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首页> 外文期刊>Journal of water reuse and desalination >The metal binding potential of a dairy isolate
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The metal binding potential of a dairy isolate

机译：乳制品分离物的金属结合潜力

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Excess iron in water resources can lead to health hazards and problems. The ability of lactic acid bacteria to bind iron has not yet been widely studied. In the present study, sorption of iron ions from aqueous solutions onto lactic acid bacterium was determined. Elemental analyses were carried out by inductively coupled plasma optical emission spectrometry. The kinetics of Fe(III) biosorption was investigated at different initial concentrations of metal ion. The highest uptake capacity was found to be 16 mg of Fe(III) per gram of adsorbent with a contact time of 24 hr and at initial metal ion concentration of 34 mg/L. The uptake capacity of Fe(III) ion varied from 83.2 to 46.7% across the range of initial metal ion concentrations. The equilibrium data were evaluated by Langmuir and Freundlich isotherms, and were found to fit better with the latter (R-2 = 0.9999). The surface morphology of the biomass and percentage of metal was characterized by using a scanning electron microscope equipped with energy dispersive X-ray spectroscopy. The functional groups on the cell wall surface of biomass involved in biosorption of heavy metals were studied by Fourier transform infrared spectroscopy spectrum.
机译：水资源过剩的铁可以导致健康危害和问题。乳酸菌结合铁的能力尚未被广泛研究。在本研究中，测定将来自水溶液中的铁离子吸收到乳酸细菌中。通过电感耦合等离子体光发射光谱法进行元素分析。在不同初始金属离子浓度下研究了Fe（III）生物吸附的动力学。每克吸附剂的最高摄取容量被发现为16mg Fe（III），其接触时间为24小时，初始金属离子浓度为34 mg / L. Fe（III）离子的摄取能力在初始金属离子浓度范围内的83.2％至46.7％。通过Langmuir和Freundlich等温线评估均衡数据，并发现后者更好地适应（R-2 = 0.9999）。通过使用配备有能量分散X射线光谱的扫描电子显微镜，表征生物质和金属百分比的表面形态。通过傅里叶变换红外光谱光谱研究了参与重金属生物吸附的生物量的官能团的官能团。

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