Thalassic biogas production from sea wrack biomass using different microbial seeds: Cow manure, marine sediment and sea wrack-associated microflora

► First report on sea wrack biomass utilization for biogas production in the Philippines. ► Biogas production of sea wrack is possible using seawater as liquid substrate. ► Marine sediment proved to be the most appropriate microbial seed used. ► Island communities, where freshwater are scarce, could be helped by this technology.