Integrating Small Scale Digestion Systems in Developing Regions


Proceedings Home W2W Home w2w17 logo

Purpose           

People in developing countries regularly lack access to energy or their energy source is not reliable. Low cost anaerobic digestion systems have the potential to provide methane to be used in a variety of end uses. Unfortunately, many low cost systems are not evaluated and it is unclear if they are living up to the expectations of the end users or those that are promoting or financially supporting their installation.…

Research Summaries

 

 

 

E. coli diversity in livestock manures

 

Cook, K.L., Bolster, C.H., Ayers, K.A., Reynolds, D.N. 2011. Escherichia coli diversity in livestock manures and agriculturally impacted stream waters. Current Microbiology. 63(5):439–449.

Summary

Escherichia coli (E. coli) is a dominant intestinal commensal organism, an important fecal indicator bacterium (FIB), a pathogen and a target for microbial source tracking (MST).

Poultry Digestion – Emerging Farm-Based Opportunity

While EPA AGSTAR has long supported the adoption of anaerobic digestion on dairies and swine farms, they have not historically focused on the use of anaerobic digestion on egg laying and other poultry facilities. This has been because the high solids and ammonia concentrations within the manure make anaerobic digestion in a slurry-based system problematic.…

Ciprofloxacin residues in biosolids compost do not selectively enrich populations of resistant bacteria

Biosolids and livestock manure are valuable high-carbon soil amendments, but they commonly contain antibiotic residues that might persist after land application. While composting reduces the concentration of extractable antibiotics in these materials, if the starting concentration is sufficiently high then remaining residues could impact microbial communities in the compost and soil to which these materials are applied.…