Effects of trace element addition on process stability during anaerobic co-digestion of OFMSW and slaughterhouse waste

Moestedt, Jan; Nordell, Erik; Yekta, Sepehr Shakeri; Lundgren, Jan T.; Martí, Magalí; Sundberg, Carina; Ejlertsson, Jörgen; Svensson, Bo; Björn, Annika

doi:10.1016/j.wasman.2015.03.007

Cited by 111 publications

(53 citation statements)

References 48 publications

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“…1h), which was in the same range as previously reported values for reactor liquids of processes digesting sewage sludge (Baudez et al 2011(Baudez et al , 2013. It should also be noted that in addition to TS, changes in parameters such as, e.g., particle size, polymeric substances, and ion concentrations, may have contributed to changes in viscosity of the R1 upon codigestion of OFMSW as an additional substrate (Nges et al 2012;Moestedt et al 2016;Lindorfer and Demmig 2016). Accordingly, increased energy consumption for mixing of reactor material due to elevated OFMSW loading is expected as an effect of co-digestion of OFMSW with PWASS.…”

Section: Resultssupporting

confidence: 84%

“…Thus, the biogas production at WWTP could be improved substantially by supplementing organic wastes other than sewage sludge to the anaerobic digester units (Aichinger et al 2015;Kaan Dereli et al 2010). The organic fraction of municipal solid waste (OFMSW) is an attractive substrate for anaerobic digestion due to its high abundance and availability (e.g., Mata-Alvarez et al 2000;Kaan Dereli et al 2010;Moestedt et al 2016) and a biogas potential of 400-500 ml gVS −1 (Hansen et al 2007). Furthermore, a directive by the Swedish government enforcing biological treatment of 50% of the OFMSW from year 2018 (Swedish Ministry of Environment 2012) has motivated the Swedish municipalities to invest in source separation of OFMSW.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of OFMSW co-digestion with sewage sludge for increasing biogas production at wastewater treatment plants

Björn

Yekta

Ziels

et al. 2017

Euro-Mediterr J Environ Integr

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Sweden has the ambition to increase its annual biogas production from the current level of 1.9 to 15 TWh by 2030. The unused capacity of existing anaerobic digesters at wastewater treatment plants is among the options to accomplish this goal. This study investigated the feasibility of utilizing the organic fraction of municipal solid waste (OFMSW) as a co-substrate, with primary and waste-activated sewage sludge (PWASS) for production of biogas, corresponding to 3:1 ratio on volatile solid (VS) basis. The results demonstrated that co-digestion of OFMSW with PWASS at an organic loading rate of 5 gVS l −1 day −1 has the potential to increase the biogas production approximately four times. The daily biogas production increased from 1.0 ± 0.1 to 3.8 ± 0.3 l biogas l −1 day −1 , corresponding to a specific methane production of 420 ± 30 Nml methane gVS −1 during the laboratory experiment. Co-digestion of OFMSW with PWASS showed a 50:50 distribution of hydrogenotrophic and aceticlastic methanogens in the digester and enhanced the turnover kinetics of intermediate products (acetate, propionate, and oleate). Practical limitations potentially include the need for sludge dewatering to maintain a sufficient hydraulic retention time (17 days in this study), as well as additional energy consumption for mixing due to an increased sludge apparent viscosity (from 1.8 ± 0.1 to 45 ± 4.8 mPa*s in this study) at elevated OFMSW-loading rates.

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Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Feasibility of OFMSW co-digestion with sewage sludge for increasing biogas production at wastewater treatment plants

Björn

Yekta

Ziels

et al. 2017

Euro-Mediterr J Environ Integr

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“…Biogas production can proceed at different temperatures, but in industrial production is typically set to mesophilic (35-42 C) or thermophilic (46-60 C). Biogas production can also proceed at psychrophilic temperature (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) C) [56]. The temperature and stirring mode chosen depend on the type of process, substrate and other operating parameters (see Notes 18 and 19).…”

Section: Start-up and Operation Of The Reactormentioning

confidence: 99%

“…ammonia inhibition [39,86,137]. Addition of trace metals has given positive results with various types of substrate, such as food waste [16,43], crop material [87] and stillage [88]. Cobalt, nickel, molybdenum and selenium are suggested to be critical to process performance, but other metals can also be important [89].…”

Section: Ph Is An Important Parameter Influencing Methane Productionmentioning

confidence: 99%

“…Some materials work well as a single substrate, while others can only be used during co-digestion with other substrates that result in favourable nutrient and water content and dilution of potential inhibitors [7]. To ensure sufficient microbial activity, some materials and mixtures of materials may also have to be complemented with process additives such as iron, trace metals or buffering chemicals [15][16][17]136]. In addition to the nutrient composition, operating parameters such as pre-treatment method, load of input material, duration of degradation, process temperature and stirring are of critical importance and have to be set properly to ensure high activity and gas yields with minimised risk of inhibition or washout of critical functions and microorganisms [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Protocol for Start-Up and Operation of CSTR Biogas Processes

Schnürer

Bohn²,

Moestedt³

2016

Springer Protocols Handbooks

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There is currently a lack of consensus on how biogas processes should be started and run in order to obtain stable, efficient operation. Agreement on start-up and operating parameters would increase the quality of research, allow better comparison of scientific results and increase the applicability of new findings in a general perspective. It would also help full-scale operators avoid common costly mistakes during start-up and operation of biogas processes. The biogas protocol presented in this paper describes appropriate approaches for characterisation of substrate, determination of methane potential, formulation of a suitable substrate, start-up of reactors and monitoring and operation of the biogas process in CSTR reactors.

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The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities

Rezaei

Ebrahimi-Nik

Tedesco

et al. 2021

Biofuels Bioprod Bioref

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Large quantities of seaweed in marine environments and coastal areas can cause serious hygienic and environmental problems. Anaerobic digestion (AD) could provide a solution and could also be useful for the production of bioenergy and fertilizer. However, the AD of algae biomass has some limitations and further work is required on the process. To increase the efficiency of the process, batches of 350 mL feedstock containing seaweed biomass (Sargassum sp.), inoculum, and different dosages of sludge from drinking water treatment (DWTS) as a micronutrient source to improve biogas production were digested in a 500 mL glass reactor and under mesophilic conditions, leading to significantly enhanced methane production. The highest methane yield (199 NmL g −1 VS) was observed when 6 mg L −1 DWTS was added, which showed a 30% improvement compared with the control digester and accounted for a 249.4 kWh increase in net energy per ton. The biodegradability index also increased by 10% compared with the control after the addition of DWTS.

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Effects of trace element addition on process stability during anaerobic co-digestion of OFMSW and slaughterhouse waste

Cited by 111 publications

References 48 publications

Feasibility of OFMSW co-digestion with sewage sludge for increasing biogas production at wastewater treatment plants

Feasibility of OFMSW co-digestion with sewage sludge for increasing biogas production at wastewater treatment plants

Protocol for Start-Up and Operation of CSTR Biogas Processes

The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities

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