Enhanced methane production in a two-phase anaerobic digestion plant, after CO2 capture and addition to organic wastes.

Cost-effective technologies are needed to reach the international greenhouse gas (GHG) reduction targets in many fields, including waste and biomass treatment. This work reports the effects of CO(2) capture from a combustion flue gas and its use in a newly-patented, two-phase anaerobic digestion (TPAD) process, to improve energy recovery and to reduce CO(2) emissions. A TPAD process, fed with urban wastewater sludge, was successfully established and maintained for several months at pilot scale.

Chemical characterization of municipal wastewater sludges produced by two-phase anaerobic digestion for biogas production.

In the present study, the chemical features of municipal wastewater sludges treated in two-phase separate digesters (one for acetogenesis and the other one for methanogenesis), were characterized by using chemical analysis, stable carbon isotope ratios (delta(13)C), HS-SPME-GC-MS, TG-DTA analysis and DRIFT spectroscopy. The results obtained showed that sludges from acetogenesis and methanogenesis differed from each other, as well as from influent raw sludges. Both processes exhibited a diverse chemical pattern in term of VFA and VOC.

[Primary gastric lymphoma].

Primary gastric lymphoma (P.G.L.

[Technical considerations on 222 cases of esophageal anastomosis using a stapler].

The Authors report their experience with 222 esophagoenteric anastomoses, performed in 211 cases for malignant neoplasms (middle and lower third) of the esophagus or stomach. Particularly, they have performed 4 Sujura operations, 31 esophagogastric, 4 esophagocolic, 183 esophagojejunal anastomoses utilizing SPTU, ILS and EEA circular stapler. GIA was used in the preparation of the stomach before esophagogastroplasty.