Synthesis of Cellulose/Nano-hydroxyapatite Composite Hydrogel Absorbent for Removal of Heavy Metal Ions from Palm Oil Mill Effluents

Wong, Siew Ming; Zulkifli, Muhammad Zikri Aiman; Nordin, Darman; Teow, Yeit Haan

doi:10.1007/s10924-021-02183-6

Cited by 29 publications

(12 citation statements)

References 43 publications

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“…The FTIR spectrum of the HAP–CNC OX and HAP–CNC CA showed quite the same vibrational bands of the HAP to which some distinct bands of the cellulose structure were observed Figure a,b. The broad band at 3000–3600 cm –1 in all the samples was assigned to the –OH stretching vibration mode in cellulose and the physically absorbed water . The band located around 2850–2900 cm –1 in the FTIR spectra of HAP–CNC OX and HAP–CNC CA composites was attributed to the symmetric –CH 2 stretching in cellulose .…”

Section: Results and Discussionmentioning

confidence: 88%

“…The broad band at 3000−3600 cm −1 in all the samples was assigned to the −OH stretching vibration mode in cellulose and the physically absorbed water. 56 The band located around 2850−2900 cm −1 in the FTIR spectra of HAP−CNC OX and HAP−CNC CA composites was attributed to the symmetric −CH 2 stretching in cellulose. 20 The band associated with the stretching vibration of the C−O−C of the pyranose ring at 1060 cm −1 was masked and overlapped with that of the strong asymmetric stretching band of PO 4…”

Section: Kinetics Of Nitrogenmentioning

confidence: 99%

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Urea-Loaded Hydroxyapatite–Carboxylated Cellulose Composites as Slow-Release N Fertilizer Pellets for Efficient Delivery of Nitrogen

Channab,

Elhassani,

Essamlali

et al. 2023

Ind. Eng. Chem. Res.

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Nitrogen (N) is the most widely applied macronutrient to maintain soil fertility. However, the conventional N fertilizers applied to the soil are generally of low N use efficiency due to N loss by means of lixiviation and volatilization. Therefore, the application of slow-release N fertilizers is one of the advanced solutions to overcome these issues. The purpose of this study is to develop new slow-release N fertilizers (N-SRFs) pellets using oxidized cellulose nanocrystals (CNCOX) and citric acid grafted cellulose nanocrystals (CNCCA) modified natural hydroxyapatite hybrid nanocomposites (HAP–CNCox and HAP–CNCCA) as a carrier for nitrogen delivery. The HAP–CNCox and HAP–CNCCA hybrid composites were prepared by an in situ wet chemical precipitation method using phosphate rock as a source of calcium (Ca2+) and phosphorus (PO4 3–). Urea was immobilized onto the CNC–HAP composites in an aqueous solution to produce three N-SRF formulations: HAP–urea, HAP–CNCox–urea, and HAP–CNCCA–urea. Fertilizer formulations were fully characterized by means of structural (FTIR and DRX) and morphological (SEM) tools, and the results demonstrated that urea molecules are strongly bonded to HAP and HAP–CNC composites through several mechanisms including H-bonding, metal–ligand interactions, and physical storage within the existing micro- and nanopores. The water release experiment of developed N-SRFs demonstrated that the developed SRFs displayed a slow-release N property and required 18 days for a complete N release in water compared to the pure urea, which dissolves rapidly within the first 3 h. The release kinetics of urea in water was best described by Korsmeyer–Peppas, while the release mechanism in water is best described by a first-order kinetic model.

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Section: Results and Discussionmentioning

confidence: 88%

Section: Kinetics Of Nitrogenmentioning

confidence: 99%

Urea-Loaded Hydroxyapatite–Carboxylated Cellulose Composites as Slow-Release N Fertilizer Pellets for Efficient Delivery of Nitrogen

Channab,

Elhassani,

Essamlali

et al. 2023

Ind. Eng. Chem. Res.

