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Influence of Mesophilic Bacteria Inoculation with Chicken Manure for Biogas Production Enhancement in Anaerobic Digestion (AD) Process

Alkarimiah Rosnani

Civil and Environmental Engineering Reports

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2023

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Vol. 33, no. 3

33--49

EN

The objective of this study is to investigate biogas production by anaerobic digestion using mesophilic bacteria mixed with Palm Oil Mill Effluent (POME). This project aims to determine the volume of biogas generation and volatile fatty acid (VFA) production from chicken manure via the anaerobic digestion process. Anaerobic digestion (AD) of chicken manure (CM) often faces obstacles, including high total ammonia nitrogen (TAN) concentration, inorganic soil particles, and wood chips. The digestion process was carried under batch mode conditions in Scott bottles of 1.0 L active volume. The bottles were immersed in a water bath to control their temperature at 37℃. The characteristics of total solid, volatile solid of mass fraction, pH, and temperature on the amount of biogas produced were studied. The investigation showed that biogas production can be enhanced by inoculation of another material. The optimum biogas composition in the AD system was recorded by Inoculum I, which was achieved on Day 2 at 560 mL/L. The highest cumulative methane yield was observed in the leachate with Inoculum (I), which was 8976 mL/gVS, while the CML produced 4 mL/g VS. The anaerobic digestion (AD) process augmented with inoculum demonstrated heightened efficacy in biogas generation and VFA concentration reduction during the acidogenic phase, surpassing the observed performance in chicken manure leachate.

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Application of response surface methodology to improve methane production from jerusalem artichoke straw

Meng Yan, Li Yi, Chen Laisheng, Han Rui

Archives of Environmental Protection

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2022

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Vol. 48, no. 3

70--79

EN

Anaerobic digestion (AD) converts organic matter and biomass waste into biogas, making it an environmentally friendly technology to improve energy resources for a wide range of applications. Jerusalem artichoke straw (JAS) has an enriched content of cellulose and exhibits a high potential for methane production. AD-based production of methane can eff ectively utilize waste JAS. This study investigated the AD performance of JAS to explore the enhancement of methane yields by employing a Box-Behnken experimental design (BBD) of response surface methodology (RSM). The overall goal was to identify the optimal levels of pretreatment factors, including HCl concentration, pretreatment time, and pretreatment temperature, for producing optimal biomethane yields from JAS. The highest value of methane production achieved was 256.33 mL g-1VS by using an optimal concentration of HCl as 0.25 M, a pretreatment time of 10 h, and a pretreatment temperature of 25°C. These results inform the future application of JAS in enhanced methane production.

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Optimization of the distribution of drilling boreholes in methane production from coal seams

Wątor Anna, Chećko Jarosław, Urych Tomasz

Journal of Sustainable Mining

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2020

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Vol. 19, iss. 4

272--285

EN

The paper presents an evaluation of methane production from coal seams. The Warszowice-Pawłowice Północ deposit was selected for numerical modelling of methane production. The numerical model was made for a fragment of this deposit of about 2 km2. The numerical model was constructed for 6 seams. Three deposits were selected for simulation of methane production. Three horizontal boreholes were designed within the model area, referring to the existing Suszec19 borehole. A number of simulations related to methane production from the selected deposits were performed. They included different variants of the number of boreholes and also took into account the z-pinnate method. The analyses proved that the most advantageous is the production of 3 directional boreholes simultaneously with the z-pinnate method. For this variant the degree of methane production was 21.9% of the estimated resources.

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Boosting production of methane from sewage sludge by addition of grease trap sludge

Neczaj E., Grosser A., Worwąg M.

Environment Protection Engineering

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2013

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Vol. 39, nr 2

125--133

EN

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.

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Produkcja metanu wskaźnikiem oceny biodegradowalności substratów w procesie fermentacji metanowej

Myszograj S.

