بیست و یکمین کنفرانس بین المللی انجمن هوافضای ایران
تاریخ برگزاری : 08 اسفند ماه 1401
زیست پالایی آرسنیک توسط لاکتوباسیلوس اسیدوفیلوس از آب در شرایط بی وزنی
مریم صلواتی فر , زهرا افشاریان , کیانوش خسروی دارانی
The pollution of water with heavy metal ions has generated great concern for public health due to the high toxicity, persistence, and non-degradability. Arsenic has been added to the list of heavy metals due to its carcinogenicity and toxicity. There is an emerging trend of employing microorganism s bioremediation of heavy metals, due to several benefits including their ability to heavy metal binding and arresting. Earth gravity is an influential physical force under which life appeared and developed. There are several reports about the effect of gravity removal on some characteristics of living organisms, including microorganisms. In this study bioremediation ability of Lactobacillus acidophilus for arsenic ions in water was evaluated. In addition, the effect of thermal and alkaline pretreatment of L. acidophilus on the amount of metal bioremediation was also investigated. Furthermore, simulated gastrointestinal effects were evaluated on stability of L. acidophilus-heavy metals complex. The results showed that L. acidophilus can bind to arsenic and reduce its concentration in water. In addition, it s ability for arsenic adsorption enhanced following heat-pretreatment in weightlessness as well as normal gravity. Furthermore, L. acidophilus ability for arsenic bioremediation was lower in weightlessness at first, but, the stability of the complex in simulated gastrointestinal conditions was higher in weightlessness compared to normal gravity. Thus, the results of our study support the idea of using bacteria to solve arsenic pollution
Arsenic, Heavy metal, weightlessness, Lactobacillus acidophilus
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, 1401 , زیست پالایی آرسنیک توسط لاکتوباسیلوس اسیدوفیلوس از آب در شرایط بی وزنی , بیست و یکمین کنفرانس بین المللی انجمن هوافضای ایران
تاریخ برگزاری : 08 اسفند ماه 1401