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Updated: Jul 25, 2026

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
Fibrous Silica KCC-1 as a Platform for Mn-Based Dual Metal Oxide Adsorbents for CO2 Capture
Syawal Mohd Yusof1, Azizul Hakim Lahuri2, Nurul Asikin Mijan3
1Department of Science and Technology, Universiti Putra Malaysia Bintulu Campus, Nyabau road, P.O. Box 396, 97008 Bintulu, Sarawak, Malaysia.. awalsyawal34@gmail.com.
Abstract:
The continuous rise in atmospheric CO2 levels due to industrial emissions and fossil fuel combustion has intensified the need for efficient carbon capture. Solid adsorbents are favoured for their reusability and low energy demand, yet often face limitations in thermal stability and adsorption performance. This study examines the effect of co-loading manganese (Mn) with potassium (K), copper (Cu), and calcium (Ca) on fibrous silica KCC-1 for CO2 capture over a wide temperature range. KCC-1 was synthesised via a microemulsion method, and metals were introduced using an ultrasonic-surfactant-assisted impregnation technique. Characterisation using XRD, FTIR, BET, FESEM-EDX, and CO2-TPD confirmed structural integrity, surface functionality, and adsorption behaviour. CaO-MnO@KCC-1 shows the most balanced textural properties and the highest CO2 uptake due to its strong basicity and varied adsorption site strength. This highlights its potential as a temperature-flexible CO2 adsorbent.
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