This work focused on glycerol exploitation for biogas and hydrogen production. Anaerobic digestion of pure glycerol was studied in a continuous stirred tank reactor (CSTR), operated under mesophilic conditions (35C) at various organic loading rates. The overall operation of the reactor showed that it could not withstand organic loading rates above 0.25 g COD L d, where the maximum biogas (0.42 ...

During advanced biological wastewater treatment, a huge amount of sludge is produced as a by-product of the treatment process. Hence, reuse and recovery of resources and energy from the sludge is a big technological challenge. The processing of sludge produced by Wastewater Treatment Plants (WWTPs) is massive, which takes up a big part of the overall operational costs. In this regard, anaerobic...

Primljeno (Received): 2012-02-21 Prihvaćeno (Accepted): 2012-05-15 Original scientific paper The Nash-Sutcliffe model efficiency coefficient (ENSC) has been modified in order to assess the quality of simulations compared to observed data from the mesophilic monofermentation of grass silage. By applying the ENSC it is not only possible to find parameter sets with the best fit, but also to analyz...

One of the possibilities to achieve energy neutrality wastewater treatment plants (WWTPs) is implementation anaerobic co-digestion strategy. However, a key factor in its successful on technical scale application components with complementary composition sewage sludge (SS). In 7resent study, influence adding various co-substrates balance digestion was evaluated. The following organic wastes were...

Anaerobic digestion (AD) technology is commonly used to treat sewage sludge from activated systems, meanwhile alleviating the energy demand (and costs) for wastewater treatment. Most often, anaerobic run in single-stage systems under mesophilic conditions, as this temperature regime considered be more stable than thermophilic one. However, it known that conditions are advantageous over ones ter...

The effect of zero-valent iron nanoparticles (nZVI) addition on methane production during anaerobic digestion pig slurry was assessed. Experiments were conducted using two experimental set-ups: batch and long-term continuous operation at a fixed nZVI dosage. Two different temperature ranges (mesophilic thermophilic) Biogas content monitored, the specific methanogenic activity biomass oxidation ...