Temat: co-digestion - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Thermophilic Co-Digestion of Sewage Sludge and Brewery Spent Grain
Autorzy:: Lebiocka, Magdalena
Montusiewicz, Agnieszka
Szaja, Aleksandra
Rembisz, Sylwia
Nowakowska, Ewelina
Tematy:: anaerobic digestion
co-digestion
brewery spent grain
pre-treatment
milling; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/124244.pdf Link otwiera się w nowym oknie
Opis:: This study examined the effectiveness of thermophilic co-digestion of sewage sludge and milled/non-milled brewery spent grain. The experiments were performed in batch-mode to evaluate both the biogas potential and the biogas production rate. Five runs were carried out, one of them concerned the anaerobic digestion of sewage sludge (as control), whereas the others referred to the co-digestion of sewage sludge with addition of milled and nonmilled brewery spent grain at doses of 5 and 10 g. The runs were conducted under thermophilic conditions (temperature 55±1°C) and lasted for 21 days. The effectiveness of the process was assessed on the basis of the volatile solids removal, biogas potential and the rate of biogas production. The physiochemical composition of reactor feed and digestate were characterized. The addition of the brewery spent grain resulted in increase of the biogas potential, but a decrease in the volatile solids removal. In the case of biogas production rate, the highest value was recorded in the run with the addition of 10 g of milled and non-milled brewery spent grain (0.69 Ndm³dm^-3d^-1). There was no observed influence of milling on the thermophilic co-digestion effectiveness since the parameters specified revealed comparable values.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Co-digestion of waste from the salmon aquaculture sector with regional sewage sludge: effects on methane yield and digestate nutrient content
Autorzy:: Estevez, M. M.
Tomczak-Wandzel, R.
Akervold, K.
Tornes, O.
Tematy:: fish sludge
co-digestion
sewage sludge
methane
nutrients; Pokaż więcej
Wydawca:: Gdańska Szkoła Wyższa
Powiązania:: https://bibliotekanauki.pl/articles/1190195.pdf Link otwiera się w nowym oknie
Opis:: In Western Norway, the availability of aquaculture waste resources is relevant for both biogas production and nutrients recovery. In this study, fish sludge from the farming of salmon was tested as co-digestion substrate in the anaerobic digestion of municipal sewage sludge from different regional treatment plants. Additions of 5, 10, 25 and 30% of fish sludge in volume were evaluated. Fish sludge did not improve the methane yield of Grødaland sewage sludge. In contrast, Bergen plant’s sewage sludge yield increased up to 40% with additions of 25% fish sludge. Co-digestion mixtures are being further tested in semi-continuous reactors for its long-term process stability, methane yield, and the effects that fish sludge may have on the final digestate’s nutrient content.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study on Co-Digestion of Palm Oil Mill Effluent and Empty Fruit Bunches to Improve Biogas Production in Palm Oil Mill
Autorzy:: Amelia, Julfi Restu
Indraningtyas, Lathifa
Aguzaen, Annisa Azzahra
Hasanudin, Udin
Tematy:: biogas
co-digestion
empty fruit bunch
palm oil; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114431.pdf Link otwiera się w nowym oknie
Opis:: Utilization of empty fruit bunches (EFB) to increase biogas production could be developed through co-digestion of palm oil mill effluent (POME). Pre-treatment of EFB (shredding, grinding, and soaking) before it is utilized as a feedstock for biogas production is important to increase the biodegradability of EFB. The evaluation of the impact of EFB utilization on biogas production should be investigated to determine the optimum process conditions for biogas production from EFB and POME. This research consists of three steps: 1) Optimization of size of EFB and ratio of EFB-POME, 2) Optimization of hydrolysis and acidification retention time, and 3) Optimization of biogas production. The research result shows that co-digestion of EFB and POME increases biogas and methane production. Compared to POME only, co-digestion using POME and EFB (shredded 10%, shredded 15%, crushed 10%, and crushed 15%) is increasing biogas production in batch systems by 54.1%, 54.1%, 45.5%, and 75.2%, respectively. The research result also shows that in a continuous system with HRT for 25 days and similar feedstock, biogas production increased by 43.3%, 41.6%, 35.6%, and 62.6%, respectively, with methane concentrations maintained at about 60%. Co-digestion of EFB-POME with 15% crushed EFB is recommended to be applied in palm oil mills to increase biogas production.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Anaerobic Co-Digestion of Domestic Sewage Sludge with Food Waste: Incorporating Food Waste as a Co-Substrate Under Semi-Continuous Operation
Autorzy:: Aljbour, Salah H.
