scholarly journals Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw

RSC Advances ◽  
2020 ◽  
Vol 10 (16) ◽  
pp. 9290-9298 ◽  
Author(s):  
Rashid Mustafa Korai ◽  
Akiber Chufo Wachemo ◽  
Liu Yue ◽  
Muhammad Jaffar ◽  
Zhengwei Li ◽  
...  

The effect of ultrasonic application during KOH pretreatment and anaerobic digestion of wheat straw.

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Xiao-Shuang Shi ◽  
Jian-Jun Dong ◽  
Jun-Hong Yu ◽  
Hua Yin ◽  
Shu-Min Hu ◽  
...  

Three semicontinuous continuous stirred-tank reactors (CSTR) operating at mesophilic conditions (35°C) were used to investigate the effect of hydraulic retention time (HRT) on anaerobic digestion of wheat straw. The results showed that the average biogas production with HRT of 20, 40, and 60 days was 46.8, 79.9, and 89.1 mL/g total solid as well as 55.2, 94.3, and 105.2 mL/g volatile solids, respectively. The methane content with HRT of 20 days, from 14.2% to 28.5%, was the lowest among the three reactors. The pH values with HRT of 40 and 60 days were in the acceptable range compared to that with HRT of 20 days. The propionate was dominant in the reactor with HRT of 20 days, inhibiting the activities of methanogens and causing the lower methane content in biogas. The degradation of cellulose, hemicellulose, and crystalline cellulose based on XRD was also strongly influenced by HRTs.


2018 ◽  
Vol 115 ◽  
pp. 139-148 ◽  
Author(s):  
Yiqing Yao ◽  
Andre David Bergeron ◽  
Maryam Davaritouchaee

2008 ◽  
Vol 1 (1) ◽  
pp. 14 ◽  
Author(s):  
Ronald HW Maas ◽  
Robert R Bakker ◽  
Arjen R Boersma ◽  
Iemke Bisschops ◽  
Jan R Pels ◽  
...  

2015 ◽  
Vol 35 (5) ◽  
pp. 951-958 ◽  
Author(s):  
Deny Oliva-Merencio ◽  
Ileana Pereda-Reyes ◽  
Ulrike Schimpf ◽  
Stefan Koehler ◽  
Ariovaldo J. da Silva

ABSTRACT This paper studied the effect of adding an enzyme (ellulose) on anaerobic digestion of maize silage. We compared materials at chopping lengths of 8 mm (MSL), 4mm (MSS) and natural size (Ms) under a mesophilic and discontinuous operation (batch process). Hence, we found the process to be significantly influenced by particle size. Moreover, the ellulose addition did not significantly impact biogas production after a 35-day digestion period. Ms and MSS displayed an improved response to all variables when compared with MSL and MSL+C, with significant differences. Studies on the refractory fraction at infinite time (R0) have demonstrated that the lowest values correspond to Ms and MSS (0.122 and 0.155, respectively). The Kinetic approach and the Ultimate Biodegradability test are useful tools to evaluate the effect of the addition of an enzyme to the anaerobic process.


2017 ◽  
Vol 123 ◽  
pp. 409-418 ◽  
Author(s):  
Elsa Rouches ◽  
Marie-France Dignac ◽  
Simeng Zhou ◽  
Hélène Carrere

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