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Article
Adsorptive removal of cesium using surface-modified petroleum residue pitch with NaClO
Industrial activities that utilize nuclear technology can cause radioactive contamination in the ecosystems. In particular, cesium (Cs) has problems, such as neurological diseases, when it is exposed and accum...
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Article
Surface modification of petroleum residue-activated carbon using citric acid for enhanced cobalt removal from an aqueous solution
Although the amount of petroleum residues produced from oil refinery processes has increased, there has been limited research for the residues. In this work, we developed petroleum residue-activated carbon (PA...
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Article
Nitrate removal from water phase using Robinia pseudoacacia bark for solving eutrophication
The bio-absorbent of Robinia pseudoacacia (R. pseudoacacia) bark was modified with sulfuric acid and their nitrate removal efficiency in water phase was investigated. At 2.5 ppm, the nitrate removal efficiency of...
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Article
Surface modified nanostructured-TiO2 thin films for removal of Congo red
We synthesized nanostructured TiO2 thin films by the modified sol-gel template method using the polyethylene glycol as filler media. The TiO2 surface modification for both the thin films, i.e., template and non-t...
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Article
Biological Removal of Phosphate at Low Concentrations Using Recombinant Escherichia coli Expressing Phosphate-Binding Protein in Periplasmic Space
During wastewater treatment, phosphate removal is an important and challenging process; thus, diverse technologies, including those derived from biological means, have been devised for efficient phosphate remo...
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Article
A comparative study on antibody immobilization strategies onto solid surface
Antibody immobilization onto solid surface has been studied extensively for a number of applications including immunoassays, biosensors, and affinity chromatography. For most applications, a critical considera...
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Article
Partial nitrification using an electrolytic aerating bioreactor with ammonia-oxidizing bacteria-dominant activated sludge
An electrolytic aerating bioreactor was used to partially nitrify ammonia from wastewater. Activated sludge was cultured for 8 months to increase the population of ammonia-oxidizing bacteria (AOB) and then use...
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Article
Removal of neurotoxic ethyl parathion pesticide by two-stage chemical/enzymatic treatment system using Fenton’s reagent and organophosphorous hydrolase
Organophosphate compounds, which are essential ingredients of pesticide, plasticizer, air fuel, and chemical warfare agents, are serious neurotoxic hazardous materials. Therefore, diverse physical-chemical tre...
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Article
Analysis of methane production inhibition for treatment of sewage sludge containing sulfate using an anaerobic continuous degradation process
The inhibition of methane production in the continuous anaerobic degradation process for the treatment of sewage sludge containing sulfate was investigated. Also, the competition between sulfate-reducing bacte...
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Article
Efficient cell surface display of organophosphorous hydrolase using N-terminal domain of ice nucleation protein in Escherichia coli
Recombinant Escherichia coli systems expressing organophosphorous hydrolase (OPH) have been used for detoxifying toxic organophosphate compounds. However, a whole cell biocatalyst system has an intrinsic problem ...
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Article
Comparative production of green fluorescent protein under co-expression of bacterial hemoglobin inEscherichia coli W3110 using different culture scales
Production of green fluorescent protein (GFP) as a model foreign protein using different culture scales under co-expression ofVitreoscilla hemoglobin (VHb) in the industrialEscherichia coli strain W3110 (a K12 de...
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Article
Co-expression of bacterial hemoglobin overrides high glucose-induced repression of foreign protein expression in Escherichia coli W3110
Co-expression of Vitreoscilla hemoglobin (VHb) can enhance production of foreign proteins in several microorganisms, including Escherichia coli. Production of foreign proteins [green fluorescent protein (GFP) and...
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Article
Effect of aeration on denitrification byOchrobactrum anthropi SY509
Aeration was found to affect the biological denitrification byOchrobactrum anthropi SY509. Although cell growth was vigorous under 1 vvm of aeration and an agitation speed of 400 rpm in a 3-L jar fermentor, almos...
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Article
Removal of phosphate in a sequencing batch reactor by Staphylococcus auricularis
A sequencing batch reactor (SBR) was used to remove phosphate in biological wastewater treatment as an alternative to the activated sludge process, in order to improve the low removal efficiency of phosphate a...
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Article
Production and secretion patterns of cloned glucoamylase in plasmid-harboring and chromosome-integrated recombinant yeasts employing an SUC2 promoter
To understand the differences in production and secretion patterns between plasmid-harboring and chromosome-integrated recombinant yeasts, the two recombinant Saccharomyces cerevisiae yeasts, containing the struc...
