Effect of With/Without Agitationof Agricultural Waste on Biogas Production From Anaerobic Co-Digestion-a Small Scale

Keanoi, Naphon; Hussaro, Kanokorn; Teekasap, Sombat

doi:10.3844/ajessp.2014.74.85

Cited by 15 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…enhanced biogas production performance(Keanoi et al, 2014;Rusin et al, 2017),Yang et al (2019) did not use agitation/stirring during AD. This process could be considered more as an operational parameter of AD rather than a mechanical pretreatment strategy such as grinding or milling.…”

mentioning

confidence: 99%

Hygienization and microbial metabolic adaptation during anaerobic co-digestion of swine manure and corn stover

Arias

Veluchamy

Dunfield

et al. 2020

Bioresource Technology

View full text Add to dashboard Cite

This thesis is an investigation of the use of anaerobic co-digestion (AcoD) of swine manure (SM) and corn stover (CS) to produce biogas and reduce the environmental health risk of manure.Laboratory-scale mesophilic (38 °C) batch AcoD of different ratios of SM and CS were conducted to measure cumulative methane potential, organic matter reduction, hygienization efficiency, and microbial metabolic adaptation in response to increasing total solids (TS). The results revealed the highest methane potential and greatest organic matter reduction for SM mono-digestion. These same parameters were measured during long-term mesophilic AcoD in a semi-continuously fed auger plug-flow reactor (PFR), with a step-wise increase of organic loading rate (OLR) from 0.25-4.7 kg volatile solids fed (VS) m -3 d -1 . The results revealed the highest biogas potential and organic matter reduction at the lowest OLR. Hygienization efficiency was low in both experiments and lignocellulosic degradation increased in response to increased TS content.

show abstract

mentioning

confidence: 99%

Hygienization and microbial metabolic adaptation during anaerobic co-digestion of swine manure and corn stover

Arias

Veluchamy

Dunfield

et al. 2020

Bioresource Technology

View full text Add to dashboard Cite

show abstract

“…According to the study, the higher the viscosity, the higher the power dissipation to attain homogeneous mixing. According to Keanoi et al [67], higher biogas production was observed under mixing at higher levels of TS. Reduction in particle velocities in the vessel was observed with increasing solid content due to increased viscosity.…”

Section: Effect Of Viscosity Shear Stress and Ts Contentmentioning

confidence: 94%

Impact of mixing intensity and duration on biogas production in an anaerobic digester: a review

Singh

Szamosi

Siménfalvi

2020

Critical Reviews in Biotechnology

View full text Add to dashboard Cite

This paper is a critical evaluation of the effect of mixing on biogas production rates in an anaerobic digester. Mixing plays a prominent role in determining the efficiency of the anaerobic digestion process. This review analyzes the miscellaneous effects of mixing (on the microbial community, methane content and volatile fatty acids) at various mixing intensities and during different stages of the digestion process. Intermittent mixing (mixing at intervals) seems preferable in terms of the quality and quantity of biogas produced, and results in lower power consumption and maintenance costs associated with large-scale biogas production. Preferable mixing time (the length at intervals) and the intensity depends on the geometry of the digester and impeller. The conclusion is drawn that the study of the slurry rheology is very crucial in the designing of the mixing equipment, the shape and size of the digester, and the pipe transport system which can assist in minimizing the initial investment and operational costs. Accordingly, this paper focuses on the parameters which determine the potency of mixing, such as viscosity, total solid content and digester design. Empirical data demonstrated by various researchers regarding rheological characteristics is compared and reviewed. Consequently, close attention should be paid toward the optimization of mixing in terms of its speed, mixing time and impeller geometry, especially during different stages of the digestion process (hydrolysis, acidogenesis, acetogenesis and methanogenesis). Finally, readers will be guided to the extensive publications regarding optimization, directions of future research, and troubleshooting of the mixing operation in an anaerobic digester. This investigation will help to improve mixing efficiency with biogas plants. HIGHLIGHTSEffect of shear rate on different stages of an anaerobic digestion process. Methane content varies with the variation in mixing speeds. Mixing effect is significant when the total solid content is higher. Intermittent mixing is favorable when compared to continuous mixing. The geometry of the digester and mixer is essential to evaluate digester mixing. ARTICLE HISTORY

show abstract

“…Các nghiên cứu của Lin and Pearce (1991), Karim et al (2005) và Kaparaju et al (2008) cho rằng việc khuấy trộn giúp cải thiện khí sinh học từ nhiều loại nguyên liệu khác nhau. Theo Keanoi et al (2014) việc khuấy trộn bể phân hủy chứa phân bò và chất thải nông nghiệp đã làm tăng 7,56% lượng khí sinh học. Nói chung, việc khuấy trộn giúp đạt được sự đồng nhất của chất nền và sự phân bố đồng đều các chất dinh dưỡng, pH, nhiệt độ trong bể phân hủy và giúp gia tăng năng suất sinh khí sinh học.…”

Section: Giới Thiệuunclassified

Ảnh hưởng của khuấy trộn đến quá trình sản xuất khí sinh học từ bùn thải nuôi tôm siêu thâm canh

Nguyễn,

Trương,

Đinh

et al. 2023

CTUJSVN

View full text Add to dashboard Cite

Nghiên cứu này đã đánh giá ảnh hưởng của tần suất khuấy trộn bùn xi phông từ nuôi tôm siêu thâm canh lên sản xuất khí sinh học. Ủ yếm khí theo mẻ được thực hiện, gồm 5 nghiệm thức: không khuấy trộn (NS), 1 lần (1T), 2 lần (2T), 4 lần (4T) và 8 lần (8T) cho một ngày với thời gian khuấy trộn 2 phút. Tỷ lệ nạp bùn xi phông là đồng nhất ở mỗi nghiệm thức với 20 g chất rắn bay hơi/L. Kết quả phản ánh rằng năng suất sinh khí mê-tan (CH4) ở các nghiệm thức 1T, 2T và 4T cao hơn có ý nghĩa so với nghiệm thức NS lần lượt là 10,01%, 5,99% và 4,2%. Nghiên cứu này cũng tìm thấy một mối tương quan nghịch có ý nghĩa giữa năng suất sinh khí CH4 và số lần khuấy trộn dung dịch ủ. Điều lưu ý là, ở mức khuấy trộn cao nhất (8 lần/ngày) cho năng suất sinh khí CH4 tương đồng với không khuấy trộn.

show abstract

Effect of With/Without Agitationof Agricultural Waste on Biogas Production From Anaerobic Co-Digestion-a Small Scale

Cited by 15 publications

References 10 publications

Hygienization and microbial metabolic adaptation during anaerobic co-digestion of swine manure and corn stover

Hygienization and microbial metabolic adaptation during anaerobic co-digestion of swine manure and corn stover

Impact of mixing intensity and duration on biogas production in an anaerobic digester: a review

Ảnh hưởng của khuấy trộn đến quá trình sản xuất khí sinh học từ bùn thải nuôi tôm siêu thâm canh

Contact Info

Product

Resources

About