AI Article Synopsis
- Discarded circuit boards are a growing source of non-biodegradable waste in the electronics industry, prompting research into recycling methods.
- This study focuses on converting discarded epoxy resin into activated carbon (AC) using carbonization and activation techniques, resulting in carbon materials with oxygen-containing groups and specific adsorption properties.
- The research shows that activated carbon effectively adsorbs methyl orange, aligning with the quasi-secondary kinetic model and Langmuir isotherm, indicating potential for recycling waste and reducing environmental pollution while also offering economic benefits.
Article Abstract
With the swift progress of the electronics industry, discarded circuit boards have become an important source of non-degradable waste. In this work, discarded epoxy resin was collected as a precursor to prepare activated carbon (AC) through stepwise carbonization/activation methods. The rough carbon materials with a certain graphite and amorphous structure reveal the multiple oxygen-containing groups on their surface. In the process of studying the adsorption of methyl orange by activated carbon, it is found that the adsorption is in accordance with the quasi-secondary kinetic model, and equilibrium adsorption amounts can reach 41.051 mg/g. The adsorption isotherm of AC is more in line with the Langmuir model, and the saturation adsorption amount at three different temperatures is 23.137 mg/g, 30.358 mg/g, and 37.202 mg/g, respectively. The enthalpy (ΔH) is 17.30 KJ/mol in the adsorption process, which indicates that is a physical process with heat-absorbing capabilities. This work is of great significance with regard to the recycling of waste to reduce pollution and in terms of gaining economic benefits.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11207575 | PMC |
| http://dx.doi.org/10.3390/polym16121648 | DOI Listing |
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