Title:
Towards Zero Waste: Anaerobic Digestion of Vegetable Waste and Development of Digestate-derived Material as an Effective Peroxymonosulfate Activator for Orange G Removal
Author(s):
Farsad, S., Halmaciu, I.-A., Ionel, I., Vintila, T., El Alem, N.
Document(s):
Paper
Poster
Abstract:
The anaerobic digestion of vegetable waste (VW) can lead to substantial amounts of solid waste digestate, often lacking proper disposal methods. This study investigated two main aspects. Firstly, a significant quantity of methane as an energy source was generated through anaerobic digestion of vegetable waste under mesophilic conditions, resulting in a biologically activated digestate. Secondly, biochar was derived from vegetable waste digestate (VWD) through pyrolysis, and its ability to activate peroxymonosulfate (PMS) for Orange G (OG) removal was examined. The findings demonstrated that the addition of biochar and PMS effectively removed 100% of OG. Furthermore, this approach exhibited excellent OG degradation across a broad pH range of 3.0 to 9.0 and displayed high efficiency in the presence of various organic pollutants, highlighting its adaptability, universality, and practicality. The removal process's efficiency was attributed to catalytic sites in the biochar that activated PMS to produce reactive oxygen species. The results revealed that the VWD/PMS/OG system followed non-radical degradation pathways involving singlet oxygen (1O2) as the primary contributor to OG degradation.
Keywords:
anaerobic digestion, vegetable waste digestate, PMS activation, Orange G, degradation
Topic:
Biomass Conversion to Biomaterials and Chemicals
Subtopic:
Processes for biomaterials and bio-based chemicals
Event:
33rd European Biomass Conference and Exhibition
Session:
6BV.2.17
Pages:
1108 - 1113
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-6BV.2.17
Price:
FREE
