Skip to main content

Ideal Choice for Waste Management



Why Anaerobic Digestion?
There are essentially three main options for dealing with organic wastes:
§  bury it - which means landfilling
§  burn it - which means incineration, gasification or pyrolysis
§  bio-digest it - which means either anaerobic digestion or composting
Technology
Sustainable
Impact on the environment
Energy recovery
Fertiliser output
Water recovery
Heavy metal recovery
Landfill
No
Unsustainable waste of resources
No
Some CH
4 to atmosphere, leachate problems
Yes
Partial if landfill gas extracted
No
No fertiliser outputs
No
Lost in leachate
No
Not possible
Composting
No
Energy required
No
Damage to ozone layer, also leachate problems
No
None
Yes
Incomplete pathogen kill
No
Lost to atmosphere
No
Not possible
Incineration
No
Fertiliser loss negates any energy gain
No
Toxic ash
Yes
Some but Energy wasted
Yes
Some P&K output, but N destroyed
No
Burnt off
No
Secondary waste
Pyrolysis
No
Fertiliser loss negates any energy gain
No
Toxic ash, emmissions regulated
Yes
Some but Energy wasted
Yes
Some P&K output, but N destroyed
No
Burnt off
No
Secondary waste
Gasification
No
Fertiliser loss reduces energy gain
Yes
Pollutants locked in slag
Yes
Some but Energy wasted
Yes
Some P&K output, but N destroyed
No
Burnt off
No
Controlled not recovered
Anaerobic digestion
Yes
Carbon neutral
Yes
Total recovery of energy as CH
4CO2 & fertiliser
Yes
Maximum overall energy
Yes
Clean NPK fertiliser and trace elements
Yes
100%
Yes
Heavy metals can be recovered from digestate

Anaerobic digestion is the only system for dealing with organic waste which is sustainable, recovers the maximum energy, is a completely closed system with no emissions to air or land, which retains the fertiliser and water content, and facilitates the recovery of heavy metals.

Comments

Popular posts from this blog

4 technologies that are accelerating the green hydrogen revolution

Green Hydrogen through Electrolysis: Fuelling the Future | WRI INDIA (wri-india.org) Anuraag Nallapaneni  and  Krishnaveni Malladi  -  August 25, 2021   This is the second in a series of blogs on hydrogen, which will involve discussions around range of electrolysis technologies currently available at commercial and laboratory levels. Given the rising global consensus towards the transition towards a green hydrogen economy in coming decades, availability of commercially operable electrolysis technologies will act as a backbone of hydrogen deployment across sectors. Maturity of electrolysis technologies would also be critical in facilitating India’s 450 GW RE target, given electrolysis’s ability to manage duck curve challenges through its power to gas (P2G) applicability, further banking on hydrogen’s ability to act as a long-term energy storage medium. Read the first blog  here . Splitting water molecules, or the process of electrolysis, is one of the most p...

Solar Cell Manufacturers review

There are essentially 3 types of Solar Cell Companies .The tier 1 comprising top 2% do core R&d and are integrated end-to-end.The experience is more than 10 years. The second line about 8% do not indulge in R&d but use partial robotics etc for manufacturing. They have experience of 2-5 years .The rest 90% are assemblers and use human production lines for manual soldering.The projects however have a good capital output ratio .  Here's a good link to review the top Solar Companies  http://www.forbes.com/sites/uciliawang/2014/12/03/guess-who-are-the-top-10-solar-panel-makers-in-the-world/#2e34708f2812 Solar equipment makers are gearing up to expand production again after many of them had to idle production lines or close factories. So who are the top 10 solar panel makers these days? IHS   released its ranking today that put Trina Solar as the top shipper of solar panels in 2014, followed by Yingli Green  Energy . Both companies are based in ...

Green Hydrogen through Electrolysis: Fuelling the Future

Green Hydrogen through Electrolysis: Fuelling the Future | WRI INDIA (wri-india.org) Anuraag Nallapaneni  and  Krishnaveni Malladi  -  August 25, 2021   This is the second in a series of blogs on hydrogen, which will involve discussions around range of electrolysis technologies currently available at commercial and laboratory levels. Given the rising global consensus towards the transition towards a green hydrogen economy in coming decades, availability of commercially operable electrolysis technologies will act as a backbone of hydrogen deployment across sectors. Maturity of electrolysis technologies would also be critical in facilitating India’s 450 GW RE target, given electrolysis’s ability to manage duck curve challenges through its power to gas (P2G) applicability, further banking on hydrogen’s ability to act as a long-term energy storage medium. Read the first blog  here . Splitting water molecules, or the process of electrolysis, is one of the most p...