A study on removal of dye, COD, turbidity, and DO enhancement from synthetic textile wastewater by using natural adsorbent in RSM design: isothermal analysis

Upender, H.; Kishore, K. Anand

doi:10.1007/s11696-021-01709-5

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Several approaches have been used to remove methylene blue and other types of dyes from wastewater, including coagulation/flocculation [11], adsorption [5,[12][13][14][15], filtration [16,17], electrochemical oxidation [18], photocatalytic degradation [19], and biodegradation [20,21]. Adsorption is favorable owing to its low cost, abundant availability of adsorbent materials, high efficiency, and ease of operation [22][23][24]. Carbonbased materials, such as activated carbon, carbon nanotubes, and graphene-based derivatives, have been commonly used as adsorbents for dye removal [25].…”

Section: Introductionmentioning

confidence: 99%

Loose and Encased Graphite for Methylene Blue Adsorption: Process Optimization and Principal Component Analysis

Mah,

Azhar,

Wong

et al. 2023

Chem Eng & Technol

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Graphite is often converted to expanded graphite or graphene for water remediation. However, these processes require extra chemicals and energy. This study tested loose and encased pristine graphite powders for dye removal. The loose graphite exhibited good methylene blue removal (>97 % across pH levels), indicating that π‐π interaction is the governing factor besides electrostatic attraction. Notably, 5 g of loose graphite led to 100 % removal. Langmuir isotherm fitting disclosed a maximum adsorption capacity of 4.7059 mg g−1. Principal component analysis showed that dye concentration and adsorbent dosage had a greater impact than pH and contact time. However, encasing graphite in a tea bag inhibits adsorption; future studies could explore options facilitating adsorbate penetration into tea bags.

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