scholarly journals INFLUENCE OF NITROGEN, ACETATE AND PROPIONATE ON HYDROGEN PRODUCTION FROM PINEAPPLE WASTE EXTRACT BY Rhodospirillum rubrum

2005 ◽  
Vol 3 (1) ◽  
pp. 93-117 ◽  
Author(s):  
Piyawadee Ruknongsaeng ◽  
Alissara Reungsang ◽  
Samars Moonamart ◽  
Paiboon Danvirutai
Keyword(s):  
Hydrogen Production ◽  
Rhodospirillum Rubrum ◽  
Pineapple Waste ◽  
Waste Extract

scholarly journals Bio-Hydrogen Production from Pineapple Waste Extract by Anaerobic Mixed Cultures

Energies ◽  
2013 ◽  
Vol 6 (4) ◽  
pp. 2175-2190 ◽  
Author(s):  
Alissara Reungsang ◽  
Chakkrit Sreela-or
Keyword(s):  
Hydrogen Production ◽  
Mixed Cultures ◽  
Pineapple Waste ◽  
Waste Extract

Characteristic properties of crude pineapple waste extract for bromelain purification by membrane processing

2015 ◽  
Vol 52 (11) ◽  
pp. 7103-7112 ◽  
Author(s):  
M. Z. M. Nor ◽  
L. Ramchandran ◽  
M. Duke ◽  
T. Vasiljevic
Keyword(s):  
Pineapple Waste ◽  
Membrane Processing ◽  
Waste Extract

Isolation and Identification of Photosynthetic Bacteria and their Hydrogen Production Characterization

2012 ◽  
Vol 512-515 ◽  
pp. 527-533
Author(s):  
Yan Yan Zhu ◽  
Quan Guo Zhang ◽  
Bin Xu Han ◽  
Yan Yan Jing
Keyword(s):  
Hydrogen Production ◽  
Photosynthetic Bacteria ◽  
Culture Medium ◽  
Gene Sequence ◽  
Rhodospirillum Rubrum ◽  
Rhodobacter Capsulatus ◽  
Solid Medium ◽  
Production Capacity ◽  
Sequence Information ◽  
Isolation And Identification

Using special culture medium, dominant photosynthetic bacterias were enriched from sewage silt and paddy fields with plentiful light and organic compounds. Five strains of photosynthetic bacteria capable of producing hydrogen were purified and isolated by gradual dilution and double—deck solid medium. The analysis of the gene sequence information of 1 6SrDNA was carried out, and the five strains were identified as Rhodospirillum rubrum,R.capsulata, R.pulastris, Rhodobacter capsulatus, Rhodobacter capsulatus . Moreover, it was found that with Optimized medium formula, hydrogen production can be achieved 204h, the maximum hydrogen production capacity of 3.41L, the maximum hydrogen production rate was 44.17ml / (L • h),the highest hydrogen content of 46.73%.

Pineapple Waste Extract for Preventing Oxidation in Model Food Systems

2016 ◽  
Vol 81 (7) ◽  
pp. C1622-C1628 ◽  
Author(s):  
Francisco Segovia Gómez ◽  
María Pilar Almajano Pablos
Keyword(s):  
Food Systems ◽  
Pineapple Waste ◽  
Model Food ◽  
Waste Extract

scholarly journals Hydrogen Production from Synthesis Gas Using the Photosynthetic Bacterium Rhodospirillum rubrum

2005 ◽  
Vol 5 (1) ◽  
pp. 35
Author(s):  
Ghasem Najafpour ◽  
Habibollah Younesi
Keyword(s):  
Mass Transfer ◽  
Carbon Source ◽  
Hydrogen Production ◽  
Synthesis Gas ◽  
Rhodospirillum Rubrum ◽  
Anaerobic Bacteria ◽  
Photosynthetic Bacterium ◽  
Attractive Alternative ◽  
Agitation Rate ◽  
Acetate Concentration

Production of biological hydrogen by anaerobic photosynthetic bacteria, specifically Rhodospirillum rubrum, from synthesis gas was successfully conducted at ambient temperature and pressure. The influence of initial acetate concentration as the substrate for microbial growth was investigated in a batch system. Series of experiments were conducted using serum bottles as bioreactor. The agitation rate and light intensity were adjusted at 200 rpm and 1,000 lux, respectively. The concentration of acetate as carbon source was varied from 0.5 to 3.0 g/I. It was observed that the increase in concentration of the carbon source from 2.5 to 3 g/l resulted in the decrease both in the growth of the microorganism and in hydrogen production rate. Experimental results showed that the optimum acetate concentration would be from 1 to 2 g/I. The resulting data also showed that in 1-2 g/I acetate, highest hydrogen formation and cell concentration were obtained. Additional acetate in the initial culture medium inhibited the growth of R. rubrum. An inverse relationship between acetate concentration and initial cell growth was observed. This article presents a method to calculate the mass transfer coefficient for gaseous substrates and the process parameters involved in a gas and liquid fermentation system. The procedure had been defined by experimental data for the bioconversion of CO to C02' while H20 is converted into hydrogen. Hence, a biologically-based water-gas shift reaction provided an attractive alternative improvement for renewable resources to achieve higher hydrogen production. Keywords: Anaerobic bacteria, batch culture, coefficient, CO uptake rate, mass transfer, photobiological hydrogen, and Rhodospirillum rubrum.

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