Rocznik Ochrona Środowiska

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2011

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Tom 13

1245-1259

PL

Fermentacja jest beztlenowym biologicznym procesem rozkładu (mineralizacji) złożonych wysokocząsteczkowych substancji organicznych. Technologia ta jest stosowana do stabilizacji osadów ściekowych i biofrakcji odpadów organicznych. Substraty poddawane fermentacji metanowej charakteryzują się różnymi właściwościami. Ogólnie można je podzielić na dwie zasadnicze grupy: substraty z dużą zawartością zawiesin organicznych oraz substraty zawierające głównie rozpuszczone i koloidalne związki organiczne (tabela 1) [2]. Głównymi produktami procesu jest przefermentowana biomasa oraz biogaz.

EN

Anaerobic digestion is used for stabilization of sewage sludge and biofraction of organic wastes. In spite of general applying of fermentation technology in the practice, projecting, working and the control of anaerobic processes usually is based on empirical indicators. The biodegradability of the organic matter is often estimated by the biochemical methane potential, the participation of methane in biogas and reduction of the organic mass. In this paper the biodegradability ratio of sewage sludge and biofraction of municipal wastes on anaerobic digestion were compared, on the basis of the biochemical methane potential (BMP). The efficiency of the production of bio-gas (methane) from sewage sludge and biofraction of municipal wastes depends on the chemical composition of these substrates, particularly on the content of organic carbon. Digestion of sewage sludge after 20 days resulted in BMP of 302.5 dm3/g VSS added. The participation of methane in the biogas was the lowest on beginning of process (51.3%) and increased while duration of fermentation to 72.0%. The production of biogas from the biofraction of municipal wastes in the end of the process was 367.6 dm3/g VSS. The participation of methane in the biogas on the beginning of the process was 51.3% and increased with duration of fermentation to 62.8%. The coefficient of the anaerobic bio-degradation of substrates (BD) determined on the basis of the maximum production of methane and COD value of substrates received 41.1% VSS for sew-age sludge and 38.5%VSS for municipal wastes.The values of hydrolysis rate kh for these substrates were also deter-mined. First order specific hydrolysis rate constant for sewage sludge decreased from 0.203 d-1 in third day of process to 0.179 d-1 in twentieth day of the digestion. This are typical values for the sewage sludge. Decrease of the parameter k value during anaerobic digestion proves graded reduction of accessibility of substrates for microorganisms. First order specific hydrolysis rate constant for waste in range from 0.077 d-1 to 0.137 d-1 is characteristic for biowaste. The growth of the parameter k value with the time of the process duration results from graded solubilisation and hydrolysis of the solid fraction of wastes. Fractional size of substrates has a significant influence on obtained stage of the biodegradation, beside the chemical characteristic. The size of solid particles decides about the speed of the hydrolysis of organic fraction and the accessibility of organic compounds for microorganisms.

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Anaerobic digestion of maize hybrids for methane production

Vindis P., Mursec B., Janzekovic M., Stajnko D., Cus F.

