LCA Study: Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and food security in India

  • MichalKulak
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LCA Study: Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and food security in India

Hi All,

We wanted to share the findings of our recent study:

Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and food security in India

washdev.iwaponline.com/content/7/3/466

Abstract:

Nearly 800 million people in India lack access to adequate sanitation. The choice of technology for addressing this need may have important sustainability implications. In this study, we used life cycle assessment to compare environmental impacts and nutrient recovery potentials of four different options for providing everyone in India with access to improved sanitation: (i) centralised wastewater treatment with sequential batch reactors (SBR), (ii) twin-pit latrines, (iii) latrines with source separation only and (iv) latrines with source-separation of urine and faeces connected to biogas plants. Results revealed large variability. Closing the sanitation gap through pit latrines would be expected to cause large increases of India's annual greenhouse gas (GHG) emissions, equivalent to 7% of current levels. Source separation only and centralised plants with SBR will be associated with lower GHG emissions, while the biogas scenario shows a potential to provide net emission reduction. The study revealed that source separating systems can provide significant quantities of plant available nitrogen and phosphorus at the country level. Future research should include more technological options and regions. Methodology piloted in this study can be integrated into the planning and design processes for scaling up sanitation in India and other countries.

Please don't hesitate to get in touch if you have any questions.

Best wishes,
Michal Kulak

On behalf of authors

Dr. Michal Kulak Scientist - Environmental Sustainability, Safety & Environmental Assurance Centre

T: +44 (0)1234 26 4771 M: +44 (0) 778 833 4492

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  • SuSanA secretariat currently allocates 2 full time person equivalents of time from members of GIZ Sustainable Sanitation Team: Arne Panesar, Doreen Mbalo, Annkathrin Tempel, Shobana Srinivasan and interns Pelumi Olusanya and Valerie Benes
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Re: LCA Study: Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and food security in India

Dear Michael Kulak,

thank you for sharing your research result with the community!
A question: Was your study limited to certain regions in India or did you consistently work on national level? This might be very helpful, especially for our members and readers who work in India.



Kind regards,
Pelumi on behalf of the SuSanA Secretariat

Posted by a member of the SuSanA secretariat held by the GIZ Sustainable sanitation sector program
Located at Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, Germany
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  • MichalKulak
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Re: LCA Study: Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and food security in India

Hi Pelumi,

We've done the study at the national level - it is not limited to any specific regions of India.

Best wishes,
Michal

Dr. Michal Kulak Scientist - Environmental Sustainability, Safety & Environmental Assurance Centre

T: +44 (0)1234 26 4771 M: +44 (0) 778 833 4492

Unilever U.K. Central Resources Limited
Registered in England & Wales; Company No 29140
Registered Office: Unilever House, Blackfriars, London, EC4Y 0DY
www.unilever.com | www.TT21C.org
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