Whey as a culture medium for abatement of water pollution | |
| Author | Wanpen Konkamolproak |
| Call Number | AIT Thesis no.839 |
| Subject(s) | Water--Pollution Factory and trade waste |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | Cheese waste can cause water pollution if disposed of as dairy waste. Thus, the physical, chemical and biological characteristics of whey were studied to find the appropriate methods for treatment of whey. The biological treatment system was considered in the treatment of whey because of its potential to achieve any degree of purification required. The first biological system studied was the waste treatment of whey by yeast. Since whey contains high content of lactose that may be utilized as a base for a medium on which yeast will grow. Both of Saccharomyces fragilis and Candida utilize were selected for producing yeast protein from whey and pollutant problem can also be eliminated in the meantime. It was found that the COD removal efficiency of about 80% and 53% after 96 hours aeration time could be obtained from 5% inoculum size of s. fragilis and C. utilis respectively. On the other hand, based on 96 hours aeration time, 20% inoculum size of S, fragilis yielded 50% protein of dry yeast, and 21% protein of dry yeast was obtained from 5% inoculum size of C. utilis. The second system under study was the continuous complete-mixed activated sludge process. Various detention time of 6, 8, 10, 12 hours were investigated, the COD removal efficiency was as high as 95-96%. Finally, the treatment of whey followed by bacterial system were performed. The yeast protein recovery and high COD removal were achieved success fully. |
| Year | 1975 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Nguyen Cong Thanh |
| Examination Committee(s) | Yang, Yi Ping ;Samorn Muttamara |
| Scholarship Donor(s) | British Government |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1975 |