The present invention relates to a solid acid catalyst and a method for preparing biodiesel using the same. The method for preparing biodiesel includes a step of preparing biochar and a step of adding acid to the prepared biochar and sintering at 250-600 deg. C for 1-5 seconds. [Reference numerals] (AA) Dunalliella skim cell; (BB) Dunalliella bio-charcoal; (CC) Acid solid catalyst
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机译：固体酸催化剂及其制备生物柴油的方法技术领域本发明涉及一种固体酸催化剂及其制备生物柴油的方法。制备生物柴油的方法包括制备生物炭的步骤和向制备的生物炭中加入酸并在250-600℃下烧结的步骤。 C 1-5秒。 [附图标记]（AA）杜氏藻脱脂细胞; （BB）Dunalliella生物木炭; （CC）酸性固体催化剂
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