Development of adsorption-biodegradation hybrid process for removal of methylene blue from wastewater

Enhancing the removal efficiency of methylene blue in water by fly ash via a modified adsorbent with alkaline thermal hydrolysis treatment

“…However, only approximately 70-85% of the utilized dyes could convert to products, and the le amount followed the wastewater stream of the factories. 32,33 Many evidences described the issues related to dyes exposure, such as cancer, eye injury, skin damage, and other organs destruction. 34,35 In addition, the discharge of uncompleted treatment of textile wastewater to the environment could negatively affect the water quality and aquatic organisms.…”

“…It has been conrmed that MB poisoning symptoms include vomiting, hypertension, anemia, mental and skin damage. 32,33 Therefore, MB has been usually chosen by scientists to be the target pollutant in developing new technologies for the treatment of colorants. Among the typical technologies for the treatment of MB, adsorption has been considered as the most feasible process because of such advantages as high efficiency, low cost, and simple operation.…”

“…Among the typical technologies for the treatment of MB, adsorption has been considered as the most feasible process because of such advantages as high efficiency, low cost, and simple operation. 41 Till now, many feasible adsorbents have been suggested to remove MB in aqueous solution, including pozzolana, 34 activated charcoal, 33,44,45 silica composite, 41 and y ash. 29,32 In recent years, there have been several researchers applied FA or its modication in the removal of MB.…”

Preparation of hyper-cross-linked hydroxylated polystyrene for adsorptive removal of methylene blue

“…Therefore, MB needs to be removed from waste water before discharge. Many methods, including membrane ltration, [1][2][3] bio-degradation, [4][5][6] electro-catalytic or photo-catalytic degradation, [7][8][9][10][11] and liquid-liquid extraction, 12 are applied to remove MB from water, but the high operation cost of these methods limits their application in practice, especially at a large scale. Adsorptive separation is a competitive technology for removal of dyes from waste water, and several adsorbents such as mesoporous silica, 13 clay, 14,15 modied graphene, 11,16 biomass 17,18 and activated carbon [19][20][21] have been reported to remove MB from water.…”

The Biotransformation and Biodecolorization of Methylene Blue by Xenobiotic Bacterium <i>Ralstonia pickettii</i>

“…In addition, approximately 280,000 tons of dye wastes are discharged into the environment, especially water bodies, without any treatment [3][4]. These direct exposures negatively affect the ecosystem following the interference with sunlight penetration, lowered dissolved oxygen concentration, and disrupted photosynthetic processes for some aquatic organisms [5]. Moreover, other hazardous effects are observed with biomagnification, carcinogenicity, and mutagenicity towards the environment and human health [6][7].…”