کاربرد روش سطح پاسخ جهت بهينه‌سازي حذف رنگ مالاشيت سبز با نانو جاذب Cl-nZVI Application of Response Surface Methodology to Optimize Malachite Green Removal by Cl-nZVI Nanocomposites
Journal Title: آب و فاضلاب - Year 2017, Vol 28, Issue 4
Abstract
Application of Response Surface Methodology to Optimize Malachite Green Removal by Cl-nZVI Nanocomposites F. Ghorbani1, H. Molavi2, S. Fathi3, F. Piri3 1. Faculty Member of Environmental Engineering, Faculty of Natural Resources, Kurdistan University, Sanandaj (Corresponding Author) f.ghorbani@uok.ac.ir 2. MSc Student of Environmental Engineering, Faculty of Natural Resources, Kurdistan University, Sanandaj 3. BSc Student of Environmental Engineering, Faculty of Natural Resources, Kurdistan University, Sanandaj (Received Dec. 8, 2015 Accepted May, 1, 2016) Abstract Disposal of effluents containing dyes into natural ecosystems pose serious threats to both the environment and its aquatic life. Malachite green (MG) is a basic dye that has extensive industrial applications, especially in aquaculture, throughout the world. This study reports on the application of the central composite design (CCD) under the response surface methodology (RSM) for the optimization of MG adsorption from aqueous solutions using the clinoptilolite nano-zerovalence iron (Cl-nZVI) nanocomposites. The sorbent structures produced are characterized by means of scanning electron micrograph (SEM), energy-dispersive X-ray spectroscopy (EDS), and vibrating sample magnetometer (VSM). The effects of different parameters including pH, initial MG concentration, and sorbent dosage on the removal efficiency (R) of MG were studied to find the optimum operating conditions. For this purpose, a total of 20 sets of experiments were designed by the Design Expert.7.0 software and the values of removal efficiency were used as input response to the software. The optimum pH, initial MG concentration, and sorbent dosage were found to be 5.6, 49.21 mg.L-1, and 1.43 g.L-1, respectively. A high MG removal efficiency (57.90%) was obtained with optimal process parameters. Moreover, a desirability value of 0.963 was obtained for the optimization process.
Authors and Affiliations
Farshid Ghorbani, Hadieh Molavi, Somayyeh Fathi, Fatemeh Piry
Keywords
Related Articles
- EP ID EP243279
- DOI 10.22093/wwj.2017.44300
- Views 66
- Downloads 0
Mobility and Dispersion Optimization of Nano Zerovalent Iron (nZVI) in Disinfection of Urban Wastewater with Pneumatic Nitrogen Gas Injection بهينه‌سازي تحرک و پراکندگي نانو ذرات آهن صفر ظرفيتي در گندزدايي پساب شهري توسط تزريق پنوماتيک گاز نيتروژن
Abstract Zero iron nanoparticle is considered as a universal enhancement agent. Its stabilization in aqueous environments with different coatings, reduces the efficiency of nanoparticles to a great extent. This study ai...
بررسي حذف سورفکتانت آنيوني با استفاده از روش انعقاد و شناورسازي الکتريکي تک قطبي Investigation of Anionic Surfactant Removal Using Unipolar Electro-Flotation and Electro-Coagulation
Abstract Surfactants are considered as chemical combinations with many environmental impacts such as eutrophication, foam generation, and oxygen reduction. This experimental study is conducted to evaluate the removal of...
قابليت سيستم SBAR در حذف متيل ترشياري بوتيل اتر: مشخصات بيوگرانول‌ها
SBAR Capability for Methyl Tertiary Butyl Ether Removal: Characterization of the Bio-granules The growing use of MTBE as a substitute for Tetraethyl lead and its adverse impacts on the environment warrant its removal fro...
کارايي نانو لوله‌هاي کربني چند جداره اصلاح شده با عامل كيتوزان در حذف فلزات سنگين سرب، روي و کادميم از محيط‌هاي آبي Evaluation of the Removal of Heavy Metals (Cadmium Lead, and Zinc) from Aqueous Solutions using Multi-Walled Carbon Nanotubes Modified with Chitosan
Abstract Discharge of toxic metals such as cadmium (Cu), lead (Pb), and zinc (Zn) in the environment can impact the quality of air and water. High concentration of these toxic metals larger than the regulated concentra...
حذف آرسنيک در محيط آبي با روش اسمز معکوس و نانوذره آهن صفر ظرفيتي
Arsenic Removal Efficiency in Aqueous Solutions Using Reverse Osmosis and Zero-Valent Iron Nanoparticles Abstract Arsenic is one of the most hazardous pollutants of water resources which threaten human health as well as...