Degradation of cationic and anionic dyes in coagulation–flocculation process using bi-functionalized silica hybrid with aluminum-ferric as auxiliary agent

Abstract

Cationic dye (methylene blue) and anionic dye (methyl orange) degradation in the coagulation process was demonstrated.

Electrospun Mesoporous Composite CuO−Co3O4/N‐ TiO2 Nanofibers as Efficient Visible Light Photocatalysts

“…In pure MB+MO, the signature peaks of both MB and MO are seen in blue and orange color, respectively. The blue color peaks 2816, 2720, 1363 and 1170 cm −1 are assigned to the stretching vibration of ‐CH‐ aromatic ring, –CH 3 methyl groups, aromatic ring structures and C=C skeleton aromatic ring structures in methylene blue, respectively . The MO signature peaks (orange color) 1421, 1194 and1122 cm −1 are assigned to the N=N vibration, C−N vibration and S=O vibration, respectively.…”

TiO2/rGO/CuS Nanocomposites for Efficient Photocatalytic Degradation of Rhodamine‐B Dye

“…The textile industries produce maximum amount of dye effluent, that is more than ten thousand tonnes of dyes per year and discharge approximately hundred tonnes per year into water streams as effluent . There are several methods developed to purify the contaminated water namely, filtration, coagulation, ion exchange, adsorption, biodegradation, chemical oxidation and photocatalysis . Among these approaches the photocatalysis is simple, cost effective and further solar energy can be harvested to degrade effluents in large scale, hence it is the most effective solution to environmental pollution and the energy crisis …”

Positively charged nanofiltration membranes via economically mussel-substance-simulated co-deposition for textile wastewater treatment

“…These wastewaters are among the most aggressive pollutions of all the industrial sectors and can cause permanent damage to the aquatic ecosystems if discharged untreated. Techniques such as adsorption [2], coagulation [3], advanced oxidation [4] and biodegradation [5] have been developed for the treatment of wastewater. However, adsorption and coagulation usually generate intractable sludge, and oxidation and biodegradation are invalid to the heavy metal ion and inorganic salt removals.…”