Kinetics and thermodynamics of textile dye adsorption from aqueous solutions using babassu coconut mesocarp

Vieira, Adriana P.; Santana, Sirlane Aparecida Abreu; Bezerra, Cícero Wellington Brito; Silva, Hildo A. S.; Chaves, José Alberto Pestana; Melo, Júlio C.P. de; Filho, Edson Cavalcanti da Silva; Airoldi, Cláudio

doi:10.1016/j.jhazmat.2008.12.043

Cited by 198 publications

(120 citation statements)

References 26 publications

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“…The crystalline structures of MCC and FM were characterized by X-ray diffraction (XRD) using a Rigaku D/max-2200 diffractometer with a Cu Kα target, operated at 1200 W (40 kV, 30 mA). The point of zero charge (pHpzc) of the adsorbents tested was determined using a literature method (Vieira et al 2009). A NaCl solution (0.01 mol•L -1 , 20 mL) was added to a series of 100 mL conical flasks, the initial pH (pHi) values of the solutions were adjusted in the range of pH 2 to 11, FM-1 (100 mg) was added to every flask and the resulting suspensions were shaken in an acclimatized shaker at 298 K for 10 h. After this time, the final pH (pHf) was determined, and the difference between the initial and final pH values was calculated according to ΔpH= pHi -pHf, a plot of ΔpH as a function of pHi was subsequently constructed.…”

Section: Characterizationmentioning

confidence: 99%

“…Cellulose has been used in the removal of colored matter from dye wastewater (Hwang and Chen 1993). In addition, some adsorption materials obtained from cellulosebased waste products have also been used for the adsorption of dyes, including sawdust (Ofomaja 2008), rice husk (Zou et al 2011), wheat shell (Vieira et al 2009), and banana and orange peel (Annadurai et al 2002). However, most of them reported have a low adsorption capacity, and the characteristic that limits the development of the class of renewable adsorbents.…”

Section: Introductionmentioning

confidence: 99%

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Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Li¹,

Lijuan²

2014

BioResources

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Microcrystalline cellulose (MCC) was functionalized with quaternary amine groups for use as an adsorbent to remove Congo Red dye (CR) from aqueous solution. The ultrasonic pretreatment of MCC was investigated during its functionalization. Characterization was conducted using infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The batch adsorption of the functionalized MCC was studied to evaluate the effects of dye concentration, pH of solution, temperature, and NaCl concentration on the adsorption CR. The adsorbent (FM-1) obtained using ultrasonic pretreatment of MCC under 10.8 kJ•g -1 exhibited an adsorption capacity of 304 mg•g -1 at initial pH under a dose of 0.1 g•L -1 and initial concentration of 80 mg•L -1 . After functionalization, the FT-IR and XPS results indicated that the quaternary amine group was successfully grafted onto the cellulose, the surface was transformed to be coarse and porous, and the crystalline structure of the original cellulose was disrupted. FM-1 has been shown to be a promising and efficient adsorbent for the removal of CR from an aqueous solution.

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Section: Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Li¹,

Lijuan²

2014

BioResources

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“…Presently, agricultural waste materials have been proposed as economic and eco-friendly (Kumar and Kumar 2014). This will help in converting unwanted, surplus agricultural waste, of which billions of kilograms are produced annually, to value-added products (Vieira et al 2009). These will protect the environment by getting rid of the danger that such waste can pose if left alone, most especially where disposal of agricultural wastes have become a major problem.…”

Section: Introductionmentioning

confidence: 99%

Sustainable conversion of agro-wastes into useful adsorbents

et al. 2016

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Preparation and characterization of raw and activated carbon derived from three different selected agricultural wastes: kola nut pod raw and activated (KNPR and KNPA), bean husk raw and activated (BHR and BHA) and coconut husk raw and activated (CHR and CHA) were investigated, respectively. Influences of carbonization and acid activation on the activated carbon were investigated using SEM, FTIR, EDX, pH pzc and Boehm titration techniques, respectively. Carbonization was done at 350°C for 2 h followed by activation with 0.3 M H 3 PO 4 (orthophosphoric acid). Results obtained from SEM, FTIR, and EDX revealed that, carbonization followed by acid activation had a significant influence on morphology and elemental composition of the samples. SEM showed welldeveloped pores on the surface of the precursors after acid treatment, FTIR spectra revealed reduction, broadening, disappearance or appearance of new peaks after acid activation. EDX results showed highest percentage of carbon by atom respectively in the order BHA [ KNPA [ CHA respectively. The pH pzc was found to be 5.32, 4.57 and 3.69 for KNPA, BHA and CHA, respectively. Boehm titration result compliments that of pH pzc , indicating that the surfaces of the prepared adsorbents are predominantly acidic. This study promotes a sustainable innovative use of agrowastes in the production of cheap and readily available activated carbons, thereby ensuring more affordable water and effluent treatment adsorbents.

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“…As adsorbents, activated carbons from biomass residues have been widely studied. Among these residues stand out cork powder 6 , peach stones, and PET bottles 7 , coconut endocarp and palm endocarp 8 , olive stone 9 , tobacco residue 10 sisal waste 11 , mangosteen peel 12 , coconut mesocarp 13 , oil palm empty fruit bunch, bamboo stem, coconut shells 14 . Indeed, researchers have been seeking the best adsorbent to solve a local problem through the available natural disposals.…”

Section: Introductionmentioning

confidence: 99%

Effect of Solution pH on the Removal of Paracetamol by Activated Carbon of Dende Coconut Mesocarp

Ferreira

Couto

Carvalho

et al. 2015

Chem.Biochem.Eng.Q.

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Activated carbon of dende coconut mesocarp was used to investigate the removal of paracetamol from water by adsorption. The results indicated that the retention of paracetamol was favored in activated carbon with neutral surface properties. The textural features and presence of a transport pores network contri buted to ensuring the accessibility to the inner porosity, and the microporosity must be large enough to accommodate the paracetamol molecule. Chemisorption and mainly physisorption are important in the paracetamol removal. Pseudo-second order equation and Langmuir model were chosen to best present the experimental data. The adsorption process was non-spontaneous and endothermic with increase in system dis order.

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Kinetics and thermodynamics of textile dye adsorption from aqueous solutions using babassu coconut mesocarp

Cited by 198 publications

References 26 publications

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Functionalization of Microcrystalline Cellulose with N,N-dimethyldodecylamine for the Removal of Congo Red Dye from an Aqueous Solution

Sustainable conversion of agro-wastes into useful adsorbents

Effect of Solution pH on the Removal of Paracetamol by Activated Carbon of Dende Coconut Mesocarp

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