The effects of digestate pyrolysis liquid on the thermophilic anaerobic digestion of sewage sludge — Perspective for a centralized biogas plant using thermal hydrolysis pretreatment

Hämäläinen, Anna; Kokko, Marika; Chatterjee, Pritha; Kinnunen, Viljami; Rintala, Jukka

doi:10.1016/j.wasman.2022.05.013

Cited by 10 publications

(4 citation statements)

References 37 publications

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“…Capodaglio et al [106] utilized SS as a raw material to produce methane gas, and biohydrogen from sludge fermentation can be used as a clean fuel. Hamalainen et al [107] have studied the hydrothermal carbonization of SS, which shows that the generated biogas can be upgraded by a membrane filtration system, to produce biomethane liquefied into liquefied biogas as a transportation fuel that can be used for energy recovery. The following are the challenges for SS and RM in terms of energy storage:…”

Section: Challengesmentioning

confidence: 99%

A Mini Review on Sewage Sludge and Red Mud Recycling for Thermal Energy Storage

Xiong,

Zhang,

Zhao

et al. 2024

Energies

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Sewage sludge and red mud, as common industrial waste, have become a research hotspot in the field of achieving carbon peaking and carbon neutrality, reducing carbon emissions, and solving environmental problems. However, their treatment and disposal have always been a difficult problem in the environmental field. Utilizing these two materials for thermal energy storage can not only improve energy utilization efficiency but also further reduce carbon emissions during their treatment process, providing a new approach for sustainable development in the industrial sector. This article summarizes the research progress for the resource recovery of sewage sludge and red mud for direct thermal energy recovery and composite phase change energy storage. After proper treatment, sludge and red mud can be directly used as energy storage materials. In addition, sludge and red mud can be combined with phase change materials to prepare composite materials with an excellent energy storage performance. This composite has broad application prospects in fields such as solar energy utilization and building energy efficiency. However, there are still some challenges and issues in this resource recovery and utilization, such as potential environmental pollution during the treatment process, the long-term stability of energy storage materials, and cost-effectiveness, which require further research and resolution. The purpose of this paper is to evaluate the potential of sewage sludge and red mud as energy storage materials, to explore their feasibility and advantages in practical applications, and to reveal the research progress, technical challenges, and future development directions of these two materials in the field of thermal energy storage.

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Section: Challengesmentioning

confidence: 99%

A Mini Review on Sewage Sludge and Red Mud Recycling for Thermal Energy Storage

Xiong,

Zhang,

Zhao

et al. 2024

Energies

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“…In all cases, oxygen-free conditions are maintained [174]. The pyrolysis of digested and mechanically dewatered MSS has been widely studied and described in the literature [237][238][239][240][241][242][243]. However, such MSS must be further dehydrated by drying before pyrolysis treatment to avoid the need for recondensation with the formation of a highly polluting organic bituminous phase, which is very difficult to handle due to its unfavorable rheological properties.…”

Section: Thermal Treatments (Tt)mentioning

confidence: 99%

Evolution and Prospects in Managing Sewage Sludge Resulting from Municipal Wastewater Purification

Giacomo¹,

Romano

2022

Energies

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Municipal sewage sludge is the residual material produced as a waste of municipal wastewater purification. It is a sophisticated multi-component material, hard to handle. For many years, it has been landfilled, incinerated, and widely used in agriculture practice. When unproperly discharged, it is very polluting and unhealthy. The rapidly increasing global amount of municipal sewage sludge produced annually depends on urbanization, degree of development, and lifestyle. Some diffused traditional practices were banned or became economically unfeasible or unacceptable by the communities. In contrast, it has been established that MSS contains valuable resources, which can be utilized as energy and fertilizer. The objective of the review was to prove that resource recovery is beneficially affordable using modern approaches and proper technologies and to estimate the required resources and time. The open sources of information were deeply mined, critically examined, and selected to derive the necessary information regarding each network segment, from the source to the final point, where the municipal sewage sludge is produced and disposed of. We found that developed and some developing countries are involved with ambitious and costly plans for remediation, the modernization of regulations, collecting and purification systems, and beneficial waste management using a modern approach. We also found that the activated sludge process is the leading technology for wastewater purification, and anaerobic digestion is the leading technology for downstream waste. However, biological technologies appear inadequate and hydrothermal carbonization, already applicable at full scale, is the best candidate for playing a significant role in managing municipal sewage sludge produced by big towns and small villages.

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“…Some studies on the subject have shown very good results of biogas production from treatment sludge samples by using an anaerobic system. In addition, many studies have indicated that pretreatment applications give positive results of biogas production from both treatment sludge and different raw materials (Wang et al, 2022;Hämäläinen et al, 2022;Akçakaya et al, 2022;Gülşen Akbay et al, 2022;Zeng et al, 2022;Gülşen Akbay et al, 2021;Zhao et al, 2021;Mainardis et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Investigation and Modeling of Biogas Production Potential from Urban and Fruit Juice Wastewater Treatment Plant Sludge through Pretreatment

Bayrak Işık

2024

Turkish JAF Sci.Tech.

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In this study, the effect of pretreatments applied to the sewage sludge of the Tokat Municipality wastewater treatment plant (WTP), the sewage sludge of the packaged wastewater treatment plant (PWTP) of a fruit juice production plant, and the aqueous phases of their mixtures on biogas production was investigated. Chemical, thermal (microwave (MW) and hot plate (HP)) and chemical-thermal pretreatments were applied to these sludge samples. Considering the results in all samples, the highest biogas production amount and efficiency were found in the pre-biogas-unit aqueous phase of the sewage sludge of the Tokat WTP, which was applied 20% H2SO4+10-minute (min) thermal MW pretreatment, with 667.51 ml and 396.34 ml biogas/g water dissolved SM value, respectively. Statistical analyses included the Duncan comparison test for cumulative biogas production efficiencies at the end of 65 days and the maximum exponential increase function and Gompertz equations for cumulative biogas amounts. Accordingly, the most appropriate model was tried to be determined. The electricity generated at the end of the 22-day incubation period at the facility meets 36% of the electricity needed by the Tokat WTP. At the end of the experimental studies (20% H2SO4+10 min thermal MW pretreatment), it can be said according to the 22-day biogas data that the biogas production efficiency increased by 3.41 times, this would meet all the electricity needed by the facility, and that there would be an extra 23% electricity generation of the total generation. Mixing and using fruit juice PWTP and WTP treatment sludge in the production of biogas will enable both the utilization of this waste in biogas production and the weakening and reduction of high parameter values, which sometimes cause problems in the sludge discharged from the Tokat WTP due to urban wastewater treatment, to acceptable limits.

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The effects of digestate pyrolysis liquid on the thermophilic anaerobic digestion of sewage sludge — Perspective for a centralized biogas plant using thermal hydrolysis pretreatment

Cited by 10 publications

References 37 publications

A Mini Review on Sewage Sludge and Red Mud Recycling for Thermal Energy Storage

A Mini Review on Sewage Sludge and Red Mud Recycling for Thermal Energy Storage

Evolution and Prospects in Managing Sewage Sludge Resulting from Municipal Wastewater Purification

Investigation and Modeling of Biogas Production Potential from Urban and Fruit Juice Wastewater Treatment Plant Sludge through Pretreatment

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