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<p>This study conducts a comprehensive life cycle assessment (LCA) of coated and uncoated triple superphosphate (TSP), evaluating the environmental performance of a Tunisian company specialized in phosphate-based fertilizers. The research further aims to optimize the company’s industrial processes, particularly because coated and uncoated TSP represent some of the most environmentally impactful phosphate products in Tunisia. The ReCiPe 2016 Midpoint (H)/World (2010) H method was applied to measure and correlate experimental data with modeling results. Eighteen impact categories were analyzed and validated through the elaborated model which is based on the accuracy calculations via uncertainty analysis (UA) using the software. The life cycle assessment results revealed that coated TSP production significantly contributes to climate change, with a global warming potential of 1.27E6 kg CO<sub>2</sub> eq, while uncoated TSP showed a lower impact of 118&#xa0;kg CO<sub>2</sub> eq. Coated TSP also exhibited higher emissions related to ozone formation affecting human health (7.96E3 kg NOx eq) and fine particulate matter formation (4.39E3 kg PM2.5&#xa0;eq), compared to uncoated TSP which mainly impacted fossil resource scarcity (131&#xa0;kg oil eq). These findings emphasize the need for process optimization, as the SimaPro modeling identified climate change and resource depletion as critical environmental hotspots for both products. Ultimately, modeling conducted with SimaPro predicts the substantial environmental impact of triple superphosphate (TSP) and prioritizes the key factors influencing the carbon inventory.</p>

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Cradle-to-gate lifecycle assessment of Tunisian phosphate products

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Saida Zaidi,
  • Mohamed Turki,
  • Zaineb Souilah,
  • Monem Kallel

摘要

This study conducts a comprehensive life cycle assessment (LCA) of coated and uncoated triple superphosphate (TSP), evaluating the environmental performance of a Tunisian company specialized in phosphate-based fertilizers. The research further aims to optimize the company’s industrial processes, particularly because coated and uncoated TSP represent some of the most environmentally impactful phosphate products in Tunisia. The ReCiPe 2016 Midpoint (H)/World (2010) H method was applied to measure and correlate experimental data with modeling results. Eighteen impact categories were analyzed and validated through the elaborated model which is based on the accuracy calculations via uncertainty analysis (UA) using the software. The life cycle assessment results revealed that coated TSP production significantly contributes to climate change, with a global warming potential of 1.27E6 kg CO2 eq, while uncoated TSP showed a lower impact of 118 kg CO2 eq. Coated TSP also exhibited higher emissions related to ozone formation affecting human health (7.96E3 kg NOx eq) and fine particulate matter formation (4.39E3 kg PM2.5 eq), compared to uncoated TSP which mainly impacted fossil resource scarcity (131 kg oil eq). These findings emphasize the need for process optimization, as the SimaPro modeling identified climate change and resource depletion as critical environmental hotspots for both products. Ultimately, modeling conducted with SimaPro predicts the substantial environmental impact of triple superphosphate (TSP) and prioritizes the key factors influencing the carbon inventory.