Investigating the amount of Soluble COD Removal from Wastewater Containing Olive Oil Using Electrocoagulation: A Study of Kinetic Models
Journal Title: Journal of Health Research in Community - Year 2019, Vol 5, Issue 3
Abstract
Introduction and purpose: The olive oil industry wastewater contains significant amounts of oil and this can cause serious problems if it is discharged into the wastewater treatment system, so the oil in the wastewater must be removed and seperated prior to any action. Therefore, the oil in the sewage should be removed and separated prior to taking any measure. There are several ways to remove oil. According to the above, in the present study, the efficiency of the electro coagulation process in reducing soluble COD synthetic wastewater containing olive oil was investigated. Methods: In this study, iron and galvanized electrodes were used. Firstly, the optimum values of current density, initial pH, and electrolyte concentration were determined. Thereafter, the effect of time variations on electrode corrosion, voltage, decreased COD concentration, and energy consumption was investigated. The kinetics of Grade 1, Grade 2, and WeberMorris were also investigated for two electrodes. Results: The maximum removal efficiency of soluble COD was obtained at 99% for iron and galvanized electrodes at a current density of 12.5 mA/cm 2, electrolyte concentration of 400 mg / l, initial pH 7, and reaction time. The electrical energy consumption in these conditions for these two electrodes was measured at 28.5 and 46.25 KWhr/m3, respectively. Finally, kinetics models, including pseudo-first-order, pseudo-second-order, and Weber Morris, were investigated for these two electrodes. The results revealed that the highest correlation coefficient for both electrodes was related to the pseudo-second-order model. Conclusion: Although galvanized electrode is more efficient in the reduction of soluble COD concentration, as compared to iron electrode, it consumes more electrical energy. Therefore, the type of electrode must be selected according to the purpose.
Authors and Affiliations
Mina Ghahrchi,Amir Adibzadeh,Abbas Rezaee,
Keywords
Related Articles
- EP ID EP701729
- DOI -
- Views 45
- Downloads 0
برآورد تعداد موارد مرگ ناشی از بیماری های قلبی - عروقی و تنفسی منتسب به آلاینده‌های ازن و دی اکسید نیـتروژن در هوای شهر تهران
مقدمه و هدف: امروزه یکی از مهم ترین مشکلات زیست محیطی در بسیاری از شهرهای بزرگ، وضعیت نامطلوب کیفیت هوا میباشد که سلامت ساکنین را به طور جدی به خطر می اندازد و موجب ایجاد طیف وسیعی از اثرات بهداشتی حاد و مزمن میشود. از ا...
The effect of 8 weeks of Strenuous Endurance Training on Heme oxygenase-1 and TNF-α in Gastrocnemius and Soleus muscle Tissue of male Wistar rats
Background and Objectives: Oxidative stress from exercise, either injured muscles and reduces performance in athletes, or stimulates the production of cytokines from many cells. body respond to oxidative stress by activa...
The Impact of Gender Inequality and Good Governance on Health Status: Evidence from Upper-middle-income Countries
Introduction and purpose: Gender equality and good governance are the most important social indicators affecting health status and well-being. Therefore, the present study aimed to investigate the impact of gender inequa...
بررسی سطح کیفیت اقدامات براساس مدل مالکوم بالدریج در بیمارستان شهید رجایی تنکابن
مقدمه و هدف: ارزیابی کیفیت اقدامات سازمان‌ها نقش مؤثری در رضایتمندی مخاطبان به خصوص در بیمارستان‌ها به عنوان ارائه‌دهنده خدمات بهداشتی-درمانی دارد. در این راستا پژوهش حاضر با هدف بررسی سطح کیفیت اقدامات بیمارستان شهید رج...
بررسی میزان شیوع و علل غیبت از کار پزشکی در میان کارکنان شبکه بهداشت شهرستان جویبار در سال 1394
مقدمه و هدف: حضورنداشتن در محل کار به هر علتی، غیبت از کار تلقی می شود. غیبت های پزشکی می تواند به طور جدی تأثیر منفی بر عملکرد سازمان داشته باشد. مطالعه حاضر، به منظور بررسی شیوع و علل غیبت پزشکی در بین کارکنان شبکه بهد...