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“…The prepared lms were utilized directly for FTIR analysis. They were recorded with (Spectrum two, Perkin Elmer, USA) at the 400-4000 cm − 1 wavenumber with the resolution of 4 cm − 1 [33].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Production and characterization of antimicrobial nanocomposite film based on Plantago major seeds gum/carboxymethyl cellulose reinforced by Cerium oxide nanoparticles and fenugreek essential oil

Asadi

Marand

Amiri

et al. 2023

Preprint

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This study aimed to produce Plantago major seeds gum (PMSG) and carboxymethyl cellulose (CMC) antimicrobial nanocomposite film by adding Cerium oxide nanoparticles (CeO2 NPs) (2.5 and 5%W/W) as reinforcing additive and fenugreek seeds essential oil (FSEO) (4 and 8%W/W) as a bioactive agent. The nanocomposite films were prepared by casting method, and moisture content, moisture absorption, opacity, water vapor permeability (WVP), antimicrobial activity, and antioxidant properties of them were examined. FTIR, FESEM, XRD, and TGA tests were carried out to study the morphology, crystalline structure, and thermal stability of films, respectively. Moreover, mechanical properties, for instance, tensile strength (TS), elongation at break (EB), and thickness of the films, were measured. The results indicated that adding CeO2 NPs improved the mechanical properties and formed new crystalline structures on the nanocomposite films. The inclusion of 5% CeO2 NPs and 8% FSEO had a significant reduction in moisture content and moisture absorption (p\(<\)0.05). Besides, FSEO addition did not have a significant effect on the WVP amount (p\(>\)0.05). However, adding CeO2 NPs and FSEO caused a significant effect on antimicrobial and antioxidant properties, and the highest antimicrobial and antioxidant activities were obtained by the film containing 2.5% CeO2 NPs and 8% FSEO. The results showed that the TS was decreased by adding FSEO, and it increased by adding CeO2 NPs, especially at higher concentrations. EB was significantly affected by the addition of CeO2 NPs and FSEO, EB was enhanced by the addition of FSEO, and was reduced by the addition of CeO2 NPs. Instrumental analysis FTIR, FESEM, XRD, and TGA tests showed high potential of PMSG/CMC-based nanocomposite reinforced by CeO2 NPs and FSEO for food packaging technology.

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“…Addressing the extraction of heavy metals/oils from these contaminated water sources has become paramount 1,2 . Among the techniques available to counteract heavy metal pollution, the adsorption method stands out as particularly effective and economical, 3–5 owing to its broad applicability and straightforward design and operation. While various organic and inorganic adsorption materials exist, cellulose stands out as a nearly inexhaustible source of natural polymers, showcasing outstanding structures and properties 5–7 .…”

Section: Introductionmentioning

confidence: 99%

Lightweight hydrophobic cellulose foam material with low density and high porosity applications in Cu (II) adsorption

Wu,

Wang,

Wang

et al. 2023

J of Applied Polymer Sci

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Cellulose foam, renowned for its lightweight properties and exceptional adsorption capacity, has emerged as a significant material of interest. In our study, a distinct functionalized cellulose foam adsorbent was developed using N,N‐methylenebisacrylamide (MBA) as a cross‐linker. This foam was further chemically tailored with 3‐aminopropyltriethoxysilane (APTES) and tannic acid (TA) to optimize its affinity for Cu (II). Utilizing a green and efficient procedure at ambient temperature, MBA was directly crosslinked with MCC sol, the resultant foam features a distinguished three‐dimensional, multi‐walled porous configuration, marked by a strikingly low average density of 0.0306 g/cm3 and an impressive average porosity surpassing 97%. Subsequently, more amino and oxygen‐containing groups were introduced by simple impregnation. The rich functional groups and unique structure enabled the adsorption of Cu (II) up to 93 mg/g, demonstrating an increasing trend in line with rising Cu (II) concentrations. Furthermore, this composite cellulose foam displayed commendable hydrophobic characteristics, evident from a hydrophobic angle surpassing 120°. From both environmental and economic perspectives, this chemically‐modified cellulose material epitomizes an ideal adsorbent, showcasing unparalleled adsorption capacity coupled with robust chemical and structural integrity. As such, it presents a viable option for the efficient sequestration of Cu (II) in wastewater treatments.

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Synthesis of Cellulose/Nano-hydroxyapatite Composite Hydrogel Absorbent for Removal of Heavy Metal Ions from Palm Oil Mill Effluents

Cited by 29 publications

References 43 publications

Urea-Loaded Hydroxyapatite–Carboxylated Cellulose Composites as Slow-Release N Fertilizer Pellets for Efficient Delivery of Nitrogen

Urea-Loaded Hydroxyapatite–Carboxylated Cellulose Composites as Slow-Release N Fertilizer Pellets for Efficient Delivery of Nitrogen

Production and characterization of antimicrobial nanocomposite film based on Plantago major seeds gum/carboxymethyl cellulose reinforced by Cerium oxide nanoparticles and fenugreek essential oil

Lightweight hydrophobic cellulose foam material with low density and high porosity applications in Cu (II) adsorption

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