S.I. Pérez-Elvira

TL;DR: In this article, the effect of thermal and sonication pre-treatment on the degradation of sewage sludge was evaluated through the calculation of performance parameters by using three simplified mathematical models and one kinetic model.

TL;DR: The results here obtained confirmed the lack of correlation between the solubilization degree and the methane enhancement potential and pointed out that anaerobic digestion of algae after thermal pretreatment is a promising technology for renewable energy production.

TL;DR: In this paper, the authors present the state-of-the-art of current minimisation techniques for reducing sludge production in biological wastewater treatment processes, considering three different strategies: the first option is to reduce the production of sludge by introducing in the wastewater treatment stage additional stages with a lower cellular yield coefficient compared to the one corresponding to the activated sludge process, and the second choice is to act on the sludge stage.

TL;DR: In this paper, a simple evaluation of energy consumption by pretreatments is made and it can be stated that unfortunately not all the pretreatment technologies have an energy self-sufficiency to be implemented in a WWTP, requiring many times a continuous energy investment.

TL;DR: The main goal of the present research was to compare the performance of TH and ATH, conducted at a wide range of operating conditions, as pretreatments of mesophilic AD with an emphasis on methane production enhancement as a key parameter and its connection with the sludge solubilization.