Thursday, October 05, 2017

IADAB News Weekly - Edition 3: From a New ADBA Industry Guide to a Growing Network of UK AD Plants

The IPPTS Anaerobic Digestion and Biogas News WEEKLY

This is Issue 3 of IADAB News Weekly in which we summarise the most important news of the week in the fast moving world of the Anaerobic Digestion and Biogas Industry in the UK, and globally! 

This week has seen the publication of articles on a variety of subjects. Watch our intro video about this newsletter below an then scroll down, and read our summary of those articles which interest you;


The highest popularity has been an article on Linked-in with 82 Linked-in likes, explaining how anaerobic digestion facilities protect the environment. 

Following that with 15 Twitter likes is the new AD Industry Guide from ADBA, and a Science Direct Article about AD and nitrogen removal. 

If that's too high-brow for you, and you want some more practical news, we have AD Plant leader Tamar Energy discussing their growing AD plant network.



Alright, let’s get started…

1. AOE and Other Anaerobic Digester Facilities Protect Environment by Transforming Organic Waste Into Fertilizer and Clean Energy

Focusing on energy and fertiliser within this article they say:

BIOGAS

AOE Website image.
Click image to see a larger version.
Charles Vigliotti, AOE’s chief executive, told The New York Times Magazine that the biogas produced at his facility could generate an astounding nearly 50 million kilowatt-hours of electricity per year. This [reduces the methane which would otherwise leak into the atmosphere producing environmental damage] and the newly harnessed energy will help power his facility, and can be sold to an electric company, and may also be used to fuel its fleet of trucks.

HIGH-NUTRIENT WATER AND FERTILIZER

The U.S. consumes close to 20 million tons of commercial fertilizer each year, according to the U.S. Department of Agriculture. And through the last 30 years, nitrogen fertilizer use has increased at a faster rate than phosphate and potash. Anaerobic digestion can produce organic fertilizers that typically contain many plant nutrients.

Click image to see a larger version.


[Anaerobic digestion helps protect the environment here as well.] Here’s how it works: After an anaerobic digester processes waste, what’s left is a material called digestate. In some parts of the world, that digestate is used to irrigate farm fields. In AOE’s case, the biogas company partnered with Scott’s Miracle-Gro to create high-nutrient water that eventually becomes organic nitrogen fertilizer. Organic fertilizers are also known to be slow-working, which decreases the chances of harming plants, unlike chemical-based fertilizers.

Even during a period in which governments and citizens alike are becoming more familiar with clean, renewable energy, it’s likely the notion of creating fuel to power trucks or entire facilities—or even water that can be used in organic fertilizer—would seem out of reach.

Not so, thanks to innovative companies such as American Organic Energy. via AOE & Other Anaerobic Digester Facilities Protect Environment By Transforming Organic Waste Into Fertilizer & Clean Energy

2. PRESS RELEASE: ADBA Releases Revamped AD Industry Guide

The Anaerobic Digestion and Bioresources Association (ADBA) has today released the second edition of The Practical Guide to AD, a key guidance document for developing and operating anaerobic digestion (AD) facilities in the UK.

ABDA Practical Guide to AD, cover image.
The Guide covers key topics of relevance to AD operators, including feedstocks, producing and using biogas and biomethane, digestate, planning, regulation, funding and insurance, training, and health and safety.

Over 50 contributors, a team of reviewers, and external stakeholders fed in their expertise and knowledge to update the Guide with the latest regulatory, policy and technological developments in the AD sector.

AD plants recycle organic wastes and convert purpose-grown crops into renewable heat and power, low-carbon transport fuel, and nutrient-rich biofertiliser. AD plants in the UK currently have enough capacity to power over a million homes as well as producing a range of co-benefits such as reducing greenhouse gas emissions, supporting UK farmers, decarbonising large vehicles, and recovering resources from wastes.

ADBA Anaerobic digestion news cover image
The Guide will be a living document, updated online periodically in line with developments in the AD industry.

3. Nitrogen removal during anaerobic digestion of wasted activated sludge under supplementing Fe(III) compounds

Anaerobic ammonium oxidation coupled to Fe(III) reduction, i.e., Feammox, is playing an important part in nitrogen cycle of natural environments, which however has been rarely investigated in waste water/solid treatment processes. 

Ammonium as a byproduct of nitrogenous substance decomposition during anaerobic digestion of waste activated sludge usually presents a quite high content and poses a great risk to environment.

This study focused on investigating the effects of supplementing Fe(III) compounds in anaerobic digestion of sludge and especially evaluating the roles in nitrogen removal.

Feammox Process Diagram
(c) Feammox

Supplementing magnetite, Fe2O3 and Fe(OH)3 in anaerobic digesters all increased the methane production and sludge reduction. 

Importantly, these Fe(III) compounds induced Feammox to occur continuously. 

NO2- and NO3- were generated in the Fe(III)-added reactors, especially in Fe(OH)3-added reactor. 

Afterwards, NOx- would be reduced with organics or Fe(II) as electron donors. Consequently, 20.1% of total nitrogen was removed in Fe(OH)3-added reactor after 40 days. 

As a product of dissimilatory iron reduction (including Feammox), the Fe(II) content was far less than theoretical production through the stoichiometrical NH4+ removal in Feammox, implying that the Fe(II) /Fe(III) cycle likely occurred to trigger the successive nitrogen loss.

4. Tamar Energy - Their Network of Anaerobic Digestion and Composting Sites Doing Well

Tamar Energy webiste image.

The following is the list of Tamar Energy sites provided:

  1. Tempsford IVC Site
  2. Swanley OWC Site
  3. Lackford OWC Site
  4. Beddingham OWC Site
  5. Ongar OWC Site
  6. Parham IVC Site
  7. Basingstoke AD Plant
  8. Halstead AD Plant
  9. Hoddesdon AD Plant
  10. Holbeach AD Plant
  11. Retford AD Plant

Tamar Energy Anaerobic digestion plant location map and list image.
If you follow the link below, to Tamar Energy from his popular page.

Remember it is not just an article, rather it is a clever set of map links. Map-links which the visitor can click on for further information about the Tamar group and their growing AD plant network. via Our network of anaerobic digestion and composting sites

There it is. Plenty to be thinking about in anaerobic digestion and biogas for this week!
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You may also like our rare blog article titled: Anaerobic Digestion Gets Good Press

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