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Efficient adsorption using peach stone-derived granular activated carbon
Tayengwa Christopher Maponga1, Courtie Mahamadi1
1Chemistry Department, Bindura University of Science Education, P. Bag 1020, Bindura, Zimbabwe.
Scientific Reports
|March 6, 2019
Summary
Agricultural waste can be converted into granular activated carbon for effective gold recovery. This low-cost material shows promise for optimizing gold extraction in metallurgical processes.
Area of Science:
- Materials Science
- Environmental Chemistry
- Metallurgical Engineering
Background:
- Agricultural wastes are increasingly explored as sustainable precursors for activated carbon production.
- Granular activated carbon (GAC) is vital for adsorbing valuable metals from solutions.
Purpose of the Study:
- To investigate the efficacy of GAC derived from agricultural waste for aurocyanide adsorption.
- To optimize the gold recovery process using this novel GAC.
Main Methods:
- Chemical activation with zinc chloride followed by physical activation at high temperatures in a nitrogen environment.
- Batch sorption studies to evaluate adsorption performance.
Main Results:
- GAC prepared from agricultural waste effectively adsorbed aurocyanide from solution.
- The gold recovery process using this GAC was amenable to optimization of key parameters like carbon dosage, initial aurocyanide concentration, and contact time.
Conclusions:
- Low-cost GAC derived from agricultural waste presents a viable alternative for gold recovery.
- This method holds potential for application in the carbon-in-pulp metallurgical process.
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