Biomethane Potential of Invasive Aquatic Weed Water Primrose

Abstract

This study aims to examine the perspective of feedstock for producing biomethane from invasive aquatic weed water primroses (Ludwigia Hyssopifolia). The methane yield and methane content of biogas were analyzed and studied. The calculating methods of theoretical methane yield based on the elemental application or the theoretical chemical oxygen demand (COD) number were showed. The percentage of element chemicals, carbon (C), hydrogen (H), oxygen (O), nitrogen (N), and sulfur (S) of raw materials were analyzed, and results were 40.2%, 5.03%, 22.13%, 1.8% and 0.24%, respectively. The plant biomass was contained moisture content, volatile carbon, fixed carbon and ash were 7.28%, 63.07%, 1.28% and 28.37%, respectively. From the water primroses calculated yield of methane (CH4), carbon dioxide (CO2) and ammonia (NH3) results were 54.90%, 41.40% and 3.70%, respectively. Therefore, the aquatic weed water primroses biomass are suitable feedstock for biogas production as well as future scale-up studies.

Biogas production from Napier grass and cattle slurry using a green energy technology

“…In addition, there is virgin biomass, such as urban solid waste, municipal biosolids (sewage), animal wastes (manure), forestry and agricultural residues, and certain forms of industrial wastes. Biomass, unlike fossil fuels, is environmentally friendly since it takes only a short time to replace the energy source [8]. On a global scale, the energy capacity of biomass is immense.…”