Profitability analysis of thermochemical processes for biomass-waste valorization: a comparison of dry vs wet treatments.

Herein pyrolysis, torrefaction and hydrothermal carbonization of olive tree pruning were compared from an economic perspective. For this economic comparison a hypothetical industrial plant of 1250 kg/h of capacity was selected, and the profitability analysis was performed through the discounted cash flow method. A baseline scenario was defined, which serves for basis of later comparison.

Optimizing hydrothermal carbonization of olive tree pruning: A techno-economic analysis based on experimental results.

In this study the optimization of the hydrothermal carbonization process for the conversion of olive tree pruning into biofuel is presented. To this end, a combined experimental-economic assessment is performed. Experimental data obtained at laboratory scale were used to estimate the economic performance of a hypothetical industrial scale plant.

A Comparison between Several Response Surface Methodology Designs and a Neural Network Model to Optimise the Oxidation Conditions of a Lignocellulosic Blend.

In this paper, response surface methodology (RSM) designs and an artificial neural network (ANN) are used to obtain the optimal conditions for the oxy-combustion of a corn-rape blend. The ignition temperature () and burnout index () were selected as the responses to be optimised, while the CO/O molar ratio, the total flow, and the proportion of rape in the blend were chosen as the influencing factors. For the RSM designs, complete, Box-Behnken, and central composite designs were performed to assess the experimental results.

Assessing the agronomic and environmental effects of the application of cattle manure compost on soil by multivariate methods.

Multivariate analysis was used for interpreting data from a pot experiment using samples of three Spanish soils. Samples of soil fertilized with compost were compared with untreated control samples. We also compared the effect of adding the compost to soil with a controlled moisture content of 50% of its water holding capacity (WHC), and to a near-saturated soil (95% WHC).