Biohythane production from Chlorella sp. biomass by two-stage thermophilic solid-state anaerobic digestion

Jehlee, Aminee; Khongkliang, Peerawat; Suksong, Wantanasak; Rodjaroen, Somrak; Waewsak, Jompob; Reungsang, Alissara; O‐Thong, Sompong

doi:10.1016/j.ijhydene.2017.07.181

Cited by 20 publications

(9 citation statements)

References 52 publications

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“…For anaerobic digestion of cellulose in the control experiment, Clostridium XlVa , Clostridium III , Pseudomonas , Proteiniphilum , and Tissierella were the most abundant bacteria on the 5th day, with relative abundances of 24.27%, 19.24%, 18.33%, 6.48%, 3.92%, respectively. Clostridium III and Clostridium XlVa were cellulose hydrolytic acidification bacteria with butyric acid as their metabolite 34,35 . Pseudomonas belonged to the Pseudomonas family with the function of lignocellulose hydrolysis 36 .…”

Section: Resultsmentioning

confidence: 99%

“…Clostridium III and Clostridium XlVa were cellulose hydrolytic acidification bacteria with butyric acid as their metabolite. 34,35 Pseudomonas belonged to the Pseudomonas family with the function of lignocellulose hydrolysis. 36 Proteiniphilum, which are fermentative bacteria, decomposed proteins and sugars to generate acetic acid and propionic acid.…”

Section: Microbial Community Analysismentioning

confidence: 99%

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Methane production of rare earth element‐rich Dicranopteris dichotoma and effects of La(III) on anaerobic digestion performance of lignocellulose

Xing

Wang

Zhang

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Phytoremediation by hyperaccumulators (such as Dicranopteris dichotoma) is widely used for the remediation of rare earth tailings in China. Accordingly, a large amount of rare earth‐rich plant residues is produced. Anaerobic digestion could convert biomass into energy. In this study, the anaerobic digestion performance of D. dichotoma, which is rich in rare earth elements (REEs), was investigated. Cellulose, xylan, and glucose served as the model substrates to explore the effects of La(III) on hydrolysis and methane production using batch anaerobic digestion. RESULTS The results indicated that the La(III) concentration of 500 mg/L inhibited methane production from cellulose with the reduciton of 20%. Inversely, no significant difference was found in the cumulative methane yield from glucose with different La(III) concentrations. The microbial community results showed that the lack of cellulose hydrolyzing bacteria, such as Clostridium III and Clostridium XlVa, may be the main reason for the inhibition of methane production. Furthermore, the methane yield of REE‐rich D. dichotoma was 181.5 ± 14.6 mL/g VS and the La(III) concentration of luquid digestate was only 2.20 mg/L. CONCLUSION The inhibition of La(III) on anaerobic digestion of lignocellulose was mainly in the hydrolysis process of cellulose, while the inhibition of xylan hydrolysis was relatively weak, and it had no significant effect on methanogenesis process of glucose. La(III) showed a small effect on the methane production of REE‐rich D. dichotoma due to a small amount of release into the liquid digestate. Anaerobic digestion may be a feasible way for treating lignocellulose plants contaminated with rare‐earth minerals. © 2022 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

Section: Microbial Community Analysismentioning

confidence: 99%

Methane production of rare earth element‐rich Dicranopteris dichotoma and effects of La(III) on anaerobic digestion performance of lignocellulose

Xing

Wang

Zhang

et al. 2022

J of Chemical Tech & Biotech

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“…Similar genus was found in a methane sample from two-stage thermophilic Chlorella sp. biomass fermentation 60 , and POME samples with high loads of butyric acid and acetic acid that resulted in high BioCH 4 production 42 . In fact, species belonging to Methanothermobacter sp.…”

Section: Discussionmentioning

confidence: 99%

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Mahmod

Azahar

Luthfi

et al. 2020

Sci Rep

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Two-stage anaerobic digestion of palm oil mill effluent (POME) is a promising method for converting the waste from the largest agricultural industry in Southeast Asia into a clean and sustainable energy. This study investigates the degradation of acid-rich effluent from the dark fermentation stage for the production of biomethane (BioCH4) in a 30-L continuous stirred-tank reactor (CSTR). The continuous methanogenic process was operated with varied HRTs (10 - 1 day) and OLRs (4.6–40.6 gCOD/L.d−1) under thermophilic conditions. Methanothermobacter sp. was the dominant thermophilic archaea that was responsible for the production rate of 4.3 LCH4/LPOME.d−1 and methane yield of 256.77 LCH4kgCOD at HRT of 2 d, which is the lowest HRT reported in the literature. The process was able to digest 85% and 64% of the initial POME’s COD and TSS, respectively. The formation of methane producing granules (MPG) played a pivotal role in sustaining the efficient and productive anaerobic system. We report herein that the anaerobic digestion was not only beneficial in reducing the contaminants in the liquid effluent, but generating BioCH4 gas with a positive net energy gain of 7.6 kJ/gCOD.

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“…Polymerase chain reaction-denaturing gel gradient electrophoresis (PCR-DGGE) was used to analyze the microbial community during the late hydrogen production phase. The analysis was conducted using the method of Jehlee et al (2017) .…”

Section: Methodsmentioning

confidence: 99%

Improvement of hydrogen production from Chlorella sp. biomass by acid-thermal pretreatment

Giang

Lunprom

Liu

et al. 2019

PeerJ

Self Cite

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Background Owing to the high growth rate, high protein and carbohydrate contents, and an ability to grow autotrophically, microalgal biomass is regarded as a promising feedstock for fermentative hydrogen production. However, the rigid cell wall of microalgae impedes efficient hydrolysis of the biomass, resulting in low availability of assimilable nutrients and, consequently, low hydrogen production. Therefore, pretreatment of the biomass is necessary in order to achieve higher hydrogen yield (HY). In the present study, acid-thermal pretreatment of Chlorella sp. biomass was investigated. Conditions for the pretreatment, as well as those for hydrogen production from the pretreated biomass, were optimized. Acid pretreatment was also conducted for comparison. Results Under optimum conditions (0.75% (v/v) H2SO4, 160 °C, 30 min, and 40 g-biomass/L), acid-thermal pretreatment yielded 151.8 mg-reducing-sugar/g-biomass. This was around 15 times that obtained from the acid pretreatment under optimum conditions (4% (v/v) H2SO4, 150 min, and 40 g-biomass/L). Fermentation of the acid-thermal pretreated biomass gave 1,079 mL-H2/L, with a HY of 54.0 mL-H2/g-volatile-solids (VS), while only 394 mL/L and 26.3 mL-H2/g-VS were obtained from the acid-pretreated biomass. Conclusions Acid-thermal pretreatment was effective in solubilizing the biomass of Chlorella sp. Heat exerted synergistic effect with acid to release nutrients from the biomass. Satisfactory HY obtained with the acid-thermal pretreated biomass demonstrates that this pretreatment method was effective, and that it should be implemented to achieve high HY.

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Biohythane production from Chlorella sp. biomass by two-stage thermophilic solid-state anaerobic digestion

Cited by 20 publications

References 52 publications

Methane production of rare earth element‐rich Dicranopteris dichotoma and effects of La(III) on anaerobic digestion performance of lignocellulose

Methane production of rare earth element‐rich Dicranopteris dichotoma and effects of La(III) on anaerobic digestion performance of lignocellulose

Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

Improvement of hydrogen production from Chlorella sp. biomass by acid-thermal pretreatment

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