The current work illustrates a novel method of pre-treating rice straw using ultrasound (US) as well as using ultrasound coupled with anaerobic digestion (AD) to intensify biogas production. The primary objectives were to evaluate the effectiveness of ultrasound in increasing the utilization of rice straw and to optimize the conditions for maximum biogas yield. Important parameters such as ultrasonic power (0.2-1 W/mL), duty cycle (20%-80%), and substrate loading (2%-10% w/v) were varied to understand their effects during pre-treatment. The results showed that the maximum increase in soluble chemical oxygen demand (sCOD), with a final value of 13,500 mg/L (an increase of 64.63%), was achieved under optimum conditions of ultrasonic power of 0.4 W/mL, a duty cycle of 50%, and a substrate loading of 6% w/v. Additionally, the study evaluated the effect of low-intensity US exposure during AD with pre-treated rice straw at varying irradiation times (10-30 min) and duty cycles (20%-60%). The optimal conditions of ultrasonic time of 20 min and a duty cycle of 50% resulted in nearly four times higher biogas generation compared to untreated samples. The current research successfully demonstrates the efficient use of US in the feedstock pre-treatment and also in AD process, leading to significant intensification in biogas production within a shorter time frame.
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Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Marine Dept Malaysia Northern Reg, Gelugor 11700, Penang, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Chuah, Lai Fatt
Bokhari, Awais
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Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
COMSATS Inst Informat Technol, Dept Chem Engn, Lahore 54000, PakistanUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Bokhari, Awais
Yusup, Suzana
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Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Yusup, Suzana
Klemes, Jiri Jaromir
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Pazmany Peter Catholic Univ, Fac Informat Technol & Bion, Prater U 50-A, H-1083 Budapest, HungaryUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Klemes, Jiri Jaromir
Akbar, Majid Majeed
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Univ Punjab, Inst Chem Engn & Technol, Lahore, PakistanUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Akbar, Majid Majeed
Saminathan, Sugesvarran
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Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Chuah, Lai Fatt
Bokhari, Awais
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
COMSATS Inst Informat Technol, Dept Chem Engn, Lahore, PakistanUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Bokhari, Awais
Yusup, Suzana
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Yusup, Suzana
Klemes, Jiri Jaromir
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Pazmany Peter Catholic Univ, Fac Informat Technol & Bion, Prater U 50-a, H-1083 Budapest, HungaryUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Klemes, Jiri Jaromir
Abdullah, Bawadi
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Abdullah, Bawadi
Akbar, Majid Majeed
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Univ Punjab, Inst Chem Engn & Technol, Lahore, PakistanUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
机构:
Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Marine Dept Malaysia Northern Reg, Gelugor 11700, Penang, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Chuah, Lai Fatt
Bokhari, Awais
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机构:
Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
COMSATS Inst Informat Technol, Dept Chem Engn, Lahore 54000, PakistanUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Bokhari, Awais
Yusup, Suzana
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机构:
Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Yusup, Suzana
Klemes, Jiri Jaromir
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Pazmany Peter Catholic Univ, Fac Informat Technol & Bion, Prater U 50-A, H-1083 Budapest, HungaryUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Klemes, Jiri Jaromir
Akbar, Majid Majeed
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机构:
Univ Punjab, Inst Chem Engn & Technol, Lahore, PakistanUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Akbar, Majid Majeed
Saminathan, Sugesvarran
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Univ Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Biomass Proc Lab, CBBR, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Chuah, Lai Fatt
Bokhari, Awais
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机构:
Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
COMSATS Inst Informat Technol, Dept Chem Engn, Lahore, PakistanUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Bokhari, Awais
Yusup, Suzana
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Yusup, Suzana
Klemes, Jiri Jaromir
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Pazmany Peter Catholic Univ, Fac Informat Technol & Bion, Prater U 50-a, H-1083 Budapest, HungaryUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Klemes, Jiri Jaromir
Abdullah, Bawadi
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Univ Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, MalaysiaUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia
Abdullah, Bawadi
Akbar, Majid Majeed
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Univ Punjab, Inst Chem Engn & Technol, Lahore, PakistanUniv Teknol PETRONAS, Ctr Biofuel & Biochem Res CBBR, Biomass Proc Lab, Dept Chem Engn, Seri Iskandar 32610, Perak, Malaysia