求翻译：工业制备生物柴油主要采用碱催化，液体碱催化反应效率高，但存在分离及中和废液消耗大量水等问题，而固体碱催化的酯交换反应，反应条件温、易分离且可重复利用。是什么意思？

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Industrial production of bio-diesel fuel used mainly alkali catalyst, liquid alkali catalytic efficiency high, but there is separation and the consumption of large quantities of waste and water problems, and solid alkali catalytic transesterification, conditions temperature, easily separated and rep

The industry preparation biology diesel oil mainly uses the base catalysis, the liquid base catalysis response efficiency is high, but has problems and so on separation and neutral waste liquid consumption massive water, but the solid base catalysis ester exchange responded, responded the condition

Industrial production of biodiesel using alkali catalytic, high efficiency liquid alkali-catalyzed reaction, but there are issues such as separation of waste and consume a lot of water in, and solid alkali-catalyzed Transesterification reaction, reaction temperature, easy to separate and reusable.

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