Andersen, Henrik Rasmus

Hwang, Yuhoon

Jakobsen, Mogens Havsteen

Ko, Dongah

Lee, Joosung

Yavuz, Cafer T.

Online Research Database In Technology

                       General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.  • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal   If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.     Downloaded from orbit.dtu.dk on: Dec 18, 2017Selective heavy metal capture from contaminated waterKo, Dongah; Lee, Joosung; Jakobsen, Mogens Havsteen; Hwang, Yuhoon; Yavuz, Cafer T.; Andersen,Henrik RasmusPublication date:2016Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Ko, D., Lee, J., Jakobsen, M. H., Hwang, Y., Yavuz, C. T., & Andersen, H. R. (2016). Selective heavy metalcapture from contaminated water. Poster session presented at 9th Europe-Korea Conference on Science andTechnology (EKC2016), Berlin, Germany.Vs. Selective heavy metal capture from contaminated water  with covalent organic polymer Dongah Ko1, Joosung Lee2, Mogens H. Jakobsen3, Yuhoon Hwang4, Cafer T. Yavuz2, Henrik R. Andersen1  doko@env.dtu.dk Cd2+ + S2-  CdS  Facilitate disulfide functionalized polymers by simple reaction & mild condition.  Sulfide group gives strong affinity towards heavy metal ions. Storm water runoff treatment in urban area. Less turn over rate of column.  Achieved 99.9% removal of Cd ions. Selectively capturing heavy metal ions in the presence of other cations. Application 1. Heavy metal contamination 3. Experimental methods 4. Result and Discussion 4. Conclusion Among various pollutants, heavy metal ions have been extensively generated for many years even though their toxicity toward human beings and the environment in general are well known.  Point source (Predictable) Non-point source (Irregular and unpredictable) 2. Limitations & Aims of this study Lack of adequate space for infrastructure in urban areas Cost inefficiency  High capacity  Facilitate compact treatment system in a city  High selectivity  Specifically capture heavy metal in a presence of other cations  Fast kinetics  Storm water has short retention time  Robust structure from covalent bonding  Avoid to be swept away Suggesting new sorbent Phase 1: Design and synthesize stable polymer with sulfur functionality Phase 2: Heavy metal sorption test 1 Department of Environmental Engineering, Technical University of Denmark, Miljøevej 113, 2800 Kgs. Lyngby, Denmark (doko@env.dtu.dk)  2 Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea  3 Department of Micro- and Nano technology, Technical University of Denmark, Ørsteds Plads, 345B, 2800 Kgs. Lyngby, Denmark  4 Department of Environmental Engineering, Seoul National University of Science & Technology, 232 Kongnung-ro, Nowon-gu, Seoul 139-743, Republic of Korea Principle: Hard Soft Acid Base theory 1.Pure metal ion test 2.Adding Ca2+ or Mg2+ in metal solution 3.Sorption tests in different pH conditions Sorption kinetics Selectivity VS Commercial activated carbon Disulfide polymer [Pseudo-first order kinetic] [Pseudo-second order kinetic]  Activated carbon sorption kinetic is suitable with pseudo-first order kinetic model (physisorption) and k1 is 0.01 min-1.  Whereas, disulfide polymer correlates to pseudo-second order kinetic model (Chemisorption) and has k2 of 13.5 g mg-1 min-1. Sorption capacity Disulfide polymer Activated carbon Maximum capacity (mg/g) 21.1 11.9 Kd (ml/g) 9.49 x 105 4.28 x 104 Capacity per area (mg/m2) 0.14 0.01  Disulfide polymer has 2 times higher sorption capacity and 10 times higher surface area capacity compare to commercial activated carbon.  Water-solid partition coefficient shows higher than 105, which indicates polymer is an excellent sorbent.   Real wastewater also contains other cations such as Ca(II) and this ions compete with heavy metal ions towards sorption sites of sorbent.   Cu(II), Zn(II), Pb(II), Cd(II) sorption test showed that in the presence of Ca(II), disulfide polymer shows higher selective capture ability than activated carbon. Ni(II) exhibited opposite result, compared to other metals. Disulfide polymer  Designed porous polymer Performance Metal plating Leather tanning Electronics Mining fields Storm water runoff Limitations of current treatment systems 

Selective heavy metal capture from contaminated water

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Selective heavy metal capture from contaminated water

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