Environmental impact of cellulose carbamate fibers from chemically recycled cotton

Sara Paunonen (Corresponding Author), Taina Kamppuri, Leena Katajainen, Catharina Hohenthal, Pirjo Heikkilä, Ali Harlin

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The goal of this study was to assess the environmental impact of cellulose carbamate fiber production, using discarded cotton textiles as raw material, and compare the results to reference cotton and viscose fibers. Life cycle inventory and assessment was conducted for two production process scenarios within a cradle-to-gate system. Carbon footprint, water use, and water scarcity footprint were assessed. The results show that the carbon footprint of a cellulose carbamate factory integrated with a pulp mill, and that recycles water and chemicals in energy-intensive operations, is comparable to viscose production in Europe. Cellulose carbamate fiber production consumes less than 2% and 25% of the water consumed by cotton and viscose fiber production, respectively. For a factory located in Äänekoski in Finland, the water scarcity footprint was 15 m 3 water eq. per 1000 kg carbamate fiber. For Augsburg, Germany, a likely alternative location, the water scarcity footprint was 18 m 3 water eq. per 1000 kg carbamate fiber. Carbon footprint and local impact of water use give information that can be utilized to determine optimal locations for a carbamate factory. The study also indicated that discarded cotton textiles can be used as a cellulosic feedstock without increasing the carbon footprint and water use compared to the commercial viscose process. Additionally, by using cellulose carbamate technology, occupational health risks and the environmental burden of carbon disulfide and hydrogen sulfide emissions from viscose process vents can be avoided.

Original languageEnglish
Pages (from-to)871-881
Number of pages11
JournalJournal of Cleaner Production
Volume222
DOIs
Publication statusPublished - 10 Jun 2019
MoE publication typeNot Eligible

Fingerprint

carbamate (ester)
Cotton
Environmental impact
cellulose
cotton
Cellulose
environmental impact
carbon footprint
Fibers
Carbon footprint
Water
footprint
water use
water
Industrial plants
Textiles
Occupational risks
hydrogen sulfide
fibre
Viscose

Keywords

  • Carbon footprint
  • Life cycle inventory
  • Regenerated cellulose
  • Water scarcity footprint

Cite this

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title = "Environmental impact of cellulose carbamate fibers from chemically recycled cotton",
abstract = "The goal of this study was to assess the environmental impact of cellulose carbamate fiber production, using discarded cotton textiles as raw material, and compare the results to reference cotton and viscose fibers. Life cycle inventory and assessment was conducted for two production process scenarios within a cradle-to-gate system. Carbon footprint, water use, and water scarcity footprint were assessed. The results show that the carbon footprint of a cellulose carbamate factory integrated with a pulp mill, and that recycles water and chemicals in energy-intensive operations, is comparable to viscose production in Europe. Cellulose carbamate fiber production consumes less than 2{\%} and 25{\%} of the water consumed by cotton and viscose fiber production, respectively. For a factory located in {\"A}{\"a}nekoski in Finland, the water scarcity footprint was 15 m 3 water eq. per 1000 kg carbamate fiber. For Augsburg, Germany, a likely alternative location, the water scarcity footprint was 18 m 3 water eq. per 1000 kg carbamate fiber. Carbon footprint and local impact of water use give information that can be utilized to determine optimal locations for a carbamate factory. The study also indicated that discarded cotton textiles can be used as a cellulosic feedstock without increasing the carbon footprint and water use compared to the commercial viscose process. Additionally, by using cellulose carbamate technology, occupational health risks and the environmental burden of carbon disulfide and hydrogen sulfide emissions from viscose process vents can be avoided.",
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Environmental impact of cellulose carbamate fibers from chemically recycled cotton. / Paunonen, Sara (Corresponding Author); Kamppuri, Taina; Katajainen, Leena; Hohenthal, Catharina; Heikkilä, Pirjo; Harlin, Ali.

In: Journal of Cleaner Production, Vol. 222, 10.06.2019, p. 871-881.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Environmental impact of cellulose carbamate fibers from chemically recycled cotton

AU - Paunonen, Sara

AU - Kamppuri, Taina

AU - Katajainen, Leena

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AU - Heikkilä, Pirjo

AU - Harlin, Ali

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