Expanding AD Capacity In The UK
Basingstoke, Hampshire

After raising $160 million in 2012, Tamar Energy Ltd set out on an aggressive plan to build 40 anaerobic digestion facilities over the next five years, and generate 100 MW of green electricity.
David Riggle
BioCycle March/April 2014, Vol. 55, No. 3, p. 62

 

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Composting, Organics Recycling, Anaerobic Digestion

 

High Solids Anaerobic Digestion + Composting In San Jose
The four in-vessel composting tunnels (one shown on left in photo) are next to one of the banks of digesters (to the right). Content of two digesters fills one composting tunnel.

Housed inside a 100,000 sq. ft. building at the southern edge of the San Francisco Bay, a dry fermentation
AD system with composting bays is processing commercial organics from the City of San Jose.
Nora Goldstein
BioCycle March/April 2014, Vol. 55, No. 3, p. 42

Aerobic Composting And Anaerobic Digestion
Figure 2. Aerobic and anaerobic conditions (Image courtesy of U.S. Composting Council)

Both processes manage decomposition, carried out by biological organisms transforming the materials through chemical reactions. There are pros and cons to each process, and they can be used in series to enhance the value proposition of recycling organic materials.
Craig Coker
BioCycle March/April 2014, Vol. 55, No. 3, p. 32

 

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Managing Compostable Bags At Anaerobic Digestion Plants
Figure 3. Amounts (percent by weight) in light fraction after dewatering, manual sorting and chloroform extraction with FT-IR analysis

An analysis was performed in Italy to better understand the interaction of compostable bags with hydropulping pretreatment systems in wet AD facilities. Results show further recovery potential for the residues, with optimization of overall system performance.
Christian Garaffa and Rhodes Yepsen
BioCycle September 2012, Vol. 53, No. 9, p. 37

Food Waste Digester In Southern California
Digestion takes place in two continuous stirred reactors.

Diversion of 100,000 tons/year of commercial and industrial solid food waste is anticipated, along with generation of transportation fuel as CNG for 40 to 50 solid waste collection trucks.
John McNamara and George Eowan
BioCycle July 2012, Vol. 53, No. 7, p. 42

 

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Composting, Organics Recycling, Anaerobic Digestion