Solidification of hazardous waste by cement-based techniques | |
| Author | Khomgrit Leangon |
| Call Number | AIT Thesis no.EV-93-10 |
| Subject(s) | Solidification Hazardous wastes |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | A laboratory study was conducted to determine the best binder for each of sludge obtained from tannery and semi-conductor manufacturing industry. The sludge from tannery contained chromium and organic matter while the other sludge contained copper, lead and tin. The binders were various combination of cementitious materials (CMT) namely; Ordinary Portland Cement (OPC), Lime (LM), Rice Husk Ash (RHA), Fly Ash (FA) and Silica Fume (SF). The sludge samples were analyzed in order to ensure the cement-based solidifying techniques. The various proportions of CMT were pre-tested with a raw sludge, to find the best possible binders for further study. All possible binders were tested against both sludges. The comparisons of the results in terms of compressive strength, leachability and cost were investigated. These parameters were also employed to assess the effectiveness of the binders in immobilizing the waste constituents. Leachability was determined by the Extraction Procedure Toxicity Test (EP Tox). The best binders were found as followed; Source of sludge: Mixed proportion Max.permissible sludge/CMT ratio. From tannery: OPC:RHA:FA=0.7:0.2:0.1 0.64. From semi-conductor manufacturing industry: OPC:RHA:FA=0.7:0.1:0.2 1.37 The systems of solidification in field application were also proposed. Finally, the potential of utilization of solidified sludges were evaluated. |
| Year | 1993 |
| 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) | Samorn Muttamara; |
| Examination Committee(s) | Reutergardh, Lars Baetz;Lee, Seong-Key; |
| Scholarship Donor(s) | Government of Denmark; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |