Life cycle assessment of different strategies for energy and nutrient recovery from source sorted organic fraction of household waste

Life cycle assessment of different strategies for energy and nutrient recovery from source sorted... This study attempted to apply life cycle assessment (LCA) methodology to compare distinctive management strategies when biologically treating source-sorted organic household waste (SSOHW). The management strategies included different pretreatment methods of SSOHW prior to anaerobic digestion and different biogas applications. Biopulp technology, screw press, and disc screen were chosen as three available pretreatment methods and electricity production, combined heat and power (CHP) production, as well as biogas upgrading were selected as three downstream management strategies. In all scenarios, the produced digestate was assumed for nutrient recovery and reject fractions from pretreatment step were considered to be incinerated. A consequential LCA was employed and long term marginal data was adapted to credit the amount of recovered energy and nutrient. The composition of SSOHW collected in Denmark was used to investigate the impact of created scenarios on several damage categories, i.e., Global warming potential, Human health, Ecosystem quality, and Resources. Moreover, the scenarios were also compared in terms of energy ratio to find the strategy resulting in the highest energy payback. The results showed that scenarios developed under the biopulp technology outperformed their counterparts in which other pretreatment methods were used. This was mostly due to the higher energy and nutrient recovery caused by correct sorting of SSOHW into reject and substrate fractions. Moreover, based on the results obtained, it can be concluded that CHP production would be the best downstream management option while the results were so sensitive to the source of substituted energy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Cleaner Production Elsevier

Life cycle assessment of different strategies for energy and nutrient recovery from source sorted organic fraction of household waste

Loading next page...
 
/lp/elsevier/life-cycle-assessment-of-different-strategies-for-energy-and-nutrient-vtLlLZq2WN
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0959-6526
D.O.I.
10.1016/j.jclepro.2018.01.198
Publisher site
See Article on Publisher Site

Abstract

This study attempted to apply life cycle assessment (LCA) methodology to compare distinctive management strategies when biologically treating source-sorted organic household waste (SSOHW). The management strategies included different pretreatment methods of SSOHW prior to anaerobic digestion and different biogas applications. Biopulp technology, screw press, and disc screen were chosen as three available pretreatment methods and electricity production, combined heat and power (CHP) production, as well as biogas upgrading were selected as three downstream management strategies. In all scenarios, the produced digestate was assumed for nutrient recovery and reject fractions from pretreatment step were considered to be incinerated. A consequential LCA was employed and long term marginal data was adapted to credit the amount of recovered energy and nutrient. The composition of SSOHW collected in Denmark was used to investigate the impact of created scenarios on several damage categories, i.e., Global warming potential, Human health, Ecosystem quality, and Resources. Moreover, the scenarios were also compared in terms of energy ratio to find the strategy resulting in the highest energy payback. The results showed that scenarios developed under the biopulp technology outperformed their counterparts in which other pretreatment methods were used. This was mostly due to the higher energy and nutrient recovery caused by correct sorting of SSOHW into reject and substrate fractions. Moreover, based on the results obtained, it can be concluded that CHP production would be the best downstream management option while the results were so sensitive to the source of substituted energy.

Journal

Journal of Cleaner ProductionElsevier

Published: Apr 10, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off