Microbial dynamics during anaerobic digestion of sewage sludge combined with food waste at high organic loading rates in immersed membrane bioreactors

Qin, Shiyi; Wainaina, Steven; Liu, Huimin; Mahboubi, Amir; Pandey, Ashok; Zhang, Zengqiang; Awasthi, Mukesh Kumar; Taherzadeh, Mohammad J.

doi:10.1016/j.fuel.2021.121276

Cited by 73 publications

(23 citation statements)

References 42 publications

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“…The bacterial phyla identified were Firmicutes (14.9-36.3%), Proteobacteria (7.8-32.9%), Bacteroidetes (7.4-20.0%), Actinobacteria (2.9-14.0%), Chloroflexi (2.5-9.4%), and Synergistetes (1.8-3.9%), while the archaeal phylum identified was Euryarchaeota (11.9-37.5%). This is consistent with previous studies, in which Firmicutes, Proteobacteria, Bacteroidetes, Actinobacteria and Euryarchaeota have been reported as the predominant microbial phyla during the AD of both food wastes and OFMSW (Chaudhari et al, 2011;Yi et al, 2014;Qin et al, 2021;Tyagi et al, 2021;Zheng et al, 2021). Furthermore, 26 genera (24 bacterial and two archaeal) were identified in these samples (Figure 5C); these results are discussed in the following section.…”

Section: Microbiome Analysissupporting

confidence: 92%

“…Firmicutes, Chloroflexi, Actinobacteria, Bacteroidetes, and Synergistetes have been reported to have acidogenic activity (Zhang et al, 2010;Khatami et al, 2021;Qin et al, 2021). Among these, Firmicutes was the most abundant (14.9-36.3%) throughout T1-T3 in all strata samples, followed by Actinobacteria (2.9-14.0%).…”

Section: Acidogenesismentioning

confidence: 96%

“…Among the Firmicutes identified, Clostridium spp. are some of the most abundant fermentative bacteria reported during acidogenesis (Iltchenco et al, 2021;Qin et al, 2021), due to their ability to convert amino acids into VFAs, such as acetic acid, as well as H 2 (Amani et al, 2010;Xiao et al, 2013;Tyagi et al, 2021). Clostridium (5.7-27.1%) was among the most abundant bacterial genus identified throughout T1-T3 for all strata.…”

Section: Acidogenesismentioning

confidence: 98%

“…As shown in Figure 6, the abundance of this genus increased in T2 then decreased in T3. Chloroflexi (2.5-9.4%) is a wellestablished acidogenic phylum, which is ubiquitous in most anaerobic digestion processes (Yi et al, 2014;Venkiteshwaran et al, 2015;Qin et al, 2021) and capable of organic compound degradation and glucose utilization (Qin et al, 2021). Chloroflexi was identified throughout T1-T3 with an increasing trend (as shown in Figure 6).…”

Section: Acidogenesismentioning

confidence: 99%

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A micro- and macro-scale look at the biochemical methanogenic potential of the organic fraction of municipal solid waste generated in a large city of a developing country

Ibarra-Esparza

Garibay

Lara-Topete

et al. 2022

Front. Environ. Sci.

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The management of municipal solid waste (MSW) is a complex and expensive task. This is especially the case in developing countries, where waste generation rates are continuously increasing and where current MSW management strategies are focused on inadequate practices, such as landfilling and incineration, which result in numerous health and environmental problems. The anaerobic digestion (AD) of MSW has been implemented worldwide as a solution to decrease the amount of waste ending up in landfills. This process allows for the recovery of energy from the organic fraction of MSW (OFMSW) in the form of biogas, which is largely composed of methane. Therefore, the goal of the present study was to evaluate the biochemical methane potential (BMP) of the OFMSW generated within different socioeconomic strata of the Metropolitan Area of Guadalajara (MAG), Mexico. From a microscale perspective, the microbial communities within the experimental AD system were analyzed using high-throughput sequencing of the 16S rRNA gene to assess the relationship between these communities and the biogas composition. This microbial identification revealed a typical AD composition consisting of the following six phyla: Actinobacteria, Bacteroidetes, Chloroflexi, Euryarchaeota, Firmicutes, and Proteobacteria. Furthermore, through the identification of Methanobacterium and Methanosaeta, two methanogenesis pathways (hydrogenotrophic and acetoclastic) were pinpointed. From a macroscale perspective, a multi-stage Gompertz kinetic model was used to describe cumulative biogas production. This model considered the complex nature of the OFMSW substrate in order to estimate the potential level of biogas production in the MAG using a weighted average that was based on the size of the population in each socioeconomic stratum evaluated (732.8 mL⋅g−1 VS). This novel contribution to the literature provides an estimation of the potential economic, energetic, and environmental benefits of treating the OFMSW produced in the MAG through AD. Through this approach, an estimated 8.5 MWh·year−1 of electrical power could be produced, translating into 1.13 million USD of yearly revenue and resulting in reduced GHG emissions (10,519 tonne CO2eq⋅year−1).

