Recovery of microelements from municipal sewage sludge by reed canary grass and giant miscanthus.

The aim of the study was to evaluate the content, uptake, and utilization of Al, Mn, Fe, Co, and Mo from municipal sewage sludge by the reed canary grass (RCG) and the giant miscanthus (MG). The impact of sewage sludge on the mass ratios between microelements contained in the plant biomass was analyzed as well. The long-term field experiment consisted in application of four levels of fertilization with sewage sludge: 10, 20, 40, and 60 Mg DM·ha.

Effect of different nitrogen fertilizer treatments on the conversion of Miscanthus×giganteus to ethanol.

Miscanthus×giganteus is a perennial rhizomatous grass which is used as a biofuel crop. Due to its high yields, low production costs, resistance to low temperatures, low soil requirements and, above all, high cellulose content, miscanthus can be a useful resource for ethanol production. The aim of this study was to determine the effect of two fertilization regimes (sewage sludge/mineral NPK) during miscanthus cultivation on the chemical composition of biomass, the content of major lignocellulosic factions and the effectiveness of miscanthus conversion to bioethanol.

Theoretical and observed biogas production from plant biomass of different fibre contents.

The methane productivity of silage of four crop species -Zeamays L., Sorghumsaccharatum, Miscanthusxgiganteus and Miscanthussacchariflorus - was investigated. The experiments revealed that at a hydraulic retention time of 60days the volumetric methane yields from the Z.