Thutug Rahardiant Primadi, Fauziatul Fajaroh, Syaiful Bahri, Nazriati, Aman Santoso, Endang Ciptawati, Adrian Nur
Two facts, namely the industrial development in various fields and limited natural dyes, have led to an increase of synthetic dyes uses which have the potential to produce hazardous wastes if not managed properly. Some efforts to process liquid waste, especially synthetic dye waste can be done in many ways. A simple but supposedly effective way is to utilize magnetic nanoscale adsorbent material as a waste processing agent. The purpose of this study was to synthesize salicylic acid-modified magnetite nanoparticles and apply them as a liquid waste processor, especially Malachite Green waste. Malachite Green is a dye that is often used in the industry. The magnetic properties possessed by magnetite material are beneficial in material recovery. The main stages of the study include the synthesis of magnetite nanoparticles by electro-oxidation of iron in water; modification of material with salicylic acid; characterization of synthesized materials with XRD, FTIR, SEM, and BET; and Malachite Green waste treatment process by salicylic acid-modified magnetite. The results of XRD, FTIR, and SEM characterization showed that the salicylic acid-modified magnetite nanoparticles were successfully synthesized. The results of BET characterization provide a particle surface area of 88 m2/g which shows the potential of the material as an adsorbent. The application of the material as an adsorbent successfully absorbed 88% Malachite Green with an adsorption capacity of 15.5 mg/g at room temperature in 120 minutes. © 2020 Author(s).
Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Department of Chemical Engineering, Universitas Sebelas Maret, Indonesia
