Comparative Studies Between Hydrothermal Carbonation and Torrefaction for Biofuel Production from Poultry Litter

Isemin, Rafail; Mikhalëv, A. V.; Milovanov, O. Yu.; Климов, Д. В.; Muratova, N. S.; Krysanova, K. O.; Teplitskii, Yuri; Greben'kov, A. Zh.; Kogh-Tatarenko, V.S.

doi:10.1145/3314367.3314372

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Fresh dried corncobs used in this study for making electrodes were obtained from a farm in Stuttgart, Germany. The 2 liters of wet torrefaction wastewater (WTW) used in this study was obtained from facilities of Tambov State Technical University Biocenter (Tambov, Russian Federation) [25]. The WTW was collected in plastic bottles and stored in a freezer set at -18 • C in the Department of Conversion Technologies of Biobased Resources, Institute for Agricultural Engineering, University of Hohenheim, Germany, until required for analyses.…”

Section: Raw Materialsmentioning

confidence: 99%

Electricity generation in microbial fuel cell from wet torrefaction wastewater and locally developed corncob electrodes

et al. 2021

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Corncob pyrochar activated with steam (CCA) and nonactivated corncob pyrochar (NCC) were produced and characterized. The performance of the best material was tested in a dual-chambered microbial fuel cell (MFC) as an electrode for bioelectricity generation using wet torrefaction wastewater as substrate. Pyrolysis of 80.3 g of dried corncobs was carried out at 600 • C under a constant N 2 flow of 3 L min −1 for 30 min and the resulting pyrochar was activated using steam also at 600 • C. Voltage and current outputs from the MFC were recorded daily for 18 days. The proximate and Brunauer-Emmett-Teller (BET) surface area analyses revealed that CCA had the highest fixed carbon content of 71.9 % and higher surface area of 104.0 m 2 g −1 respectively. A larger pore diameter of 1.9 × 10 −3 µm was also recorded with the CCA than 1.2 × 10 −3 µm for NCC. The MFC produced a maximum power output of 21.5 mW. The physicochemical analyses of the wastewater effluent revealed an increased electrical conductivity from 1724 to 3460 µS cm −1 with a significant decrease by 91.9% in the total organic carbon (TOC) from 3700 to 298 mg L −1 . Steam activation increases the surface area, porosity, stability and redox reversibility of the corncob pyrochar. Therefore, steam-activated corncob pyrochar performed well in MFCs due to the high power output observed. K E Y W O R D Sbiobased corncob pyrochar, electrodes in MFC, power output of MFC, steam activation, wastewater This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: Raw Materialsmentioning

confidence: 99%

Electricity generation in microbial fuel cell from wet torrefaction wastewater and locally developed corncob electrodes

et al. 2021

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“…61,64 Hydrothermal conversion has become a good technique as an alternative for optimising biomass valorisation; however, to our best knowledge, few researchers have made use of PL treatment using this technology. Isemin et al 47 carried out an assay where they showed the results of comparative experiments between the low-temperature pyrolysis method (torrefaction) and HTC. Table 2 presents the operating parameters for both processes.…”

Section: Hydrothermal Conversionmentioning

confidence: 99%

Biorefineries at poultry farms: a perspective for sustainable development

Odales-Bernal

Schulz

González

et al. 2020

J of Chemical Tech & Biotech

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Poultry litter (PL) is one of the drier and bulkier manures produced in intensive agriculture. Land spreading is considered the most common treatment option for PL; however, this causes large atmospheric greenhouse emissions and consequently a high negative environmental impact. PL has several factors that limit its sustainable use as an energy source, and thus there is still a need for more studies about sustainable waste management. The paper aims at: (i) proposing sustainable pathways in order to maximise the PL valorisation process, based on previous experiences described in the literature; and (ii) showing the advantages of reforming poultry farms into biorefineries in Cuba. Combinations of techniques are used to increase PL valorisation, but only by modulating the theoretical data has an improvement occurred. In this work, pathways for thermo‐ and bioconversion processes are proposed which involve four major technologies for converting PL into useful energy and fertiliser, being pyrolysis/gasification, hydrothermal carbonisation and anaerobic digestion as key conversion technologies. Including technologies for nutrient recovery in the proposed pathways would allow better agricultural applications. The treatment of PL in biorefineries in Cuba would have a positive impact on the economy through income generation and savings resulting from reductions in imports (i.e. fossil fuels and agrochemicals), employment creation, improved living conditions and development in rural communities. Future studies should be aimed at evaluating the various proposed pathways in order to maximise the PL valorisation process, in addition to a marketing study of the products generated through the biorefineries at poultry farms. © 2020 Society of Chemical Industry (SCI)

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“…Among these treatments, torrefaction has relatively lower reaction temperatures; however, the higher heating value (HHV) of the biochar produced from this process is also relatively lower. Currently, carbonization may be the most used technique to produce biochar because of its higher HHV . In general, the carbonization process can be divided into two types of reactions: one is the non-oxidative (reaction with inert gas) reaction process, and the other is the oxidative process (reaction with oxygen or air) .…”

Section: Introductionmentioning

confidence: 99%

“…Currently, carbonization may be the most used technique to produce biochar because of its higher HHV. 9 In general, the carbonization process can be divided into two types of reactions: one is the non-oxidative (reaction with inert gas) reaction process, and the other is the oxidative process (reaction with oxygen or air). 10 Furthermore, the physical and chemical properties of biochar can be improved by suitable activation (e.g., physical, chemical, hydrothermal, or microwave-induced/ assisted activation), thus giving a new name as "activated biochar".…”

Section: Introductionmentioning

confidence: 99%

Novel Renewable Double-Energy System for Activated Biochar Production and Thermoelectric Generation from Waste Heat

et al. 2020

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In this study, a novel renewable double-energy system, coupling activated biochar production and thermoelectric generation, is conducted and demonstrated. In the installed 13 thermoelectric modules (TEMs), they are partitioned into three groups of 3, 4, and 6 TEMs. The temperature difference across the TEMs depends upon the number of TEMs and is ranked as 3 TEMs > 4 TEMs > 6 TEMs. By harvesting the waste heat from the carbonization of water chestnuts, the greatest mean output power of single TEMs is 14.1 W and the mean output power of the installed 13 TEMs at the carbonization time of 10–30 min is 8.8 W. The higher heating value of produced activated biochar is 28.17 MJ kg–1, accounting for 42.7% improvement in the calorific value when compared to its untreated counterpart. The analysis also suggests that heavy metals contained in this coal-like renewable solid fuel are fairly low. The activated biochar possesses high hydrophilicity and specific surface area (430 m2 g–1), and a large portion of pore sizes is smaller than 2 nm. The analyses of attenuated total reflectance spectrometry, X-ray diffractometry, and thermogravimetry also clearly indicate the impact of carbonization on the biomass structure. Overall, the produced activated biochar is suitable for an alternative fuel, absorbent, and soil amendment.

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Comparative Studies Between Hydrothermal Carbonation and Torrefaction for Biofuel Production from Poultry Litter

Cited by 3 publications

References 9 publications

Electricity generation in microbial fuel cell from wet torrefaction wastewater and locally developed corncob electrodes

Electricity generation in microbial fuel cell from wet torrefaction wastewater and locally developed corncob electrodes

Biorefineries at poultry farms: a perspective for sustainable development

Novel Renewable Double-Energy System for Activated Biochar Production and Thermoelectric Generation from Waste Heat

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