作者： Edison Gil Pavas , Catalina Giraldo
DOI:
关键词: Biodegradation 、 Ammonia 、 Organic chemistry 、 Chemistry 、 Monod equation 、 Wastewater 、 Effluent 、 Bioremediation 、 Environmental chemistry 、 Hydrogen peroxide 、 Cyanide
摘要: This investigation contributes to the study and development of a new photochemical degradation technique (solar artificial light) biological process for treatment non biodegradable highly toxic substances present in wastewater. Efficient pretreatments as photocatalytic are necessary modify structure pollutants, by transforming them into less easy biodegradation allowing complete degradation. The behavior cyanide concentration effluent wastewater (400 mg/L CN -) is evaluated laboratory scale, techniques heterogeneous with artifi cial solar light, titanium dioxide hydrogen peroxide Compound Parabolic Cylindrical photo-reactor (CPC) bioremediation an isolated native stump; purpose obtaining permissible concentrations national legislation(1 mg/L). Several bacterial species Pseudomonas sp can effectively degrade products. During metabolism, they use nitrogen source glucose carbon transform it ammonia dioxide. Bacterium identified mud coming from industry metallic compounds recovery, thenit adapted solution 15 mg/L. efficiency removal percentage quantified curves biomass growths elaborated time. In process, effects initial agitation on reduction means factorial design experiments analyzed. this determined that most significant variable not outstanding this. kinetic adjusted fi rst order kinetics, following Langmuirian regime growth kinetics model Monod equation. Optimal conditions pH 9.5, temperature 28 oC, inoculum size 1.21 x105 UFC/ml, 200 rpm Tests indicate might be competitive other chemical process. Using both together (photocatalytic biotechnology) 99.86% achieved; results using two could used remove organic pollutants