AI Article Synopsis
- A highly efficient VOC adsorbent was developed using waste bovine bone, which underwent pyrolysis and surface modification to enhance its properties.
- The materials were characterized through various methods, showing a significant increase in pore volume and specific adsorption capacity for volatile organic compounds (VOCs).
- Results indicated that the modified bone char exhibited improved adsorption dynamics and a better capacity for VOCs compared to existing materials, attributed to its hierarchical pore structure.
Article Abstract
In this work, very efficient VOCs adsorbent was developed from waste bovine bone. After pyrolysis at 450 °C, the bone char was treated by HPO for surface modification and activated by KCO respectively. The prepared materials were characterized by N adsorption isotherms, SEM, FT-IR, and XPS. Adsorption/desorption and regeneration behavior of VOCs were also studied. Results showed that HPO modification can effectively accelerate the adsorption process and after KCO activation, a new hierarchical pore structure was found with an ultrahigh total pore volume of 2.807 cm/g. The specific adsorption capacity for typical VOC reached ∼13.03 mmol/g which is much higher than literature data under the same condition. Static toluene adsorption test on the prepared activated bone-char revealed that the hierarchical structure has provided abundant adsorption sites and the adsorption behavior can be well described by the pseudo-second-order model. The dynamic/static adsorption ratio increased from 70.31% to 78.62% due to less mass transfer resistance by surface modification.
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| http://dx.doi.org/10.1016/j.chemosphere.2020.127054 | DOI Listing |
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