Biological activated carbon

This study aimed to investigate the possibility of degrading the pesticides of the BAC process. Based on the promising results in the full-scale reactor receiving river water, a lab-scale reactor was installed to study the pesticide removal mechanism and the contribution of nitrifying bacteria to the removal efficiency.

13p vifilm 24-09-2024 2 1   Download

In this study, 341 Bacillus sp. strains were isolated from agricultural soils of Turkey. The potent extracellular lipase producer was selected. It was identified by 16S rRNA, named as Bacillus cereus ATA179. Optimal nutritional and physical parameters for lipase production were determined. Sucrose as the carbon source, (NH4 )2 HPO4 as the nitrogen source, CaCl2 as the metal ion were obtained. The best results of physical parameters were stated at 45°C, pH 7.0, shaking rate 50 rpm, inoculation amount 7% and inoculum age 24 h.

14p thiencuuchu 27-11-2021 19 2   Download

This study aims to provide basic knowledge of carbon storage capacity and communities characteristics of seagrass beds in some typical coastal lagoons in the central of Vietnam. These important knowledges will be applied to activities of conservation, caculation of the carbon market, and reducing CO2 emissions in the future in Vietnam.

31p larachdumlanat129 20-01-2021 19 3   Download

The bioflocculation efficiency was depended on the pH, carbon sources, the initial algae concentrations, bacteria strains, and the inital bioflocculant-producing bacteria concentrations. The temperature lightly affected the bioflocculation, no noticeable behavioral or activity changes were observed in mice that were orally administrated with four bacterial strains, and no treatment-related illness or death occurred after 72 hours.

13p shiwo_ding7 05-06-2019 19 3   Download

An efficient bacterial expression system of cyanobacterium Synechocystissp. PCC 6803 heme oxygenase gene, ho-1, has been constructed, using a synthetic gene. A soluble protein was expressedat high levels and was highly purified, for the first time. The protein binds equimolar free hemin to catabolize the boundhemin to ferric-bili-verdin IXa in the presence of oxygen andreducing equivalents, showing the heme oxygenase activity. During the reaction, verdoheme intermediate is formed with the evolution of carbon monoxide. ...

12p tumor12 20-04-2013 32 4   Download

The fermentation ofb-alanine by Clostridium propionicumproceeds via activation to the CoA-thiol ester, followed by deamination to acryloyl-CoA, which is also an intermediate in the fermentation ofl-alanine. By shifting the organism from the carbon and energy source a-alanine to b-alanine, the enzyme b-alanyl-CoA:ammonia lyase is induced 300-fold (30% of the soluble protein). The low basal lyase activity is encoded by theacl1gene, whereas the almost identicalacl2gene (six amino acid substi-tutions) is responsible for the high activity after growth on b-alanine....

0p awards 05-04-2013 44 3   Download

Formate dehydrogenase from Candida boidinii(CboFDH) catalyses the oxidation of formate anion to carbon dioxide with concomitant reduction of NAD + to NADH. CboFDH is highly specific to NAD + and virtually fails to catalyze the reaction with NADP + . Based on structural informa-tion for CboFDH, the loop region betweenb-sheet 7 and a-helix 10 in the dinucleotide-binding fold was predicted as a principal determinant of coen-zyme specificity.

11p galaxyss3 07-03-2013 28 3   Download

Synechocystissp. PCC 6803 exhibits light-activated heterotrophic growth (LAHG) under dark conditions with glucose as a carbon source. The light activation is remarkable at a late period of photoautotrophic preculture, such as the late-linear and stationary growth phases.

12p vinaphone15 27-02-2013 37 4   Download

The glyoxylate cycle plays an essential role for anaplerosis of oxaloacetate during growth of microorganisms on carbon sources such as acetate or fatty acids and has been shown to contribute to virulence of several patho-gens.

15p cosis54 05-01-2013 41 4   Download