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Author: search.filters.author.Fonghiransiri, Surasak

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    Biodiesel Washing by the Prototype of a Biodiesel Washing Machine with Biochar
    (2025-11-01)
    Fonghiransiri, Surasak
    ;
    Chungcharoen, Thatchapol
    ;
    Choola-Aied, Orasa
    ;
    Srisang, Siriwan
    ;
    Srisang, Naruebodee
    Currently, the prevalent technique for biodiesel washing entails the utilization of water in the purification process. Nevertheless, this method incurs substantial biodiesel loss and gives rise to wastewater, posing potential environmental consequences. Hence, this study aimed to utilize biochar for removing impurities from biodiesel by using a prototype of a biodiesel washing machine with biochar. The effects of the propeller blade number, propeller blade angle, and mixing time on the capability to eliminate impurities in biodiesel were elucidated. The results indicated that the biodiesel washing machine can increase biodiesel yield by up to 2.49% (91.54%) compared to the water washing process (89.05%). The increased propeller blade number, angle, and mixing time can improve the acidity (24.50-64.04%) and water content removal (42.61-79.56%). Consequently, this led to a decrease in density (865.85-886.83 kg/m<sup>3</sup>) and viscosity (3.997-4.321 cSt). The conditions with the best biodiesel properties were five propeller blades, a propeller blade angle of 60 degrees, and a mixing time of 30 minutes. These conditions provided the 63.88% acid removal, 79.49% water content removal, viscosity of 878.92 kg/m<sup>3</sup> and density of 4.208 cSt. Moreover, the methanol and glycerol contents were 0.02% wt. and 0.04% wt., respectively. These properties meet the ASTM 6751 and EN 14214 biodiesel standards.
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    Application of Centrifuge Combined with Biodiesel Washing Machine with Biochar in Biodiesel Production
    (2025-01-01)
    Fonghiransiri, Surasak
    ;
    Chungcharoen, Thatchapol
    ;
    Choola-aied, Orasa
    ;
    Limmun, Warunee
    This research focused on the application of a centrifuge combined with a biodiesel washing machine with biochar in biodiesel production. This method aims to reduce the amount of biochar used in the washing process to meet biodiesel standards. Therefore, the research aimed to improve the biodiesel production process by using a centrifuge machine combined with the biochar washing method (CB) and comparing it with two methods: gravitational settling combined with water washing (GW) and gravitational settling combined with biochar washing (GB). The results indicated that the CB method could reduce contaminants in biodiesel. Although the biodiesel yield did not differ from the GB method, it remained higher than the GW method, increasing the biodiesel yield by up to 1.19% (90.24%). Furthermore, the CB method was more effective in removing acidity, water content, methanol, and glycerol in biodiesel compared to the GB method, with removal percentages of 63.88%, 79.49%, 99.70%, and 85.19% respectively. Consequently, this led to a decrease in viscosity (3.998 cSt) and density (865.93 kg/m<sup>3</sup>). This method provides biodiesel properties that meet biodiesel standards.
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    The improvement of germination method for producing the germinated brown rice using a water spraying system with a revolved sieve
    (2024-11-01)
    Chungcharoen, Thatchapol
    ;
    Sansiribhan, Sansanee
    ;
    Munsin, Ronnachart
    ;
    Phetpan, Kittisak
    ;
    Fonghiransiri, Surasak
    Water soaking is an important method in germinated brown rice (GBR) production that causes fermentation, leading to an unpleasant smell of GBR. In this research, a water spraying system with a revolved sieve is applied to produce the GBR. The increased speed and time of spray break led to higher moisture content and water absorption. The spray break of 30 min and revolved speed of 15 rpm provided the shortest time to obtain the paddy with a moisture content of 30% (w.b.). The incubation pattern with a revolved sieve and water spray provided the shortest incubation time for 90% germination. When producing the GBR with a water spraying system with a revolved sieve (GBR-WSSRS), it had a lower number of microorganisms compared to the GBR with a water soaking (GBR-WS), leading to higher scores of overall acceptability. However, the GBR-WSSRS had a lower GABA content than the GBR-WS.