Utilization of watermelon (<i>Citrullus lanatus</i>) rinds as a natural low-cost biosorbent for adsorption of methylene blue: kinetic, equilibrium and thermodynamic studies

Jawad, Ali H.; Ngoh, Ying-Yuan; Radzun, Khairul Adzfa

doi:10.1080/16583655.2018.1476206

Cited by 85 publications

(28 citation statements)

References 47 publications

(55 reference statements)

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“…Figure 7 shows the effect of variable pH from 3 to 12 on the adsorption capacity with MB. At lower pH, the surface charge may be positively charged, thus making (H + ) ions compete effectively with dye cations causing a decrease in the amount of dye adsorbed [57]. At higher pH values, the surface of ATBP adopts a negative surface charge, which contributes to enhanced uptake of positively charged dye species via attractive electrostatic attraction, in accordance with an increase in the rate of adsorption [58].…”

Section: Effect Of Phmentioning

confidence: 99%

“…In batch adsorption, the removal rate of the adsorbate from aqueous solutions is controlled mostly by the transport of dye molecules from the surrounding sites to the interior sites of the adsorbent particles [60]. Hence it can be stated that, the increase of adsorption capacity is mainly determined by the fact that the high initial MB concentration not only provides a large driving force to overcome all mass transfer resistances between the aqueous and solid phases [57], but also determines a higher probability of collision between MB ions and ATBP surface. Additional time was needed to reach equilibrium for higher MB concentration because there was a tendency for MB molecules to penetrate deeper within the interior surface of the ATBP and be adsorbed at active pore sites.…”

Section: Effect Of Phmentioning

confidence: 99%

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Adsorptive removal of methylene blue by chemically treated cellulosic waste banana (Musa sapientum) peels

Jawad

Rashid

Ishak

et al. 2018

Journal of Taibah University for Science

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101

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Acid-treated banana peel (ATBP) was developed by H 2 SO 4 activation to be a potential adsorbent for methylene blue (MB) from aqueous solution. Batch mode adsorption studies were conducted by varying adsorbent dosage (0.02-0.30 g), solution pH (3-12), initial MB concentrations (10-300 mg/L) and contact time (0-1440 min). The adsorption data of MB by ATBP were in agreement with Langmuir isotherm, with maximum adsorption capacities of 250 mg/g at 303 K. The pseudo-first-order kinetic model best described the kinetic data. The adsorption of MB onto ATBP surface was endothermic in nature and spontaneous under the experimented conditions. Results supported the potential use of the ATBP as an effective adsorbent for the treatment of cationic dyes such as MB from aqueous solution. ARTICLE HISTORY

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Section: Effect Of Phmentioning

confidence: 99%

Section: Effect Of Phmentioning

confidence: 99%

Adsorptive removal of methylene blue by chemically treated cellulosic waste banana (Musa sapientum) peels

Jawad

Rashid

Ishak

et al. 2018

Journal of Taibah University for Science

Self Cite

101

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“…The results compiled in Table 3 shows that Langmuir model fitted very well to the experimental data, showing the highest R 2 value compared to Freundlich isotherm. It should be noted that most of the isotherm adsorption studies of MB on various adsorbents follow the Langmuir isotherm model [25][26][27][28] . Values of the adsorption capacities of other adsorbents for MB from the literature are given in Table 4 for comparison.…”

Section: Sorption Isothermsmentioning

confidence: 99%

“…Natural adsorbents are preferred for their biodegradable, non-toxic nature, low commercial value and highly cost-effective nature. A number of non-conventional and low cost agro wastes sorbents have been tried for removing MB from aqueous solution via adsorption process [25][26][27][28] .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Methylene Blue from aqueous solution using Senegal River Typha australis

N’diaye

Ali²,

Bollahi

et al. 2020

Mediterr.J.Chem.,

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In this work, batch adsorption experiments were carried out for the removal of Methylene Blue (MB) from aqueous solutions using Typha australis leaf as a low cost adsorbent. The effects of some variables governing the efficiency of the process such as adsorbent mass, pH, ionic strength, contact time and temperature were investigated. The adsorption kinetic data were analyzed using the Pseudo First Order (PFO) and Pseudo Second Order (PSO) models. The experimental equilibrium data were analyzed using Langmuir and Freundlich isotherm models. The results show that the PSO model is the best for describing the adsorption of MB by Typha australis for all initial MB concentrations. The equilibrium data fitted well with the Langmuir model with the monolayer adsorption capacity for MB-Typha australis leaf system was of 103.12 mg g-1. The values of activation parameters such as free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) were also determined as - 4.44 kJ mol−1, 55.13 kJ mol−1 and 203.21 J mol−1 K−1, respectively. The thermodynamics parameters of MB-Typha australis system indicate spontaneous and endothermic process. These results indicate that the Typha australis leaf can be feasibly employed for the eradication of MB from aqueous solution.

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“…Comparatively, the corn peel after adsorption of RBBR dye outcome in a more even surface compared to after adsorption of RBV5 dye as some binding sites were still available. In overall with the presence of some heterogeneous pores on the surface of the adsorbent, allowed the dye molecules to be adsorbed more due to increase in surface area and homogenous pores also increased the access of binding sites [16]. However, compared to raw watermelon peel, raw corn peel pores seem to be much deep which could provide large surface area for the both dye particles to interact.…”

Section: Characteristics Of Adsorbentsmentioning

confidence: 99%

Adsorption of azo and anthraquinone dye by using watermelon peel powder and corn peel powder: equilibrium and kinetic studies

2019

Biointerface Res Appl Chem

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Clean water is an essential element for the survival of humans and nature. However, the tremendous growth in industrialization has degraded the water quality by introducing pollutants such as dyes into the main water bodies such as rivers. In this research, the locally collected agricultural wastes such as watermelon peel (Citrullus lanatus) and corn peel (Zea Mays) were tested on two types of synthetics dyes such Remazol Brilliant Violet 5R (RBV5) and Remazol Brilliant Blue R (RBBR). From the screening test, the watermelon peel achieved the highest color removal percentage with 44.8% and followed by corn's peel with 18.89%. Both adsorbents were selected for the batch adsorption test by varying the parameters. Based on the results achieved from the batch adsorption test, the optimum removal of dye particles was achieved at the lowest concentration of dye solutions. The optimum pH value to achieve a high percentage of color removal is at pH3, which is acidic. In this case, the 3 g of adsorbent dosage achieved the highest percentage of color removal compared to 5 g. This could due to insufficient contact time. In addition, the chemical and physical characteristics of the adsorbents were analyzed using FESEM and FTIR respectively. By analyzing the surface texture and functional group, differences in the adsorbents before and after adsorption were noticed. Besides that, based on the obtained R 2 values from the linear plotting, the Temkin isotherm model and pseudo-second-order kinetic model fitted well compared to other isotherm and kinetic models. In conclusion, the watermelon peel and corn peel are capable of removing dye particles in the industrial effluent under selective conditions with low cost while being environmentally friendly.

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Utilization of watermelon (Citrullus lanatus) rinds as a natural low-cost biosorbent for adsorption of methylene blue: kinetic, equilibrium and thermodynamic studies

Cited by 85 publications

References 47 publications

Adsorptive removal of methylene blue by chemically treated cellulosic waste banana (Musa sapientum) peels

Adsorptive removal of methylene blue by chemically treated cellulosic waste banana (Musa sapientum) peels

Adsorption of Methylene Blue from aqueous solution using Senegal River Typha australis

Adsorption of azo and anthraquinone dye by using watermelon peel powder and corn peel powder: equilibrium and kinetic studies

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