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Identification and Evaluation of Heterophobic Phosphate-Solubilizing Potential Metal Resistant Bacterium Isolated from Linz-Donawitz Slag

机译:从林茨-多纳威兹炉渣中分离出的可溶化磷酸盐的潜在抗金属细菌的鉴定和评估

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Linz-Donawitz (LD) slag which is a waste product of steel industry causes great disposal problem. The high concentration of calcium oxide (CaO) in the slag can partially substitute the use of limestone as a flux material in blast furnace, provided that the phosphorous (P) content of the slag can be reduced below 0.5 %. Here an attempt was made to study the phosphate solubilizing property of a bacterium, isolated from 30 days old LD slag enriched with vermi-compost (VC-1) which could solubilize 79.5% of phosphorous at 5% (w/v). Micro X-Ray Fluorescence Spectrophotometer (ED-XRF) study revealed that the isolated Bacillus sp. reduced 67.5% of total chromium, maintaining concentration of CaO, indicating that the treated LD slag could be re-used in steel processing industry. As the supernatant generated after phosphate removal was useful for seed germination which indicate that VC-1 was an effective strain in waste management in steel industry.
机译:林茨-多纳维兹(LD)渣是钢铁行业的废品,造成了巨大的处置问题。炉渣中高浓度的氧化钙(CaO)可以部分替代石灰石作为高炉中的助熔剂,前提是炉渣中的磷(P)含量可以降低到0.5%以下。这里尝试研究一种细菌的磷酸盐增溶性能,该细菌是从30天龄的富含蠕虫堆肥(VC-1)的LD炉渣中分离出来的,该渣可以以5%(w / v)的浓度溶解79.5%的磷。微型X射线荧光分光光度计(ED-XRF)研究表明分离出芽孢杆菌。减少了总铬的67.5%,保持了CaO的浓度,表明处理过的LD炉渣可以在钢铁加工工业中重复使用。由于去除磷酸盐后产生的上清液可用于种子发芽,这表明VC-1是钢铁行业废物管理中的有效菌株。

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