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Section: Microbiome Analysissupporting

confidence: 92%

Section: Acidogenesismentioning

confidence: 96%

Section: Acidogenesismentioning

confidence: 98%

Section: Acidogenesismentioning

confidence: 99%

See 2 more Smart Citations

A micro- and macro-scale look at the biochemical methanogenic potential of the organic fraction of municipal solid waste generated in a large city of a developing country

Ibarra-Esparza

Garibay

Lara-Topete

et al. 2022

Front. Environ. Sci.

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show abstract

“…Outputs may vary according to the processing system [66] and research-led system improvement continues to build capacity and add value to household food waste both at policy and practical levels [67][68][69][70]. For example, industrial waste management is looking at how household food waste can be used to deal with biological sludge from oil refineries [71], or sewage [72,73] or in bioproduct development [74]. In 2016/17, biogas provided around 0.5% of Australia's electricity with an estimated 9% capacity at that time [75].…”

Section: Household Food Waste Processing Systems (The Outputs)mentioning

confidence: 99%

Out of Sight, Out of Mind: Using Post-Kerbside Organics Treatment Systems to Engage Australian Communities with Pro-Environmental Household Food Waste Behaviours

et al. 2022

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Dealing with the wicked problem of global food waste and loss is a complex and challenging area. In Australia, increased political will has landed the diversion of domestic food waste from landfill squarely at the feet of local government (councils), often requiring significant change to kerbside collections systems. This paper discusses how post-kerbside household food waste treatment systems can encourage pro-environmental behaviours. To achieve this, current food waste literature is examined against kerbside domestic waste collection measurable outcomes (diversion rates, system uptake and contamination rates). The hypothesis is that specific interventions can establish, or rebuild, community trust, responsibility and pro-environmental behaviours around food waste avoidance and diversion. Two post-kerbside systems—commercial composting and anaerobic digestion—provided the framework. Two themes emerged from the study: (1) the benefits of connecting the community with the interactions of household food waste inputs with post-treatment outputs (compost, soil conditioners, digestates and biogases); and (2) providing engaged communities with pathways for sustainable, pro-environmental actions whilst normalizing correct kerbside food waste recycling for the less engaged (habitual behaviours, knowledge and cooperation). The paper contributes to understanding how councils can connect their communities with the issues of household food waste.

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Advancements in biodigester technology through the study of anaerobic digestion using statistical optimization and bioaccelerators

Monteiro,

Mariano,

Padilha

et al. 2023

CLEAN Soil Air Water

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Advances in biodigester technology have been promoted by the growing study of anaerobic digestion, with the aim of improving processes related to the utilized waste load. This research used the statistical tool Central Composite Rotatable Design to optimize the combination of microorganisms and enzymes for biodigestion. The experiment involved testing two microorganisms (EA and EB) and five enzymes (amylase, protease, lipase, cellulase, and amyloglucosidase) with food waste from nearby restaurants and WWTP sludge as an inoculant. The experiment was set up as Central Composite Rotatable Design (CCRD) 26‐1, with 50 trials and a concentration of 14.5 g of volatile solids per liter. The dependent variables of cumulative biogas production (BG) and cumulative biomethane production (BM) were evaluated. The results showed that the independent variables EB and CA had negative and significant effects on BG and BM production. With optimized process conditions, the bioaccelerator significantly improved BG and BM responses compared to control trials by 72% and 88%, respectively. The biodigestion technique is a viable option for the treatment of organic waste, and the use of bioaccelerators may be a promising approach to improving biodigestion processes. This study contributes to the ongoing research on anaerobic digestion and biodigester technology, which seeks to improve the sustainable management of organic waste while producing renewable energy.

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Microbial dynamics during anaerobic digestion of sewage sludge combined with food waste at high organic loading rates in immersed membrane bioreactors

Cited by 73 publications

References 42 publications

A micro- and macro-scale look at the biochemical methanogenic potential of the organic fraction of municipal solid waste generated in a large city of a developing country

A micro- and macro-scale look at the biochemical methanogenic potential of the organic fraction of municipal solid waste generated in a large city of a developing country

Out of Sight, Out of Mind: Using Post-Kerbside Organics Treatment Systems to Engage Australian Communities with Pro-Environmental Household Food Waste Behaviours

Advancements in biodigester technology through the study of anaerobic digestion using statistical optimization and bioaccelerators

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