Unveiling the dual faces of chitosan in anaerobic digestion of waste activated sludge

Yin, Mengyu; Chen, Hongbo

doi:10.1016/j.biortech.2021.126182

Cited by 28 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of chitosan's participation in anaerobic digestion, which is the subject of research in this study, the increase in methane production can be attributed not only to its developed surface area but also to its specific chemical structure and the action of this material [21]. Yin and Chen 2022 proved the large effect of the contribution of chitosan (CTS) on the AD process of waste activated sludge (WAS) [24]. The results showed that the methane production potential of WAS was positively correlated with the CTS content.…”

Section: Discussionmentioning

confidence: 85%

“…Microbiological community analysis showed that chitosan-Fe3O4 enriched the abundance of Peptoclostridium and Methanosaeta participated in direct interspecies electron transfer. Thus, the addition of the chitosan-Fe3O4 [25], as well as chitosan [24] or magnetite [26] itself, can promote a direct interspecies electron transfer pathway to maintain stable methanogenesis. Materials thus increase the abundance of methanogens, which naturally contributes to increased methane production [17].…”

Section: Discussionmentioning

confidence: 99%

“…It is worth mentioning that nano chitosan, compared to traditional microporous materials used in separation, is characterised by better performance, which can be attributed to its developed specific surface area and higher adsorption capacity [22,23]. According to the literature, some studies have already been carried out, demonstrating the strong biocatalytic effect of chitosan and chitosan-magnetite and chitosan-titania-magnetite systems on biogas production and methanogenic activity [24][25][26]. It should be noted that chitosan does not exhibit all the characteristics of a universal microbial carrier (it swells in water, is not mechanically robust), but can nevertheless effectively influence the course and efficiency of the AD process due to its morphological, microstructural and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Chitosan/Perlite System as a Microbial Carrier in Anaerobic Digestion of Food Waste: Characteristics and Impact of the Additive Materials

Pilarska,

Marzec-Grządziel,

Makowska

et al. 2024

Preprint

View full text Add to dashboard Cite

The article aims to present the results of research on anaerobic digestion (AD) of waste wafers (WF - control) and co-substrate system - waste wafers and cheese (WFC - control), combined with digested sewage sludge. The aim of the study was to evaluate the physicochemical parameters of the chitosan/perlite (Ch/P; 3:1) carrier material and to verify its effect on the directions of change of the bacterial microbiome, removal kinetics of organic matter and AD process efficiency. The experiment was conducted in a laboratory, in a periodical mode of operation of bioreactors, under mesophilic conditions. The results of analyses of morphological-dispersive, spectroscopic, adsorption, thermal and microbiological properties confirmed that the tested carrier material can be an excellent option to implement in biotechnological processes, especially in anaerobic digestion. The microstructural properties of the carrier were influenced by both components: perlite determined the development of the specific surface area, while chitosan shaped the porosity of the system. The thermal properties were determined by the less heat-resistant component, present in a threefold higher weight proportion, i.e. chitosan. The evaluation of quantitative and qualitative changes in the genetic diversity of bacterial communities, carried out using Next Generation Sequencing (NGS), showed that the material has a modifying effect on the bacterial microbiome. Amount of bacteria from phyla Actinobacteria, Bacteroidetes, Campilobacterota, Chloroflexi, Euryarchaeota, Planctomycetes, and Proteobacteria decreased while Firmicutes, Synergistetes, and Thermotogae increased during the course of the experiment. The shapes of the FT-IR spectra indicated a dependence of the degradation rate on both the presence of the carrier and the cosubstrate system. Monitoring of the course of AD was carried out by measuring key parameters for the stability of the process: pH, VFA and VFA/TA ratio (volatile fatty acids/total alkalinity). As a result, an increase in the volume of biogas/methane produced, under the influence of the carrier, was recorded for WF-control by 12.05% and for WFC-control by 19.16%. The volume of methane for the WF-control increased from 351.72 m3 Mg-1 VS to 411.14 m3 Mg-1 VS, while for the cosubstrate sample it increased from 476.84 m3 Mg-1 VS to 518.08 m3 Mg-1 VS, confirming the validity of combining the respective cosubstrate with microbial carrier in anaerobic bioreactor.

show abstract

Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chitosan/Perlite System as a Microbial Carrier in Anaerobic Digestion of Food Waste: Characteristics and Impact of the Additive Materials

Pilarska,

Marzec-Grządziel,

Makowska

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Dose-response and type-dependent effects of antiviral drugs in anaerobic digestion of waste-activated sludge for biogas production

Wang,

Yang,

Cai

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

In the context of the COVID-19 pandemic, antiviral drugs (AVDs) were heavily excreted into wastewater and subsequently enriched in sewage sludge due to their widespread use. The potential ecological risks of AVDs have attracted increasing attention, but information on the effects of AVDs on sludge anaerobic digestion (AD) is limited. In this study, two typical AVDs (lamivudine and ritonavir) were selected to investigate the responses of AD to AVDs by biochemical methane potential tests. The results indicated that the effects of AVDs on methane production from sludge AD were dose- and type-dependent. The increased ritonavir concentration (0.05–50 mg/kg TS) contributed to an 11.27–49.43% increase in methane production compared with the control. However, methane production was significantly decreased at high lamivudine doses (50 mg/kg TS). Correspondingly, bacteria related to acidification were affected when exposed to lamivudine and ritonavir. Acetoclastic and hydrotropic methanogens were inhibited at a high lamivudine dose, while ritonavir enriched methylotrophic and hydrotropic methanogens. Based on the analysis of intermediate metabolites, the inhibition of lamivudine and the promotion of ritonavir on acidification and methanation were confirmed. In addition, the existence of AVDs could affect sludge properties. Sludge solubilization was inhibited when exposed to lamivudine and enhanced by ritonavir, perhaps caused by their different structures and physicochemical properties. Moreover, lamivudine and ritonavir could be partially degraded by AD, but 50.2–68.8% of AVDs remained in digested sludge, implying environmental risks. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-023-27045-7.

show abstract

Responses of Bacillus sp. under Cu(II) stress in relation to extracellular polymeric substances and functional gene expression level

Wang

Yin

et al. 2023

Environ Sci Pollut Res

View full text Add to dashboard Cite

Unveiling the dual faces of chitosan in anaerobic digestion of waste activated sludge

Cited by 28 publications

References 45 publications

Chitosan/Perlite System as a Microbial Carrier in Anaerobic Digestion of Food Waste: Characteristics and Impact of the Additive Materials

Chitosan/Perlite System as a Microbial Carrier in Anaerobic Digestion of Food Waste: Characteristics and Impact of the Additive Materials

Dose-response and type-dependent effects of antiviral drugs in anaerobic digestion of waste-activated sludge for biogas production

Responses of Bacillus sp. under Cu(II) stress in relation to extracellular polymeric substances and functional gene expression level

Contact Info

Product

Resources

About