AI SearchHybrid constructed wetland for phosphorus removal in eutrophicated pond water (Record no. 56687)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 05685nas a2200481 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818133955.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 170531s2014 u m rtt 000 a eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12200839 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.ET-SUD-17-01 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Ahmed, Ismail Baba |
| 245 10 - TITLE STATEMENT | |
| Title | Hybrid constructed wetland for phosphorus removal in eutrophicated pond water |
| 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. | 2017 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 120 p. : |
| Other physical details | ill. + |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. ET-SUD-17-01 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Environmental Engineering and Management with specialization in Environmental Technology and Sustainable Development jointly offered by the Asian Institute of Technology, Thailand and UNESCO{u2013}IHE, The Netherlands |
| 500 ## - GENERAL NOTE | |
| General note | AIT-UNESCO-IHE |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 2017 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Phosphorus removal in constructed wetlands is largely dependent on removal capacity of its media. The purpose of this research was to formulate synthetic media (SM) for constructed wetland through thermal treatment of clay amended with iron filings (IF), oyster shell (OS), and sawdust (SW), for removing phosphorus in eutrophicated pond waters. Out of the eighteen SMs produced, SM01 {u2013} SM06 having OS > 10% wt. developed cracks which led to fragmentation within one week of exposure to air, however, immersing them in water immediately after production did not result into failure, though pH of water increased. In the batch experiment, Phosphorus Removal Efficiency (PRE) and pH of the media showed positive correlation with OS proportion, but negative correlation with IF for all the initial phosphate concentrations tested, though all the correlations were insignificant (p > 0.05). All the formulated media did not fit to Langmuir model, but those with OS < 2% fitted to Freundlich model. At maximum initial phosphate concentration of 4.0 mg P/L, highest (99.9%) and lowest (0.48%) PRE were recorded by SM07 and SM18 at pH of 11.5 and 8.0 respectively. In order to understand the mechanisms involved in phosphorus removal at high and low OS proportion, SM07 (10% OS) and SM15 (1% OS) were subjected to batch kinetic experiments. The kinetic data for the two media were well described by Pseudo First Order (PFO), Pseudo Second Order (PSO), and Intra-particle diffusion model. Phosphorus removal occurred through mechanisms of chemical precipitation and adsorption. In a column experiment conducted for the first three stable media, average phosphorus removal efficiency recorded were SM07 (99.7%), SM08 (99.4%), SM09 (92.2%), and gravel (15.4%). After 30 d, it was only gravel that approached saturation. However, only SM09 leached iron (> 200 mg Fe/L), while iron was not detected in effluents of other columns. In a pilot scale experiment with media SM15, maximum removal performance of 78% Total Phosphorus (TP) was achieved by planted bed at HRT of 3 d with influent TP > 0.5 mg/L. But, internal phosphorus release occurred at influent TP < 0.1 mg/L. First order removal rate constant, k, at HRT of 3 d for planted and unplanted beds were 0.22 and 0.08 m/d respectively. Moreover, in the planted bed, phosphorus removal was achieved through particulate settling and bioaccumulation (56%), plant storage (6%), gravel adsorption (19%), and synthetic media adsorption (19%). But, in unplanted bed, 100% removal was through particulate settling and bioaccumulation. For other parameters, best performances were also achieved at HRT of 3 d. Maximum removals were 67% (COD) and 97% (TSS). However, NO3- recorded net increase greater than 10%. Moreover, iron release from planted bed (9.8 mg Fe/L) and unplanted beds (2.8 mg Fe/L) occurred when effluent Ca concentration approached inlet concentration. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Constructed wetlands |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage |
| General subdivision | Purification |
| -- | Phosphate removal |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Thammarat Koottatep, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Bruggen, Hans van, |
| Relator term | Co-chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Annachhatre, Ajit P., |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chongrak Polprasert, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Netherlands Fellowships Programmes (NFP), |
| Relator term | Scholarship donor |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | UNESCO-IHE, |
| 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 | Thesis ; |
| Volume/sequential designation | no. ET-SUD-17-01 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B02387">http://203.159.5.9/ait-thesis/detail.php?q=B02387</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12200839 |
| b | mnait |
| c | m |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240419 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 180419 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | m |
| -- | 0 |
| 962 ## - | |
| -- | 000:001:PDF:b1220083:004077:0:0:0:0:0:0 |
| -- | Click to view Abstract |
| -- | n |
| 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 : 30050120510838 |
| CREATED | CREATED : 2018-04-19 |
| RECORD Id | RECORD # : i13125515 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120510804 |
| CREATED | CREATED : 2018-04-19 |
| RECORD Id | RECORD # : i13125527 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120397996 |
| CREATED | CREATED : 2018-07-18 |
| RECORD Id | RECORD # : i13135181 |
| 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.ET-SUD-17-01 | 30050120510838 | 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 | 50.00 | AIT Thesis no.ET-SUD-17-01 | 30050120510804 | 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.ET-SUD-17-01 | 30050120397996 | 18/08/2026 | 18/08/2026 | 40-Archives |