Removal of methylene blue dye from artificially contaminated water using citrus limetta peel waste as a very low cost adsorbent

The textile industry, very important for the world economy, generates an effluent containing dyes, and which, when discarded in water bodies without proper treatment, can cause impacts to human health and the environment. One of these widely used dyes is methylene blue, whose characteristics are high solubility in water and its toxic potential, and which effects range from eye irritations, nausea, vomiting and even mental confusion. Among the potential adsorbents of this dye is chitin, which is a biopolymer extracted from the shrimp exoskeleton. Aiming at the development of a low-cost adsorbent material with potential use in the textile effluent treatment industry, the ability to remove methylene blue dye by shrimp residue chitin, obtained by eleven different methodologies, was verified. The three most efficient treatments reached approximately 75% of dye removal, proving the high adsorption power of shrimp residue. In addition to providing technological development of materials, the research brings socioeconomic benefits to the fishermen’s colony with the use of shrimp residue for the adsorption of other waste from the textile industry, contributing to the sustainability of both activities and reducing the environmental impact.

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Study on methylene blue dye adsorption in aqueous solution by heat-treated Gnetum gnemon shell waste particles as low-cost adsorbent

10.1063/5.0001358 ◽

2020 ◽

Author(s):

Lelifajri ◽

Rahmi ◽

Supriatno ◽

Susilawati ◽

A. S. M. Indarum

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Low Cost ◽

Dye Adsorption ◽

Blue Dye ◽

Methylene Blue Dye ◽

Heat Treated ◽

Shell Waste ◽

Gnetum Gnemon ◽

Waste Particles

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Utilization of Jackfruit Peel as a Low-Cost adsorbent for the Removal of Methylene Blue Dye from Synthetically Polluted Water

Current Analytical Chemistry ◽

10.2174/1573411016666200203153318 ◽

2020 ◽

Vol 16 ◽

Author(s):

Mohsina Ahmed ◽

Abu Nasar

Keyword(s):

Methylene Blue ◽

Low Cost ◽

Aqueous Media ◽

Polluted Water ◽

Blue Dye ◽

Batch Adsorption ◽

Contaminated Water ◽

Abrupt Increase ◽

Agriculture Waste ◽

Pseudo Second Order

Background: Due to an abrupt increase in the contamination of freshwater systems by dye-containing wastewater, there is an urgent need to find robust and greener adsorbents for the elimination of dyes from the contaminated water. As the dyes not only change the appearance of water but are also a cause of many serious problems, which can be some time mutagenic and carcinogenic. Methods: This research paper is based on the use of adsorbent made from the peel of jackfruit (POJ). The adsorbent derived from agriculture waste was low cost and efficient for the elimination of methylene blue (MB) dye from aqueous media. Batch adsorption experiments were accompanied by varying the pH of the solution, contact time, POJ dosage, and initial MB concentration. Results: It was seen that adsorption of MB onto Jackfruit peel adsorbent follows pseudo-second-order (PSO) kinetics and Langmuir isotherm with maximum biosorption capacity (qm) of 232.55 mg/g. The thermodynamic study revealed that the adsorption was spontaneous, endothermic, and associated with the rise in entropy. Conclusion: In view of the low-cost and promising adsorption efficiency, the present investigation submits that that POJ is novel and economically feasible adsorbent for the removal of MB from aqueous solutions.

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