AI SearchEngineering conditions of constructed wetlands for cadmium removal and toxicity reduction (Record no. 37880)
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| fixed length control field | 04266nas a2200433 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818095940.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 080821s2008 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b1200831x |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Diss. no.EV-08-6 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Varangkana Visesmanee |
| 245 10 - TITLE STATEMENT | |
| Title | Engineering conditions of constructed wetlands for cadmium removal and toxicity reduction |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2008 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 83 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Dissertation ; |
| Volume/sequential designation | no. EV-08-6 |
| 500 ## - GENERAL NOTE | |
| General note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Environmental Engineering and Management Inter-University Program on Environmental Toxicology, Technology and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Asian Institute of Technology - Chulabhorn Research Institute - Mahidol University, 2008 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This study was conducted to investigate the long-term performance of subsurface-flow constructed wetland (SFCW) units treating a wastewater containing Cadmium (Cd). The hydraulic retention time (HRT) was found to have significant effects on the chemical oxygen demand (COD) and total nitrogen (TN) removal, SFCW units operating at the HRT of 8 days yielded the best treatment efficiencies with COD and TN removal of 93 and 94 %, respectively and the first order kinetic coefficient (k₂₀) of COD and TN removal were found to be 0.23 and 0.24 d⁻¹, respectively. The Cd removal efficiencies of SFCW units operating at the HRT of 1, 3, 5 and 8 days were found to be 50, 92, 98 and 99 % corresponding to the average effluent Cd concentrations of 8.3±0.6, 1.8±0.4, 0.7±0.6 and 0.2±0.1 mg/L, respectively. The Cd was removed about 70-77 % by retaining in SFCW beds due to such mechanisms as adsorption, sedimentation and filtration. Most of retained Cd in SFCW wetland media was found to be in the Fe/Mn bound and residual fractions that would remain insoluble in SFCW beds. However, plant uptake also played the role for Cd removal which was contributed about 62S %. The Cd fractions in the SFCW effluent were mostly found in the Cd ion. The Cd complex form was found to increase with increasing HRTs, Based on adsorption mechanism only, the maximum Cd adsorbed on the SFCW media was found to be 78 g, which was later used to calculate breakthrough times of Cd in the SFCW effluent. The calculated breakthrough times of the SFCW units operating at the HRT of 1, 3, 5 and 8 days were found to be 56, 166, 278 and 433 days, respectively. However, the observed Cd breakthrough times from the experiments were found to be longer than the calculated values which were probably caused by other mechanisms such as sedimentation, filtration and plant uptake. The XTT cytotoxicity test with T47D human breast cancer cells suggested the effluent from SFCW units operating at the HRTs of 5 and 8 days could reduce Cd toxicity; while Microtox technique by bioluminescent bacteria showed the toxicity reduction of the effluent for all HRTs |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Cadmium |
| General subdivision | Physiological effects |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Constructed wetlands |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chongrak Polprasert, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Jutamaad Satayavivad, |
| Relator term | Co-Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Apinya Thiantanawat, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gallardo, Wenresti G., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Chulabhorn Research Institute |
| Relator term | Scholarship donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Mahidol University, |
| Relator term | Scholarship donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology Fellowship, |
| 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 | Dissertation ; |
| Volume/sequential designation | no. EV-08-6 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B00544">http://203.159.5.9/ait-thesis/detail.php?q=B00544</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
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| a | 240401 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 080821 |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 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 : 30050120725758 |
| CREATED | CREATED : 2012-08-16 |
| RECORD Id | RECORD # : i12686931 |
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| Barcode | Barcode : 30050160004312 |
| CREATED | CREATED : 2016-09-02 |
| RECORD Id | RECORD # : i12878789 |
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| 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 Diss. no.EV-08-6 | 30050120725758 | 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 Diss. no.EV-08-6 | 30050160004312 | 18/08/2026 | 18/08/2026 | 40-Archives |