The amorphous adsorbent based on oxides of iron, efficiently removes hazardous substances such as arsenic or selenium from the contaminated soil and surface or underground water. It is also highly effective for removing polycyclic aromatic hydrocarbons (PAHs), which are major air pollutants in abundance at the fine particulate range (PM2.5). In comparison to existing methods such as coprecipitation, ion exchange method, and reverse osmosis membrane, the proposed adsorbent process has more advantages such as higher removal forces, no sludge production, and it is also removes hazardous arsenic, selenium and PAHs which are allergens.
The high performance adsorbent consists of iron based minerals called ferrihydrite with wide surface area and a strong affinity for a wide variety of contaminants. The adsorbent can be easily synthesized at room temperature from iron salt and sodium hydroxide at low cost and the particle size is also tunable.
This technology is widely applicable to the industries such as;
Benefits of this invention are not only limited to: Easy to synthesise material at room temperature and low cost Particle size is tunable depending on application Environment can be cleaned effectively for better quality of life Allergies related to pollutants may be relieved Safe food can be produced on remediated soil