Metagenomic analysis and performance of a mesophilic anaerobic reactor treating food waste at various load rates.

The performance of a demonstration-scale anaerobic reactor treating food waste was evaluated with an emphasis on microbial response to increasing organic loading rates (OLRs). The reactor exhibited a stable performance in terms of methane yield at OLR ranging from 1.0 to 2.

Lymph node micrometastases in initial stage cervical cancer and tumoral recurrence.

Objective: To evaluate the prevalence of micrometastases in lymph node tissue of patients with stage Ib1-IIA cervical cancer, the correlation of micrometastases with tumor recurrence and survival, and the expression of D2-40 in the primary tumor of patients with recurrence and/or micrometastases and its correlation with histopathologic findings.

Methods: In a retrospective study, the medical records of all patients with cervical cancer treated at a hospital in São Paulo, Brazil, between 2001 and 2007 were reviewed. Patients with no lymph node metastases and treated with radical hysterectomy without adjuvant treatment were included.

Prokaryotic diversity and dynamics in a full-scale municipal solid waste anaerobic reactor from start-up to steady-state conditions.

The prokaryotic diversity of an anaerobic reactor for the treatment of municipal solid waste was investigated over the course of 2 years with the use of 16S rDNA-targeted molecular approaches. The fermentative Bacteroidetes and Firmicutes predominated, and Proteobacteria, Actinobacteria, Tenericutes and the candidate division WWE1 were also identified. Methane production was dominated by the hydrogenotrophic Methanomicrobiales (Methanoculleus sp.

Anaerobic co-digestion of the organic fraction of municipal solid waste with FOG waste from a sewage treatment plant: recovering a wasted methane potential and enhancing the biogas yield.

Anaerobic digestion is applied widely to treat the source collected organic fraction of municipal solid wastes (SC-OFMSW). Lipid-rich wastes are a valuable substrate for anaerobic digestion due to their high theoretical methane potential. Nevertheless, although fat, oil and grease waste from sewage treatment plants (STP-FOGW) are commonly disposed of in landfill, European legislation is aimed at encouraging more effective forms of treatment.