产乙酸细菌BP103菌株对糖蜜废水的脱色作用
Decolorization of molasses wastewater by a strain No.BP103 of acetogenic bacteria.
作者信息
Sirianuntapiboon Suntud, Phothilangka Phimphaka, Ohmomo Sadahiro
机构信息
Department of Environmental Technology, School of Energy and Materials, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand.
出版信息
Bioresour Technol. 2004 Mar;92(1):31-9. doi: 10.1016/j.biortech.2003.07.010.
Among 170 strains of acetogenic bacteria, a strain No.BP103 showed the highest decolorization yield (76.4+/-3.2%) when cultivated at 30 degrees C for 5 days in molasses pigments medium containing glucose 3.0%, yeast extract 0.5%, KH2PO4 0.1% and MgSO4 x 7H2O 0.05% and the pH adjusted to 6.0. In addition this strain could decolorize 32.3+/-3.2% and 73.5+/-3.5% of molasses pigments in stillage and anaerobically treated molasses wastewater, both supplementing glucose 3.0%, yeast extract 0.5%, KH2PO4 0.1% and MgSO4 x 7H2O 0.05%. However without nutrients supplement, the decolorization yields were 9.75+/-3.0% and 44.36+/-3.4%, respectively. In a replacement culture system involving six times replacement (30 days), the strain No.BP103 showed a constant decolorization yield of 72.0+/-3.2-84.0+/-3.2% and caused decreases of biological oxygen demand and chemical oxygen demand values of approximately 58.5+/-6.4-82.2+/-7.1% and 35.5+/-0.42-71.20.58%, respectively. Under a periodical feeding system, the decolorization yield was 30.0+/-2.1-45.0+/-3.5%.
在170株产乙酸细菌中，一株编号为BP103的菌株在含有3.0%葡萄糖、0.5%酵母提取物、0.1% KH₂PO₄和0.05% MgSO₄·7H₂O且pH值调至6.0的糖蜜色素培养基中于30℃培养5天时，表现出最高的脱色率（76.4±3.2%）。此外，该菌株能够使含有3.0%葡萄糖、0.5%酵母提取物、0.1% KH₂PO₄和0.05% MgSO₄·7H₂O的酒糟滤液和厌氧处理后的糖蜜废水中32.3±3.2%和73.5±3.5%的糖蜜色素脱色。然而，在不补充营养物质的情况下，脱色率分别为9.75±3.0%和44.36±3.4%。在一个涉及六次更换（30天）的替代培养系统中，BP103菌株表现出72.0±3.2 - 84.0±3.2%的恒定脱色率，并使生物需氧量和化学需氧量值分别降低了约58.5±6.4 - 82.2±7.1%和35.5±0.42 - 71.2±0.58%。在定期进料系统下，脱色率为30.0±2.1 - 45.0±3.5%。
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