NANO BIOSILICA PRODUCTION FROM BAMBOO LEAVES

• Main Author: Ramli, Yusrin
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/56291
• Institution: Institut Teknologi Bandung

Silica is one of the raw materials that has a very wide application, such as as a raw material for glass which is used daily to as an adsorbent and a catalyst in industry. Today's commercial silica uses non-renewable raw materials as well as manufacturing processes that rely on fossil fuels. Nowadays, the world is starting to move to renewable materials to protect the environment. Making silica using renewable raw materials and also using less energy is needed for the survival of the silica industry. Bamboo is one of the most abundant plants on the island of Java. Bamboo leaves, which are a byproduct of the bamboo industry, are usually processed into compost or as food packaging. Apart from being a compost fertilizer, bamboo leaves have the potential as a renewable raw material for silica. Bamboo leaves have about 30% ash with 75% amount of silica in the ash. This research examined the effect of washing using acid on bamboo leaves on ash recovery, the effect of extraction duration with NaOH solution on the recovery and quality of nanobiosilicas, the effect of extraction of residual extraction on the acquisition of biosilka, and the characteristics of the biosilica. The process of making silica from bamboo leaves begins by burning the bamboo leaves at 7000C for 2 hours. The bamboo leaf ash was then extracted using NaOH to obtain the silica contained in it. The obtained silica was then tested for crystallinity using XRD; size, morphology, and composition using SEM-EDS; pore size using BET. In this experiment, bamboo leaves had an ash content of 23.06% (as received) with a silica content of 94.74% -96.06% -m SiO2. Purity of biosilica is 99.65%-m SiO2. The resulting silica is in the amorf phase with a 2? = 22,80. The surface area of the biosilica obtained was 40.13-237.1 m2/g, the pore volume is 0.11279-0.85498 cc/g, and the pore diameter was 3.4-11.1 nm (mesoporous).