Assessment of biological activity during temperature changes in a bench-scale sequencing batch reactor fed with synthetic medium containing lignin

1998 ◽  
Vol 37 (4-5) ◽  
Keyword(s):  
Biological Activity ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Synthetic Medium ◽  
Temperature Changes ◽  
Bench Scale

Assessment of biological activity during temperature changes in a bench-scale sequencing batch reactor fed with synthetic medium containing lignin

1998 ◽  
Vol 37 (4-5) ◽  
pp. 251-254 ◽  
Author(s):  
Klaus Kriebitzsch ◽  
Elke Adamietz ◽  
Christian Schiegl ◽  
Brigitte Helmreich ◽  
Peter A. Wilderer ◽  
...  
Keyword(s):  
Size Distribution ◽  
Extracellular Polymeric Substances ◽  
Batch Reactor ◽  
Synthetic Medium ◽  
Molecular Size ◽  
Paper Mill ◽  
Redox Activity ◽  
Significant Shift ◽  
Paper Mill Effluents ◽  
Bench Scale

The influence of temperature on activated sludge in a bench-scale SBR fed with a synthetic medium simulating paper mill effluents was determined using biological methods based on the measurement of enzymatic activities. Redox activity inside cells and in the extracellular polymeric substances as well as the proportion of active cells in the sludge were measured by the reduction of the tetrazolium salts XTT and CTC, respectively. A significant shift in the size distribution of lignin at 30°C correlated with a maximum of extracellular redox activity. The percentage of active cells in the biocoenosis was independent of temperature. α-glucosidase and L-alanine-aminopeptidase activities were steady at 20, 30 and 40°C. After shifting the temperature to 50°C there was an enormous short-time increase of both enzyme activities because of the change from mesophilic to thermophilic conditions. Of the biological parameters tested, only extracellular redox activity correlated with degradative activity as detected by a change in molecular size distribution of lignin molecules.

Long-term performance and microbial characteristics of the anammox-enriched granular sludge cultivated in a bench-scale sequencing batch reactor

2017 ◽  
Vol 120 ◽  
pp. 125-135 ◽  
Author(s):  
Dominika Sobotka ◽  
Agnieszka Tuszynska ◽  
Przemyslaw Kowal ◽  
Slawomir Ciesielski ◽  
Krzysztof Czerwionka ◽  
...  
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Granular Sludge ◽  
Bench Scale ◽  
Microbial Characteristics ◽  
Long Term Performance ◽  
Term Performance

Rapid cultivation of aerobic granule for the treatment of solvent recovery raffinate in a bench scale sequencing batch reactor

2016 ◽  
Vol 160 ◽  
pp. 1-10 ◽  
Author(s):  
Bei Long ◽  
Chang-zhu Yang ◽  
Wen-hong Pu ◽  
Jia-kuan Yang ◽  
Guo-sheng Jiang ◽  
...  
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Aerobic Granule ◽  
Solvent Recovery ◽  
Bench Scale

Peranan BOD biosensor untuk proses optimasi pengolahan limbah sintetik di SBR

2019 ◽  
Vol 1 (2) ◽  
pp. 1
Author(s):  
Lindawati Lindawati
Keyword(s):  
Biochemical Oxygen Demand ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Oxygen Demand

Sebuah Sequencing Batch Reactor (SBR) digunakan untuk mengevaluasi peranan Biochemical Oxygen Demand (BOD) biosensor dalam proses optimasi proses pengolahan nutrien karbon, nitrogen dan fosfat. Hasil penelitian menunjukkan bahwa BOD biosensor dapat dipergunakan untuk penentuan karbon organik, sehingga reduksi siklus SBR dapat dilakukan dan efisiensi proses meningkat. Pola konsumsi karbon organik ditemukan dengan adanya ‘tanda diam’ pada fase anoksik/ anaerobik, di mana dari tanda ini, fase aerobik dapat segera dimulai. Reduksi durasi siklus SBR dari 8 jam menjadi 4 jam meningkatkan efiesiensi pengolahan C, N dan P yang meningkat pula (hampir dua kali lebih tinggi).

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