Enhancement of methanogenic performance by gasification biochar on anaerobic digestion

Qi, Qiuxian; Sun, Chen; Chicaiza, Cristhian; Zhang, Tengyu; Zhang, Jingxin; Tian, Hailin; He, Yiliang; Tong, Yen Wah

doi:10.1016/j.biortech.2021.124993

Cited by 68 publications

(23 citation statements)

References 38 publications

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“…As shown in Figure 3 a,b, bacteria that strongly correlated with NH 4 + -N, TN and HMs occupied an important position in the biological treatment of WWTPs and indirectly reduced the risk of hazards to human health and the environment by reducing the discharge of nitrogen, phosphorus, and HMs. Previous studies found that biochar enhanced the immediate promotion of anaerobic digestion performance, as well as nitrogen and phosphorus removal [ 55 ]. Based on these results, the addition of biochar might also be utilized to treat chemical wastewater, which could facilitate the removal of HMs [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

Characterization of Microbial Communities in Wastewater Treatment Plants Containing Heavy Metals Located in Chemical Industrial Zones

Zeng

Wang

Song

et al. 2022

IJERPH

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Water pollution caused by heavy metals (HMs) poses a serious risk to human health and the environment and can increase the risk of diabetes, cancer, and hypertension in particular. In this study, two full-scale wastewater treatment plants (WWTPs) in industrial zones in southern China were selected to analyze the microbial community structure, diversity, similarity, and differentiation in the anoxic/oxic (AO) and anoxic/oxic membrane bioreactor (AO-MBR) units under the stress of HMs. High-throughput sequencing showed that microbial diversity and abundance were higher in the AO process than in the AO-MBR process. In the two WWTPs, the common dominant phyla were Proteobacteria and Bacteroidetes, while the common dominant genera were Gemmatimonadaceae, Anaerolineaceae, Saprospiraceae, and Terrimonas. Manganese (Mn) and zinc (Zn) positively correlated with Saccharimonadales, Nakamurella, Micrococcales, and Microtrichales, whereas copper (Cu) and iron (Fe) positively correlated with Longilinea and Ferruginibacter. Additionally, the relative abundances of Chloroflexi, Patescibacteria, and Firmicutes differed significantly (p < 0.05) between the two processes. These results may provide comprehensive outlooks on the characterization of microbial communities in WWTPs, which could also help to reduce the potential environmental risks of the effluent from WWTPs located in industrial zones.

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Section: Resultsmentioning

confidence: 99%

Characterization of Microbial Communities in Wastewater Treatment Plants Containing Heavy Metals Located in Chemical Industrial Zones

Zeng

Wang

Song

et al. 2022

IJERPH

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“…In addition to acidified bacterial enrichment, the porous characteristics of biochar also facilitate the growth of methanogens such as Methanosaeta , Methanobacterium , Methanosarcina , and Methanolinea (Kumar et al 2021c ; Chen et al 2021a ). Interestingly, an increase in methanogenesis enzymatic activity, such as coenzyme F420, was observed in a biochar-added reactor (Qi et al 2021b ).…”

Section: Anaerobic Digestionmentioning

confidence: 99%

“…In addition to the adsorption process, biochar can be used to stimulate the microbial niche during anaerobic digestion, hence aiding in the degradation of micro/nano-plastics. Biochar, in particular, can improve direct interspecies electron transfer in anaerobic digestion operations by promoting the growth of Pseudomonas stutzeri and Pseudomonas putida , both of which are known as effective plastic biodegrading bacteria (Qi et al 2021b ).…”

Section: Anaerobic Digestionmentioning

confidence: 99%

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

et al. 2022

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In the context of climate change and the circular economy, biochar has recently found many applications in various sectors as a versatile and recycled material. Here, we review application of biochar-based for carbon sink, covering agronomy, animal farming, anaerobic digestion, composting, environmental remediation, construction, and energy storage. The ultimate storage reservoirs for biochar are soils, civil infrastructure, and landfills. Biochar-based fertilisers, which combine traditional fertilisers with biochar as a nutrient carrier, are promising in agronomy. The use of biochar as a feed additive for animals shows benefits in terms of animal growth, gut microbiota, reduced enteric methane production, egg yield, and endo-toxicant mitigation. Biochar enhances anaerobic digestion operations, primarily for biogas generation and upgrading, performance and sustainability, and the mitigation of inhibitory impurities. In composts, biochar controls the release of greenhouse gases and enhances microbial activity. Co-composted biochar improves soil properties and enhances crop productivity. Pristine and engineered biochar can also be employed for water and soil remediation to remove pollutants. In construction, biochar can be added to cement or asphalt, thus conferring structural and functional advantages. Incorporating biochar in biocomposites improves insulation, electromagnetic radiation protection and moisture control. Finally, synthesising biochar-based materials for energy storage applications requires additional functionalisation.

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“…Biochars have acquired various surface functional groups after pyrolysis at 500 C. The band at 1400 cm À1 may be caused by OeH in-plane bending and CeH bending, while the band at 3000 cm À1 represents the symmetric CH 3 stretching of the methoxy group, partially caused by OeH stretching [39]. The aromatic CH stretching region (900-700 cm À1 ), the oxygen-containing functional group region (1800-1000 cm À1 ), and the aliphatic CH stretching region between (3000-2700 cm À1 ) are the three main regions influencing anaerobic digestion performance [40]. Our data shows that the vibrations of the biogas residue biochar in these areas are higher than that of corn stover biochar and coconut shell biochar, implying that the corresponding groups are more abundant on the surface of biogas residue biochar.…”

Section: Evolution Of Ph Ammonia Nitrogen F420 Absorbance and Vfasmentioning

confidence: 99%

Enhancing thermophilic anaerobic co-digestion of sewage sludge and food waste with biogas residue biochar

Liu

Wang

Fang³

et al. 2022

Renewable Energy

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Enhancement of methanogenic performance by gasification biochar on anaerobic digestion

Cited by 68 publications

References 38 publications

Characterization of Microbial Communities in Wastewater Treatment Plants Containing Heavy Metals Located in Chemical Industrial Zones

Characterization of Microbial Communities in Wastewater Treatment Plants Containing Heavy Metals Located in Chemical Industrial Zones

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

Enhancing thermophilic anaerobic co-digestion of sewage sludge and food waste with biogas residue biochar

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