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Wyświetlanie 1-15 z 18
Tytuł:
Xylose substrate as the only nutrient in the operation of microbial fuel cells
Autorzy:
Vajda, B.
Nemestothy, N.
Bakonyi, P.
Bélafi-Bakó, K.
Powiązania:
https://bibliotekanauki.pl/articles/208205.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
microbial fuel cells
catalysis
anaerobic conditions
anaerobic sludge
catalytic reaction
Shewanella
mikrobiologiczne ogniwa paliwowe
kataliza
warunki beztlenowe
reakcje katalityczne
Opis:
Microbial fuel cells are bioelectrochemical devices converting chemical energy of organic compounds (i.e. biomass) into electrical energy by catalytic reactions of microbes under anaerobic conditions. The operation of two-chamber microbial fuel cells by Shewanella putrefaciens and mesophilic anaerobic sludge was studied comparatively, using xylose and glucose as solo substrates during the experiments. It was found that higher electric power was generated by the multicultural system than by the monoculture.
Źródło:
Environment Protection Engineering; 2014, 40, 2; 131-141
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic efficiency of processing biodegradable waste in dry anaerobic digestion and composting technologies under the Polish market conditions
Autorzy:
Lewandowska, D.
Den-Boer, E.
Powiązania:
https://bibliotekanauki.pl/articles/207070.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anaerobic digestion
economic analysis
biodegradable waste
fermentacja beztlenowa
analiza ekonomiczna
odpady biodegradowalne
Opis:
An economic analysis of the dry anaerobic digestion (AD) in Poland operated with various input streams has been presented, ranging from the organic fraction of residual waste to biowaste from various sources. The shares of individual costs and revenues change significantly in these operation options. Sensitivity analyses, performed under assumption of four different market conditions showed that the profitability of AD plants is unpredictable. Assuming the current legal situation, the final profit or loss of the digestion technology strongly depends on the prices of energy. The final economic output for the anaerobic digestion was compared to the output of an aerobic stabilization process.
Źródło:
Environment Protection Engineering; 2017, 43, 3; 269-286
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of vinasse and silica mud on the performance of thermophilic fermentation of brewery sludge from brewery waste substrates
Autorzy:
Xin, Y.
Shen, J.
Wang, B.
Zhu, X.
Wang, Y.
Wang, G.
Chen, Q.
Powiązania:
https://bibliotekanauki.pl/articles/950042.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
brewery waste
anaerobic digestion
thermophilic fermentation
odpady browarnicze
fermentacja beztlenowa
fermentacja termofilna
Opis:
The anaerobic digestion of mixing brewery sludge with vinasse and silica mud at various ratios under thermophilic conditions was explored. Vinasse, silica mud and beer sludge (the sludge from the treatment of beer wastewater) are the main solid wastes of the beer production. Uncontrolled decom-position of these wastes could cause large-scale contamination of soil, water, and air. The results of the investigation showed that the optimal ratio of beer sludge and vinasse was 1:1 under total solids of 10%, producing the highest amount of gas of 1.34 cm3/g within 24 h and 4.06 cm3/g in 10 days. The silica mud weakened the fermentation process and reduced the gas production, and the concentration of total organic carbon, total nitrogen and volatile solids decreased during the digestion. For the mixture of brewery sludge and vinasse, the content of the total organic matter in the biogas manure was more than 60% and the value of pH was 6.5 after the anaerobic digestion, indicating that the manure can be used as an organic fertilizer.
