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1 Journal of Ecological Engineering

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Optimization of Palm Oil Boiler Ash Biomass Waste as a Source of Silica with Various Preparation Methods

Bukit Bunga Fisikanta, Frida Erna, Humaidi Syahrul, Sinuhaji Perdinan, Bukit Nurdin

Journal of Ecological Engineering

2022

Vol. 23, nr 8

193--199

Several studies have synthesized silica from waste. The silica synthesis method from agricultural waste aims to produce high purity silica with low contaminants at an affordable cost. This study synthesized silica from oil palm boiler ash (OPBA) by means of various methods, such as ball milling, coprecipitation, and modification with methyl trichlorosilane (MTCS). XRD characterization results showed that the OPBA synthesized with ballmill and coprecipitation method has the smallest particle size of 14.90 nm. Morphology showed the OPBA obtained by using the ballmill method, the OPBA synthesized with ballmill and coprecipitation method, as well as the OPBA synthesized with ballmill, coprecipitation, and modified with methyl trichlorosilane as spherical particles. At the same time, the FTIR results show an absorption peak which is a characteristic of silica confirmed by the XRF results, where silica content is dominant.