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![Cellulose and Sulfate Degradation in a Biochemical Reactor during Treatment of Mine Drainage için kapak resmi Cellulose and Sulfate Degradation in a Biochemical Reactor during Treatment of Mine Drainage için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Cellulose and Sulfate Degradation in a Biochemical Reactor during Treatment of Mine Drainage
Başlık:
Cellulose and Sulfate Degradation in a Biochemical Reactor during Treatment of Mine Drainage
Yazar:
Ojha, Sweta, author.
ISBN:
9780438111660
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (114 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Advisors: Mark W. Fitch Committee members: Joel G. Buren; Daniel Forciniti.
Özet:
Seventy-two biochemical reactors were set up, and operated using a mixture of chip-bark, horse manure, and gravel as the biochemical treatment substrate. The simulated mine water containing sulfate (1000 mg/l) was pumped into each reactor at a flow rate of 0.5 ml/minute (approximate), giving an empty bed contact time of 8 days. The main idea is that the microorganisms present in horse manure would convert the cellulose in chip-bark into volatile fatty acids. The produced volatile fatty acid would enhance the metabolism of sulfate-reducing bacteria (SRB) initially present in horse manure, which would degrade (and eventually remove) the sulfate from mine-impacted water. At the end of every month, the amount of cellulose remaining in chip-bark samples were calculated using two different methods: NMR, and chemical extraction (acid-base-acid).
An objective of the experiment is analyzing the correlation between cellulose, and sulfate degradation rate. Separately, the ozonation method was evaluated as a potential surrogate for much slower biological degradation. It may be possible to predict the higher degradation rate of cellulose, and hence, degrade (or remove) the sulfate from mine-impacted water using the proposed biochemical process. The percentage of cellulose in fresh chip bark was 52%. There was degradation of 4.5 % cellulose in five months. First order kinetic equation was used to predict the time for exhaustion of cellulose. The time predicted by the designed model is 5 years to react with the maximum degradation (observed by ozone treatment) of chip bark.
Notlar:
School code: 0587
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(688333.1) | 688333-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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