ISSN:
1432-0797
Source:
Springer Online Journal Archives 1860-2000
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract Two immobilized bacterial cultures with the ability to metabolize 6-amino-2-naphthalenesulfonic acid (6A2NS) and 2-naphthalene-sulfonic acid (2NS) were investigated under suboptimal environmental growth conditions. The cultures were employed in continuously operated airlift loop-reactors. The physico-chemical growth parameters such as pH, temperature and dissolved oxygen concentration were varied. It was found that a decreasing growth rate in suboptimal conditions was compensated by increasing biomass concentration over a wide range. Operated continuously for more than 20 months, the 6A2NS-degrading system appeared to be reliable. After pH-shockloadings and long-term oxygen default, the immobilized microorganisms recovered almost immediately and stable operating conditions were achieved again within less than 48 h. These remarkable results were sustained with the 2NS degrading system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00369642
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