio-Activated Carbon from Sericin: A Fast Removable and Easily Separable Superadsorbent for Anionic Dye Removal

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