A Study of Efficiency of Zero-valent Iron Nanoparticles in Degradation of Trichlorethylene from Aqueous Solutions
Journal Title: Journal of Health Research in Community - Year 2016, Vol 2, Issue 3
Abstract
Introduction and purpose: The release of chlorinated organic compounds (COCs) is accounted as a danger for public health and environment due to their harmful effects such as carcinogenicity, toxicity, and flammability. Trichlorethylene (TCE) is one of the most famous COCs, which is commonly used as a solvent for dry-cleaning and industrial degreasing and contaminates soil and groundwater. Thus, it is considered as a possible carcinogenic compound (class B2) for humans. Therefore, this study was to evaluate the effect of zerovalent iron nanoparticles (nZVI) in degradation of TCE. Methods: Iron nanoparticles were prepared through the Ferric Chloride revival method by sodium borohydride. The properties of nanoparticles were determined using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometer. In addition, the effect of pH, concentration of trichloroethylene, iron nano-particle dosage, and contact time were studied on TCE removal efficiency. Box Behnken model was used to investigate the interaction of these variables. Analysis of variance was considered as the statistical method for analysis of responses. Results: Results showed that the degradation efficiency was equal to 91.23% in optimal conditions (pH=3, nanoparticles dose= 0.63 g/l, TCE concentration= 11 mg/l, and contact time= 86 min). The results of kinetic studies revealed that TCE degradation by nZVI follows first-order kinetic model. Conclusion: It is conclude that zero-valent iron nanoparticles have a good efficiency in the degradation of TCE. On the other hand, separation of these nanoparticles is simple due to its magnetism properties, which can improve the use of these nanoparticles.
Authors and Affiliations
Samaneh Dehghan, Roshanak Rezaei Kalantari, Ali Azari, Sahram Nazari
Keywords
Related Articles
- EP ID EP638562
- DOI -
- Views 187
- Downloads 0
Study of Efficiency of Photochemical Oxidation Process with UV/Peroxidisulfate for Removal of Alizarin Red S from Aqueous Solutions
Introduction and purpose: Treatment of dye wastewater produced by textile industries is a major challenge for the environment. About 15% of the total produced dyes in the world are released in sewages during dyeing activ...
بررسی رابطه بین غنی سازی شغلی و کیفیت زندگی کاری در اپراتورهای برق
مقدمه و هدف: یکی از زمین ههای ارتقاء کیفیت زندگی کاری کارکنان در سازما نها، غن یسازی شغلی م یباشد. در صورتی که غن یسازی مشاغل ب هدرستی انجام شود، کارکنان کیفیت بالایی از زندگی کاری را از خود نشان خواهند داد. از این رو در...
Risk Factors Assessment in Educational Equipment Manufacturers Company Using FMEA
Introduction and purpose: Industrial accidents are highly prevalent. Regarding this, identification of the risk factors of occupational accidents can be helpful in preventing the occurrence of this type of accidents. The...
Relationship between Religious Beliefs with Quality of Life and Resilience of Mothers with Children Suffering from Cancer
Introduction and purpose: The diagnosis of cancer in children is considered a crisis for the family causing some disturbances in the quality of life of parents. One of the best strategies to improve the quality of life i...
Investigation of Health-promoting Lifestyle and Psychological Status of Older Adults Living in Tabriz in 2021
Introduction and purpose: Investigation and recognition of the factors affecting the quality of life are essential to start the behavior, and continuing the behavior can be a key factor in improving the living conditions...