作业帮英语翻译Cr(VI)是一种有毒的重金属,造成环境污染,利用生物法将Cr(VI)还原为低毒的Cr(III)已受到人们的广泛
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英语翻译
Cr(VI)是一种有毒的重金属,造成环境污染,利用生物法将Cr(VI)还原为低毒的Cr(III)已受到人们的广泛认可.但是生物法存在反应速率慢的问题,针对此问题,开展了氧化还原介体加速Cr(VI)生物还原的研究.具体情况如下：（1）筛选最优介体并优化其投加浓度；（2）六种影响因素（温度、pH、葡萄糖浓度、Cr(VI)浓度,溶解氧,共存离子）对还原体系的影响；（3）Cr(VI)生物还原过程中,pH,OD及氧化还原电位的测定.实验结果表明,五种介体中AQS加速效果最为明显,随介体浓度的增加,Cr(VI)去除率越大；在六种影响因素中,Cr(VI)还原随温度升高而增大,随葡萄糖、Cr(VI)浓度、溶解氧的增大而降低,共存离子中Ca2+、Mg2+、SO32-加速了Cr(VI)的还原；在Cr(VI)的还原过程中,体系的pH与浊度均逐渐增大.
Cr(VI)是一种有毒的重金属,造成环境污染,利用生物法将Cr(VI)还原为低毒的Cr(III)已受到人们的广泛认可.但是生物法存在反应速率慢的问题,针对此问题,开展了氧化还原介体加速Cr(VI)生物还原的研究.具体情况如下：（1）筛选最优介体并优化其投加浓度；（2）六种影响因素（温度、pH、葡萄糖浓度、Cr(VI)浓度,溶解氧,共存离子）对还原体系的影响；（3）Cr(VI)生物还原过程中,pH,OD及氧化还原电位的测定.实验结果表明,五种介体中AQS加速效果最为明显,随介体浓度的增加,Cr(VI)去除率越大；在六种影响因素中,Cr(VI)还原随温度升高而增大,随葡萄糖、Cr(VI)浓度、溶解氧的增大而降低,共存离子中Ca2+、Mg2+、SO32-加速了Cr(VI)的还原；在Cr(VI)的还原过程中,体系的pH与浊度均逐渐增大.
Cr (VI) is a toxic heavy metal, causing environmental pollution, using biological methods to Cr (VI) revert to the low toxic Cr (III) has been widely recognized. But the biological reaction rate slow problem, for this issue, a redox mediator accelerate Cr (VI) biological reduction research. Specified below: (1) filter the best mediator and optimize the dosage levels, (2) six impact factors (temperature, pH, glucose concentration, Cr (VI) concentrations of dissolved oxygen, and coexisting ions) for restoring a system, (3) Cr (VI) biological reduction process, the pH,OD and measurement of the redox potential. Experiment results indicates that, five species between body in the AQS accelerated effect most obviously, with between body concentration of increased, Cr (VI) removal rate more large; in six species effect factors in the, Cr (VI) restore with temperature rise and increases, with glucose, and Cr (VI) concentration, and dissolved oxygen of increases and reduced, coexistence ion in the Ca2+, and Mg2+, and SO32-accelerated has Cr (VI) of restore; in Cr (VI) of restore process in the, system of pH and turbidity are gradually increases.