The mixing of slurry in an anaerobic digester (AD) is one many key parameters, which have a significant effect on specific biogas yield (BY) and volatile solid (VS) removal rate. determination the optimum regime very complex as it depends large number internal external factors such microbial community, rheology slurry, impeller design, intensity, intervals. novelty this study investigation lab-...

The objective of this study was to evaluate the concentration of Cu, Zn, Cr and Pb in different species of fish collected in the estuarine and limnic regions of the São Gonçalo channel, located in the Patos-Mirim lagoon complex in the coastal plain of Rio Grande do Sul State (Southern Brazil) during 2013 (autumn, winter and spring) and 2014 (summer). Fish samples were decomposed in a digester b...

The objective of this collaborative study was to evaluate the proposed method for determining the total nitrogen in soy sauce by the Kjeldahl method submitted to the Codex Alimentarius Commission for endorsement in accordance with the protocol for the design, conduct, and interpretation of method-performance studies. The digestive conditions of the proposed method are the addition of 10 mL of H...

Ittrich’s method for the determination of total estrogens in urine (1) was adapted for automation on the AutoAnalyzer, using a continuous digester module for the combined operation of phase exchange and color development. The automated method gave good recovery and reproducibility, and correlated well with the manual method. It increased the capacity of this laboratory for estrogen determinatio...

Microbial electrolysis cells (MECs) can be used to simultaneously convert wastewater organics to hydrogen and precipitate struvite, but scale formation at the cathode surface can block catalytic active sites and limit extended operation. To promote bulk phase struvite precipitation and minimize cathode scaling, a two-chamber MEC was designed with a fluidized bed to produce suspended particles a...

Aim: A Community-Based Anaerobic Digester was designed in this study for sustainable solid waste management Ile-Oluji, Ondo state Nigeria.
 Methodology: Waste samples were collected from selected households a period of one month and the components percentage composition determined. Afterwards, physico-chemical characteristics substrate investigated result used to design community-based ana...