The final goal of this research is to promote civic participation on resolving the water issue. For this, the research was fragmented into following three steps: 1. civil recognition and promotion to participate on water problems by AqUs, an educational game app, 2. Spreading the sustainable-self development system through GitHub and Facebook promotion, 3. propagating the movement to a global scale.
Heavy metal pollution from wastewater poses a significant health risk. Conventional methods of heavy metal removal from wastewater use a coagulant to attract metal ions into sludge. The treatment is long, costly and results in large water loss, and is harmful to the environment. In this study, a novel metal filtration system for wastewater using alginate, an algae-derived polysaccharide which forms a hydrogel with metal ions and traps them in place, is introduced. Using the motion of electrophoresis, the metal cations are moved through a compartmentalized alginate liquid filter and is separated based on their affinity toward alginate, making recycling more viable. The practicality of this method is that the resulting material is more eco-friendly and less water and metal are disposed.
This study is focused on developing a water capsule to tackle drought, decreasing the water wasted from agriculture. By burying small capsules that steadily eject water near the roots, the immense amount of water that evaporates after being sprayed on crops can be saved. This study first discusses the method of fabricating sphere-shaped alginate capsules, involving ice balls. Alginate is a polymer that can form membranes by cross-linking with divalent cations. Then it determines the ideal composition and concentration of the alginate membrane using Young’s modulus comparisons to measure the stiffness. Experiments were conducted to measure the discharged water over time for each type of capsule.