Anaerobic co-digestion technology is increasingly used to simultaneously treat solid and liquid organic waste to balance nutrient content, to reduce the negative effects of toxic compounds in the process, and to increase biogas yield. The aim of this study was to analyze the economic performance of co-digestion plants fed with agro-industrial wastes as a function of installed power, with a meth...

Two multistaged anaerobic digestion systems, a four-stage thermophilic anaerobic digestion (4TAD), all at 55°C, and a four-stage anaerobic digestion with a tapered temperature configuration (4ADT) at 55, 49, 43, and 37°C, respectively, were studied to evaluate their solids, volatile organic sulfur compounds, and indicator organism (E. coli and fecal coliform) reduction potentials. The 4TAD syst...

Technologies that separate manure or digestate into fractions with different solids and nutrient contents present interesting options to mitigate storage emissions (by reducing the quantity of carbon stored anaerobically) improve distribution water transported nutrients). In this study, dairy farm model, DairyCrop-Syst, was used simulate methane (CH 4 ), nitrous oxide (N 2 O), ammonia (NH 3 for...

• CFD anaerobic digesters models were validated by means of complete RTD curve. Design mixing parameters in digestion should be review. Local are strongly recommended for studies. Second-order moments offer geometrical and local information models. The propeller was found crucial to avoid dead volumes formation. Anaerobic (AD) has become an essential process sludge treatment its optimum perform...

The temperature-phased anaerobic digestion (TPAD) process was used for the anaerobic digestion of the source separated biodegradable organic fraction of municipal solid waste (OFMSW). The TPAD process was used to co-digest OFMSW with primary wastewater solids (PS) at ratios of 20:80, 40:60, 60:40, and 80:20 O FM SW :PS. Th e OF MS W/P S feed mixtu re wa s slurrie d at co ncen trations up to 5.2...

Sisal leaf decortications residue (SLDR) is amongst the most abundant agro-industrial residues in Tanzania and is a good feedstock for biogas production. Pre-treatment of the residue prior to its anaerobic digestion (AD) was investigated using a two-stage pre-treatment approach with two fungal strains, CCHT-1 and Trichoderma reesei in succession in anaerobic batch bioreactors. AD of the pre-tre...

Anaerobic digestion (AD) is a widespread microbial technology used to treat organic waste and recover energy in the form of methane ("biogas"). While most AD systems have been designed to treat a single input, mixtures of digester sludge and solid organic waste are emerging as a means to improve efficiency and methane yield. We examined laboratory anaerobic cultures of AD sludge from two source...

in biological wastewater treatment large quantities of sludge are produced. this sludge is highly putrescible.for disposal and safe usage should be stabilized. the anaerobic digestion is a standard technique for stabilization. due to the rate imiting step of sludge hydrolysis, anaerobic degradation is a slow process with high digestion time. due to high retention time and sludge dewatering prob...

Anaerobic digestion can be used to degrade food waste and recover energy. Methane is a biogas that can be efficiently converted in electricity. Organic loading rate, temperature, time, pH, carbon to nitrogen ratio are important factors to be operated in the bioreactors and still are challenges in this process to increase biogas production. It has been reviewed the single phase and two-stage bio...

Huge amounts of food waste are generated worldwide. Efficient valorisation strategies ensure that embedded energy and resources are at least partially recuperated. Food waste is a highly biodegradable material with high water content, and as such well destined for biogas production through anaerobic digestion. In order to ensure successful implementation of food waste valorisation via anaerobic...