Al-Hamaiedeh, Husam
El-Hasan, Tayel
Hayek, Bassam O.
Abu-Samhadaneh, Khalid
Al-Momany, Salam
Aburawaa, Ayman
Tematy:: biogas
co-digestion
sludge
food waste
semi-continuous operation
methane; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/1955419.pdf Link otwiera się w nowym oknie
Opis:: Anaerobic co-digestion of domestic sewage sludge with food waste as a substrate for biogas production and as a mean for waste management was conducted. The food waste was incorporated into the bioreactor as a cosubstrate semi-continuously via replacement mode and addition mode of operations in ratios up to 50%. The methane gas yield under the replacement mode of operation ranged from 295 to 1358 ml/gVSadded and from 192 to 462 ml/gVSadded for the replacement mode of operation and the addition mode of operation, respectively. The results indicate that the methane gas yield increases along with the percentage share of food waste in the feed. Anaerobic co-digestion under semi-continuous operation enabled handling large organic loadings compared to batch co-digestion processes.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Anaerobic Co-Digestion of Sewage Sludge and Waste in High Solid State
Autorzy:: Aboulfotoh, Ahmed M.
Marie, Ahmed I.
El-Hefny, Rehab
Tematy:: anaerobic co-digestion
thermal pretreatment
hydrolysis
waste
food waste
sludge; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/2105288.pdf Link otwiera się w nowym oknie
Opis:: In this study, the effect of thermal pre-treatment (TP) on the physical characteristics and co-digestion of a mixture of food waste and sludge was investigated. The food waste (FW) to sewage sludge (SS) ratio used in this research is 1:2 (VS-based) to form a final concentration of 11.20%. The inoculum to substrate ratio was set at 1:1 (volumebased). Undoubtedly, the results show that TP has changed the physical characteristics of the food waste to sewage sludge mixture. The results show that the pretreatment increased the biogas production from 4385 ml for the untreated reactor to 5685 for the reactor R2(140) at 140 °C and the improvement in biogas production reaches 29.65% in the reactor R2(140) and the removal of volatile solids was 58.90%. Therefore, after the biomethane potential test, the temperature of 140 °C was found to be optimal in the production of biogas. The optimal condition is to use a mixture of pre-treated SS at the temperature of 140 °C and untreated FW, so TP is recommended to be used in anaerobic digestion of the mixture of food waste and sewage sludge.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Identification and Characterization of Potential Feedstock for Biogas Production in South Africa
Autorzy:: Sawyerr, Nathaniel
Trois, Cristina
Workneh, Tilahun
Tematy:: Cassava
fruit and vegetable
anaerobic co-digestion
biogas
methane theoretical production; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/124128.pdf Link otwiera się w nowym oknie
Opis:: Biogas is produced during anaerobic digestion (AD) of biodegradable organic materials and is considered a promising renewable energy resource. Feedstocks are essential to ensure the successful anaerobic digestion in biogas digesters. Therefore, the search of appropriate substrates has come into focus. In this study, we examined the potential substrates that could be used as feedstock for the successful operation of an anaerobic digester. The approach used in this study was to identify the potential feedstocks that can be converted into value-added products. The identification of the feedstocks was done based on classification and evaluation of the theoretical biogas and methane production during the digestion process. The results show that all the considered substrates exhibited the biogas theoretical yield, with cattle manure producing the highest yield (0.999 m³/kg VS), whereas the lowest biogas yield (0.949 m³/kg VS) was obtained from cassava peels. It was concluded that the use of cassava co-digested with fruit and vegetable waste as an alternative feedstock offers a greater potential in terms of biogas production and could thus be implemented in the biogas projects running with cow dungs inside South Africa, especially in rural communities.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Wpływ charakterystyki komunalnych osadów ściekowych na efekty kofermentacji z serwatką
Effect of municipal sewage sludge in results of co-digestion with whey
Autorzy:: Zielewicz, E.
