Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Benzene-Contaminated Groundwater Remediation by Modified Fenton

Document Type : Research Article

Authors
Hamid Mosmeri
Ebrahim Alaee
Mahmood Shavandi
Seyed Mohammad Mehdi Dastgheib
Saeideh Tasharrofi
Environment and Biotechnology Division, Research Institute of Petroleum Industry (RIPI), Tehran, I.R. IRAN
Abstract
Petroleum hydrocarbon contamination of groundwater has become a widespread environmental issue in developing countries. In recent years, various technologies have been applied to remediate petroleum pollutants from groundwater, such as Modified Fenton (MF). In the present study, treatment of benzene-contaminated groundwater is investigated. In the first step of the experiments, calcium peroxide nanoparticles were synthesized, then encapsulated using sodium alginate. Moreover, application of synthesized capsules in benzene removal from groundwater was evaluated in batch and column studies. In the batch experiments, 50 mg/L of benzene was removed completely within 70 days. Whereas, the pollution removal reached 100% after 4 days in the column experiments. In addition, the dissolved oxygen of the reactor with CaO2 capsules raised from 4 to 6 mg/L. The microbial count was increased to 106 CFU/mL, while the blank experiment was approximately 106 CFU/mL. Consequently, the results showed high efficiency and appropriate performance for encapsulated calcium peroxide nanoparticles for remediation of benzene from groundwater.
Keywords
Modified Fenton
Calcium peroxide
CaO2
Groundwater remediation
Petroleum pollution of water
Oxygen releasing compounds

Subjects

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