Źródło:
Environment Protection Engineering; 2017, 43, 2; 119-127
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Disintegration of biological sludge. A comparison between ozone oxidation and ultrasonic pretreatment
Autorzy:
Erden, Gulbin
Filibeli, Ayse
Powiązania:
https://bibliotekanauki.pl/articles/208083.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ultrasounds
ozone
oxidation
anaerobic conditions
biopreparations
ultradźwięki
utlenianie
ozon
osady ściekowe
warunki beztlenowe
Opis:
The effects of ozone oxidation and ultrasonic pretreatment on anaerobic sludge bio-processing have been studied. Ultrasound (9690 kJ/kg total solids (TS) of specific energy) and ozone (0.1 g O3/kg TS) were applied to sludge samples preceding anaerobic sludge digestion for disintegration purpose. Organic matter reduction and methane production were measured, as well as physicochemical characteristics (pH, alkalinity, and particles size) and dewatering characteristics of sludge during semi-batch anaerobic digestion. For each treatment, 5 days of sludge retention time were applied on mesophilic conditions for 30 days operation period. The highest volatile solids reduction was obtained with ozone oxidation. Moreover, disintegrated sludge with ozone oxidation and ultrasonic pretreatment provided 55% and 49% higher methane production comparing to the raw sludge, respectively. In terms of dewatering characteristics of digested sludge, ultrasonic treatment led to an increase in the sludge’s resistance to dewatering. This negative effect was not observed in ozone oxidation.
Źródło:
Environment Protection Engineering; 2019, 45, 3; 55-67
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intensification of the anaerobic microbiological degradation of sewage sludge under bio-sulfidogenic conditions
Autorzy:
Plyatsuk, L.
Chernish, E.
Powiązania:
https://bibliotekanauki.pl/articles/207919.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anaerobic digestion
desulfurization
hydrogen sulfide
ozonization
sewage sludge
anaerobic bioreactors
organic matter removal
sewage sludge treatment
fermentacja beztlenowa
odsiarczanie
siarkowodór
ozonowanie
osady ściekowe
bioreaktor beztlenowy
usuwanie materii organicznej
przeróbka osadów ściekowych
Opis:
Possibility of using phosphogypsum as a mineral substrate for the sewage sludge treatment in bio-sulfidogenic conditions has been investigated. Anaerobic microbiological degradation (AMD) on way of sulfidogenesis was used to produce biogenic hydrogen sulfide. The ozonation of the sludge prior to the AMD under bio-sulfidogenic conditions led to higher efficiencies of hydrogen sulfide production and organic matter removal. After 20 days of digestion, the elimination of CODt and CODs varied between 78-84% and 83-87%, respectively, within advanced operation of anaerobic bioreactor. Technological applications of such system has been discussed.
Źródło:
Environment Protection Engineering; 2013, 39, 3; 101-118
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Start-up performance of a mesophilic anaerobic digester without external inoculums
Autorzy:
Dohdoh, A. M.
Aboulfotoh, A. M.
Powiązania:
https://bibliotekanauki.pl/articles/207791.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sludge digestion chamber
inoculation
anaerobic digestion
biogas
komora fermentacyjna
inokulacja
fermentacja beztlenowa
biogaz
pasza
Opis:
The objective of anaerobic digester start-up is to achieve steady-state operation and the required reduction performance in the shortest possible time. The present study aims to assess a novel strategy to start-up pilot scale mesophilic anaerobic digester with internal inoculums; the operational parameters such as feed concentration and operating temperature were also evaluated. Three pilot scale anaerobic digester systems were designed and manufactured. They were equipped with all necessary instruments for measurements, operation and control. Each system consists of a feed tank, a reactor (anaerobic digester), a gas storage tank, and a displaced water collecting tank. The digester start-up was achieved successfully and smoothly without any operational problems. The feed concentration had minor effects on the performance of the digester start-up while the operating temperature has approximately no effect.
Źródło:
Environment Protection Engineering; 2017, 43, 4; 29-39
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of precast anaerobic digestion tank combined with a food waste disposer system. A case study of household food waste in Thailand
Autorzy:
Kanchanapiya, P.
Jantharadej, K.
Chavanparit, O.
