| Penulis/Author |
Nurbaiti (1); Ir. Muhammad Kusumawan Herliansyah, S.T., M.T.,Ph.D., IPU., ASEAN Eng. (2) ; Prof. Ir. Alva Edy Tontowi, M.Sc., Ph.D., IPU., ASEAN Eng. (3); Maria G. Widiastuti (4); Hendri Van Hoten (5) |
| Abstrak/Abstract |
Indonesia is an archipelagic country with two continents and an ocean, where it produces abundant
marine products and the second largest marine source in the world, such as cuttlefish. Besides, it was for
food, cuttlefish also produced shells as waste. Actually, this waste has been used for animal feed but in
small scale. Others are still waste and cause pollution if not handled properly. Cuttlefish shell waste
(CSW) is the basic ingredient for making hydroxyapatite (HA), while it was the main bone compound.
Meanwhile, HA demand in the market is very high due to bone defects. The novelty of the research was
to fulfil the increasing need for HA at low price and prevent air, water, and soil pollution by using circular
economic principles (reused), and it has economic value. Synthesis HA was used microwave
hydrothermal method. The CSW and coral were obtained from the pet market in Yogyakarta. They were
crushed and calcined to the temperature of 900oC to obtain calcium oxide (CaO). Then, CaO was
synthesized by microwave hydrothermal to obtain HA powder. Synthetic HA was characterized by the
Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM),
energy dispersive X-ray (EDX), and thermogravimetric analysis (TGA). The Ca/P ratio of HA CSW and
coral are 1.7 and 1.87, respectively. Moreover, coral HA has higher crystallinity than CSW (48%). The
TGA shows that the highest weight loss occurred in HA CSW (16.57%). The conclusion is that both
CSW and coral are raw materials used to produce HA |
