Molecular and microbial insights towards understanding the anaerobic digestion of the wastewater from hydrothermal liquefaction of sewage sludge facilitated by granular activated carbon (GAC)

Usman, Muhammad; Hao, Shilai; Chen, Huihui; Ren, Shuang; Tsang, Daniel C.W.; O‐Thong, Sompong; Luo, Gang; Zhang, Shicheng

doi:10.1016/j.envint.2019.105257

Cited by 96 publications

(36 citation statements)

References 58 publications

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“…In addition, as clearly demonstrated in Figure 3a, diversity of the predominantly bacterial community under thermophilic conditions was higher than that under mesophilic conditions. High bacterial diversity enhance digestibility of complex substrates [38]. Therefore as mentioned previously mentioned in Table 2, considerably high hydrolysis constant and short lag time obtained from SS-AcoD of EFB with DC under thermophilic condition could be also contributed from high microbial diversity.…”

Section: Microbial Communitymentioning

confidence: 80%

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

et al. 2019

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Oil palm empty fruit bunches (EFB) and palm oil decanter cake (DC) were used to investigate biogas production by using solid-state anaerobic co-digestion (SS-AcoD) with 15% total solid (TS) content. Solid state anaerobic digestion (SS-AD) using substrate to inoculum (S:I) ratio of 3:1, methane yields of 353.0 mL-CH4/g-VS and 101.5 mL-CH4/g-VS were respectively achieved from mono-digestion of EFB without oil palm ash (OPA) addition and of DC with 10% OPA addition under mesophilic conditions 35 °C. By adding 5% OPA to SS-AD using 3:1 S:I ratio under thermophilic conditions (55 °C), mono-digestion of EFB and DC provided methane yields of 365.0 and 160.3 mL-CH4/g-VS, respectively. Furthermore, SS-AcoD of EFB:DC at 1:1 mixing ratio (volatile solid, VS basis), corresponding to carbon to nitrogen (C:N) ratio of 32, gathering with S:I ratio of 3:1 and 5% ash addition, synergistic effect is observed together with similar methane yields of 414.4 and 399.3 mL-CH4/g-VS, achieved under 35 °C and 55 °C, respectively. According to first order kinetic analysis under synergistic condition, methane production rate from thermophilic operation is 5 times higher than that from mesophilic operation. Therefore, SS-AcoD could be potentially beneficial to generate biogas from EFB and DC.

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Section: Microbial Communitymentioning

confidence: 80%

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

et al. 2019

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“…Simply return HTL aqueous to the WWTP headworks would significantly increase aeration cost and may lead to toxicity impacts and exceed discharge limits due to high ammonia concentrations. Many studies have proposed to valorize HTL aqueous by AD, with a specific methane yield of 36-259 mL CH 4 /g COD (Hao et al, 2020;Posmanik et al, 2017b;Usman et al, 2019bUsman et al, , 2020P. Wang et al, 2021).…”

Section: ==========================mentioning

confidence: 99%

“…Therefore, efficient treatment of HTL aqueous is considered the critical step in HTL-AD configuration. Studies have shown that adding granular activated carbon (Usman et al, 2019b) and hydrochar (Usman et al, 2020) to diluted HTL aqueous for AD could improve methane yield by up to 30 and 52%, respectively, due to enhanced degradation of aromatic, N-heterocyclic, and phenolic compounds. A promising treatment was achieved by , who used struvite precipitation for ammonia removal (82%) and biochar for phenols removal (70%) and reached a specific methane yield up to 225 mL CH 4 /g COD from non-diluted HTL aqueous by mesophilic AD, while only struvite precipitation could achieve a specific methane yield up to 115 mL CH 4 /g COD.…”

Section: ==========================mentioning

confidence: 99%

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

et al. 2021

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“…Additionally, the microbial community structures were directly related to the degradation efficiency of the organic wastewater. Microbial community analysis revealed high amounts of bacteria capable of degrading N-heterocyclic and aromatic compounds such as Syntrophorhabdus and Synergistes (Usman et al, 2019). Si et al (2016) also reported numerous microorganisms associated with acidification and detoxification in long-term continuous AD experiments.…”

Section: Introductionmentioning

confidence: 99%

“…Diverse methods have been employed to improve the anaerobic methanogenic potential of HTLWW including physical absorption, photocatalytic oxidation, and ozonation. Several studies have also revealed that physical adsorbents such as activated carbon and zeolite increase the cumulative methane yield and mitigate inhibition by toxicants (Zheng et al, 2016;Usman et al, 2019). Photocatalyzed HTLWW can enhance methane production and the COD removal rate, increasing the total energy recovery to 66.7% (Quispe-Arpasi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Continuous Anaerobic Digestion of Wood Vinegar Wastewater From Pyrolysis: Microbial Diversity and Functional Genes Prediction

Hua

Fan

Zhao

et al. 2020

Front. Bioeng. Biotechnol.

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Wood vinegar wastewater (WVWW) is the main by-product of biomass pyrolysis process, which is more suitable to use anaerobic digestion (AD) to achieve energy recovery due to its large amount of organic matter. In this study, the up-flow anaerobic sludge bed (UASB) reactor was used to investigate the continuous anaerobic transformation of WVWW with gradient concentrations (0.3, 0.675, 1, 2, 3, 4, 5, 6, and 7 g COD/L). Then, the changes of microbial community, diversity index and functional gene were analyzed in detail. The results revealed that WVWW showed good AD performance in continuous fermentation. WVWW of organic loading rate (OLR) of >8.58 g COD/L•d showed severe inhibition on biodegradability and methane production, which is mainly due to the toxic substances as compared with the control group. The bacterial communities were dominated by phyla of Chloroflexi, Firmicutes, Proteobacteria, Acidobacteria, Synergistetes, and Actinobacteria. The gene abundances related to energy production, carbohydrate transport and metabolism were relatively high, which are mainly responsible for carbon forms conversion and carbohydrate degradation. This study will provide a basis for the screening and enrichment of functional bacteria and genes.

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Molecular and microbial insights towards understanding the anaerobic digestion of the wastewater from hydrothermal liquefaction of sewage sludge facilitated by granular activated carbon (GAC)

Cited by 96 publications

References 58 publications

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

Continuous Anaerobic Digestion of Wood Vinegar Wastewater From Pyrolysis: Microbial Diversity and Functional Genes Prediction

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