Effect of a high strength chemical industry wastewater on microbial community dynamics and mesophilic methane generation

Venkatakrishnan, Harish; Tan, Yi; Majid, Maszenan bin Abdul; Pathak, Santosh; Sendjaja, Antonius Yudi; Li, Danzhen; Liu, Jerry Jian Lin; Zhou, Yan; Ng, Wun Jern

doi:10.1016/s1001-0742(13)60515-x

Cited by 9 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high degree of change in the OBW inoculum, irrespective of the substrate, indicates that the methanogenic community in the inoculum had not reached steady state yet, since, in general, during stable anaerobic digestion a static methanogenic community is observed, which is not strongly influenced by a change in substrate (Shin et al ., 2010 ; Ritari et al ., 2012 ; De Vrieze et al ., 2013a,b ; Regueiro et al ., 2014 ; Town et al ., 2014 ; Venkatakrishnan et al ., 2014 ). The endurance of the Methanomicrobiales population in the treatment with the liquid manure substrate indicates that both the acetoclastic and hydrogenotrophic pathway are used for methane production from liquid manure.…”

Section: Discussionmentioning

confidence: 99%

Inoculum selection influences the biochemical methane potential of agro‐industrial substrates

Vrieze

Raport

Willems³

et al. 2015

Microbial Biotechnology

View full text Add to dashboard Cite

Obtaining a reliable estimation of the methane potential of organic waste streams in anaerobic digestion, for which a biochemical methane potential (BMP) test is often used, is of high importance. Standardization of this BMP test is required to ensure inter-laboratory repeatability and accuracy of the BMP results. Therefore, guidelines were set out; yet, these do not provide sufficient information concerning origin of and the microbial community in the test inoculum. Here, the specific contribution of the methanogenic community on the BMP test results was evaluated. The biomethane potential of four different substrates (molasses, bio-refinery waste, liquid manure and high-rate activated sludge) was determined by means of four different inocula from full-scale anaerobic digestion plants. A significant effect of the selected inoculum on the BMP result was observed for two out of four substrates. This inoculum effect could be attributed to the abundance of methanogens and a potential inhibiting effect in the inoculum itself, demonstrating the importance of inoculum selection for BMP testing. We recommend the application of granular sludge as an inoculum, because of its higher methanogenic abundance and activity, and protection from bulk solutions, compared with other inocula.

show abstract

Section: Discussionmentioning

confidence: 99%

Inoculum selection influences the biochemical methane potential of agro‐industrial substrates

Vrieze

Raport

Willems³

et al. 2015

Microbial Biotechnology

View full text Add to dashboard Cite

show abstract

“…This inhibitive effect diminished seven days later and was followed by a steep rise of Bchl a in the following days. Results showed an important effect of organic loading rate on enzyme activity [31], suggesting that strength from the ions and organic nutrients regulated the photosynthesis of photosynthetic microorganisms [9,32]. The increasing non-soluble particles and soluble pigments were another potential factors affecting growth performances by changing the refractive indexes of algae substrates, since smaller particles, regardless of shape, generally inhibited light penetration into the reactor more than larger particles [33].…”

Section: Growth Performance Of R Palustris With Different Algae Subsmentioning

confidence: 99%

Nutrient Recovery From Cyanobacteria Biomasses Using Purple Nonsulfur Bacterium Rhodopseudomonas palustris

Tian¹,

Wu²,

Feng³

et al. 2017

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Occurrences of harmful cyanobacterial blooms are a worldwide environmental problem in most eutrophic lake ecosystems. But what should be noticed is that cyanobacteria can be used as a useful resource due to the wide range of metabolites they produce. Nutrient partitioning using purple nonsulfur bacteria (PNSB) has the potential to biologically concentrate nutrients. The present study evaluated the kinetics of nutrients released from decomposed field blue green algae (BGA) biomasses. The potential of nutrient acquisition from decomposed BGA biomasses for culturing Rhodopseudomonas palustris (R. palustris) was investigated via fed-batch experiments. Results indicated that R. palustris stimulated in algae substrates with algae biomasses ranging from 3.33 to 10 g/L. Removal efficiencies of N and P in the stationary phase of growth were at least 40% and 95%, respectively, of all the nitrogen (N) and phosphorus (P) released. Additionally, the cellular contents like total lipid and poly-β-hydroxybutyrate (PHB), as well as the fatty acids produced by R. palustris, were consistent. Hence, practice based on the bacterial production for the nutrient recovery from BGA biomasses provides a new insight in field algae disposal. It will lower the chances of secondary pollution due to algae decay and produce giant cells of R. palustris and surely will prosper the industries applying R. palustris.

show abstract

PCR–DGGE Analysis on Microbial Community Structure of Rural Household Biogas Digesters in Qinghai Plateau

et al. 2017

View full text Add to dashboard Cite

To investigate contribution of environmental factor(s) to microbial community structure(s) involved in rural household biogas fermentation at Qinghai Plateau, we collected slurry samples from 15 digesters, with low-temperature working conditions (11.1-15.7 °C) and evenly distributed at three counties (Datong, Huangyuan, and Ledu) with cold plateau climate, to perform polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and further sequencing. The bacterial communities in the total 15 digesters were classified into 38 genera with Mangroviflexus (12.1%) as the first dominant, and the archaeal communities into ten genera with Methanogenium (38.5%) as the most dominant. For each county, the digesters with higher biogas production, designated as HP digesters, exclusively had 1.6-3.1 °C higher fermentation temperature and the unique bacterial structure composition related, i.e., unclassified Clostridiales for all the HP digesters and unclassified Marinilabiliaceae and Proteiniclasticum for Ledu HP digesters. Regarding archaeal structure composition, Methanogenium exhibited significantly higher abundances at all the HP digesters and Thermogymnomonas was the unique species only identified at Ledu HP digesters with higher-temperature conditions. Redundancy analysis also confirmed the most important contribution of temperature to the microbial community structures investigated. This report emphasized the correlation between temperature and specific microbial community structure(s) that would benefit biogas production of rural household digesters at Qinghai Plateau.

show abstract

Effect of a high strength chemical industry wastewater on microbial community dynamics and mesophilic methane generation

Cited by 9 publications

References 30 publications

Inoculum selection influences the biochemical methane potential of agro‐industrial substrates

Inoculum selection influences the biochemical methane potential of agro‐industrial substrates

Nutrient Recovery From Cyanobacteria Biomasses Using Purple Nonsulfur Bacterium Rhodopseudomonas palustris

PCR–DGGE Analysis on Microbial Community Structure of Rural Household Biogas Digesters in Qinghai Plateau

Contact Info

Product

Resources

About