We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Selective Removal of Anionic and Cationic Dyes Using Magnetic Composites
Summary
Researchers synthesized a composite material combining zinc-aluminum layered double hydroxide with magnetic biochar and tested it for removing dyes from water. The composite effectively adsorbed both positively and negatively charged dyes, and its magnetic properties allowed easy recovery from solution. The study demonstrates that this type of composite adsorbent could be a practical, reusable tool for treating dye-contaminated wastewater.
Water is one of the most basic human needs, and dyes are one of the sources of water pollution. Since adsorption has proven to be effective in removing contaminants, it is the most widely used technique. In this adsorption, a LDH Zn-Al /magnetic biochar composite was used for dye removal. Zn-Al LDH, magnetic biochar, and LDH Zn-Al/biochar magnetic composite were successfully synthesized, based on XRD and FTIR studies. XRD analysis of the Zn-Al LDH material shows diffractions of (003), (006), (101), (012), (015), (107), and (110) around the 2theta angle at 10.29°, 20.07°, 29.59°, 32.12°, 34.02°, 48.06°, and 60.16° which are characteristic of LDH materials. In magnetic biochar and LDH Zn-Al/magnet biochar composites diffraction (220), (311), (422) and (440) at 2theta around 24.9°, 35°, 63° and 68.4° in these materials indicate the characteristics of carbon-based materials from biochar. FTIR analysis showed the appearance of a vibration peak at 1404cm−1 indicating the presence of C H groups contained in biochar. The characteristic double-layer hydroxy (M-O) vibrations below 1000 cm−1 also indicated that the composite preparation process had been successful. The study’s results show that cationic dyes are more easily adsorbed than anionic dyes. Specifically, the LDH Zn-Al/Magnetic Biochar composite more extensively absorbs the cationic dye malachite green.
Sign in to start a discussion.
More Papers Like This
Synthesis and characterization of a novel ternary magnetic composite for the enhanced adsorption capacity to remove organic dyes
A novel composite material (Fe3O4/NC/MOF) combining iron oxide nanoparticles, nanocellulose, and a zinc-based metal-organic framework was synthesized using simple mechanical agitation for adsorbing organic dyes from water. The composite effectively removed four dye types (Congo red, Basic Blue 54, Basic Violet 14, Acid Red 88) with performance evaluated across pH, temperature, and contact time variables.
Functionalization of Shorea faguetiana biochar using Fe2O3 nanoparticles and MXene for rapid removal of methyl blue and lead from both single and binary systems
Researchers created a magnetic composite by combining biochar from Shorea faguetiana wood with iron oxide nanoparticles and MXene for wastewater treatment. The material demonstrated exceptionally high adsorption capacity for both lead ions and methyl blue dye, with no competition between the two pollutants in mixed solutions. The study highlights how functionalized biochar composites can provide rapid, efficient, and sustainable remediation for multiple types of water contaminants simultaneously.
Efficient Removal of Micro-Sized Degradable PHBV Microplastics from Wastewater by a Functionalized Magnetic Nano Iron Oxides-Biochar Composite: Performance, Mechanisms, and Material Regeneration
Researchers developed a magnetic iron oxide-biochar composite capable of removing biodegradable PHBV microplastics from wastewater with over 98% efficiency. The material worked through a combination of surface adsorption and magnetic separation, maintained performance across a wide pH range, and retained over 92% removal efficiency after four regeneration cycles.
Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green
Researchers synthesized magnetite/humic acid composites (Fe3O4/HA) and tested their ability to remove malachite green dye from water, finding effective adsorption following pseudo-second-order kinetics. The magnetic material offers an environmentally friendly approach to removing dye pollutants from water.
A novel polymer coated magnetic activated biochar-zeolite composite for adsorption of polystyrene microplastics: Synthesis, characterization, adsorption and regeneration performance
Researchers developed a new magnetic composite material made from biochar, zeolite, and polymer coatings that can effectively capture microplastics from water. The material removed over 90 percent of test microplastics and could be regenerated and reused multiple times. The study presents a promising, practical approach for filtering microplastics out of contaminated water using materials that can be magnetically recovered.