A Qualitative Pedagogical Content Analysis Study: Green Chemistry on the Ores Leaching Processes Using Organic Acids
Deane Nurul Amalia (a), Asep Supriatna (a), Ahmad Mudzakir(a*)

a) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*mudzakir.kimia[at]upi.edu

Abstract

Ores leaching projects aimed to recover toxic and valuable metals from industrial process residues. Organic acid like acetic acid and methanesulfonic acid are compounds that were chosen as leaching agent because it has high selectivity on low concentrations of metals and has low toxicity. This study aims to obtain scientists^ conceptions of ores leaching using organic acids presented in concept maps and Teaching Learning Sequence (TLS). The method used in this study is qualitative content analysis consisting of literature collection, descriptive analysis, category selection, and material evaluation from textbooks, review articles, and research articles. The result of this study are in the form of a concept map and TLS illustrate 5 sequences of learning materials consisting of 1) mineral products in Indonesia, 2) valorization of industrial process residue with green chemistry-oriented, 3) industrial process residue treatment steps, 4) organic acid properties, and 5) examples of ores leaching process. The leaching process of ores using organic acids in learning is contextual learning that integrates the concepts of acids and bases, redox reactions, and the principles of solubility learned by high school students. This process also applies the principles of green chemistry preventing waste in the process and using safe solvents. The results of the concept map and Teaching Learning Sequence (TLS) show the application of green chemistry in learning which is expected to be used as a design for teaching materials and didactic designs that can support education for sustainable development.

Keywords: Ores leaching, organic acids, green chemistry, Teaching Learning Sequence (TLS), didactical design.

Topic: ESD in Science Education