Powiązania:
https://bibliotekanauki.pl/articles/207201.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
food waste
household
fermentation tank
anaerobic digestion
odpady żywnościowe
gospodarstwo domowe
zbiornik fermentacyjny
fermentacja beztlenowa
Opis:
The actual sizes of precast anaerobic digestion tanks (600 dm3) combined with food waste disposer systems (PAD-FWD) were selected to investigate efficiency under actual use conditions. The effects of organic loading rates (OLRs) and the presence of linear alkylbenzene sulfonate (LAS) surfactants in dishwashing liquid on the organic removal efficiency and biogas generation of PAD-FWD were studied. According to the findings, the PAD-FWD at an OLR of 0.13 kg VS/(m3·day) and hydraulic retention time (HRT) of 12 days could be applied to treat food waste without adding any nutrients to the system to effectively produce biogas. Under operating conditions of the LAS concentration of 63.4 mg/dm3, PAD-FWD was able to reach a steady-state condition with a performance similar to the system without added LAS. The quality of effluent from the PAD-FWD system was unable to meet the effluent standard for households; thus, this effluent should be collected for treatment in a secondary wastewater treatment plant (WTP) before release into the environment. The effluent quality at an OLR of 0.13 kg VS/(m3·day) was in the range of the influent properties of the central WTP, which ensures that the pollutants in the effluent do not increase the overall burden on the WTP. The bio-sludge from PAD-FWD was not a sufficient nutrient source for the growing plants. However, the germination index (GI) of the effluent at an OLR of 0.13 kg VS/(m3·day) did meet the fertilizer standard. The results of this study can be applied to develop self-management of food waste technology to encourage the separation of food waste at the origin within households.
Źródło:
Environment Protection Engineering; 2017, 43, 2; 93-108
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of zero-valent iron and enzymes on the anaerobic co-digestion of sewage sludge and corn silage
Autorzy:
Zhou, Haidong
Cao, Zhengcao
Ying, Zhenxi
Liu, Jicheng
Hu, Tao
Zhang, Mingquan
Zhang, Jingyuan
Powiązania:
https://bibliotekanauki.pl/articles/2032872.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
corn silage
COD
sewage sludge
anaerobic digestion
kiszonka z kukurydzy
ChZT
osad ściekowy
beztlenowa fermentacja
Opis:
Anaerobic co-digestion of sewage sludge and corn silage with zero-valent iron powder (Fe0), cellulase, and papain as reinforcement means was conducted. COD-based feeding ratio of sewage sludge to corn silage was set to 2:1, the solids retention time (SRT) 20 day, digestion temperature 35 °C, and mixing speed 60 rpm. Removal rates of total COD during the control group, and Fe0, papain, cellulase, and papain, Fe0, and the two kinds of enzyme-added tests were 38.04, 41.02, 34.62, 34.55, 35.42, and 48.21%, respectively. The corresponding biogas production was 2.12, 2.62, 2.22, 2.41, 2.25, and 2.81 dm3/day, respectively. The results indicated the addition of cellulase, and papain could maximize the decomposition and hydrolysis of organic matter in sewage sludge and corn silage to volatile fatty acids. Fe0 could reduce the redox potentials of the anaerobic co-digestion, optimize the circumstances of the methanogenesis stage, accelerate biogas production, and improve biogas components. Fe0 and enzymes played a synergistic role in the anaerobic co-digestion system. Life cycle assessment indicated that the anaerobic co-digestion of sludge and corn silage co-substrates could benefit the economy, environment, and social development under the synergistic action of Fe0 and enzymes.
Źródło:
Environment Protection Engineering; 2020, 46, 4; 41-56
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of zero-valent iron and enzymes on the anaerobic co-digestion of sewage sludge and corn silage
Autorzy:
Zhou, Haidong
Cao, Zhengcao
Ying, Zhenxi
Liu, Jicheng
Hu, Tao
Zhang, Mingquan
Zhang, Jingyuan
Powiązania:
https://bibliotekanauki.pl/articles/2032890.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
corn silage
COD
sewage sludge
anaerobic digestion
kiszonka z kukurydzy
ChzT
osad ściekowy
beztlenowa fermentacja
Opis:
Anaerobic co-digestion of sewage sludge and corn silage with zero-valent iron powder (Fe0), cellulase, and papain as reinforcement means was conducted. COD-based feeding ratio of sewage sludge to corn silage was set to 2:1, the solids retention time (SRT) 20 day, digestion temperature 35 °C, and mixing speed 60 rpm. Removal rates of total COD during the control group, and Fe0, papain, cellulase, and papain, Fe0, and the two kinds of enzyme-added tests were 38.04, 41.02, 34.62, 34.55, 35.42, and 48.21%, respectively. The corresponding biogas production was 2.12, 2.62, 2.22, 2.41, 2.25, and 2.81 dm3/day, respectively. The results indicated the addition of cellulase, and papain could maximize the decomposition and hydrolysis of organic matter in sewage sludge and corn silage to volatile fatty acids. Fe0 could reduce the redox potentials of the anaerobic co-digestion, optimize the circumstances of the methanogenesis stage, accelerate biogas production, and improve biogas components. Fe0 and enzymes played a synergistic role in the anaerobic co-digestion system. Life cycle assessment indicated that the anaerobic co-digestion of sludge and corn silage co-substrates could benefit the economy, environment, and social development under the synergistic action of Fe0 and enzymes.
