بررسی کارایی پوست انار در حذف نیکل و کروم از پساب صنعتی و طراحی آزمایش به روش سطح پاسخ
محورهای موضوعی : میکروبیولوژی مواد غذایی
نسرین هاشمی
1
(دانشجوی کارشناسی ارشد مهندسی علوم و صنایع غذایی، واحد علوم و تحقیقات، دانشگاه آزاد اسالمی، تهران، ایران)
مسعود هنرور
2
(دانشیار گروه علوم و مهندسی صنایع غذایی، واحد علوم و تحقیقات، دانشگاه آزاد اسالمی، تهران، ایران)
الهه قره خانی
3
(استادیار گروه شیمی، واحد ساوه، دانشگاه آزاد اسلامی، استان مرکزی، ایران)
کلید واژه: واژه های کلیدی: آلودگی, فلزات سنگین, پوست انار, فاضلاب, جذب,
چکیده مقاله :
چکیده آلودگی آب با فلزات سنگین سمی در اثر تخلیه فاضلاب صنعتی یک مشکل زیست محیطی در سراسر جهان است. حذف فلزات سنگین از پساب صنعتی موضوعی قابل توجه در زمینه آلودگی آب است که یک معضل جدی در کاهش کیفیت آب می باشد. فلزات متعددی مانند نیکل، کادمیوم، کروم، کبالت، مس، سرب، جیوه و روی به میزان قابل توجهی سمی می باشند. هدف از این مطالعه بررسی تاثیر پوست انار به عنوان یک جاذب ارزان قیمت در حذف فلزات نیکل و کروم می باشد. پوست های انار ابتدا با محلول سود 1/0 نرمال اصلاح شد و توانایی جذب بررسی گردید. تاثیر سود بر روی جاذب توسط تکنیک های CHN، FT-IR، و SEM مورد بررسی و ارزیابی قرار گرفت. نتایج نشان داد که اصلاح جاذب با سود در حذف یون‌های کروم و نیکل از پساب صنعتی موثر بوده است. آزمایشات جذب در غلظت های مختلف جاذب، زمان، دما و pH های مختلف انجام گرفت. تجزیه و تحلیل دادهها نشان میدهد که شرایط بهینه برای یون نیکل (II) g/L 4.5 از جاذب، 6pH=، دما308.15 K و زمان 60 دقیقه و شرایط بهینه برای یون کروم (VI)، g/L 4 از جاذب، 5.5pH= ، دمای300.65K و زمان 100 دقیقه می باشد. تحقیقات صورت گرفته و نتایج حاصل از آن با توجه به مزایای بالقوه، استفاده از این جاذب به عنوان جاذب زیستی جهت حذف نیکل و کروم در پساب صنعتی را به عنوان چشم اندازی امیدوار کننده و دوستدار محیط زیست پیشنهاد می کند. واژه های کلیدی: آلودگی، فلزات سنگین، پوست انار، فاضلاب، جذب
Abstract Water pollution with toxic heavy metals due to industrial wastewater discharge is a global environmental issue. The removal of heavy metals from industrial effluents is a significant concern in the field of water pollution and a serious challenge in reducing water quality. Multiple metals such as nickel, cadmium, chromium, cobalt, copper, lead, mercury, and zinc are notably toxic. The aim of this study is to investigate the impact of pomegranate peel as a cost-effective adsorbent in removing nickel and chromium metals. Pomegranate peels were initially treated with a 0.1 N sulfuric acid solution, and their adsorption capacity was examined. The effect of sulfuric acid on the adsorbent was assessed using CHN, FT-IR, and SEM techniques. The results indicated that the modification of the adsorbent with sulfuric acid was effective in removing chromium and nickel ions from industrial wastewater. Adsorption experiments were carried out at various adsorbent concentrations, times, temperatures, and pH levels. Data analysis revealed that the optimal conditions for nickel ions (II) are a concentration of 4.5 g/L of the adsorbent, pH 6, a temperature of 308.15 K, and a time of 60 minutes. The optimal conditions for chromium ions (VI) are a concentration of 4 g/L of the adsorbent, pH 5.5, a temperature of 300.65 K, and a time of 100 minutes. The research conducted and the results obtained suggest that, considering the potential benefits, the use of this adsorbent for the removal of nickel and chromium in industrial wastewater is a promising and environmentally friendly approach.
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