Tytła, M.
Tematy:: kofermentacja
fermentacja metanowa
osady ściekowe
serwatka kwaśna
biogaz
co-digestion
digestion
sludge
acid whey
biogas; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/372197.pdf Link otwiera się w nowym oknie
Opis:: Jedną z metod unieszkodliwienia serwatki kwaśnej może być jej fermentowanie z osadami komunalnym. Dozowanie serwatki do osadów komunalnych nie powinno zakłócać procesu fermentacji ani pogarszać podatności osadów przefermentowanych na odwadnianie. Efekty kofermentacji uzyskane dla takich samych proporcji udziału serwatki w 2 osadach komunalnych wykazały, że istotną rolę przy ustalaniu dawek serwatki może odgrywać proporcja ChZT serwatki / ChZT osadów.
One of the methods of disposal of acid wheymay be the fermentation of municipal sewage sludge. Dosage whey waste water should not interfere with the fermentation process, and also deteriorate the susceptibility of fermented sludge dewatering. Co-digestion effects obtained for the same proportion of whey in 2 municipal sludge have shown that an important role in determining the doses of whey can play ratio of COD whey / COD sludge.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Próba współfermentacji osadów ściekowych i sopstoku – produktu ubocznego rafinacji olejów roślinnych
An attempt at co-digestion of sewage sludge and soapstock – a by-product of vegetable oil refining
Autorzy:: Kalemba, K.
Barbusiński, K.
Tematy:: sludge digestion
co-digestion
sewage sludge
soapstock
biogas
methane
fermentacja osadów
współfermentacja
osady ściekowe
sopstok
biogaz
metan; Pokaż więcej
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Powiązania:: https://bibliotekanauki.pl/articles/236672.pdf Link otwiera się w nowym oknie
Opis:: Effectiveness of co-digestion of sewage sludge with soapstock, a by-product of vegetable oil refining, was investigated. Studies lasting 28 days were carried under static conditions in a sludge digestion system consisting of 12 tight, glass flasks of 500 cm3 each, equipped with kits for biogas collection. 5%, 10%, 15%, 20% and 25% of soapstock was added to the sludge mixture. An increase in biogas production and in percentage share of methane content in the biogas was obtained. The biggest biogas production was recorded for samples with 5% and 10% soapstock content. The biogas production was increased by 51% and 50.5% in comparison to the control sample (no soapstock). In addition, the highest methane content in biogas (74%) was observed for the samples with 5% and 10% soapstock content. The soapstock content of above 10% in the mixture of sludge resulted in the inhibition of biogas production. A fair degree of co-digestion of the tested mixtures was received, namely 42.39% and 42.57%, for 5% and 10% soapstock samples respectively, although it was slightly lower than for the reference sample (47.69%). Dewatering properties of the sludge deteriorated significantly due to the co-digestion process. Capillary suction time (CST) for the reference sample before and after the co-digestion increased from 15 s to 37 s. For the remaining samples, CST increased as well with the soapstock content from 55 s to 435 s.
