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Title

Investigating the reduction of BTEX in automotive paint sludge combined with biological sludge by vermicomposting process using Eisenia fetida

Year: 1399
COI: JR_EHEM-8-2_004
Language: EnglishView: 86
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Authors

Rahman Ghomi Avili - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
Afshin Takdastan - Corresponding author: Environmental Technologies Research Center, Jundishapur University of Medical Sciences, Ahvaz, Iran
Farideh Atabi - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
Ghasem Ali Omrani - Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract:

Background: Due to the fact that in the process of car painting in the automotive industry, sludge containing dangerous compounds of benzene, toluene, ethylbenzene, xylene which cannot be released into the environment without purification, is inevitably produced, this study was conducted to investigate the feasibility of removing BTEX (benzene, toluene, ethylbenzene, and xylene) from the paint sludge of Saipa Automotive Company using Eisenia fetida worms. Methods: This is an experimental study. First, mixtures with different proportions of sludge were prepared and loaded in suitable boxes. After preparing the desired sludge, their quantitative and qualitative characteristics were determined in terms of type and amount of BTEX, volatile materials, moisture content, and C/N ratio. Then, to check the changes in BTEX, sampling was performed on different days during ۹۰ days. BTEX measurements were performed using GC-MS method (NIOSH Method ۱۵۰۱). Results: The results showed that in the best mixing ratio of sludge, the amount of benzene decreased from ۳ mg to less than ۰.۰۱ mg in ۳۰ days, toluene decreased from ۱.۵ mg to zero over a ۴۵-day period, ethyl benzene was reduced from ۷ mg to zero mg over ۷۰ days, and xylene decreased from ۱۸ mg to ۰.۹ mg over ۹۰ days. In addition, in the same optimal mixing ratio, the amount of volatile organic matter, pH, and C/N ratio also had a decreasing trend in the vermicomposting process. Conclusion: According to the results, E. fetida worms are able to work in mixed sludge and have the ability to break down BTEX.

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This Paper COI Code is JR_EHEM-8-2_004. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1221163/

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Ghomi Avili, Rahman and Takdastan, Afshin and Atabi, Farideh and Omrani, Ghasem Ali,1399,Investigating the reduction of BTEX in automotive paint sludge combined with biological sludge by vermicomposting process using Eisenia fetida,https://civilica.com/doc/1221163

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Type of center: Azad University
Paper count: 38,379
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