University-Industry Cooperation Group of Kyung Hee University

Samsung General Chemicals, Co., Ltd.

Eun Yeol Lee

Hye Jin Kim

Young Chan Jeon

Myeong Yun Chae

Duc Anh Nguyen

Eu Gene Oh

Kyung Hwa Kim

Thi Ngoc Diep Nguyen

Ok Kyung Lee

So Hyeon Oh

Thi Thu Nguyen

In Yeub Hwang

Hyun Gyu Park

The present invention relates to a method for producing various metabolites from a gas-phase alkane compound using asp. DH-1 strain, deposited under Accession Number KCTC18400P, or a transformant thereof. The method provided in the present invention enables more effective production of various metabolites from a gaseous alkane compound compared to the conventional method using methanotrophic bacteria, and thus, the method of the present invention can be widely used for production of a target material using a bioreactor.

Use ofsp. DH-1 strain and its transformants

An alginate gel adsorbent to remove heavy metal ions according to the present invention is prepared by adding dropwisely 0.1-5 wt % alginate solution to a polyvalent cationic solution thereby cross-linking alginic acid with polyvalent cations. An alginate gel adsorbent containing activated carbon capable of simultaneously removing heavy metal ions and organotoxic materials, that is, activated carbon/alginate gel adsorbent, is prepared by adding dropwisely a mixed solution of 0.17-10 wt % of alginate and 0.1-10 wt % of activated carbon powder to a polyvalent cationic solution thereby cross-linking alginic acid with polyvalent cations in order to immobilize polyvalent cation to alginic acid containing activated carbon. The polyvalent cationic solution is selected from the group consisting of calcium chloride (CaCl), strontium chloride (SrCl), barium chloride (BaCl) and aluminium chloride (AlCl). A flat board or a thin membrane coated alginate gel adsorbent can be prepared by coating alginate gels onto a supporter such as paper, wood plate and textile fabrics. The alginate gel adsorbent for water purification can be applied to a water purifier as well as a process of wastewater treatment. The alginate gel coated onto a supporter is prepared by immersing a supporter in 0.05-5 wt % alginate solution so that the supporter may uniformly adsorb the alginate solution, immersing the supporter in a polyvalent cationic solution thereby forming alginate gel on the surface of the supporter, and drying the supporter formed with alginate gel thereon.

Alginate gel based adsorbents for heavy metal removal

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Seoul, South Korea

Eun Yeol Lee