Badano skuteczność współfermentacji osadów ściekowych z sopstokiem – produktem ubocznym rafinacji oleju roślinnego. Badania prowadzono przez 28 d w warunkach nieprzepływowych (porcjowych) z wykorzystaniem instalacji do fermentacji osadów składającej się z 12 szczelnych szklanych naczyń o pojemności 500 cm3, wyposażonej w zestawy do odbioru biogazu. Do zagęszczonego osadu nadmiernego, zaszczepionego osadem z komory fermentacyjnej, dodano 5%, 10%, 15%, 20% i 25% sopstoku. Uzyskano zwiększenie ilości wydzielanego biogazu oraz procentowej zawartości w nim metanu. Największą produkcję biogazu odnotowano w próbkach z 5% oraz 10% udziałem sopstoku. W obu próbkach uzyskano odpowiednio o 51% i 50,5% więcej biogazu niż w próbce kontrolnej. Również największe stężenie metanu w biogazie (74%) uzyskano w próbkach z 5% oraz 10% udziałem sopstoku. Udział sopstoku w mieszaninie osadów powyżej 10% powodował inhibicję produkcji biogazu. Uzyskano też dobry stopień przefermentowania badanych mieszanin, który w próbkach z 5% i 10% udziałem sopstoku wynosił 42,39% oraz 42,57%, chociaż był nieco mniejszy w stosunku do próbki kontrolnej (47,69%). Proces współfermentacji znacząco pogorszył właściwości filtracyjne osadu. W próbce kontrolnej wartość czasu ssania kapilarnego (CSK) przed oraz po procesie współfermentacji wzrosła z 15 s do 37 s. W pozostałych próbkach wraz z rosnącym udziałem sopstoku wzrastała też wartość CSK z 55 s do 435 s.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Co-digestion of sewage sludge and mature landfill leachate in pre-bioaugmented system
Autorzy:: Montusiewicz, A.
Tematy:: anaerobic co-digestion
primary bioaugmentation
sewage sludge
mature landfill leachate
biogas/methane yields; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/124578.pdf Link otwiera się w nowym oknie
Opis:: The study examined the effects of co-digestion of sewage sludge and mature landfill leachate at the volumetric ratio of 95:5% in primarily bioaugmented system. Bioaug-mentation was carried out with the use of commercial product Arkea® in the volumet-ric dose of 5% and lasted three months prior to the co-digestion start-up. Co-digestion was undergone without bioaugmentation. The results indicated that in the first period (of three months) following bioaugmentation, co-digestion led to biogas/methane yields only 5-8% lower as compared to anaerobic digestion of sewage sludge, and the differences were not statistically significant. Moreover, a comparable value of vola-tile solids removal was obtained. However, the effects became worse over time, i.e. a lower organics removal efficiency of 16% as well as 9.5–13% decreases of biogas/ methane yields were achieved by applying co-digestion for a further period (of the same duration). Co-digestion of sewage sludge and mature landfill leachate could be recognized as quite efficient in the system that was primarily bioaugmented with the use of Arkea®. However, the beneficial impact of bioaugmentation remained for the limited period of three months after its completion. To sustain the favourable effects a periodical, repeatable bioaugmentation of the co-digestion system is required.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Biogas Recovery from Refinery Oily Sludge by Co-Digestion Followed by Sustainable Approach for Recycling the Residual Digestate in Concrete Mixes
Autorzy:: Jasim, Hassan S.
Ismail, Zainab Z.
Tematy:: co-digestion
biogas recovery
methane
Gompertz model
oily sludge
refinery oily sludge
concrete; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2204865.pdf Link otwiera się w nowym oknie
Opis:: This study investigated the potential of biogas recovery from refinery oily sludge (ROS) inoculated with animals’ manure by co-digestion of in lab-scale biodigesters at mesophilic conditions. Cow dung (CD), cattle manure (CM), and poultry manure (PM) were utilized as co-substrates. The biogas production from the co-digestion process exceeds its production from uninoculated ROS by approximately 67.5 %, 22.13% and 21.6% for PM, CM, and CD, respectively. Kinetics of the co-digestion process was well described by the modified Gompertz model. The predicted and experimental values of biogas production were well fitted with R2 > 0.96, suggesting favorable conditions of the digestion process. New approach for recycling the residual digestate to replace freshwater in concrete mixes was carried out. Results of examining the mechanical properties of the residual digestate-modified concrete mixes demonstrated a potential sustainable approach for the disposal of residual digestate in concrete mixes.
Dostawca treści:: Biblioteka Nauki

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