一株銅綠假單胞菌的溶磷特征及其對底泥中Pb的固定化
發(fā)布時間:2018-09-07 10:58
【摘要】:通過純培養(yǎng)和模擬實驗研究一株銅綠假單胞菌JM1對磷酸鈣的溶解特征及其對底泥中Pb的固定化作用.結(jié)果表明:菌株JM1對磷酸鈣和磷酸鋁均具有溶解作用,96h內(nèi)釋放的溶解性正磷酸鹽的質(zhì)量濃度分別為240.63,92.73mg/L,培養(yǎng)液pH值分別下降至4.64,5.12,菌株JM1還可以利用卵磷脂進行生長但不釋放磷酸根離子;菌株JM1使滅菌底泥與不滅菌底泥中固定化Pb的質(zhì)量比分別增加至14.02,11.83mg/kg,即菌株JM1對底泥中的Pb具有較強的固定能力.
[Abstract]:The dissolution of calcium phosphate by Pseudomonas aeruginosa JM1 and its immobilization of Pb in sediment were studied by pure culture and simulated experiments. The results showed that the mass concentration of dissolved orthophosphate released by strain JM1 in 96 h was 240.63t92.73mg / L, and the pH value of culture medium decreased to 4.64n5.12.The strain JM1 could also use lecithin to grow. However, phosphate ion was not released. Strain JM1 increased the mass ratio of immobilized Pb in sterilized sediment and non-sterilized sediment to 14.02 mg / kg, respectively. That is to say, strain JM1 had strong fixation ability to Pb in sediment.
【作者單位】: 吉林農(nóng)業(yè)大學資源與環(huán)境學院;華中科技大學環(huán)境科學與工程學院;
【基金】:國家自然科學基金(批準號:51109089) 吉林省科技發(fā)展計劃項目(批準號:20130206031NY;20160204025SF)
【分類號】:X52;X172
[Abstract]:The dissolution of calcium phosphate by Pseudomonas aeruginosa JM1 and its immobilization of Pb in sediment were studied by pure culture and simulated experiments. The results showed that the mass concentration of dissolved orthophosphate released by strain JM1 in 96 h was 240.63t92.73mg / L, and the pH value of culture medium decreased to 4.64n5.12.The strain JM1 could also use lecithin to grow. However, phosphate ion was not released. Strain JM1 increased the mass ratio of immobilized Pb in sterilized sediment and non-sterilized sediment to 14.02 mg / kg, respectively. That is to say, strain JM1 had strong fixation ability to Pb in sediment.
【作者單位】: 吉林農(nóng)業(yè)大學資源與環(huán)境學院;華中科技大學環(huán)境科學與工程學院;
【基金】:國家自然科學基金(批準號:51109089) 吉林省科技發(fā)展計劃項目(批準號:20130206031NY;20160204025SF)
【分類號】:X52;X172
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