Abstract
Composting has been demonstrated to be a feasible low cost technology for remediation of PAH contaminated soil. The aim of the present study was therefore to evaluate the concentration effects of PAHs on biodegradation of PAHs during composting treatment. Soil was spiked with three PAH compounds i.e., phenanthrene, anthracene and pyrene, each at 50,200.400 and 800 mg kg-1 (w/w dry weight) before co-composting with pig manure using sawdust as a bulking agent. The results show that the starting concentration of phenanthrene in the contaminated soil did not affect the removal efficiency of phenanthrene with over 95% removal, while the removal percentage of anthracene and pyrene decreased with an increase in their starting concentration. There was a strong negative correlation between percent removal and the starting concentration. The current findings suggest that soil contaminated with these 3 PAH compounds in the concentration range of 50 mg kg-1 to 400 mg kg-1 could effectively be remediated up to 75 to 95% of the initial concentrations by co-composting with pig manure.
| Original language | English |
|---|---|
| Title of host publication | Waste management. The challenge for Asian cities - Search for a sustainable future |
| Subtitle of host publication | Proceedings of the ISWA International Symposium and Exhibition on Waste Management in Asian Cities |
| Editors | C. S. Poon, P. C. K. Lei |
| Publisher | Hong Kong Polytechnic University |
| Pages | 170-175 |
| Number of pages | 6 |
| Volume | 2 |
| ISBN (Print) | 9623670305 |
| Publication status | Published - Oct 2000 |
| Event | ISWA International Symposium and Exhibition on Waste Management in Asian Cities - , Hong Kong Duration: 23 Oct 2000 → 26 Oct 2000 |
Conference
| Conference | ISWA International Symposium and Exhibition on Waste Management in Asian Cities |
|---|---|
| Country/Territory | Hong Kong |
| Period | 23/10/00 → 26/10/00 |
User-Defined Keywords
- Composting
- phenanthrene
- anthracene
- pyrene
- contaminated soil
- PAHs