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Korea Iron & Steel Association      Chapter 5●The world of steel: how does it benefit the environment?


                                                     Silicic acid is an essential                                                                                Hanna,
                                                                                                                                 Artificial reef  Artificial reef
                                                   element for the growth of rice.                                                                          have you heard of
                                                      5~10% of the weight of                                                                              ocean desertification?
                                                        rice is silicic acid.




                Rice nourished by iron
                    is more tasty
                                                    Silicic acid
                                                    Silicic acid
                                                     layer
                                                     layer
                                    This rice was
                                                      Epidermal
                                                      Epidermal
                                  fertilized by silicic   cells of rice
                                                      cells of rice
                                    acid sourced                                                                                                                                         Nope
                                     from slag.
                                                        Indeed, silicic acid
                       This is why rice stems treated with   treated rice tastes
                       silicic acid are stronger, better able   great!
                       to withstand high winds and to fend
                            off pests and diseases.                                                                             (Disappeared)
                                                                                                                                (Disappeared)
                                                                                                                                                                                             (Disappeared)
                                                                                                                                                                                             (Disappeared)
                                             Iron-fed rice.
                                             It has to be
                                              different!
                                                                                                                        When the sea bottom turns into wasteland, much
                                                                                                                            like the desert on land, it is called ocean
                                                                                                                          desertification. When this happens, algae with   (Disappeared)
                                                                                                                                                                          (Disappeared)
                                                                                                                         cement-color lime content covers the bedrock of
                                                                                                                                          the sea.


                                                                                                                                                              To prevent ocean desertification, an artificial reef has
                  All siliceous fertilizers
                produced in Korea use slag                                                                                                                    been built from slag. The slag is rich in minerals, such as
                 generated by steel mills.                       Really?                                                                                      calcium and iron that can nourish marine ecosystems.
                                                              All of them?


                                                                                                                                                               Artificial reef
                                                                                                                                                               Artificial reef











                                                                                                                                              When coastal marine plants give way to white lime that invade the ocean bedrock, ocean
            Tidbit           In fact, silicon (Si) is a component found in large amounts in natural soil; however, it is difficult to   Tidbit  'acidification' has begun. About 60% of the East Sea of Korea and 30% of the coasts of Jeju Island
                             isolate. That is why we must replenish our crop by applying fertilizer.
                                                                                                                                              and the southern coasts are impacted, demanding urgent action.

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