Valuable Chemicals Derived from Pyrolysis Liquid Products of <i>Spirulina platensis</i> Residue

Abstract

With a motto of preserving nature, the use of renewable resources for the fulfillment of human needs has been seen echoing these days. In response, microalgae, a water-living microorganism, is perceived as an interesting alternative due to its easy-to-cultivate nature. One of the microalgae, which possess the potential for being the future source of energy, food, and health, is Spirulina plantesis. Aiming to identify valuable chemicals possibly derived from it, catalytic and non-catalytic pyrolysis process of the residue of S. plantesis microalgae has been firstly carried out in a fixed-bed reactor over the various temperature of 300, 400, 500, 550 and 600 °C. The resulting vapor was condensed so that the liquid product consisting of the top product (oil phase) and the bottom product (water phase) can be separated. The composition of each product was then analyzed by Gas Chromatography-Mass Spectrometry (GC-MS). In the oil phase yield, the increase of aliphatic and polyaromatic hydrocarbons (PAHs) and the decrease of the oxygenated have been observed along with the increase of pyrolysis temperature, which might be useful for fuel application. Interestingly, their water phase composition also presents some potential chemicals, able to be used as antioxidants, vitamins and food additives.

Bio-Oil Characterizations of <i>Spirulina Platensis</i> Residue (SPR) Pyrolysis Products for Renewable Energy Development

“…The analytical results were for components C (41.36 wt%), H (6.60 wt%), and N (7.17 wt%), O (35.33 wt%). Meanwhile, for the proximate analysis, the lipids at SPR (0.09 wt%) were very low, and HHV (18.21 MJ/kg) [3][4][5].…”

“…The yield of the SPR pyrolysis product was calculated by equation (1)(2)(3)(4)(5). SPR pyrolysis experiment was carried out three (3) times, product yield was the average value, and the results are shown in Fig.…”

The Effectiveness of Activated Charcoal from Coconut Shell as The Adsorbent of Water Purification in The Laboratory Process of Chemical Engineering Universitas Ahmad Dahlan Yogyakarta

“…According to [20] has researched activated charcoal from the banana peel as a methyl blue absorbent. Another benefit of activated charcoal was the increase in liquid smoke [21,22]. Furthermore, in this study, we conducted the application of activated charcoal to water purification in the laboratory process of Chemical Engineering, Universitas Ahmad Dahlan.…”

Potensi Produk Cair (Oil Phase dan Water Phase) Pirolisis Mikroalga Sebagai Pengawet Makanan

“…Senyawa-senyawa tersebut yakni asam dan turunannya, alkohol, fenol, aldehid, karbonil, keton, dan pirimidin. Untuk itu dimungkinkan bahan baku pirolisis dapat berasal dari sumber biomassa yang lain, yakni mikroalga [8].…”

“…Keunggulan produk cair pirolisis mikroalga adalah oil phase dan water phase masing-masing berpotensi sebagai pengawet makanan dan senyawa nitrogenat yang cukup tinggi dapat digunakan sebagai asupan protein pada makanan yang diawetkan. Sedangkan produk gas dapat digunakan sebagai energi, serta produk char dapat dipakai sebagai adsorben atau soil softener [8].…”