Thermotolerance and Hydrogen Production Potential of Salt-tolerant Microflora from Salt Fields DOI Open Access
Tsuyoshi Imai, Gede Adi Wiguna Sudiartha, Jantima Teeka

et al.

Published: Sept. 22, 2023

Upper mesophilic temperature acclimation of halophilic, hydrogen-producing bacteria from salt fields was investigated in this study, along with the changes microbial abundance during an-aerobic digestion (AD) process. Genomic approaches such as PCR-denaturing gradient gel elec-trophoresis (DGGE) and next-generation sequencing (NGS) were performed to profile mi-crobial communities. During AD, there a significant Halanaerobacter lacunarum at 48°C followed by increase hydrogen yield, signifying potential contribution halophile production. A decrease dominance H. Halan-aerobium fermentans 42°C, likely due an other bacterial species, noted but their significantly increased temperatures 45°C 48°C. This investigation provides valuable insights highlighting Halanaerobium sp. halo-philic adapt under upper conditions synthesizing hy-drogen. The findings present study also underscore importance optimizing temper-ature pH maximize yield high-salt anaerobic digestion.

Language: Английский

Portable Biogas Digester: A Review DOI Creative Commons

Yolanda Mapantsela,

Patrick Mukumba, KeChrist Obileke

et al.

Gases, Journal Year: 2024, Volume and Issue: 4(3), P. 205 - 223

Published: Aug. 1, 2024

To reduce and convert biodegradable waste into energy-rich biogas, anaerobic digestion technology is usually employed. Hence, this takes place inside the biogas digester. Studies have revealed that these digesters are designed constructed using bricks, cement, metal; often require a large footprint; bulky expensive. The innovation of portable has come market to address challenges. This present review provides an overview in-depth comprehensive information on in literature. Areas covered include modification digester design, need for digester, recent studies factors affecting performance digesters, specific assumptions taken consideration designing any Convincingly, appeal small rural families because their ease operation, maintenance, ability save space. material construction comparison with other designs economic feasibility system were also reviewed. Implications: full-scale fabrication, utilization viable but not widely employed compared designs. However, there lack readily available design digesters. presents various aspects relating quality produced. Therefore, suits audiences energy process engineers, researchers, academics, economists.

Language: Английский

Citations

2
Unravelling the effects of temperature shifts on microbial communities and biogas production of digested sewage sludge anaerobic digestion DOI Creative Commons

Sudiartha Gede Adi Wiguna,

Tsuyoshi Imai

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 485, P. 02001 - 02001

Published: Jan. 1, 2024

Anaerobic digestion (AD) is an effective method to generate renewable energy from domestic wastewater via biogas production. AD heavily dependent on temperature since it impacts the microbial communities, which in turn determines stability of process. This study investigated how community structure changed during a stepwise upshift 37 °C 41 fed-batch serum vials using digested sewage sludge as inoculum and glucose-based substrate. Results showed that there was 9% decrease methane production when shifted ºC 39 ºC. Despite lower yield, content at higher than ºC, followed by 41% CO 2 condition indicates activity hydrogenotrophic Methanobacterium consumed produce syntrophic Acetomicrobium acetate support acetoclastic methanogen, dominated Methanothrix . The abundance methanogens declined significantly after These findings exhibited certain range temperatures; growth inhibited further led decline overall despite versatility acetogens their supports.

Language: Английский

Citations

1
Automatización de un digestor anaerobio con sistema embebido para la producción de biogás a partir de residuo del aceite de palma DOI Open Access
Carlos Arturo Vides-Herrera, Aldo Pardo García, Adalberto Ospino Castro

et al.

REVISTA COLOMBIANA DE TECNOLOGIAS DE AVANZADA, Journal Year: 2024, Volume and Issue: 2(44), P. 65 - 73

Published: July 6, 2024

Este trabajo presenta la automatización de un reactor anaerobio utilizado para producción biogás a partir lodos residuales en el proceso extracción del aceite palma (POME). El se realiza utilizando sistemas embebidos como tarjeta Arduino DUE. Las variables que miden este son temperatura, PH y agitación; parámetros más críticos controlar afectan significativamente calidad mismo. Para utilizaron sensores determinar cantidad metano (CH4), dióxido carbono (CO2) ácido sulfhídrico (H2S). adquisición data utilizó comunicación USB entre embebida PC, Visual Basic.NET, sistema adquisición, almacenamiento visualización datos las biodigestión POME, mide producido tiempo real visualiza almacena información posterior análisis estadístico.

Citations

1
Reduced sulfur compound formation from a leachate-saturated zone under changing temperature conditions DOI
Nan Zhang,

Manting Ci,

Jia Jia

et al.

Waste Management, Journal Year: 2024, Volume and Issue: 189, P. 185 - 195

Published: Aug. 28, 2024

Language: Английский

Citations

1
Investigating the Influence of Organic Loading Rate, Temperature and Stirring Speed on Biogas Production Using Agricultural Waste in South Africa DOI Creative Commons
Ephodia Sihlangu, Primrose Magama, Idan Chiyanzu

et al.

