anaerobic digestion processes Articles

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Doubling the SRF production capacity with TANA Shark

by Tana Oy  (Sep. 24, 2014)

A company in France operating in landfill, waste management and fuel production businesses produces SRF (Solid Recovered Fuel) from unsorted industrial waste for their own mill. The key for improving productivity of all these three business areas is a more effective shredding process to increase the low SRF production capacity. TANA ran a ...

Maize Products Biogas CHP Gujarat

by Clarke Energy  (Sep. 17, 2014)

With a legacy of over seven decades, Maize Products has exemplified corn milling from a modest 1 tonne/day of crushing in the year 1941 to a crushing of 650 tonnes/day today. Honoured with the National Award for Import Substitution in the year 1976, Maize Products actively contributes in the research and development of starch & starch ...

Thermophilic anaerobic digestion of sewage sludge with high solids content

by IWA Publishing  (May 7, 2014)

The treatment performance of thermophilic anaerobic digestion (AD) of sewage sludge with high solids content was investigated with two laboratory-scale thermophilic anaerobic reactors (R1 and R2) with a feeding of pre-centrifuged sewage sludge. Reactor R1 was fed with sludge of 3.7% total solids (TS). The volatile solids (VS) removal ratio ...

Improving products of anaerobic sludge digestion by microaeration

by IWA Publishing  (Feb. 26, 2014)

Biogas, digested sludge and sludge liquor are the main products of anaerobic sludge digestion. Each of the products is influenced significantly by specific conditions of the digestion process. Therefore, any upgrade of the digestion technology must be considered with regard to quality changes in all products. Microaeration is one of the methods ...

Vacuum evaporation treatment of digestate: full exploitation of cogeneration heat to process the whole digestate production

by IWA Publishing  (Aug. 7, 2014)

Vacuum evaporation represents an interesting and innovative solution for managing animal waste surpluses in areas with high livestock density. To reduce operational costs, a key factor is the availability of an inexpensive source of heat, such as that coming from an anaerobic digestion (AD) plant. The aim of this study was to test vacuum ...

Managing Compostable Bags At Anaerobic Digestion Plants

by BioCycle Magazine  (Sep. 1, 2012)

The highest and best use for treating residential food waste is through source separation, sending organics first to anaerobic digestion (to capture energy), followed by aerobic composting (to return nutrients to the soil). Sending food waste to anaerobic digestion (AD) facilities requires appropriate tools and planning for capturing high volumes ...

Improving nutrient fixation and dry matter content of an ammonium-rich anaerobic digestion effluent by struvite formation and clay adsorption

by IWA Publishing  (Jul. 23, 2014)

The anaerobic digestion (AD) of organic wastes that contain nitrogen leads to its mineralization, yielding a digestate rich in ammonium (NH4+), an important fertilizing nutrient. The applicability of AD digestate as fertilizer can be improved by fixating the nutrients and increasing its dry matter content. Methods for the fixation and ...

Anaerobic Digestion—What Are the Economics?

by Waste Advantage Magazine  (Jul. 1, 2014)

Although solid waste AD facilities are just starting to emerge, haulers and their customers may see some benefits if the development trend continues. A Pro Forma Model objective can be constructed for strategic planning of an anaerobic digestion facility. Anaerobic digestion (AD) of food wastes in the U.S. is a developing market that is poised for ...

Power Positive Resource Recovery

by BioCycle Magazine  (Aug. 22, 2014)

Using laws of thermodynamic analysis to evaluate the energy and power characteristics of wastewater and beneficial uses of biogas offers greater insight into best business practices and what is achievable. Growing numbers of waste-water treatment plants (WWTP) are striving to produce more power onsite. In recent years, there’s even been a ...

Study of the recovery of phosphorus from struvite precipitation in supernatant line from anaerobic digesters of sludge

by IWA Publishing  (Oct. 16, 2014)

The goal of this work was to study the effective recovery of phosphorus from the supernatant of anaerobic digestion of sewage sludge by precipitation as struvite. The formation of struvite is envisioned as a promising process for nutrient removal and subsequent recovery, thus providing a strong incentive for its implementation, since the sewage ...

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