Journal of Achievements in Materials and Manufacturing Engineering

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2010

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Vol. 40, nr 1

87-94

EN

Purpose: This research project was aimed at optimising anaerobic digestion of maize and find out which maturity class of corn and which hybrid of a particular maturity class produces the highest rate of biogas and biomethane. Also the chemical composition of gases was studied. Design/methodology/approach: Biogas and biomethane production and composition in mesophilic (35 degrees C) conditions were measured and compared. The corn hybrids of FAO 300 - FAO 600 maturity class were tested. Experiments took place in the lab, for 35 days within four series of experiments with four repetitions according to the method DIN 38 414. Findings: Results show that the highest maturity classes of corn (FAO 500) increases the amount of biogas and biomethane. The greatest gain of biogas, biomethane according to maturity class is found with hybrids of FAO 400 and FAO 500 maturity class. Among the corn hybrids of maturity class FAO 300 - FAO 400, the hybrid PR38F70 gives the greatest production of biogas and biomethane. Among the hybrids of maturity class FAO 400 - FAO 500, the greatest amount of biogas and biomethane was produced by the hybrid PIXXIA (FAO 420). Among the hybrids of maturity class FAO 500 - FAO 600 the hybrid CODISTAR (FAO 500) the highest production of biomethane. Production of biomethane, which has the main role in the production of biogas varied with corn hybrids from 50-60 % of the whole amount of produced gas. Research limitations/implications: Economic efficiency of anaerobic digestion depends on the optimum methane production and optimum anaerobic digestion process. Practical implications: The results reached serve to plan the electricity production in the biogas production plant and to achieve the highest biomethane yield per hectare of maize hybrid. Originality/value: Late ripening varieties (FAO ca. 600) make better use of their potential to produce biomass than medium or early ripening varieties.

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Difference between Ukraine and USA CBM projects in terms of data quality and evaluation

Drop K., Cabanas P., Rutkowska H.

Zeszyty Naukowe. Górnictwo / Politechnika Śląska

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2009

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z. 287

55-59

EN

The differences in approaches to CBM play between USA CBM project (San Jfcan Basin) and Ukraine CBM/CMM in Doneck area will be discussed in the presented paper. Generally, USA play is really CBM farm focused on methane production without oUnderground mine activities. The main goal of the Ukrainian project based on research made \? the Doneck mine area is degasification of excavating coal and overburden sandstone layers which is performed for the safety purposes. The gas production is only a secondary objective

PL

W artykule przedstawiono zróżnicowanie podejście do projektów CBM w USA - projekt (San Juan Basin) i na Ukrainie CBM/CMM w Zagłębiu Donieckim. Generalnie w przypadku USA preferuje się przedsięwzięcia typu farm CBM, ukierunkowane na produkcję metanu z wyłączeniem podziemnej działalności górniczej. Zasadniczym celem projektu ukraińskiego, opartego na badaniach przeprowadzonych w Zagłębiu Donieckim, jest odgazowame eksploatowanych węgli oraz tworzących nadkład piaskowców, prowadzone dla zwiększania bezpieczeństwa. Eksploatacja gazu odgrywa tu rolę drugorzędną.

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Wykorzystanie biogazu w oczyszczalniach ścieków

Sadecka Z., Myszograj S.

Ekotechnika

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2008

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nr 1

21-25

PL

Aktualnie w zakresie gospodarki osadami ściekowymi w naszym kraju dominują dwa kierunki: składowanie oraz wykorzystanie osadów na cele przyrodnicze i rolnicze. Składowanie osadów ściekowych musi być znacznie ograniczone, a z czasem całkowicie wykluczone, ze względu na zapisy Dyrektywy 1999/31/EC, które znalazły odzwierciedlenie w polskim prawodawstwie dotyczącym gospodarki osadami. Wykorzystanie przyrodnicze i rolnicze osadów w najbliższym czasie będzie napotykać na coraz więcej ograniczeń formalnych i instytucjonalnych. Rozwiązaniem, które pozwala na wykorzystanie zawartej w osadach substancji organicznej do produkcji energii elektrycznej lub cieplnej oraz uzyskanie produktu bezpiecznego dla środowiska, jest proces stabilizacji beztlenowej - fermentacja mezofilowa.

EN

Two tendencies are presently dominating in our country's sewage sludge management, namely storage and natural or agricultural utilization. The storage of sewage sludge must be considerably limited, and over time completely excluded, according to the provisions in the Directive 1999/3I/EC which have been referred to in the Polish legislation concerning management of sewage sludge. The natural and agricultural utilization of sewage sludge, in the nearest future will be more and more facing formal and institutional limitations. A solution that makes it possible to use the organic matter contained in sewage sludge for production of the electrical or thermal energy and for obtaining environmentally safe product is the process of anaerobic stabilization - the mesophile fermentation.