Abstract The production of sustainable energy resources are of great importance in the energy industry. As a result, studies have been extremely concerned with the conversion of coastal macroalgae into bio-products mostly through thermochemical processes such as pyrolysis. This study aimed to produce high efficiency value-added bio-products through the pyrolysis of the acid-washed Cladophora glomerata (ACG). It also attempted to upgrade the bio-products through the catalytic pyrolysis with the use of Zn/Activated biochar (Zn/C) catalyst. The catalyst was prepared via the carbonization of the ZnCl2 impregnated ACG under the optimal reaction conditions and was characterized by BET, XRD, FT-IR, FESEM-EDS and ICP analyzes. The experimental results indicated that the acid washing pretreatment led to the removal of inorganic contents of the biomass, and consequently to the significant increase in the bio-oil yield. In addition to this remarkable change in the product distributions and according to the results of the catalytic experiment, the Zn/C catalyst decreased the acid and oxygen contents of the bio-oil. It also increased the aromatic contents of the bio-oil and promoted H2 production. Accordingly, it favorably upgraded the quality of the bio-oil and pyro-gas. The study concludes that Cladophora macroalgae can be widely used as both feedstock and catalyst in order to produce value-added bio-products in the energy industry.

中文翻译：

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研究酸洗预处理和锌/活化生物炭催化剂对球藻热转化为高附加值生物产品的影响

摘要 可持续能源的生产在能源工业中具有重要意义。因此，研究一直非常关注沿海大型藻类主要通过热解等热化学过程转化为生物产品。本研究旨在通过酸洗枝条藻 (ACG) 的热解来生产高效增值的生物产品。它还尝试使用锌/活性生物炭 (Zn/C) 催化剂通过催化热解来升级生物产品。该催化剂是通过在最佳反应条件下将 ZnCl2 浸渍的 ACG 碳化制备的，并通过 BET、XRD、FT-IR、FESEM-EDS 和 ICP 分析进行表征。实验结果表明，酸洗预处理可以去除生物质中的无机成分，从而显着提高生物油产量。除了产物分布的这种显着变化以及根据催化实验的结果，Zn/C 催化剂降低了生物油的酸和氧含量。它还增加了生物油的芳烃含量并促进了 H2 的产生。因此，它有利地提高了生物油和热气的质量。该研究得出的结论是，大枝枝藻可广泛用作原料和催化剂，以在能源行业生产具有附加值的生物产品。它还增加了生物油的芳烃含量并促进了 H2 的产生。因此，它有利地提高了生物油和热气的质量。该研究得出的结论是，大枝枝藻可广泛用作原料和催化剂，以在能源行业生产具有附加值的生物产品。它还增加了生物油的芳烃含量并促进了 H2 的产生。因此，它有利地提高了生物油和热气的质量。该研究得出的结论是，大枝枝藻可广泛用作原料和催化剂，以在能源行业生产具有附加值的生物产品。