Acai seed ash as a novel basic heterogeneous catalyst for biodiesel synthesis: Optimization of the biodiesel production process

[Display omitted] •Acai seed waste was used as precursor for synthesis of heterogeneous catalyst.•Potassium was the main active component responsible for high catalytic activity.•The transesterification process was optimized by response surface methodology.•98.5% ester content achieved at 12% cataly...

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