EFFECTS OF SUBOPTIMAL ENVIRONMENTAL-CONDITIONS ON IMMOBILIZED BACTERIA GROWING IN CONTINUOUS CULTURE

被引：16

作者：

DIEKMANN, R ^{[1
]}

NAUJOKS, M ^{[1
]}

GERDESKUHN, M ^{[1
]}

HEMPEL, DC ^{[1
]}

机构：

[1] UNIV GESAMTHSCH PADERBORN,WARBURGER STR 100,W-4790 PADERBORN,GERMANY

来源：

BIOPROCESS ENGINEERING | 1990年 / 5卷 / 01期

关键词：

D O I：

10.1007/BF00369642

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

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. © 1990 Springer-Verlag.

引用

页码：13 / 17

页数：5

共 7 条

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