Hydrogen production by Rhodopseudomonas palustris CQK 01 in a continuous photobioreactor with ultrasonic treatment

Wang, Yongzhong; Xie, Xiaobao; Zhu, Xun; Liu, Qiang; Chen, Rong; Xu, Zhao; Lee, Dong Hoon

doi:10.1016/j.ijhydene.2012.02.187

Cited by 22 publications

(1 citation statement)

References 24 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The beneficial effects and potential significance of ultrasound has been shown in biological systems and biotechnological processes, particularly within the low intensity ranges (Biradar et al 2010;Wang et al 2012;Subhedar et al 2015). The variety of physical and chemical effects induced by ultrasound irradiation is mainly due to the acoustic cavitation; a localised pressure drop below the evaporating pressure appears at the liquid gas interface (Guo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

First results on biostimulation of denitrifying activated sludge using low frequency ultrasound

youcef

Pauss

Sarde

et al. 2017

Water & Environment J

View full text Add to dashboard Cite

Reduction of nitrate to nitrogen is critical for wastewater treatment process. The present work proposed a promising approach to improve the activity of denitrifying activated sludge by using low frequency ultrasonic treatment. Batch activity assays showed that when ultrasound was applied, denitrification performance was 2.64 higher than the control. Kinetic analysis of nitrate removal rate versus ultrasonic power and duty cycle was performed to investigate the effect of operational parameters on activated sludge activities. The best stimulating effect was observed at 40 W ultrasonic power and 40% duty cycle. The above results demonstrated that ultrasonic stimulation can be used as a technique for enhancing bacterial activities for water treatment. Studies of other parameters that also affect the denitrification under ultrasound are under way.

show abstract

Section: Introductionmentioning

confidence: 99%

First results on biostimulation of denitrifying activated sludge using low frequency ultrasound

youcef

Pauss

Sarde

et al. 2017

Water & Environment J

View full text Add to dashboard Cite

show abstract

Reusing colored industrial wastewaters in a photofermentation for enhancing biohydrogen production by using ultrasound stimulated Rhodobacter sphaeroides

Budiman

Ramanan

et al. 2017

Environ Sci Pollut Res

View full text Add to dashboard Cite

One-time ultrasonication pre-treatment of Rhodobacter sphaeroides was evaluated for improving biohydrogen production via photofermentation. Batch experiments were performed by varying ultrasonication amplitude (15, 30, and 45%) and duration (5, 10, and 15 min) using combined effluents from palm oil as well as pulp and paper mill as a single substrate. Experimental data showed that ultrasonication at amplitude 30% for 10 min (256.33 J/mL) achieved the highest biohydrogen yield of 9.982 mL H/mL with 5.125% of light efficiency. A maximum COD removal of 44.7% was also obtained. However, when higher ultrasonication energy inputs (>256.33 J/mL) were transmitted to the cells, biohydrogen production did not improve further. In fact, 20.6% decrease of biohydrogen yield (as compared to the highest biohydrogen yield) was observed using the most intense ultrasonicated inoculum (472.59 J/mL). Field emission scanning electron microscope images revealed the occurrence of cell damages and biomass losses if ultrasonication at 472.59 J/mL was used. The present results suggested that moderate ultrasonication pre-treatment was an effective technique to improve biohydrogen production performances of R. sphaeroides.

show abstract

Enhancing Hydrogen Productivity of Photosynthetic Bacteria from the Formulated Carbon Source by Mixing Xylose with Glucose

Chuan

Wang

et al. 2021

Appl Biochem Biotechnol

View full text Add to dashboard Cite

Hydrogen production by Rhodopseudomonas palustris CQK 01 in a continuous photobioreactor with ultrasonic treatment

Cited by 22 publications

References 24 publications

First results on biostimulation of denitrifying activated sludge using low frequency ultrasound

First results on biostimulation of denitrifying activated sludge using low frequency ultrasound

Reusing colored industrial wastewaters in a photofermentation for enhancing biohydrogen production by using ultrasound stimulated Rhodobacter sphaeroides

Enhancing Hydrogen Productivity of Photosynthetic Bacteria from the Formulated Carbon Source by Mixing Xylose with Glucose

Contact Info

Product

Resources

About