Adsorption in combination with ozonation for the treatment of textile waste water: a critical review

Preparation of Graphene Oxide/Chitosan Pellets and Their Adsorption Properties for Congo Red

“…4,5 Many technologies including chemical, 6 physical, 7 and biological approaches 8 have been developed for the removal of dyes from aquatic environment. For example, chemical coagulation/°occulation, 9 different advance oxidation processes, 10 ozonations, 11 and photocatalytic degradation 12,13 have been widely applied to remove dyes from aqueous solutions. Adsorption, 14,15 related with physical and chemical processes, has been proved to be an e®ective dye removal method due to its low cost, simplicity of design, ease of operation, insensitivity to toxic pollutants, and smaller amounts of harmful substances.…”

Low-cost activated carbon for adsorption and heterogeneous ozonation of phenolic wastewater

“…Nervertheless, oxidation processes with ozone can be improved by adding an adsorbent in the process. Several studies have dealt with the interest of catalytic ozonation in presence of zeolite or activated carbon (AC) for the last two decades [9][10][11][12][13][14][15][16][17][18]. This coupling generates the production of non-selective radicals such as hydroxyl radicals which have a higher oxidation potential than molecular ozone.…”

“…This coupling generates the production of non-selective radicals such as hydroxyl radicals which have a higher oxidation potential than molecular ozone. The heterogeneous catalytic ozonation in the presence of activated carbon was reported to be more efficient than molecular ozonation particularly for the treatment of effluents containing compounds with low biodegradability [9,[14][15][16][17]19]. In all these papers, the reaction kinetics was enhanced due to the decomposition of ozone on the surface of the activated carbon into powerful non-selective free radicals: HO • and O 2 -• .…”

“…Many types of wastewaters were efficiently treated by ozonation in presence of AC, with improvements in the mineralization, in the removal of total organic compounds and in the biodegradability of the water: wastewater from the textile industry, water containing humic acids, phtalates, atrazine or dyes [9,15,24,25]. So catalytic ozonation on activated carbon appears a very suitable process for water treatment for a variety of industries.…”

Textiles Wastewater Treatment

“…Huang et al (2017) The authors have compared the chemical-based conventional treatments and the enzyme-based treatment processes. Khamparia and Jaspal (2017) summarized textiles dye removal study using combined ozonation and adsorption methods. The authors have concluded that with the combined ability of ozone and a catalyst/adsorbent, there is high possibility of total elimination of dyes from wastewater.…”