AI SearchPotential leachability of toxic heavy metals in Bangkok sewage sludge (Record no. 89965)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04847cas|a2200433 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818172415.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 031200s2000 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11817100 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-00-13 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Pichit Poonpolwatanaporn |
| 245 10 - TITLE STATEMENT | |
| Title | Potential leachability of toxic heavy metals in Bangkok sewage sludge |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2000 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 75 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-00-13 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Utilization of sewage sludge on agricultural land as crop fertilizer is rece1vmg increased emphasis because sewage sludge contains heavy metals and pathogen. Heavy metals are potentially toxic to human life and the environment. The objectives of this research were to investigate the potential leachability of toxic heavy metal and pathogen reduction in sewage sludge. Chitosan and zeolite were used as adsorbing materials for heavy metal removal. Batch adsorption experiments of chitosan and zeolite mixed with dewatered sewage sludge from Si-Phraya CWTP were determined in the application ratio 0.1:10, 0.5: 10, 1.0:10, 2.0:10, 3.0:10 and 4.0:10 by weight, respectively. The experimental result showed that 1.0:10 chitosan-sewage sludge mixture and 3.0:10 zeolite-sewage sludge mixtures were the optimum ratios for the removal of heavy metals in sewage sludge. Moreover, remained nutrients after treated were still sufficient for plant growth. Four leachants, which are tap water in pH normal range (pH 7.07), tap water in 1.0 unit of pH less than normal range (pH 6.07), effluent from Si-Phraya CWTP (pH 7.20) and effluent adjust pH less than 2.0 (pH 1.5) were used in leaching test to compare the leachability and adsorption ability of heavy metals in optimum conditions. It was found that the treatment of heavy metals by using commercially available chitosan and zeolite improved both the absorption and removal efficiencies. Furthermore, the influence of the pH values of leachants on the removal capacities in leaching test was examined. It was found that from neutral to acid conditions, the heavy metals leaching was increased with the decrement of pH value in leachants. It can be concluded that at approximate neutral pH of the leachants, heavy metal removal from sewage sludge was minimum. However application of adsorbing materials mixed with sludge had caused a decreasing of heavy metals released. The magnitude of reduction however depends on rate of materials (zeolite and chitosan) used, the higher the ratios, the better results can be expected. Based upon column leaching test experiments, zeolite had higher heavy metal removal capacity over chitosan. The effect of fecal coliform reduction in different application rates of chitosan solution and incubation times was determined by using multiple-tube fermentation technique as indicator. The reduction efficiency increased with the increases of application rates and incubation time. The US EPA standards required that the fecal coliform in sewage sludge without restrictions must be lower than 1,000 MPN/g. (dry weight sludge solids). The experiment results showed that for the lower application rate it took more than 7-day to meet the standard. However, at more than 0.40% of chitosan solution, only 7 days were enough for reduction fecal coliform to meet standard. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage sludge |
| Geographic subdivision | Thailand |
| -- | Bangkok |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Leaching |
| Geographic subdivision | Thailand |
| -- | Bangkok |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Preeda Pakpian, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Fukushi, Kensuke, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Nguyen, Cong Thanh, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suwalee Chandrkrachang, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Mahanakorn University of Technology, |
| 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-00-13 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B06911">http://203.159.5.9/ait-thesis/detail.php?q=B06911</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11817100 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240916 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 991104 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120654404 |
| CREATED | CREATED : 1999-06-07 |
| RECORD Id | RECORD # : i12229428 |
| LPATRON | LPATRON : 1016279 |
| LCHKIN | LCHKIN : 2005-04-11 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 1 |
| -- | TOT CHKOUT : 9 |
| -- | TOT RENEW : 1 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120654438 |
| CREATED | CREATED : 1999-06-07 |
| RECORD Id | RECORD # : i1222943x |
| LPATRON | LPATRON : 1017032 |
| LCHKIN | LCHKIN : 2004-04-25 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 16 |
| -- | TOT RENEW : 2 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160077235 |
| CREATED | CREATED : 2016-05-24 |
| RECORD Id | RECORD # : i12989253 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | 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 | AIT Thesis no.EV-00-13 | 30050120654404 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT Thesis no.EV-00-13 | 30050120654438 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.EV-00-13 | 30050160077235 | 18/08/2026 | 18/08/2026 | 40-Archives |