Using Tectona Grandis Biomass to Produce Valuable Adsorbents for Pesticide Removal from Liquid Effluent

Cansado, I.P.P.; Mourão, P.A.M.; Belo, Cristóvão Ramiro

doi:10.3390/ma15175842

Cited by 5 publications

(11 citation statements)

References 35 publications

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“…Both the ACs used, one from Merck (powder form), purchased from Sigma Aldrich, Madrid, Spain and the other from Norit (Norit 1240 X, in powder and granular form), purchased from Fisher Scientific, Lisbon, Portugal, were texturally and chemically characterized by nitrogen adsorption at 77 K, elemental analysis, and through the determination of the pH at the point of zero charge. The procedures used for these purposes are described elsewhere [8,26,27]. The surface of the ACs was also analyzed by ATR-FTIR spectroscopy analysis measurements, in the range between 450 and 4000 cm −1 , performed on a Perkin Elmer Spectrum Two IR spectrophotometer with an Attenuated Total Reflection (ATR) accessory, purchased from I.L.C., Lisbon, Portugal.…”

Section: Acs Structural and Chemical Characterizationmentioning

confidence: 99%

“…ACs produced from a variety of precursors have been successful in removing pollutants from the liquid phase. Examples include the removal of pesticides (4-chloro-2methylphenoxyacetic acid and diuron) with ACs prepared from Tectona Grandis [7][8][9], dyes with ACs prepared from different biomass, activated with KOH, NaOH, and H 2 SO 4 [9,10], Cu 2+ , Zn 2+ , and Pb 2+ with ACs prepared from Phaseolus aureus hulls, activated with steam [11], As 3+ with granulated biochar [12], and pharmaceutical products with ACs prepared from waste materials and wood [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Cansado,

Mourão,

Castanheiro

2023

Processes

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Adsorbents presenting high adsorption capacity, fast adsorption rate, easy regeneration, and a good possibility for reusability are ideal for removing 4-chloro-2-methyl-phenoxyacetic acid (MCPA) or other pesticides from wastewater. Here, the effects of regeneration treatments on adsorption–desorption cycles are examined using two commercial activated carbons (ACs) (Merck and Norit 1240 X). MCPA adsorption was fast on Merck and Norit ACs in powder form (6 h) but on Norit AC, in granular form, adsorption was too slow, and the equilibrium time was reached only after 288 h. MCPA adsorption kinetic data were analyzed by applying pseudo-first-order, pseudo-second-order, and Weber–Morris models. The pseudo-second-order model fit better to all data, and the Weber–Morris representation allows confirming that on Norit 1240 X, in granular form, the pore diffusion was the limiting factor concerning the MCPA adsorption. Merck and Norit 1240 X (in powder and granular form) ACs loaded with MCPA were submitted to different regeneration process by washing with distilled water, ethanol, HNO3, and NaOH solutions and washed with NaOH solutions or ethanol followed by a thermal treatment. The ACs regenerated with ethanol performed well in the subsequent adsorption–desorption cycles. All ACs had more than 99% desorbed MCPA after the first cycle of washing with ethanol. The washing with NaOH solution was less efficient. The regeneration process, consisting of washing the sample with a solution of NaOH and subsequent heating at 573 K, was very effective. After this regeneration procedure, the amount of MCPA adsorbed on Norit 1240 X AC was even higher than the amount adsorbed in the first adsorption cycle. At present, washing methods for adsorbent regeneration are not used at an industrial level. However, research for environmentally friendly regeneration methods is necessary to achieve the objectives of the circular economy.

