Energy and Nutrients from Apple Waste Using Anaerobic Digestion and Membrane Technology.

The worldwide increment of food waste requires innovative management solutions, aligned with sustainability, energy, and food security. Anaerobic digestion (AD), followed by nutrient recovery, may be considered an interesting approach. This study proposed a co-digestion of apple pomace (AP) with swine manure (SM) to study the effect of different proportions of AP (0, 7.

Improved anaerobic digestion of swine manure by simultaneous ammonia recovery using gas-permeable membranes.

In feedstocks containing high ammonia (NH) concentration, removal of the NH during the anaerobic digestion (AD) process can improve AD process performance. In the present study, the effect of NH removal using gas-permeable membrane (GPM) technology on AD process performance and biogas production was investigated using swine manure feedstock. Batch and semi-continuous AD experiments were carried out under mesophilic conditions.

Pilot-Scale Demonstration of Membrane-Based Nitrogen Recovery from Swine Manure.

Gas-permeable membranes technology presents a high potential for nitrogen (N) recovery from wastewaters rich in ammonia (NH). The EU project Ammonia Trapping (AT) is aimed at transferring knowledge from the lab-scale level to on-farm pilot-scale level, using this technology to recover NH from livestock wastewaters. The goal of this study is to report the results of an on-farm pilot-scale demonstration plant using gas-permeable membranes to recover N from raw swine manure.

Biofuels from microalgae: lipid extraction and methane production from the residual biomass in a biorefinery approach.

Renewable fuels and energy are of major concern worldwide and new raw materials and processes for its generation are being investigated. Among these raw materials, algae are a promising source of lipids and energy. Thus, in this work four different algae have been used for lipid extraction and biogas generation.