Various Adsorbents for Removal of Rhodamine B Dye: A Review

Abstract

Lately, there has been an increase in dye manufacturing, resulting in increased environmental pollution. Recent studies show a wide availability of usage adsorbents, including banana peels, potatoes, algae, etc. Food and Drug Administration prohibited the use of Rhodamine B (RhB) for its toxicity and harmful effects. Therefore, this study presents a wide range of non-conventional low-cost alternative adsorbents to remove RhB dye from wastewater. It has been observed that the mechanism of the dye adsorption is focused on kinetics, isotherm, and thermodynamics models, which depend on the chemical nature of the materials and various physicochemical experimental conditions such as solution pH, initial dye concentration, adsorbent dosage, and temperature of the system. The kinetic data of adsorption of RhB dye usually follow the pseudo-first-order and pseudo-second-order kinetic models. Several studies revealed that Langmuir and Freundlich adsorption isotherm models are frequently used to evaluate the adsorption capacity of the adsorbents. Furthermore, thermodynamic examination showed that RhB adsorption was endothermic and unconstrained in nature. Thus, both photocatalytic degradation and adsorption methods offer good potential to remove RhB dye from industrial effluents. The work is in progress to evaluate the possibility of using other modified waste biomass for industrial pollution control.

Shaddock peel-loaded CeO2 composites with peroxidase-like activity for dye degradation and trace detection of ascorbic acid

“…36–38 Recently, a number of studies including biological, chemical and physical methods on the removal of organic dye pollutants have been widely carried out. 36,39 MV, a triphenylmethane dye, can be used as a medicine for external use after dilution because of its antimicrobial, antifungal and antiparasitic properties. On the other hand, MV is widely used in textile production or in paper factories.…”

Integrating rod‐shaped nickel molybdate@polypyrrole matrix for sustainable adsorptive removal of organic dye: Kinetics, isotherm, and thermodynamics study

“…The aquatic ecosystem is thus severely affected by dye wastewater released from industries 2 . Dyes such as methylene blue (MB) dye, malachite green (MG), and rhodamine B (Rh B) were chosen for this study as they are extensively used in the manufacturing of food coloring agents as well as in cotton, wool, silk, and leather dyeing 3–5 …”

“…2 Dyes such as methylene blue (MB) dye, malachite green (MG), and rhodamine B (Rh B) were chosen for this study as they are extensively used in the manufacturing of food coloring agents as well as in cotton, wool, silk, and leather dyeing. [3][4][5] While there are several biological, physical, and chemical methods for the removal of dyes from water, the quest for better and more effective methods is an ongoing challenge. Adsorption, or the physical method, is one of the most efficient methods for sustainable dye removal.…”

Synthesis and Characterization Bimetallic Organic Framework CoxFex(BDC) and Adsorption Cationic and Anionic Dyes

“…Similarly, with the nature of a cationic dye and complex structure, the presence of RhB in wastewater from the dyeing, textile, and paint industries is considered a tremendous challenge for treatment. RhB has been found as a source of skin diseases, cancer, and alteration to kidneys and liver function when an excess of dye is released into the aquatic environment [20].…”