| Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences | Host |
| Groundwater Science and Engineering Limited | Publish |
| Citation: |
XING Chen, YU Cheng-long, BI Er-ping, DAI Jin-e. Interactions between benzotriazole and corncob biochars pyrolyzed at different temperature[J]. Journal of Groundwater Science and Engineering, 2016, 4(4): 320-327.
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Interactions between benzotriazole and corncob biochars pyrolyzed at different temperature
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Abstract
The sorption of ionizable benzotriazole (BTA) to corncob biochars pyrolyzed at different temperature (i.e., 300 oC, 500 oC and 800 oC) was investigated in this study. Biochars produced at higher temperature showed higher surface area, micropore volume and aromaticity. Consequently, the sorption of BTA changed from absorption to adsorption for biochars pyrolyzed at 300 oC and 800 oC, respectively. Solution pH affected speciation of BTA and surface charge properties of biochars. For BTA0, H-bond, partition and micropore filling are dominant sorption mechanisms. For BTA-, it is suggested that negative charge-assisted H-bond plays an important role in sorption. Corncob biochar pyrolyzed at high temperature (e.g., 800 oC) showed the highest sorption affinity for BTA. Ca2+ in solution enhanced BTA- and BTA0 sorption through cation-bridge and surface complexation.-
Keywords:
- Benzotriazole /
- Biochar /
- H-bond /
- Micropore filling /
- Sorption /
- Charge-assisted H-bond
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Citation
XING Chen, YU Cheng-long, BI Er-ping, DAI Jin-e. Interactions between benzotriazole and corncob biochars pyrolyzed at different temperature[J]. Journal of Groundwater Science and Engineering, 2016, 4(4): 320-327.
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