| Author | Baral, Anil |
| Call Number | AIT Thesis no. EV-97-07 |
| Subject(s) | Sewage--Purification--Phenol removal
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-97-07 |
| Abstract | Bioregeneration is a special feature of Biological Activated Carbon (BAC) process.
The bioregeneration lengthens the service period of Granular Activated Carbon (GAC) and
provides significant cost savings in operation because of reduction in energy consumption for
GAC regeneration. This study has focused on the batch bioregeneration of GAC loaded with
phenols with a view to investigate kinetics of bioregeneration and bioregeneration mechanism.
The extent of bioregeneration was quantitatively determined using a simple equation based on
adsorption capacity of GAC. Two types of model compounds namely phenol and 2,4-
dicholorophenol (2,4-DCP) were used in batch bioregeneration experiments.
The batch bioregeneration efficiency of GAC loaded with phenols was found to be
modest. The results obtained revealed that about 31 % capacity of GAC loaded with phenol
and 14-22% capacity of2,4-DCP loaded with 2,4-DCP was regenerated over a period of 7-10
days. Desorption studies coupled with batch bioregeneration experiments showed that
desorption by exoenzyme reaction can be one of the possible factors for regeneration of active
sites on GAC. The kinetics studies demonstrated that a first order kinetics may explain the
pattern of bioregeneration in the batch bioregeneration. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-97-07 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Ishibashi, Yoshinobu; |
| Examination Committee(s) | Eckhardt, -Ing H. ;Takizawa, S.; |
| Scholarship Donor(s) | DAAD/Germany; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1997 |