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Photoluminescence properties investigation of germanium inserted biosilica generated by bioreactor culture of marine diatom Nitzschia frustulum

Creator:: Qin, Tian
Abstract:: The purpose of this research was to investigate the optoelectronic properties of the Ge doped biosilica, mainly focused on the photoluminescence (PL) properties of diatom frustules of N. frustulum that contain metabolically inserted germanium oxide produced by a two-stage photobioreactor cultivation process. In order to explain the observed PL intensity...
Resource Type:: Masters Thesis
Full Text:: temperature was kept at 22°C in an incubator (Precision Scientific low temperature incubator 815). Twelve

Experimental approach for the determination of lignin modification by manganese peroxidase

Creator:: Goby, Jeffrey D.
Abstract:: Degradation of lignin to simpler compounds is desirable for removing residual lignin during paper manufacture and accessing biomass carbohydrates for biofuel production, among other purposes. Lignin transformation using enzymes found in white rot fungi, some of nature's most efficient lignin-degrading organisms, offers a more environmentally benign, selective, and possibly less...
Resource Type:: Masters Thesis

Kinetic and molecular effects of sulfate reduction on a dechlorinating culture under chemostat growth conditions

Creator:: Berggren, Dusty Rose V.
Abstract:: Chlorinated ethenes are common groundwater contaminants that may be treated through in-situ bioremediation. Relationships between the reducing environment, available electron donors and acceptors, reaction kinetics, and microbial community composition must be further understood to successfully engineer remediation schemes in the complex subsurface environment. This thesis work investigated the effect of...
Resource Type:: Masters Thesis

Cultivation of suspension cultures of Laminaria saccharina (Phaeophyceae) gametophytes in tubular, planar, and stirred tank photobioreactors

Creator:: Mullikin, Ronald K.
Resource Type:: Masters Thesis

Fouling characteristics of cooling tower water containing corrosion inhibitors

Creator:: Santoso, Elisabeth
Abstract:: The fouling characteristics of cooling tower water containing various corrosion inhibitors and other additives on heat transfer surface have been investigated. Corrosion inhibitors investigated included zinc-chromate and phosphates. In addition, additives including polyacrylate and phosphonate (HEDP and AMP) were used to determine their effectiveness as antifoulants. The tests were conducted...
Resource Type:: Dissertation
Full Text:: -ed)/ec)) to yield the values of ec and Rf*. Rf is the fouling resistance predicted by the regression

The effect of copolymer and iron on the fouling characteristics of cooling tower water containing corrosion inhibitors

Creator:: Abu-Al-Saud, Abdullah A.
Abstract:: Various antifoulant treatment programs and the considerations necessary for the effective use of such programs were examined. Two different groups of tests, with and without iron contamination, have been carried out on the effectiveness of several of the state-of-the-art copolymers (PA, HEDP, AA/HPA, AA/MA, SS/MA and AA/SA) in the inhibition...
Resource Type:: Dissertation

A study of liquor side fouling in sulfite spent liquor evaporators

Creator:: Yoon, Woon-young
Abstract:: The effects of possible operating variables such as flow rate, surface temperature, bulk temperature, solids contents, sulfate addition and pH on the fouling of sulfite spent evaporators were studied. The study pointed out that the Ca⁺⁺ concentration difference between heated surface and bulk is the most important factor for fouling...
Resource Type:: Dissertation

Measuring and modeling solids movement in a large, cold fluidized-bed test facility

Creator:: Daous, Muhammad A.
Abstract:: Solids movement in large-particle fluidized beds was studied in an 18 in x 18 in (46 cm x 46 cm) tube-filled, cold fluidized bed test facility. Direct measurement of local solid mass flux in two dimensions at various locations inside the bed was made possible by a new instrument developed...
Resource Type:: Dissertation

Effects of water quality and surface temperature on the scaling characteristics of cooling tower water

Creator:: Lahm, Lawrence
Abstract:: The fouling of cooling tower water was investigated as a function of heater surface temperature and water quality. In particular, the effects on fouling of the addition of calcium in excess of the amounts required for saturation were examined. First, the average bulk water temperature was 97 ± 1 degree...
Resource Type:: Masters Thesis

Calcium carbonate scaling characteristics of cooling tower water

Creator:: Coates, Kenneth Edwin
Abstract:: Scaling characteristics of calcium carbonate on a heated surface in cooling tower water was investigated. Bulk temperature was maintained constant at 95°F. Flow velocities and surface temperatures ranged from 3 ft/sec to 10.3 ft/sec and from 105°F to 170°F respectively. City water was used as make-up for two different water...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Photoluminescence properties investigation of germanium inserted biosilica generated by bioreactor culture of marine diatom Nitzschia frustulum

Experimental approach for the determination of lignin modification by manganese peroxidase

Kinetic and molecular effects of sulfate reduction on a dechlorinating culture under chemostat growth conditions

Cultivation of suspension cultures of Laminaria saccharina (Phaeophyceae) gametophytes in tubular, planar, and stirred tank photobioreactors

Fouling characteristics of cooling tower water containing corrosion inhibitors

The effect of copolymer and iron on the fouling characteristics of cooling tower water containing corrosion inhibitors

A study of liquor side fouling in sulfite spent liquor evaporators

Measuring and modeling solids movement in a large, cold fluidized-bed test facility

Effects of water quality and surface temperature on the scaling characteristics of cooling tower water

Calcium carbonate scaling characteristics of cooling tower water

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