High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

doi:10.1016/j.cjche.2018.07.021

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (1): 208-217.DOI: 10.1016/j.cjche.2018.07.021

• Energy, Resources and Environmental Technology • 上一篇下一篇

High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

Mohd Nasrullah¹, A. W. Zularisam¹, Santhana Krishnan¹, Mimi Sakinah¹, Lakhveer Singh², Yap Wing Fen³

1 Faculty of Engineering Technology, Universiti Malaysia Pahang(UMP), Lebuhraya Tun Razak, Gambang, 26300 Kuantan, Pahang, Malaysia;
2 Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97333, USA;
3 Department of Physics, Faculty of Science, Universiti Putra Malaysia(UPM), Serdang 43400, Selangor, Malaysia

收稿日期:2017-10-17 修回日期:2018-06-09 出版日期:2019-01-28 发布日期:2019-01-31
通讯作者: A. W. Zularisam
基金资助:
Supported by Universiti Malaysia Pahang Research Grant (RDU1803143).

High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

Mohd Nasrullah¹, A. W. Zularisam¹, Santhana Krishnan¹, Mimi Sakinah¹, Lakhveer Singh², Yap Wing Fen³

1 Faculty of Engineering Technology, Universiti Malaysia Pahang(UMP), Lebuhraya Tun Razak, Gambang, 26300 Kuantan, Pahang, Malaysia;
2 Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97333, USA;
3 Department of Physics, Faculty of Science, Universiti Putra Malaysia(UPM), Serdang 43400, Selangor, Malaysia

Received:2017-10-17 Revised:2018-06-09 Online:2019-01-28 Published:2019-01-31
Contact: A. W. Zularisam
Supported by:
Supported by Universiti Malaysia Pahang Research Grant (RDU1803143).

摘要/Abstract

摘要： Electrocoagulation process using high current intensity to treat palm oil mill effluent (POME) was investigated in this study. Various operating parameters such as electrolysis time, inter-electrode distance and initial pH were carried out to determine the efficient process condition on the removal of chemical oxygen demand (COD), biological oxygen demand (BOD) and suspended solids (SS). The highest treatment was achieved at 50 min with the removal efficiencies for COD, BOD and SS obtained as 85%, 83%, and 84%, respectively. More than 50 min treatment showed the fluctuated trends of removal efficiencies which can be considered insignificant. The application of higher current resulted in higher removals of organics while the gas bubbles also assisted in removing the pollutant particles by floatation. In an inter-electrode distance study, the removal efficiency decreased when inter-electrode distance was either higher or lower than 10 mm due to the increase of solution resistance and the decrease of anode active surface area. In initial pH study, it was found that high removal efficiencies were achieved in slightly acidic POME sample rather than in neutral or basic condition. An electrocoagulation process by using the optimum operating parameters was able to remove COD, BOD and SS up to 95%, 94% and 96% respectively. The experimental results confirm that application of high current intensity in electrocoagulation provided high treatment efficiency at a reduced reaction time.

关键词: Electrochemistry, Environment, Electrocoagulation, Palm oil mill effluent, High current intensity

Abstract: Electrocoagulation process using high current intensity to treat palm oil mill effluent (POME) was investigated in this study. Various operating parameters such as electrolysis time, inter-electrode distance and initial pH were carried out to determine the efficient process condition on the removal of chemical oxygen demand (COD), biological oxygen demand (BOD) and suspended solids (SS). The highest treatment was achieved at 50 min with the removal efficiencies for COD, BOD and SS obtained as 85%, 83%, and 84%, respectively. More than 50 min treatment showed the fluctuated trends of removal efficiencies which can be considered insignificant. The application of higher current resulted in higher removals of organics while the gas bubbles also assisted in removing the pollutant particles by floatation. In an inter-electrode distance study, the removal efficiency decreased when inter-electrode distance was either higher or lower than 10 mm due to the increase of solution resistance and the decrease of anode active surface area. In initial pH study, it was found that high removal efficiencies were achieved in slightly acidic POME sample rather than in neutral or basic condition. An electrocoagulation process by using the optimum operating parameters was able to remove COD, BOD and SS up to 95%, 94% and 96% respectively. The experimental results confirm that application of high current intensity in electrocoagulation provided high treatment efficiency at a reduced reaction time.

Key words: Electrochemistry, Environment, Electrocoagulation, Palm oil mill effluent, High current intensity

Mohd Nasrullah, A. W. Zularisam, Santhana Krishnan, Mimi Sakinah, Lakhveer Singh, Yap Wing Fen. High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application[J]. Chinese Journal of Chemical Engineering, 2019, 27(1): 208-217.

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High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

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