Enhancement of Biogas Production from Macroalgae Ulva latuca via Ozonation Pretreatment

Mohamed A. Hassaan, Ahmed El Nemr, Marwa R. Elkatory, Ahmed Eleryan, Safaa Ragab, Amany El Sikaily and Antonio Pantaleo
Additional contact information
Mohamed A. Hassaan: Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
Ahmed El Nemr: Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
Marwa R. Elkatory: Advanced Technology and New Materials Research Institute, City for Scientific Research and Technological Applications, Alexandria 21934, Egypt
Ahmed Eleryan: Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
Safaa Ragab: Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
Amany El Sikaily: Marine Pollution Laboratory, National Institute of Oceanography and Fisheries, Alexandria 21556, Egypt
Antonio Pantaleo: Department of Agriculture and Environmental Sciences, Bari University, 70121 Bari, Italy

Energies, 2021, vol. 14, issue 6, 1-16

Abstract: 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 O 3 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 O 3 on the structure of the algal cell wall and integrity breakage, which was thus established as the main contributor to improving the biogas production.

Keywords: Ulva lactuca; ozone; treatment; biogas; kinetic models; modified Gompertz model; logistic function model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/6/1703/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/6/1703/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:6:p:1703-:d:519974

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().