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<p>Solar-driven biosynthesis from carbon dioxide can facilitate sustainable chemical manufacturing. However, cell-density limits and contamination susceptibility have seriously hampered its practical implementation. Here we develop a solar–chemical hybrid-driven biosynthesis (SCHB) strategy integrating wastewater-based phosphorus recovery into biological photosynthetic metabolism for chemical production. Specifically, we incorporate the phosphite oxidation pathway into cyanobacteria to supplement additional electrons to stimulate bacterial growth. This strategy conferred contamination resistance and enabled the utilization of phosphite-rich wastewater. A series of chemicals including raspberry ketone, indigo and its derivatives were effectively synthesized via SCHB, and the synthesis efficiency was promoted by a factor of up to 305%. Furthermore, the scalability of SCHB was demonstrated at the 500-litre level with real wastewater, which synchronized chemical production with nutrient recovery. Life-cycle assessment and techno-economic analysis indicated notable environmental benefits and economic feasibility. This study potentially opens a viable approach for the sustainable biosynthesis of chemicals.</p>

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Solar-driven biosynthesis of chemicals from phosphite-rich wastewater and carbon dioxide

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Haotian Zheng,
  • Chaofeng Li,
  • Hui Shao,
  • Liangxu Liu,
  • Jiawei Wang,
  • Hengrun Li,
  • Chao Liao,
  • Jun Ni

摘要

Solar-driven biosynthesis from carbon dioxide can facilitate sustainable chemical manufacturing. However, cell-density limits and contamination susceptibility have seriously hampered its practical implementation. Here we develop a solar–chemical hybrid-driven biosynthesis (SCHB) strategy integrating wastewater-based phosphorus recovery into biological photosynthetic metabolism for chemical production. Specifically, we incorporate the phosphite oxidation pathway into cyanobacteria to supplement additional electrons to stimulate bacterial growth. This strategy conferred contamination resistance and enabled the utilization of phosphite-rich wastewater. A series of chemicals including raspberry ketone, indigo and its derivatives were effectively synthesized via SCHB, and the synthesis efficiency was promoted by a factor of up to 305%. Furthermore, the scalability of SCHB was demonstrated at the 500-litre level with real wastewater, which synchronized chemical production with nutrient recovery. Life-cycle assessment and techno-economic analysis indicated notable environmental benefits and economic feasibility. This study potentially opens a viable approach for the sustainable biosynthesis of chemicals.