Agriculture, Journal Year: 2024, Volume and Issue: 14(11), P. 2091 - 2091

Published: Nov. 20, 2024

Biogas production offers an alternate method for managing agricultural waste and contributes to sustainable renewable energy generation. Anaerobic digestion (AD) enables the transformation of organic waste, including substrates, into biogas, mostly consisting methane, carbon dioxide, trace gases such as ammonia hydrogen sulphide. The objective this study was employ a 30 L semi-continuous stirred tank reactor evaluate effects loading rate, temperature, speed stirring on biogas production. inoculated with 8.6 filled 11.4 mixed substrate cattle manure, potato starch fruit expired dry dog food. evaluated rates (OLRs) 11.2, 12.2, 13.2 g VS/L d, speeds 25.5, 35.5, 45.5 rpm. results indicated that maximum yield 12.2 d at rpm, in thermophilic conditions, surpassed mesophilic measuring 105,860 NmL/g VS compared 69,800 VS. This emphasises significance optimising operational parameters improve output, thereby contributing resources advancing Sustainable Development Goals (SDGs).

Language: Английский

Citations

1
Indigenous Bacteria Diversity of Fermetodege Based on Molecular Analysis The Next Generation Sequencing (NGS) DOI Creative Commons
Isnawati Isnawati, Fitriari Izzatunnisa Muhaimin

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 483, P. 01003 - 01003

Published: Jan. 1, 2024

Fermetodege was fermented feed that developed by researchers which is proven to increase the biomass and semen quality of ruminant livestock. The raw material for making this were cellulose-rich materials, so contains many kinds cellulolytic bacteria.The objective study reveal diversity indigenous bacteria in a called Fermetodege. made from water hyacinth ( Eichhornia crassipes ), corn Zea mays ) cobs rice Oryza sativa bran. This mixture rich cellulose good source cellulolitic bacterial isolates. cellulase enzyme. Revealing carried out through series procedures include fermetodege, fermenting it taking samples mesophilic I, thermophilic, II maturing phase. community dominated groups (from most least), namely Bacilli , Clostridia, Gammaproteobacteria Bacteroidia, Negativicutes Actinobacteria Desulvovibrionia Alfaproteobacteria Coriobacteria . Based on NGS results, found there 9 communities feed.

Language: Английский

Citations

0
A Cyclic Shift-Temperature Operation Method to Train Microbial Communities of Mesophilic Anaerobic Digestion DOI
Ming Wang, Yunting Li, Hao Peng

et al.

Published: Jan. 1, 2024

The current work attempts to develop a shift-temperature AD (STAD) mode, with the temperature shifting between 35°C and 55°C, intending utilize thermophilic environment microbial flora promote substrate degradation conversion. Severe inhibition of biogas production occurred when was firstly increased stepwise from 50°C, whereas no observed at second warming cycle. When organic load rate 6.37 g VS/L/d, yield STAD reactor reached about 400 mL/g VS, nearly double that constant-temperature (CTAD). promoted proliferation Methanosarcina (up 57.32%), while severely suppressed hydrogenophilic methanogens. However, shifted 35°C, most species recovered quickly excess propionic acid consumed. Macrogenomic analysis showed also gene enrichment related pathways metabolism, cellular functions, conversion methanol methylammonium substances.

Language: Английский

Citations

0
Performance Monitoring of Greenhouse Biogas Digester DOI Creative Commons

Mandilakhe Mzobotshe,

Patrick Mukumba, Stephen Tangwe

et al.

ChemEngineering, Journal Year: 2024, Volume and Issue: 8(6), P. 109 - 109

Published: Oct. 31, 2024

The country of South Africa is facing an energy crisis due to heavy reliance on fossil fuels, resulting in continuous load shedding. use renewable technologies can help resolve the current electricity country. Moreover, waste-to-energy conversion has potential greatly contribute economic development and improve public health. One such technology biomass, which exploits conversion. Additionally, solar be utilized maintain appropriate digester temperatures for optimal biogas yield. study aims assemble a portable balloon enclosed greenhouse cavity feed it with cow dung. Daily monitoring pH temperature (ambient, greenhouse, slurry) was conducted, while yield monitored using serial residential diaphragm flow meter. Furthermore, composition methane SAZQ analyzer. investigated impact production. results revealed that gas production rate fermentation increased within certain range. Therefore, maximum achieved at 6.84 7.03, exceeded 50%. Consequently, concluded by indicating housed envelope, as demonstrated this novel study, maintains mesophilic range necessary anaerobic digestion.

Language: Английский

Citations

0
Biogas yield from co-digesting banana pseudostems with cow dung: Transitioning from mesophilic to thermophilic regimes DOI Creative Commons
Sooraj Mohan, Augustine B.V. Barboza,

K. Ashwini

et al.

Cogent Engineering, Journal Year: 2024, Volume and Issue: 11(1)

Published: Nov. 21, 2024

Language: Английский

Citations

0
Syntrophic Relationship Among Microbial Communities Enhance Methane Production During Temperature Transition from Mesophilic to Thermotolerant Conditions DOI Creative Commons
Gede Adi Wiguna Sudiartha, Tsuyoshi Imai, Alissara Reungsang

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114903 - 114903

Published: Nov. 1, 2024

Language: Английский

Citations

0