Abstract:
A toxicity evaluation device and method are provided to evaluate toxicity of sewage, waste water and chemical substances by measuring the amount of oxygen produced by photosynthesis of algae, and reduce the costs for evaluation. The toxicity evaluation device comprises: an algae storage tank(11) for mixing and incubating the cultured algae and toxic materials, and supplying nitrogen into the mixture to maintain dissolved oxygen below a certain amount; a reactor(1) for receiving the mixture from the algae storage tank and generating oxygen from the mixture by supplying a light; a constant temperature circulator(13) for supplying water of constant temperature to the reactor; and a magnetic bar stirrer(18) for stirring the reactor with a magnetic bar(2), wherein the reactor contains an illuminator(12) for supplying the light to the mixture, and a photodetector(10) installed opposite to the illuminator for detecting the light from the illuminator. The dissolved oxygen of the algae storage tank is maintained below 1.5 ppm.
Abstract:
An effective method is provided to improve adsorption performance of the dyes through the chemical modification of functional groups on a surface of the biomass according to the adsorption mechanism of the biomass and dyes when using a corynebacterium glutamicum biomass as biosorbents. In a preparation method of a biosorbent that is applied to dyestuff wastewater and removes the dyes by adsorbing dyes causing color, a preparation method of a biosorbent having enhanced adsorption performance by chemical modification of functional groups on a surface of a corynebacterium glutamicum biomass comprises the steps of: treating the corynebacterium glutamicum biomass with an acid to hydrogenate the corynebacterium glutamicum biomass, washing the hydrogenated corynebacterium glutamicum biomass with distilled water, and drying the washed corynebacterium glutamicum biomass; and chemically modifying the hydrogenated biomass through an ester reaction to remove a carboxyl group, washing the chemically modified hydrogenated biomass with distilled water, and drying the washed biomass. The step of removing the carboxyl group is performed by dispersing the hydrogenated biomass into a methanol solution, adding nitric acid as an acid catalyst into the dispersion, and agitating the mixed solution to perform an ester reaction.
Abstract:
본발명은바인더인섬유에바이오매스가담지된섬유-바이오매스복합체와여기에작용기를가진고분자가코팅된이중층구조의흡착제및 이의제조방법에관한것이다. 본발명에의한흡착제는섬유를흡착제바인더로사용하여산, 염기에대한화학적안정성이높으며, 높은기계적물성을제공하고제조및 공정적용에용이하다. 또한, 본발명의흡착제는섬유에코팅된고분자의작용기를이용하여흡착성능을개선할수 있다.
Abstract:
A surface-modified biomass and a manufacturing method thereof are provided to offer remarkable performance to remove anionic contaminants. A surface-modified bacteria biomass includes an amine radical contained cationic polymer cross-linked in a surface of bacteria biomass. The amine radical contained cationic polymer is cross-linked in the surface of the bacteria biomass with an amine group or a hydroxyl group. The amine radical contained cationic polymer is selected from a group consisting of polymers, a copolymer, a linear polymer polydi allyl dimethyl ammonium chloride, polyethanol amine/methyl chloride, and reformed polyethyleneimine.
Abstract:
본발명은간단한제조공정으로빠른흡착속도및 내산성을갖는고분자복합섬유제조방법및 이의의한고분자복합섬유에관한것이다. 본발명은이온교환수지와같이단량체들을공중합하는제조공정이없이도흡착성능이우수한고분자복합섬유및 이를포함하는흡착제를제공할수 있다. 또한, 본발명의섬유형흡착제는내산성등 높은내구성과빠른흡착속도를가지면서도제조방법이간단하다.
Abstract:
본발명은지질을탄소나노튜브에결합시킨후 지질의환원력을이용해금속나노입자를탄소나노튜브에고정화는탄소나노튜브의제조방법에관한것이다. 본발명에의한방법은탄소나노튜브에결합된지질의환원력을이용하여금속을탄소나노튜브표면에서환원시켜나노입자형태로고정시킬수 있다. 본발명은탄소나노튜브에결합되는지질을통해금속나노입자의생성이나크기도제어할수 있다. 본발명의방법은자연계에널리존재하는지질을이용하므로친환경적으로금속나노입자를탄소나노튜브에고정시킬수 있다.
Abstract:
The present invention relates to a fiber-biomass composite, wherein biomass is submerged in a binder fabric, a double-layered absorbent coated with a polymer having functional groups, and a method for manufacturing the same. The absorbent, according to the present invention, uses a fabric as an absorbent binder, and, therefore, is chemically stable against acids and bases. The absorbent is also provided with excellent mechanical properties, and can be readily applied to manufacture and process. In addition, the absorbent of the present invention can be improved with the absorption performance by using the functional groups of a polymer coated on the fabric.
Abstract:
본 발명에 의한 양이온성 오염물질 제거용 생체흡착제는 발효폐기물인 코리네박테리움 글루타미쿰 바이오매스의 표면에 추가로 결합된 카르복실기, 술폰산기 및 인산기 중 하나 이상을 가지는 화합물을 포함하여 바이오매스의 흡착능력이 증대된 양이온성 오염물질 제거용 생체흡착제이다. 본 발명에 의한 양이온성 오염물질 제거용 생체흡착제는 원료 바이오 매스에 비해 염기성 염료를 효과적으로 제거할 수 있고, 또한 흡착성능 및 친화도가 매우 증가하였다. 코리네박테리움 글루타미쿰, 바이오매스, 양이온성 오염물질, 생체흡착제
Abstract:
본 발명에 의한 양이온성 오염물질 제거용 생체흡착제는 발효폐기물인 코리네박테리움 글루타미쿰 바이오매스에 존재하는 아미노기의 수소가 알킬기, 사이클로알킬기 및 아릴기 중 하나 이상으로 치환된 생체흡착제이다. 본 발명에 의한 양이온성 오염물질 제거용 생체흡착제는 원료 바이오 매스에 비해 넓은 pH범위에서 염기성 염료를 효과적으로 제거할 수 있고, 또한 흡착성능 및 친화도가 매우 증가하였다. 코리네박테리움 글루타미쿰, 바이오매스, 양이온성 오염물질, 생체흡착제