LAPSE:2021.0137
Published Article
LAPSE:2021.0137
Effect of Heavy Metals in the Performance of Anaerobic Digestion of Olive Mill Waste
Khalideh Al bkoor Alrawashdeh, Eid Gul, Qing Yang, Haiping Yang, Pietro Bartocci, Francesco Fantozzi
March 24, 2021
This study presents an investigation on the effect of heavy metals on the production of biogas during the process of anaerobic digestion (AD) of olive mill waste (OMW). The poisonous effect and the inhibitory influence of Fe, Ni, Pb, Zn, Cu, and Cr on the digestion process are investigated and determined. Biomethanation potential tests are performed for this sake. Adding some of the heavy metals to the AD decreases the efficiency of biogas production and methane concentration and decreases the reduction in the VS, the TCOD, the SCOD, and the organic acid load. A critical increase in the total organic acid and inhibition of methanogenic bacteria was observed due to its toxicity. The toxicity of the heavy metals can be arranged according to increasing order: Cu > Ni > Pb > Cr > Zn > Fe, which leads to rapid poisoning of the active microorganisms. Iron may also exhibit stimulatory effects, but with a low rate and at a certain level. The conclusions of this work are important for the industry and help to understand how to carefully manage the presence of heavy metals in the digestate.
Keywords
biogas, biomethanation potential, food industry, toxicity, wastewaters
Suggested Citation
Alrawashdeh KAB, Gul E, Yang Q, Yang H, Bartocci P, Fantozzi F. Effect of Heavy Metals in the Performance of Anaerobic Digestion of Olive Mill Waste. (2021). LAPSE:2021.0137
Author Affiliations
Alrawashdeh KAB: Mechanical Engineering Department, Al-Huson University College, Al-Balqa Applied University, P.O. Box 50, Al-Huson, Irbid 19117, Jordan [ORCID]
Gul E: Biomass Research Centre, University of Perugia, Strada Santa Lucia Canetola, 06125 Perugia, Italy
Yang Q: China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China; Department
Yang H: China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China; Department
Bartocci P: Department of Industrial Engineering, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy [ORCID]
Fantozzi F: Department of Industrial Engineering, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy
Journal Name
Processes
Volume
8
Issue
9
Article Number
E1146
Year
2020
Publication Date
2020-09-14
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8091146, Publication Type: Journal Article
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LAPSE:2021.0137
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doi:10.3390/pr8091146
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Mar 24, 2021
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Mar 24, 2021
 
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Mar 24, 2021
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Calvin Tsay
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