Batch adsorption studies of the removal of methyl violet 2B by soya bean waste: isotherm, kinetics and artificial neural network modelling

Kooh, Muhammad Raziq Rahimi; Dahri, Muhammad Khairud; Lim, Linda B.L.; Lim, Levan; Malik, Owais Ahmed

doi:10.1007/s12665-016-5582-9

Cited by 58 publications

(14 citation statements)

References 53 publications

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“…As seen in Table 2, all the values of the intercepts are not zero, this indicates that the rate-limiting step was not intraparticle diffusion and other mechanism may have been involved. This observation is very common and has been reported in the removal of hazardous dyes (malachite green and rhodamine B) using water fern (Kooh et al 2016d, e), and also in the adsorption of methyl violet 2B using soya waste (Kooh et al 2016c). …”

Section: Effect Of Contact Time and Kinetics Modellingmentioning

confidence: 59%

Separation of acid blue 25 from aqueous solution using water lettuce and agro-wastes by batch adsorption studies

et al. 2018

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Three plant-based materials, namely water lettuce (WL), tarap peel (TP) and cempedak peel (CP), were used to investigate their potentials as adsorbents using acid blue 25 (AB25) dye as a model for acidic dye. The adsorbents were characterised using Fourier transform infrared spectroscopy, X-ray fluorescence and scanning electron microscope. Batch experiments involving parameters such as pH, temperature, contact time, and initial dye concentration were done to investigate the optimal conditions for the adsorption of AB25 onto the adsorbents. Thermodynamics study showed that the uptake of AB25 by the three adsorbents was feasible and endothermic in nature. Both the Langmuir and Freundlich isotherm models can be used to describe the adsorption process of AB25 onto WL and CP while pseudo-second-order fitted the kinetics data, suggesting that chemisorptions were majorly involved. The use of 0.1 M of NaOH showed the best results in regenerating of the WL, TP and CP's adsorption ability after AB25 treatment.

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Section: Effect Of Contact Time and Kinetics Modellingmentioning

confidence: 59%

Separation of acid blue 25 from aqueous solution using water lettuce and agro-wastes by batch adsorption studies

et al. 2018

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“…Both adsorbents' MV removing capacities are better than peanut straw char (101 mg g -1 ) (Xu et al 2011), Posidonia oceanic leaf (119 mg g -1 ) (Cengiz and Cavas 2010), jackfruit seed (126.7 mg g -1 ) (Dahri et al 2016) and Casuarina equisetifolia needle (165.0 mg g -1 ) (Dahri et al 2013). NP ability to remove MV is on par with pu-erh tea (286 mg g -1 ) (Li et al 2010) while NL is on par with soyabean waste (180 mg g -1 ) (Kooh et al 2016b) and…”

Section: Effect Of Initial Dye Concentrations and Isotherm Modelingmentioning

confidence: 99%

“…The cost of wastewater remediation by adsorption depends on the type of adsorbents. To ensure economic feasibility of the wastewater remediation process, one may choose materials that are renewable, sustainable, abundantly available or materials with little values such as agricultural wastes (Gupta and Nayak 2012;Kooh et al 2016b) and weeds . Activated carbon may have been ideal materials for certain dyes and heavy metals; however, to produce them may be energy intensive.…”

Section: Introductionmentioning

confidence: 99%

Removal of methyl violet 2B dye from aqueous solution using Nepenthes rafflesiana pitcher and leaves

2017

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This study reported Nepenthes rafflesiana pitcher (NP) and Nepenthes rafflesiana leaves (NL) as new adsorbents for methyl violet (MV) dye. The experiments were done using 2 h contact time and without any pH alteration (pH 4.4). The effects of pH and ionic strength revealed hydrophobic-hydrophobic interaction as the predominant force of dye interaction with the adsorbent. Both NP-MV and NL-MV followed pseudo-second-order model indicating the adsorption processes may be governed by chemical process. Weber-Morris intraparticle diffusion model verified that the rate-limiting step of both the NP-MV and NL-MV systems is not intraparticle diffusion. The Langmuir model best described the adsorption process with high maximum monolayer adsorption (q m ) of 288.7 and 194.0 mg g -1 for NP-MV and NL-MV, respectively. Thermodynamics studies revealed both NP-MV and NL-MV systems are spontaneous and endothermic in nature. From the regeneration study, it was found that NP's and NL's adsorption capacities could be recovered using distilled water and base whereby distilled water was able to recover 78% (NP) and 71% (NL) while base was able to recover 82% for both samples after three regeneration cycles.

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“…In addition, MV2B is an active ingredient present in Gram's biological stain which is used for bacterial classification (Conn 1940). MV2B was reported to cause inhibition on the growth of bacteria and photosynthesis of aquatic plants (Kooh et al 2016). Furthermore, MV2B is also a potential carcinogen and can cause severe irritations to the eye, skin and respiratory tracts in human (Vachalkova et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Aquatic plant, Ipomoea aquatica, as a potential low-cost adsorbent for the effective removal of toxic methyl violet 2B dye

et al. 2020

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Ipomoea aquatica (IA) was investigated for its potential as a low-cost adsorbent to remove toxic methyl violet 2B (MV2B) dye in aqueous solutions. Optimising parameters such as the effects of contact time, medium pH and ionic strength (using NaCl, NaNO3, KCl and KNO3) were investigated. The results indicated that 150 min were sufficient for the adsorption to reach an equilibrium state and no adjustment of pH medium was necessary. Batch adsorption experiments such as adsorption isotherm, thermodynamics and kinetics were investigated and the experimental isotherm data were fitted to six isotherm models, namely Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Redlich-Peterson and Sips, with the latter being the best-fit isotherm model showing maximum adsorption capacity (qmax) of 267.9 mg g−1. Thermodynamics studies indicated adsorption of MV2B to be exothermic in nature, occurring spontaneously. The kinetics was best described by the pseudo-second-order model. Regeneration of IA pointed to its reusability, maintaining high adsorption capacity even up until Cycle 5 when treated with acid (HCl) and base (NaOH). Functional groups such as hydroxyl and amine groups which could be involved in the adsorption of MV2B were determined using FTIR spectroscopy, and the point of zero charge of IA was found to be at pH 6.81.

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Batch adsorption studies of the removal of methyl violet 2B by soya bean waste: isotherm, kinetics and artificial neural network modelling

Cited by 58 publications

References 53 publications

Separation of acid blue 25 from aqueous solution using water lettuce and agro-wastes by batch adsorption studies

Separation of acid blue 25 from aqueous solution using water lettuce and agro-wastes by batch adsorption studies

Removal of methyl violet 2B dye from aqueous solution using Nepenthes rafflesiana pitcher and leaves

Aquatic plant, Ipomoea aquatica, as a potential low-cost adsorbent for the effective removal of toxic methyl violet 2B dye

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