Biopile and landfarming systems are ex situ technologies developed for the remediation of contaminated soils. In this study, laboratory degradation experiments and a combined full-scale landfarming and biopile system were operated for the remediation of diesel fuel-contaminated soils. The effectiveness of bulking agents (wood chips and rice hulls), inorganic nutrients (N and P), and biological agent on petroleum hydrocarbon biodegradation were also evaluated. The ratios of contaminated soils to bulking agents applied in the experiments were 1:0, 3:1, 6:1, and 10:1. The soil to bulking agent ratio of 10.7:1 was applied in the full-scale system.
After 93 days of incubation, the highest reduction rate for total petroleum hydrocarbon - diesel (TPHd) removal was observed in the experiment with a soil to bulking agent ratio of 3:1. Results show that TPHd degradation trend followed a typical first-order degradation pattern. The calculated regression coefficient ranged from 0.008 ¡V 0.0129. Results also indicate that the addition of biological agent had a significant enhancement of TPHd removal.
Results from the full-scale study show that the average TPHd concentrations from 5,544 mg/kg to 488 mg/kg after 231 days of operation. This implies that approximately 91.2% of TPHd removal was obtained. Field results show that temperature affected biodegradation rates, production of CO2, total hererotrophic bacterial biomass, and TPHd reduction efficiencies. Thus, temperature plays an important role for the operation of is biopile and landfarming systems.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0813104-115458 |
| Date | 13 August 2004 |
| Creators | Huang, Chung-jia |
| Contributors | none, none, none, none, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0813104-115458 |
| Rights | campus_withheld, Copyright information available at source archive |
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