AI SearchThe effect of linear alkylbenzene sulfonate (LAS) in activated sludge system (Record no. 34466)
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| fixed length control field | 03655nas a2200433 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818095008.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 011298s1986 th r 000| 0eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10690505 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-86-19 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Waraporn Hirunwatsiri |
| 245 14 - TITLE STATEMENT | |
| Title | The effect of linear alkylbenzene sulfonate (LAS) in activated sludge system |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1986 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 57 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-86-19 |
| 500 ## - GENERAL NOTE | |
| General note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Asian Institute of Technology, 1986 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The effect of linear alkylbenzene sulfonate (LAS) in activated sludge system, focusing on its influence in COD removal efficiency was studies. Experiments have been done at different LAS concentrations, varying from 20 to 120 mg/L in continuous activated sludge process and at 20 and 40 mg/L of MBAS (Methylene blue active substance) in batch-fed activated sludge process. OECD (organization for Economic Co-operation and Development) synthetic sewage with 230-300 mg/L of COD was used throughout this experiment. In the batch activated sludge process, at 1500 mg/L of MLSS the synthetic sewage was biologically degraded mainly within the first 2 h. ninety three (93), 88 and 80% COD removal efficiencies were achieved within 3 h. corresponding to 0, 20, 40 mg/L of MBAS. In the continuous activated sludge process with 2 h. detention and 2500 mg/L of MLSS, the COD removal efficiency were 84.68, 81.33, 74.25% which corresponded to 30, 70, 120 mg/L of MBAS and 1.81, 2.25, 2.73 kg COD/ kg MLSS-d of organic loadings. The COD removal was not a result of adsorption onto the sludge since less MBAS concentration was detectable upon extraction of the sludge. The results showed that increasing LAS concentrations at the same time as increasing organic loading affected COD removal efficiency. LAS as high as 120 mg/L showed no inhibitory effect on the growth late of microorganisms in the continuous activated sludge system. It can degrade very fast and achieve 98% of MBAS removal at this concentration. In the batch-fed activated sludge system, no inhibitory effect on the growth rate of microorganism was observed at LAS concentrations as high as 40 mg/L. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sewage |
| General subdivision | Purification |
| -- | Activated sludge process |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Samorn Muttamara, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hanaki, K., |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shin, Hang Sik, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Swiss Government, |
| 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-86-19 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B19647">http://203.159.5.9/ait-thesis/detail.php?q=B19647</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10690505 |
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| a | 240402 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
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| 962 ## - | |
| -- | 000:001:PDF:b1069050:004660:0:0:0:0:0:0 |
| -- | Abstract |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 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 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120749923 |
| CREATED | CREATED : 2014-03-28 |
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| Barcode | Barcode : 30050120223994 |
| CREATED | CREATED : 2016-09-05 |
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| CREATED | CREATED : 2023-10-04 |
| RECORD Id | RECORD # : i13442661 |
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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-86-19 | 30050120749923 | 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-86-19 | 30050120223994 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.EV-86-19 | 30050121073752 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |