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Open AccessArticle

Enhancement of Biogas Production from Macroalgae Ulva latuca via Ozonation Pretreatment

1
Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
2
Advanced Technology and New Materials Research Institute, City for Scientific Research and Technological Applications, Alexandria 21934, Egypt
3
Department of Agriculture and Environmental Sciences, Bari University, 70121 Bari, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Riccardo Amirante
Energies 2021, 14(6), 1703; https://doi.org/10.3390/en14061703
Received: 20 February 2021 / Revised: 13 March 2021 / Accepted: 15 March 2021 / Published: 18 March 2021
One of the dominant species of green algae growing along the Mediterranean coast of Egypt is Ulva lactuca. Pretreatment can have a major effect on biogas production because hydrolysis of the algae cell wall structure is a rate-limiting stage in the anaerobic digestion (AD) process. The use of ozone, a new pretreatment, to boost biogas production from the green algae Ulva lactuca was investigated in this study. Ozonation at various dosages was used in contrast to untreated biomass, and the effect on the performance of subsequent mesophilic AD using two separate inoculums (cow manure and activated sludge) was examined. The findings indicated that, in different studies, ozonation pretreatment showed a substantial increase in biogas yield relative to untreated algae. With an ozone dose of 249 mg O3 g–1 VS algal for Ulva lactuca, the highest biogas output (498.75 mL/g VS) was achieved using cow manure inoculum. The evaluation of FTIR, TGA, SEM, and XRD revealed the impact of O3 on the structure of the algal cell wall and integrity breakage, which was thus established as the main contributor to improving the biogas production. View Full-Text
Keywords: Ulva lactuca; ozone; treatment; biogas; kinetic models; modified Gompertz model; logistic function model Ulva lactuca; ozone; treatment; biogas; kinetic models; modified Gompertz model; logistic function model
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MDPI and ACS Style

Hassaan, M.A.; El Nemr, A.; Elkatory, M.R.; Eleryan, A.; Ragab, S.; El Sikaily, A.; Pantaleo, A. Enhancement of Biogas Production from Macroalgae Ulva latuca via Ozonation Pretreatment. Energies 2021, 14, 1703. https://doi.org/10.3390/en14061703

AMA Style

Hassaan MA, El Nemr A, Elkatory MR, Eleryan A, Ragab S, El Sikaily A, Pantaleo A. Enhancement of Biogas Production from Macroalgae Ulva latuca via Ozonation Pretreatment. Energies. 2021; 14(6):1703. https://doi.org/10.3390/en14061703

Chicago/Turabian Style

Hassaan, Mohamed A.; El Nemr, Ahmed; Elkatory, Marwa R.; Eleryan, Ahmed; Ragab, Safaa; El Sikaily, Amany; Pantaleo, Antonio. 2021. "Enhancement of Biogas Production from Macroalgae Ulva latuca via Ozonation Pretreatment" Energies 14, no. 6: 1703. https://doi.org/10.3390/en14061703

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