Efficiency of Sawdust as Low-Cost Adsorbent for Dyes Removal

Chikri, R.; Elhadiri, N.; Benchanâa, M.; maguana, Y. El

doi:10.1155/2020/8813420

Cited by 106 publications

(53 citation statements)

References 116 publications

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“…The batch biosorption experiments were performed in a shaking incubator (JSSI-100C, JSR, Tokyo, Japan) at 140 rpm. The experiments were performed at different parameters, including contact time (0-240 min), initial MB dye concentration (2-7 mg/L), particle size of biosorbents (<600 µm, 600-1180 µm and >1180 µm), adsorbent dosage (0.5 g/L-10 g/L), pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12), and temperature (20-60 • C). The solution pH was adjusted by adding 0.1M NaOH or 0.1M HCl before adding the adsorbent.…”

Section: Batch Biosorption Experimentsmentioning

confidence: 99%

“…Many conventional chemical, physical, and biological methods have been developed for the decontamination of water, but unfortunately, most of these methods are not applicable for large scale industries because of the limitations posed by the majority of them, such as high cost, low efficiency at low dye concentrations, and sludge production [3,4]. Adsorption is considered an efficient and prevalent process used for wastewater remediation, as it is capable of eliminating hazardous pollutants and color [5]. It has been reported as an attractive method, due to its multiple benefits, such as the operation facileness, the design simplicity and the high-quality treated water production [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Seeds and Peels of Citrullus colocynthis as Efficient Natural Adsorbent for Methylene Blue Dye

Alghamdi

Mannoubi

2021

Processes

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Natural adsorbents as low-cost materials have been proved efficient for water remediation and have significant capacity for the removal of certain chemicals from wastewater. The present investigation aimed to use Citrullus colocynthis seeds (CCSs) and peels (CCPs) as an efficient natural adsorbent for methylene blue (MB) dye in an aqueous solution. The examined biosorbents were characterized using surface area analyzer (BET), scanning electron microscope (SEM), thermogravimetric analyzer (TGA) and Fourier transform infra-red (FT-IR) spectroscopy. Batch adsorption experiments were conducted to optimize the main factors influencing the biosorption process. The equilibrium data for the adsorption of MB by CCSs were best described by the Langmuir isotherm followed by the Freundlich adsorption isotherms, while the equilibrium data for MB adsorption by CCPs were well fitted by the Langmuir isotherm followed by the Temkin isotherm. Under optimum conditions, the maximum biosorption capacity and removal efficiency were 18.832 mg g−1 and 98.00% for MB-CCSs and 4.480 mg g−1 and 91.43% for MB-CCPs. Kinetic studies revealed that MB adsorption onto CCSs obeys pseudo-first order kinetic model (K1 = 0.0274 min−1), while MB adsorption onto CCPs follows the pseudo-second order kinetic model (K2 = 0.0177 g mg−1 min−1). Thermodynamic studies revealed that the MB biosorption by CCSs was endothermic and a spontaneous process in nature associated with a rise in randomness, but the MB adsorption by CCPs was exothermic and a spontaneous process only at room temperature with a decline in disorder. Based on the obtained results, CCSs and CCPSs can be utilized as efficient, natural biosorbents, and CCSs is promising since it showed the highest removal percentage and adsorption capacity of MB dye.

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Section: Batch Biosorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Seeds and Peels of Citrullus colocynthis as Efficient Natural Adsorbent for Methylene Blue Dye

Alghamdi

Mannoubi

2021

Processes

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“…Dye removal methods have been summarized in review articles by many authors [5,[80][81][82][83][84][85][86][87][88][89][90][91][92][93]. The importance of removing dyes is driven by a number of factors; they are harmful to health, often mutagenic and carcinogenic, inhibit photosynthetic activity in the aqueous medium, and even at very low levels (<1 ppm) are highly visible and undesirable in water bodies, with color being the most obvious parameter affecting water quality [94,95]. Hessel C. et al described the percentage of non-fixed dye that may be discharged in the effluent as a function of dye classes from EPA and OECD legislation [5].…”

Section: Dye Removing Methods Technologiesmentioning

confidence: 99%

Factors Affecting Synthetic Dye Adsorption; Desorption Studies: A Review of Results from the Last Five Years (2017–2021)

2021

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The primary, most obvious parameter indicating water quality is the color of the water. Not only can it be aesthetically disturbing, but it can also be an indicator of contamination. Clean, high-quality water is a valuable, essential asset. Of the available technologies for removing dyes, adsorption is the most used method due to its ease of use, cost-effectiveness, and high efficiency. The adsorption process is influenced by several parameters, which are the basis of all laboratories researching the optimum conditions. The main objective of this review is to provide up-to-date information on the most studied influencing factors. The effects of initial dye concentration, pH, adsorbent dosage, particle size and temperature are illustrated through examples from the last five years (2017–2021) of research. Moreover, general trends are drawn based on these findings. The removal time ranged from 5 min to 36 h (E = 100% was achieved within 5–60 min). In addition, nearly 80% efficiency can be achieved with just 0.05 g of adsorbent. It is important to reduce adsorbent particle size (with Φ decrease E = 8–99%). Among the dyes analyzed in this paper, Methylene Blue, Congo Red, Malachite Green, Crystal Violet were the most frequently studied. Our conclusions are based on previously published literature.

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“…On average, the quantitative percentages of hemicellulose, cellulose and lignin in sawdust are observed in the range of 15-35, 35-60, and 15-30%, respectively [95]. Table 2 summarizes the elemental compositions of various types of sawdust [95]. Table 3 shows a general approximation of the composition of sawdust.…”

Section: Sawdust Characteristicsmentioning

confidence: 99%

“…The major chemical constituents of sawdust are hemicellulose, cellulose and lignin. On average, the quantitative percentages of hemicellulose, cellulose and lignin in sawdust are observed in the range of 15–35, 35–60, and 15–30%, respectively [ 95 ]. Table 2 summarizes the elemental compositions of various types of sawdust [ 95 ].…”

Section: Sawdustmentioning

confidence: 99%

Sawdust for the Removal of Heavy Metals from Water: A Review

2021

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The threat of the accumulation of heavy metals in wastewater is increasing, due to their abilities to inflict damage to human health, especially in the past decade. The world’s environmental agencies are trying to issue several regulations that allow the management and control of random disposals of heavy metals. Scientific studies have heavily focused on finding suitable materials and techniques for the purification of wastewaters, but most solutions have been rejected due to cost-related issues. Several potential materials for this objective have been found and have been compared to determine the most suitable material for the purification process. Sawdust, among all the materials investigated, shows high potential and very promising results. Sawdust has been shown to have a good structure suitable for water purification processes. Parameters affecting the adsorption mechanism of heavy metals into sawdust have been studied and it has been shown that pH, contact time and several other parameters could play a major role in improving the adsorption process. The adsorption was found to follow the Langmuir or Freundlich isotherm and a pseudo second-order kinetic model, meaning that the type of adsorption was a chemisorption. Sawdust has major advantages to be considered and is one of the most promising materials to solve the wastewater problem.

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Efficiency of Sawdust as Low-Cost Adsorbent for Dyes Removal

Cited by 106 publications

References 116 publications

Investigation of Seeds and Peels of Citrullus colocynthis as Efficient Natural Adsorbent for Methylene Blue Dye

Investigation of Seeds and Peels of Citrullus colocynthis as Efficient Natural Adsorbent for Methylene Blue Dye

Factors Affecting Synthetic Dye Adsorption; Desorption Studies: A Review of Results from the Last Five Years (2017–2021)

Sawdust for the Removal of Heavy Metals from Water: A Review

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