Źródło:
Environment Protection Engineering; 2020, 46, 4; 41-56
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of clofibric acid and diclofenac during anaerobic digestion of sewage sludge
Autorzy:
Zhou, H.
Zhang, Q.
Zhang, Q
Ma, L.
Tu, B.
Li, H.
Zhou, Y.
Powiązania:
https://bibliotekanauki.pl/articles/207894.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fermentacja beztlenowa
osady ściekowe
farmaceutyki
kwas klofibrowy
diklofenak
anaerobic digestion
sewage sludge
pharmaceuticals
clofibric acid
diclofenac
Opis:
Removal of two acidic pharmaceuticals, clofibric acid and diclofenac, present in sewage sludge using two kinds of anaerobic digestions was investigated. The effective isolation and purification pretreatment to extract the target compounds from the sewage sludge samples was firstly established, followed by gas chromatography-mass spectrometry (GC-MS) analysis to identify and quantify them. Under mesophilic conditions, the removal efficiencies for clofibric acid and diclofenac with the initial concentrations of 5 μg /dm3 were up to 95% and 97%. After thermophilic anaerobic digestion, the removal efficiency could be increased to 99.3% for clofibric acid, however, it did not increase for diclofenac. In general, anaerobic digestion could effectively remove the target compounds from the sewage sludge (all above 90%).
Źródło:
Environment Protection Engineering; 2013, 39, 4; 63-77
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of process parameters on anaerobic biodegradation of DDT in contaminated soil. Preliminary lab-scale study. Part II. Substrates and pH control
Autorzy:
Baczyński, T.
Powiązania:
https://bibliotekanauki.pl/articles/207709.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
biodegradation
soil pollution
starch
anaerobic biodegradation
contaminated soils
DDT
biodegradacja
zanieczyszczenie gleby
skrobia
biodegradacja beztlenowa
gleba skażona
Opis:
Suitability of various substrates for anaerobic biodegradation of DDT in contaminated soil was tested in lab-scale tests with granular sludge inoculation. Use of carbohydrate-based substances such as starch, sucrose, molasses and whey resulted in acidification, which in extreme cases inhibited DDT removal. A large amount of phosphate buffer prevented pH drop for starch, but not for sucrose. Better results were obtained with calcium carbonate as a buffering agent, which also had little effect on soil salinity. Very good effectiveness of biodegradation was achieved using sodium lactate which, however, caused alkalinisation of the soil, perhaps due to accumulation of sodium carbonate. Alkalinisation did not occur when calcium lactate was used instead. Experiments also demonstrated that Tween 80 surfactant could be successfully used as a substrate, without experiencing problems with pH control.
Źródło:
Environment Protection Engineering; 2013, 39, 1; 5-16
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boosting production of methane from sewage sludge by addition of grease trap sludge
Autorzy:
Neczaj, E.
Grosser, A.
Worwąg, M.
Powiązania:
https://bibliotekanauki.pl/articles/207466.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anaerobic digestion
methane
sewage sludge
biogas production
methane production
fermentacja beztlenowa
metan
osady ściekowe
produkcja biogazu
produkcja metanu
Opis:
Feasibility and possible use of grease trap waste (GTW) as a co-substrate for improving biogas production in anaerobic digestion with sewage sludge has been established. Anaerobic co-digestion was studied in a semi-continuous experiment at 37 °C with hydraulic retention time (HRT) of 10 days. The grease trap sludge accounted for 20, 22, 24, 26, 28 and 30% of the mixture based on volatile solids. The results of the present laboratory study revealed that the use of GTW as a cosubstrate is considered to be interesting option for digestion of sewage sludge due to increased methane production.
