Additive manufacturing (AM) technology enables to manufacture many types of porous aluminum alloys. Present study focusses on AM porous Al4.8Mg0.7Sc alloys manufactured through laser powder bed fusion process. Eight types of ordered cell structures are designed by 3D-Voronoi division. AM porous Al4.8Mg0.7Sc alloys consisting of ordered cells show anisotropic compression behavior. Oscillated stressstrain curves are due to the heterogeneous deformation of cell struts. Post-annealed AM porous Al4.8Mg0.7Sc alloy shows excellent mechanical properties compared to post-annealed AM porous Al10Si0.3Mg alloy. This is because of solid solution hardening in Al4.8Mg 0.7Sc alloy.

The adsorption method for heavy metal removal from wastewater is focused because of its simplicity and high versatility, and sulfur-impregnated carbonaceous adsorbent is expected as heavy metal adsorbent with high performance at low cost. In this study, sulfur-impregnated carbonaceous filter for removing heavy metals were prepared by pyrolysis of cotton immersed in sulfur solution, K 2 S, Na 2 S and NaHS, and the adsorption behavior of nickel was investigated. A nickel adsorption experiment was carried out using a syringe. The sulfur-immersed carbonaceous filter was prepared from cotton via pyrolysis at 400 °C for 1 h after immersing to sulfur solution for 12 h. In the experiment, a syringe which filled with 1 g of the obtained filter and glass wool was used, and a nickel solution was passed through the syringe. The filter with nickel adsorption can be prepared using all sulfur solutions, especially the product prepared by using Na 2 S has higher adsorption ability than the products using K 2 S and NaHS. The product obtained using over 0.4 M K 2 S solution was effective for nickel adsorption. The equilibrium data of nickel adsorption on the product using 1 M K 2 S was found to Langmuir isotherm model better than Freundlich, and the calculated maximum adsorption capacity is 0.215 mmol/g.