Heavy metal leaching from contaminated soil by acetic acid | |
| Author | Tran Hong Giang |
| Call Number | AIT Thesis no.EV-01-22 |
| Subject(s) | Soil remediation Soils--Heavy metal content Acetic acid |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | This study was carried out to evaluate and determine the applicability of using acetic acid in removal of heavy metals from contaminated soils. With acetic acid at pH 2.8, produced easily from organic wastes, soil was treated with the highest efficiency. The acid solution was applied in column experiment by surface flooding to increase to the solubility and mobility of metals in the soil, that is Cd and Ni were removed from soil after estimated about 120 clays of treatment. When acetic acid solution at pH 2.8 was applied to treat the soil, soil pH was reduced from initial value of 5.2 to 3.9. However, acetic acid can be a food source for microorganism in soil, when organic acid reduced, soil pH was increased to initial values after 80 day, that may not cause negative effect to plant growth. Because the treatment of the soil removes the large part of available metals, so after a certain time, the population of microorganisms significantly increased. Bacteria were limited in acid habitats; the fungi dominated the microbial community in areas of low pH, the number of fungi could increased 4 times with control when com . Some bacteria were persisting for long periods in such unfavorable circumstance. Once the organic acids in soil reduce fungi activities reduce, the bacteria will return rapidly to a position of importance. |
| Year | 2001 |
| 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 and Management (EV) |
| Chairperson(s) | Nguyen Cong Thanh |
| Examination Committee(s) | Fukushi, Kensuke; Preeda Parkpian |
| Scholarship Donor(s) | CEC-DAAD |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2001 |