Remediation of soil contaminated with dioxin by bio-nano technique | |
| Author | Chaiyaporn Imsapsangworn |
| Call Number | AIT Thesis no.EV-12-05 |
| Subject(s) | Dioxins--Environmental aspects Soil pollution |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Dioxins are one of the most sever persistent organic pollutants (POPs) in the environmental. Dioxins are of concern due mainly to their highly toxic potential. Based upon many research studies, dioxins can affect a number of human’s organs and systems. Once dioxins enter the body, they endure for a long time because of their chemical stability and their ability to be adsorbed by fat tissue, where they are then stored in the body. In the environment, dioxins tend to accumulate in the food chain. The higher in the animal food chain one goes, the higher the concentration of dioxins. This study was conducted as a part of the project “Outreach on Environmentally Sound Treatment of Hazardous Chemical in Asia” in order to investigate the application of sequential anaerobic and aerobic biodegradation and nano zero valence iron (nZVI) to remediate or degrade dioxin presented in the contaminated soil samples in batch systems. The research objectives have been reached by conducting a laboratory scale experiment whereas degradation rate of dioxin was obtained from spiking dioxin (≥ 12.5 ppb) into the agricultural soil of loamy sand texture (80% sand) with very low organic matter content (0.42%) The results of the study have shown that highest percentage of removal efficiency of dioxin was 75.44% obtaining from a nano treatment followed by bio-nano treatment (57.68%) and bio treatment (57.28%). The result feather indicated that both of the individual nano and individual bio treatments have the potential to degrade dioxin because of the individual reaction can reach the maximum ability to get rid of dioxin. Whereas when both treatments were combined, the reaction potential seemed to be lower perhaps the level of nZVI (0.62%) used might be harmful and inhibited some microorganism activities in the dioxin dioxin contaminated soil. |
| Year | 2012 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Preeda Pakpian; |
| Examination Committee(s) | Nguyen, Thi Kim Oanh;Thammarat Koottatep; |
| Scholarship Donor(s) | Ministry of Foreign Affairs, Norway;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2012 |