Production of chemicals from microalgae is a substantial way to contribute to the economic viability of a biorefinery. In this research, we report a new and green method for producing acetic acid from microalgae directly or from its waste residue after biofuel extraction using copper (II) oxide (CuO) as a solid oxidant. Results show that the CuO can significantly facilitate the oxidation of microalgae and its waste residue into acetic acid with the simultaneous reduction of CuO to Cu and Cu₂O. The maximum acetic acid yield reached up to 35 % and 31 % from the microalgae and its waste residue, respectively, which are much higher than previous report (14.9 %) which is obtained with traditional liquid oxidants such as H₂O₂. The reduction of CuO to Cu(0) at a relatively low temperature (300 °C) offered an additional benefit of developing a sustainable method in copper metallurgy at mild conditions.

从微藻类生产化学品是提高生物炼油厂经济可行性的重要途径。在这项研究中，我们报告了一种新的绿色方法，可以直接从微藻类中提取乙酸，也可以利用氧化铜（II）作为固体氧化剂从生物燃料提取后的废渣中生产乙酸。结果表明，该氧化铜可以显著促进微藻的氧化和其废渣成乙酸与对铜和铜的同时减少的CuO ₂从微藻类和它的O的最大乙酸收率达到最高达35％和31％废渣，分别比以前的报告（14.9％）高得多，后者是使用传统的液态氧化剂（例如H ₂ O _{2）获得的}。在相对较低的温度（300°C）下将CuO还原为Cu（0）提供了在温和条件下开发铜冶炼可持续方法的另一个好处。