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Section: Acs Structural and Chemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Cansado,

Mourão,

Castanheiro

2023

Processes

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“…The adsorption capacity of ACs for different pollutants, in the aqueous phase, depends on numerous factors, and that complexity represents a challenge for researchers. Some of the parameters influencing the removal of MCPA, by ACs, from the aqueous phase were previously optimized [7]. Based on these conditions, the MCPA adsorption was done at pH = 3.…”

Section: Mcpa Kinetic Studiesmentioning

confidence: 99%

“…Both ACs used, one from Merck and the other from Norit (Norit 1240 X, in a powder and granular form), were texturally and chemically characterized, by nitrogen adsorption, at 77 K, elemental analysis, and through the determination of the pH at the point of zero charge. The procedures used for these purposes are described elsewhere [7]. The surface of the ACs was also analyzed by ATR-FTIR spectroscopy analysis measurements, in the range between 450 and 4000 cm−1, performed on a PerkinElmer Spectrum, Two IR spectrophotometer with an Attenuated Total Reflection (ATR) accessory.…”

Section: Introductionmentioning

confidence: 99%

Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Cansado¹,

Mourão²,

Castanheiro³

2023

Preprint

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This paper describes the influence of the regeneration treatments on 4-chloro-2-methyl-phenoxyacetic acid (MCPA)-loaded activated carbons (ACs) on adsorption-desorption cycles with two commercial ACs, Merck and Norit 1240 X ( Norit 1240 X was used in a granular and powder form). The ACs were saturated with MCPA and then submitted to four regeneration cycles, by washing with ethanol, NaOH solutions and washed with NaOH solutions followed by a thermal treatment. The ACs regenerated with ethanol showed a better performance concerning the successive adsorption-desorption cycles. On the first cycle, the MCPA desorbed, from washing with ethanol, from all ACs was higher than 99%. After a fourth adsorption-desorption cycle, washing regeneration combined with thermal treatment allowed excellent regeneration results. The amount of MCPA adsorbed on Norit 1240 X AC was higher than the amount adsorbed in the first cycle. MCPA adsorption kinetic data were analyzed by applying pseudo-first-order, pseudo-second-order, and Weber-Morris models. The pseudo-second-order fit better fit to the data and the Weber-Morris representation allows confirming that on Norit 1240 X, in a granular form, the pore diffusion was the limiting factor concerning the MCPA adsorption.

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“…Tectona (Tectona grandis) is a genus of Lamiaceae family, extensively utilized for home stuffs, indoor floor boards, sculpturing, boat decks, cabinetry, and so on. , It possesses cellulose (∼47.5%), lignin (∼29.9%), and carbon (∼49%), representing a favorable carbon natural source and has been widely considered in biomass utilization research areas. − Thus, the large quantity of lignocellulosic biomass in dead teak leaves as raw carbon precursors for the production of ACs is a desirable candidate for the removal of dyes, production of biogas, and wastewater treatment. − …”

Section: Introductionmentioning

confidence: 99%

Fabrication of Low-Cost and High-Energy Storage Capacitor Electrode from Teak (Tectona grandis) Leaves

et al. 2023

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In this work, the preparation of porous carbon obtained from teak (Tectona grandis) leaves is reported and used for supercapacitors (SCs). The teak leaf carbon (TLC) was prepared using the biowaste as the carbon source precursors by NaOH activation and pyrolysis at 700−1000 °C under a nitrogen atmosphere. The crystallinity, structural features, textural properties, and thermal stability of TLCs were characterized by a variety of state-of-the-art techniques. Further electrochemical (EC) measurements, such as cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge−discharge using a three-electrode setup, were done. The TLC-900 has micro-and mesoporous materials with large surface areas and pore volumes as high as 1692.6 m 2 g −1 and 0.86 cm 3 g −1 , respectively. Also, they exhibit remarkable EC and capacitive properties, achieving a maximum high specific capacitance (C sp ) of 310 F g −1 with a current density of 1.0 A g −1 in a 3.0 M KOH solution. Notably, TLC-900 attained a EC stability, achieving 123% retention in the same electrolyte after 10,000 cycles at a current of 1.0 A g −1 . As a result, the fabricated device displayed a maximum energy density of 24 W h kg −1 and power density of 1818 W kg −1 at a current density of 10 A g −1 . These outstanding EC behaviors, oxygen-containing functional groups, and structural characteristics of this porous carbon material indicate that TLCs are attractive for the fabrication of future large-scale industrial SCs.

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Using Tectona Grandis Biomass to Produce Valuable Adsorbents for Pesticide Removal from Liquid Effluent

Cited by 5 publications

References 35 publications

Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase

Fabrication of Low-Cost and High-Energy Storage Capacitor Electrode from Teak (Tectona grandis) Leaves

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