以高岭土为选择性培养基,从高岭土矿样品中分离到一株铁还原菌RBFL.经形态特征观察、生理生化特征和16S r DNA序列分析,鉴定其为短小芽孢杆菌(Bacillus pumilus).考察了以葡萄糖、蔗糖、麦芽糖、淀粉为碳源对RBFL菌还原高岭土中Fe2O3(Fe...以高岭土为选择性培养基,从高岭土矿样品中分离到一株铁还原菌RBFL.经形态特征观察、生理生化特征和16S r DNA序列分析,鉴定其为短小芽孢杆菌(Bacillus pumilus).考察了以葡萄糖、蔗糖、麦芽糖、淀粉为碳源对RBFL菌还原高岭土中Fe2O3(Fe3+)的影响,结果表明葡萄糖作为碳源,高岭土除铁效果最好,在葡萄糖质量分数为1%、矿浆质量分数为10%、铁还原菌液质量分数为5%、温度为30℃条件下厌氧培养7 d,高岭土中Fe3+去除率为44.94%,Fe2O3含量由0.89%降低至0.49%,自然白度由61.3提高至67.5,1 280℃烧成白度由84.9提高至90.1.展开更多
以高岭土为选择性培养基,从锰矿样品中分离到一株能够还原高岭土中Fe(Ⅲ)的铁还原菌FeRBFL1404。经形态特征观察、生理生化特征和16S r DNA序列分析,鉴定其为短小芽孢杆菌(Bacillus pumilus)。考察了以葡萄糖、蔗糖、草酸钠、柠檬酸三...以高岭土为选择性培养基,从锰矿样品中分离到一株能够还原高岭土中Fe(Ⅲ)的铁还原菌FeRBFL1404。经形态特征观察、生理生化特征和16S r DNA序列分析,鉴定其为短小芽孢杆菌(Bacillus pumilus)。考察了以葡萄糖、蔗糖、草酸钠、柠檬酸三钠为碳源对FeRB-FL14043菌还原高岭土中Fe2O3(Fe3+)的影响,结果表明葡萄糖作为碳源,高岭土除铁效果最好;在葡萄糖浓度为1%、矿浆浓度为10%、铁还原菌液加量为5%、温度为28℃、p H值6.5条件下厌氧培养10d,高岭土中Fe3+去除率为46.07%,Fe2O3含量由0.89%降低至0.48%,自然白度由61.3%提高至68.7%,1 280℃烧成白度由84.9%提高至90.6%。展开更多
The pollution of iron,manganese and nitrate in groundwater is a huge threat to human beings.In this study,column experiments of ceramic,manganese sand,ceramic sand,volcanic rock,quartz sand were conducted.Iron and man...The pollution of iron,manganese and nitrate in groundwater is a huge threat to human beings.In this study,column experiments of ceramic,manganese sand,ceramic sand,volcanic rock,quartz sand were conducted.Iron and manganese contents of influent were 3.3 mg/L and 2.1 mg/L.When the biofilm became mature,the highest iron and manganese removal rate achieved by manganese sand as a filter material.Quartz did a little worse than manganese sand,but other three filter material could not reach展开更多
文摘The pollution of iron,manganese and nitrate in groundwater is a huge threat to human beings.In this study,column experiments of ceramic,manganese sand,ceramic sand,volcanic rock,quartz sand were conducted.Iron and manganese contents of influent were 3.3 mg/L and 2.1 mg/L.When the biofilm became mature,the highest iron and manganese removal rate achieved by manganese sand as a filter material.Quartz did a little worse than manganese sand,but other three filter material could not reach
