| View Larger Image | Characteristics of anaerobic ammonia removal by a mixed culture of hydrogen producing photosynthetic bacteria [An article from: Bioresource Technology] | Digitalby H. Takabatake (Author), K. Suzuki (Author), I.B. Ko (Author), T. Noike (Author)
| List Price: | $8.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Elsevier | | Publication Date: | November 01, 2004 |
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Product Description
This digital document is a journal article from Bioresource Technology, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: It is known that the presence of ammonia inhibits hydrogen production by photosynthetic bacteria. In order to avoid it, a two-step process containing ammonia removal and hydrogen production was investigated in this study. Firstly, the effects of carbonate presence on ammonia removal by photosynthetic bacteria were investigated by the vial tests because it is known that the uptake of volatile fatty acids (VFAs) sometimes requires carbonate. The results of them showed that the presence of carbonate promoted the uptake of VFAs and ammonia. Especially, the uptake of propionate and/or butyrate required the presence of carbonate. The results of the batch experiments of two-step hydrogen production showed that the depletion of ammonia triggered hydrogen evolution. Herein, the presence of albumin did not inhibit hydrogen evolution and preferably it increased the hydrogen production rate. And the VFA-C/NH"4-N ratio in substrate fed into two-step hydrogen production process should be more than 6.0. |
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