A short review on dyes removal from water and wastewaters

Magnetically recyclable adsorption of anionic pollutants from wastewater using 3,5-diaminobenzoic acid-functionalized magnetic iron oxide nanoparticles

“…For each successive adsorption-desorption cycle, the aforementioned protocol was followed under identical conditions. The amount of dye adsorbed (q e ) by the Fe 3 O 4 @DABA nanoparticle was calculated using eqn (1):…”

“…With the rapid progress in industrialization, the discharge of effluents into the environment has tremendously increased worldwide in the last several decades. [1][2][3][4][5][6] Various types of chemicals are used in industries to enhance the stability, lifetime, performance and even aesthetic beauty of the finished products. In particular, azo dyes are widely used in plastic, printing, paper, rubber, cosmetic, leather, textile, pharmaceutical and food industries due to their unusual binding capabilities, versatile water solubility and ease of introduction of attractive colors to the finished goods.…”

Magnetized CNTs incorporated MBA cross‐linked guar gum nano‐composite for methylene blue dye removal

“…7 Most of the processes of wastewater purification cause adverse effects such as secondary pollution due to the accumulation of high sludge and residual metal ions in the treated water system. 8,9 The cobalt and nickel photocatalysts have been investigated for excellent oxidative degradation of dyes from wastewater at room temperature. 10 Polymer and carbon matrix composites have shown excellent photocatalytic properties on dyes and selective metal ion adsorbents.…”

“…Adsorption, flocculation, precipitation, coagulation, photocatalysis, electrodialysis, reverse osmosis, and ion exchange chromatography are some of the adopted methods 7 . Most of the processes of wastewater purification cause adverse effects such as secondary pollution due to the accumulation of high sludge and residual metal ions in the treated water system 8,9 . The cobalt and nickel photocatalysts have been investigated for excellent oxidative degradation of dyes from wastewater at room temperature 10 .…”