AI SearchA preliminary study on heavy metal removal from contaminated soils using supercritical fluid extraction (Record no. 91107)
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| fixed length control field | 03966nas|a2200385 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818173856.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 020799s1999 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11753961 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-99-3 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Zhu, Ling |
| 245 12 - TITLE STATEMENT | |
| Title | A preliminary study on heavy metal removal from contaminated soils using supercritical fluid extraction |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1999 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 68 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-99-3 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The goal of the study was to investigate the feasibility of removing heavy metals from the tlu·ee types of tropical soil which is different in character, by chelation in supercritical carbon dioxide. The selected topsoil were Karat sandy soil, Pakchong kolinitic soil, and Rangsit acid sulfate soil. Copper was used as the model contaminant while Hexafluoracetylacetone (HF A) as a chelating agent. This study was consisted of two parts include ( 1) The investigation of the effect of density, temperature, methanol modifier, extraction time, HF A/Cu molar ratio, soil pH, moisture content and contaminant level on the extraction efficiency and (2) The comparison of the recovery yield, cost, and waste disposal problem between Supercritical fluid extraction and solvent extraction which is widely used in real site remediation. For the first part, The result indicated that, under optimum condition of SFE, 82%, 74%, 56% removal of copper can be achieved for Korat, Pakchong and Rangsit soils, respectively. Increased the density from 0.25 to 0.75 g/ml, it was found to have negligible effect on the copper recovery. At constant density (0.55 g/ml) increased the temperature from 40 °c to 80 °C were found to have negative effect on Rangsit soil and negligible effect on Korat and Pakchong soil. Adding methanol at 5% had the highest yield for all tlu·ee kinds of studied soils. The dynamic extraction time was conducted varying from 5 to 35 min. The pH appears to be an important factor determine the extraction efficiencies. The effective pH range has lied between 3 to 10. Addition of a small amount of water to the soil samples can significantly increase the extraction efficiency. Extraction of higher contaminated soil get higher recovery. The possible reasons were discussed. For the second pru1, by comparison between the two methods, it is discovered that both SFE and solvent extraction can yield quite similar removal efficiency. However, SFE is an environmental-friendly method for removing heavy metal in contaminated soil while conventional method created the waste disposal problem. It is important to conduct further study in order to reduce the treatment cost of the new SFE technique and enable it to be commercially accepted. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Soil remediation |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Preeda Pakpian, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ozaki, Hiroaki, |
| Relator term | Examination committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Apisit Eiumnoh, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | AIT employee Student, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-99-3 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B12038">http://203.159.5.9/ait-thesis/detail.php?q=B12038</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11753961 |
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| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240411 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 990702 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | y |
| -- | 2 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120654867 |
| CREATED | CREATED : 2014-03-19 |
| RECORD Id | RECORD # : i12772835 |
| LPATRON | LPATRON : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160077714 |
| CREATED | CREATED : 2016-05-23 |
| RECORD Id | RECORD # : i12988042 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.EV-99-3 | 30050120654867 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-99-3 | 30050160077714 | 18/08/2026 | 18/08/2026 | 40-Archives |