Źródło:
Environment Protection Engineering; 2013, 39, 2; 125-133
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of temperature fluctuation on the stability of partial nitritation applied for reject water treatment
Autorzy:
Radechovska, H.
Svehla, P.
Radechovsky, J.
Pacek, L.
Balik, J.
Powiązania:
https://bibliotekanauki.pl/articles/207642.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anammox
nitrifying reactor
ścieki
beztlenowe utlenianie amonu
sekwencyjny reaktor okresowy
reactor nitryfikacyjny
anaerobic ammonium oxidation
sequencing batch reactor
free nitrous acid
rich waste water
oxidizing bacteria
nitrification
Opis:
The influence of sudden and gradual temperature fluctuations on the stability of partial nitritation applied for the treatment of reject water containing ammonium nitrogen (NH4+-N) in the range of 1000 –1400 mg/dm3 was investigated. It was found that a sudden decrease in temperature from 24.3 °C to 14.3 °C and 15.8 °C significantly affected the stability of the process. No negative effect was recorded after a sudden temperature decrease from 24.3 to 17.4 °C. It was also found that during a gradual temperature decrease from 24.3 °C, process stability was negatively affected at 12.7 °C.
Źródło:
Environment Protection Engineering; 2017, 43, 1; 87-99
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of struvite process for nutrient recovery from anaerobic digesters of livestock wastewater
Autorzy:
Zhang, T.
Fang, C.
Li, P.
Jiang, R.
Powiązania:
https://bibliotekanauki.pl/articles/207659.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
anaerobic digester
livestock wastewater
nutrient recovery
phosphate recovery
slow release fertilizers
struvite
beztlenowa komora fermentacyjna
ścieki hodowlane
odzyskiwanie składników odżywczych
nawozy o spowolnionym działaniu
nawozy wolnodziałające
odzysk fosforanów
struwit
Opis:
Process of struvite (Mg4NH4PO4·6H2O) precipitation is a promising method for phosphorus recycling. The use of cheap magnesium ore for precipitation struvite as phosphate recovery has been examined. The optimal conditions for precipitation are pH 9.0 and Mg2+: NH4 +: PO4 -3 molar ratio 1.1:30.7:1. Linear correlation of experimental data is in qualitative agreement with modelling calculation. Surface characterization analysis demonstrates that struvite is the dominant component of precipitate. Fertility value tests show that struvite precipitate could be available as slow-release fertilizer.
Źródło:
Environment Protection Engineering; 2014, 40, 3; 29-42
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Composting and anaerobic digestion technologies as methods for reduction of virus transmission in the environment
Autorzy:
Ligocka, A.
Paluszak, Z.
Gut, W.
Powiązania:
https://bibliotekanauki.pl/articles/208162.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
viruses
waste treatment
anaerobic digestion technology
thermophilic fermentation
virus transmission
waste treatment process
produkty uboczne fermentacji
wirusy
unieszkodliwianie odpadów
technologia beztlenowa fermentacja
kompostowanie
proces fermentacji
transmisja wirusa
proces obróbki odpadów
Opis:
Survival of bovine enterovirus was studied in animal by-products subjected to sanitization processes. Composting technology and anaerobic digestion under mesophilic (37 °C) and thermophilic (55 °C) conditions were tested in terms of their effectiveness. Viruses were introduced into the biomass in the course of waste treatment processes and virus titres were determined at appropriate time intervals. Technology which allowed the most effective virus elimination, after 2 h, was thermophilic fermentation. During composting, bovine enterovirus survival ranged from 12 to 17 days, whereas the survival time for mesophilic fermentation was 28 days.
Źródło:
Environment Protection Engineering; 2016, 42, 2; 137-144
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 18

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