TY - JOUR AU - Dao Trung AU - Tram Nguyen PY - 2020/12/13 Y2 - 2024/03/29 TI - Researching carbon varieties from season-caused shell for use of H2O2 properties to treat lead JF - Science & Technology Development Journal: Science of the Earth & Environment JA - STDJSEE VL - 4 IS - 2 SE - Original Research DO - https://doi.org/10.32508/stdjsee.v4i2.540 UR - http://stdjsee.scienceandtechnology.com.vn/index.php/stdjsee/article/view/540 AB - The study assumes lead wastewater treatment with initial concentration fixed at 30 ppm and research material, denatured coal prepared from macadamia seed shell activated by heating, and finally variable Coal calculation with H2O2 agent. The coal was modified by soaking coal in 25% H2O2 solution for 48 hours. Coal after denatured for adsorption results reached 266.26 mg/g, the research results show similarities with some previous studies. On the other hand, when analyzing the infrared spectrum of coal, the FT-IR spectroscopic results showed that after denatured coal, there were some functional groups such as OH-, C-O, C=O, C-N, functional groups capable of participating in the adsorption of heavy metals in wastewater. When observing the SEM image, the photo results of the material show that the surface of the material is rough, with many pores and different sizes evenly distributed on the surface. From SEM image results and FT-IR spectroscopy results show that the material has the ability to adsorb heavy metals by many physical and chemical mechanisms. Indeed, when researching the application of materials to the treatment of lead heavy metals in presumptive wastewater, the research results show that lead treatment efficiency reaches 94.05% when surveyed at the same optimal conditions at pH = 6 with dose of 0.4 g/L and duration of 60 minutes. The control shows that the study results are similar to some previous research results, from which it can be confirmed that the modified coal material is capable of Pb (II) treatment in wastewater. ER -