Suwannarat, Glinsukol

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Suwannarat, Glinsukol
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glinsukol.su@kmitl.ac.th

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    Treatment of Lignin Wastewater Using Peroxydisulfate Combined with Manganese Oxide-Loaded Biochar
    (2022-09-01)
    Suwannarat, Glinsukol
    ;
    Sontabam, Kemason
    ;
    Sawangying, Soraya
    ;
    Chaiyaraksa, Chompoonut
    The pulp and paper industry wastewater discharge into public water, it will cause water pollution problems. In this research, lignin contaminated synthetic wastewater with a COD value of 2,401 mg/L, and color intensity of 5,432 ADMI was treated using 150 mM sodium peroxydisulfate in combination with MnO<inf>x</inf>-loaded biochar (MnO<inf>x</inf>-B). The MnO<inf>x</inf>-B was produced by pyrolyzing corn core at 400 °C for 4 hours without oxygen, then dipped in 40 mM manganese sulfate for 2 hours, and heated at 600°C for 30 min without oxygen. From the characterization of MnO<inf>x</inf>-B, the surface area, pore volume, pore size, and pH value at the zero-point charges of MnO<inf>x</inf>-B were 153 m<sup>2</sup>/g, 0.054 cm<sup>3</sup>/g, 1.11 nm, and 7.23, respectively. From the FTIR spectrogram, the peak assigned to Mn-O was observed. By applying 150 mM sodium peroxydisulfate and varying three parameters: MnO<inf>x</inf>-B dosage, initial wastewater pH, and reaction time, to treat lignin wastewater, the optimum experimental condition was obtained using 2 mg/L of MnO<inf>x</inf>-B, under pH of 8 for 45 min. The COD and color removal efficiencies were 73% and 90%, respectively. However, the quality of the treated wastewater did not yet pass the pulp and paper mills effluent standards of the Department of Industrial Works.
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    Biofuel production from pyrolysis oil of fresh palm fruit bunches via atmospheric distillation using a updraft biomass gas stove
    (2026-01-01)
    Unsomsri, Nathawat
    ;
    Koedthong, Patchara
    ;
    Tawkaew, Sittinun
    ;
    Wiriyasart, Songkran
    ;
    Suwannarat, Glinsukol
    The increasing demand for sustainable energy sources has driven research into alternative biofuels derived from biomass. One promising approach is the production of liquid biofuels through pyrolysis and subsequent distillation, utilizing renewable heat sources. However, challenges remain in optimizing fuel yield, improving combustion efficiency, and minimizing emissions. This study investigates the production of biogasoline and biodiesel from pyrolysis oil derived from fresh palm fruit bunches using an updraft biomass gas stove as a sustainable heat source. The research evaluates biofuel yields, emissions, and fuel properties to assess the feasibility of biomass-based biofuel production. The results indicate that the system successfully produced 20.2% biogasoline, 26% biodiesel, and 53.8% heavy oil, with compositions similar to conventional fuels. However, CO emissions exceeded standard limits during the initial and final combustion stages, while NO<inf>x</inf> remained within acceptable levels. The total CO<inf>2eq</inf> emissions from wood scrap combustion during distillation were 0.33 kg-CO<inf>2e</inf> per batch. Biodiesel’s higher oxygen content enhances stability but may require upgrading to improve fuel quality. These findings highlight the potential of biomass-based heat integration for biofuel refining.
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    Peroxydisulfate Co-Treatment with MnOx-Loaded Biochar for COD Removal from Automobile Service Station Wastewater
    (2023-01-01)
    Suwannarat, Glinsukol
    ;
    Pattanagulanan, Kunlasatree
    ;
    Rueangsukhon, Chonlada
    ;
    Nasingthong, Panatda
    ;
    Chaiyaraksa, Chompoonut
    This research was aimed at recycling agricultural waste and treating synthetic automobile service station wastewater. Wastewater was synthesized to two levels of COD concentration: 702 mg/L (WW-A) and 7,054 mg/L (WW-B). In the treatment process, 100 mM sodium peroxydisulfate with MnO<inf>x</inf>-loaded biochar (MnO<inf>x</inf>-Biochar) was applied. The MnO<inf>x</inf>-Biochar was produced by dipping corn cob biochar in 40 mM manganese sulfate followed by pyrolyzed at 600°C. The surface area, pore volume, pore size, and pH value at the zero-point charge of MnO<inf>x</inf>-Biochar were 130 m<sup>2</sup>/g, 0.044 cm<sup>3</sup>/g, 1.02 nm, and 7.05, respectively. From the FTIR spectrogram, a peak assignable to Mn-O was observed. The results showed that the initial pH of the wastewater did not affect the treatment efficiency. The optimum MnO<inf>x</inf>-Biochar dosage was 2 g/L. Equilibrium was reached within 120 min of reaction. During the first 15 min, the treatment rate constants (k) of the WW-A and WW-B treatment were 0.0647 min<sup>-1</sup> and 0.0349 min<sup>-1</sup>, respectively. After 15 min, the k values of the WW-A and WW-B treatments were reduced to 0.0242 min<sup>-1</sup> and 0.0094 min<sup>-1</sup>, respectively. The overall treatment efficiencies of the low COD wastewater (WW-A) and high COD wastewater (WW-B) were 97% and 78%, respectively. The treatment mechanisms involved both adsorption and oxidation. The adsorption efficiencies of the WW-A and WW-B treatments were 36% and 18%, respectively.