scholarly journals The effect of free nitrous acid pretreatment on the anaerobic digestibility of thickened waste activated sludge

2021 ◽  
Author(s):  
Frances Chi Okoye
Keyword(s):  
Continuous Flow ◽  
Flow System ◽  
Acid Pretreatment ◽  
Free Nitrous Acid ◽  
Continuous Flow System ◽  
Batch Tests ◽  
Sludge Pretreatment ◽  
Significant Research ◽  
Anaerobic Digestibility ◽  
Flow Experiments

Sludge pretreatment technologies as an avenue to improve solids handling in a WWTP has gained attention and significant research efforts are being directed towards studying several available techniques. The use of FNA as a chemical pretreatment for the AD has shown the potential to enhance the hydrolysis stage by releasing the internal organic matter of TWAS via its biocidal action. The effect of FNA on improving the biodegradability of TWAS was investigated in this thesis. The effect of the FNA on the TWAS characteristics and the methane production in batch tests was first studied. The optimum FNA dose was determined from the batch tests based on both solubilization and methane yields and then tested in a semi-continuous flow system. As the semi-continuous flow system failed when the optimum FNA dose obtained from the batch study was used, another set of semi-continuous flow experiments were conducted using different FNA doses

scholarly journals The effect of free nitrous acid pretreatment on the anaerobic digestibility of thickened waste activated sludge

2021 ◽  
Author(s):  
Frances Chi Okoye
Keyword(s):  
Continuous Flow ◽  
Flow System ◽  
Acid Pretreatment ◽  
Free Nitrous Acid ◽  
Continuous Flow System ◽  
Batch Tests ◽  
Sludge Pretreatment ◽  
Significant Research ◽  
Anaerobic Digestibility ◽  
Flow Experiments

Sludge pretreatment technologies as an avenue to improve solids handling in a WWTP has gained attention and significant research efforts are being directed towards studying several available techniques. The use of FNA as a chemical pretreatment for the AD has shown the potential to enhance the hydrolysis stage by releasing the internal organic matter of TWAS via its biocidal action. The effect of FNA on improving the biodegradability of TWAS was investigated in this thesis. The effect of the FNA on the TWAS characteristics and the methane production in batch tests was first studied. The optimum FNA dose was determined from the batch tests based on both solubilization and methane yields and then tested in a semi-continuous flow system. As the semi-continuous flow system failed when the optimum FNA dose obtained from the batch study was used, another set of semi-continuous flow experiments were conducted using different FNA doses

Effect of electroporation in a continuous flow system on bioaccumulation of magnesium, zinc and calcium ions in Lactobacillus rhamnosus B 442 cells

2021 ◽  
Vol 140 ◽  
pp. 107769
Author(s):  
Sujka Monika ◽  
Pankiewicz Urszula ◽  
Flisar Karel ◽  
Miklavčič Damijan ◽  
Haberl-Meglič Sasa
Keyword(s):  
Calcium Ions ◽  
Continuous Flow ◽  
Flow System ◽  
Lactobacillus Rhamnosus ◽  
Continuous Flow System

Developments of a continuous-flow system with immobilized biocatalysts towards sustainable bioprocessing

2021 ◽  
Author(s):  
Apisit Naramittanakul ◽  
Supacha Buttranon ◽  
A. Petchsuk ◽  
Pimchai Chaiyen ◽  
Nopphon Weeranoppanant
Keyword(s):  
Continuous Flow ◽  
Flow System ◽  
Continuous Flow System ◽  
P Immobilization ◽  
Feasible Solutions

Immobilization methods have emerged as feasible solutions for increasing the re-usability of biocatalysts, and for simplifying their separation from the desired products. Immobilized biocatalysts can directly be applied to a...

Kinetic study on degradation of gaseous acetone over thin-film TiO2 photocatalyst in a continuous flow system

2007 ◽  
Vol 90 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Sung Hyun Kim ◽  
Sang Bum Kim ◽  
Gyung Soo Kim ◽  
Hyun Tae Jang ◽  
Sung Chang Hong
Keyword(s):  
Thin Film ◽  
Kinetic Study ◽  
Continuous Flow ◽  
Flow System ◽  
Tio2 Photocatalyst ◽  
Continuous Flow System

scholarly journals Acclimatization Study for Biohydrogen Production from Palm Oil Mill Effluent (POME) in Continuous-flow System

2018 ◽  
Vol 34 ◽  
pp. 02054 ◽  
Author(s):  
N. Idris ◽  
N.A. Lutpi ◽  
Y. S. Wong ◽  
T.N. Tengku Izhar
Keyword(s):  
Steady State ◽  
Palm Oil ◽  
Continuous Flow ◽  
Flow System ◽  
Oxygen Demand ◽  
Biohydrogen Production ◽  
Palm Oil Mill Effluent ◽  
Continuous Flow System ◽  
Thermophilic Fermentation ◽  
Palm Oil Mill

This research aims to study the acclimatization phase for biohydrogen production from palm oil mill effluent (POME) by adapting the microorganism to the new environment in continuous-flow system of thermophilic bioreactor. The thermophilic fermentation was continuously loaded with 0.4 L/day of raw POME for 35 days to acclimatize the microorganism until a steady state of biohydrogen production was obtained. The significance effect of acclimatization phase on parameter such as pH, microbial growth, chemical oxygen demand (COD), and alkalinity were also studied besides the production of biogas. This study had found that the thermophilic bioreactor reach its steady state with 1960 mL/d of biogas produced, which consist of 894 ppm of hydrogen composition.

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