Bamboo-Based Biofoam Adsorbents for the Adsorption of Cationic Pollutants in Wastewater: Methylene Blue and Cu(II)

Qiu, Chongpeng; Zhang, Xuelun; Zhang, You; Tang, Qi; Yuan, Zihui; Hoop, Cornelis F. De; Cao, Jiwen; Hao, Shilin; Liang, Ting; Li, Feng; Huang, Xingyan

doi:10.1021/acsomega.1c03438

Cited by 15 publications

(2 citation statements)

References 74 publications

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“…The foam is made rigid or strong because the bubbles can resist a lot of pressure [7]. Compare to all RPU composites, the larger diameter pore size was found on RPU pure foams 0.0703 mm due to the RPU pure composite containing a small number of surface hydroxyl groups [8,9]. This is because large surface areas of cell walls were obtained in RPU pure composite with larger diameter pore size which might be low for sound absorption.…”

Section: Effect Of Bamboo Fiber Filler On the Diameter Pore Size Of R...mentioning

confidence: 98%

The Physical and Sound Absorption Property of Lightweight Rigid Polyurethane Composite Reinforced Bamboo Fiber for Roof Applications

Adyla Illyana Roseli,

Nik Normunira Mat Hassan,

Abdul Mutalib Leman

et al. 2023

ARASET

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Rigid polyurethane (RPU) foams as roof insulation have become increasingly popular in Southeast Asian countries and have been extensively used for absorbing sound and reducing noise because of their good sound damping, viscoelasticity, and low density. In this study, the RPU foam composite reinforced bamboo fiber was investigated by physical characterization by SEM, TGA, and FTIR, and the sound absorption was measured by the Impedance Tube Test. The morphology result of the RPU foam composite indicates the size of the diameter pore influenced the sound absorption by adding bamboo fiber as a filler. The thermal degradation of the presence of lignin in the bamboo fiber at the temperature range of 400 °C to 500 °C and the total weight loss is 76 % at 429 °C temperature. FTIR spectrum shows that the peak at 2890 to 2935 cm-1 are indicated –CH stretching vibrations and characteristics for bamboo fiber can be used in polymer composites. The sound absorption of RPU 25 foam composite reinforced bamboo fiber was found 0.74 absorbance at a frequency of 1250 Hz. RPU foam reinforced bamboo fiber as a filler has the highest transmission loss RPU 35 is 21 dB at a frequency range of 1600 Hz. The findings indicate by increasing the content of bamboo fiber as filler, the diameter of the open pore of RPU 25 and RPU 35 foam composite had the potential for sound absorption to absorb at low frequency to achieve greater sound absorption for roof insulation.

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Section: Effect Of Bamboo Fiber Filler On the Diameter Pore Size Of R...mentioning

confidence: 98%

The Physical and Sound Absorption Property of Lightweight Rigid Polyurethane Composite Reinforced Bamboo Fiber for Roof Applications

Adyla Illyana Roseli,

Nik Normunira Mat Hassan,

Abdul Mutalib Leman

et al. 2023

ARASET

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“…The correlation coefficient (R 2 ) associated with the PSO was much greater than those related to the PFO, E, and IPD models. Thus, the PSO describes the adsorption mechanism more accurately because it infers that the adsorption of Pb 2+ ions by the κ-CG/CL hydrogel is attributed to chemical adsorption [59].…”

Section: Adsorption Kinetics Of κ-Cg/cl Hydrogelmentioning

confidence: 99%

Adsorption of Pb2+ Ions from Aqueous Solution onto Porous Kappa-Carrageenan/Cellulose Hydrogels: Isotherm and Kinetics Study

Kalaiselvi¹,

Mohandoss

Ahmad

et al. 2023

Sustainability

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Heavy metal ion pollution poses severe health risks. In this study, a kappa-carrageenan/cellulose (κ-CG/CL) hydrogel was prepared using a facile one-step method to remove Pb2+ ions from aqueous solutions. The functional groups and crystallinity nature of κ-CG/CL hydrogel have been identified via Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). In contrast, the porous morphology and size distribution on the surface of κ-CG/CL hydrogel with a pore size of 1–10 μm were identified using scanning electron microscope (SEM) and Brunauer–Emmett–Teller (BET) surface area analysis. The as-prepared κ-CG/CL hydrogel effectively removed Pb2+ ions, primary environmental pollutants. The effects of pH and contact time on Pb2+ adsorption were studied along with the adsorption isotherms and kinetics of Pb2+ adsorption onto the hydrogels from aqueous solutions. Notably, the aqueous solutions were effectively treated with the prepared κ-CG/CL hydrogels to remove Pb2+ ions. The adsorption results fit well with pseudo-first- and second-order kinetic, Elovich, intra-particle diffusion, and Langmuir and Freundlich isotherm models. Based on the fitting results, the maximum adsorption capacity was obtained with the Freundlich isotherm model of κ-CG/CL hydrogel found to be 486 ± 28.5 mg/g (79%). Reusability studies revealed that the κ-CG/CL hydrogel could remove Pb2+ ions with more than 79% removal efficiency after eight adsorption–desorption cycles. In addition, its mechanism for efficiently adsorbing and removal of Pb2+ ions was analyzed. These findings imply that the κ-CG/CL hydrogel has substantial potential for application in removing and recycling heavy metal ions from aqueous solutions.

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Application of Optimization Response Surface for the Adsorption of Methylene Blue Dye onto Zinc-coated Activated Carbon

Altıntıg,

Sarıcı,

Bozdag

et al. 2024

Environ Monit Assess

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Bamboo-Based Biofoam Adsorbents for the Adsorption of Cationic Pollutants in Wastewater: Methylene Blue and Cu(II)

Cited by 15 publications

References 74 publications

The Physical and Sound Absorption Property of Lightweight Rigid Polyurethane Composite Reinforced Bamboo Fiber for Roof Applications

The Physical and Sound Absorption Property of Lightweight Rigid Polyurethane Composite Reinforced Bamboo Fiber for Roof Applications

Adsorption of Pb2+ Ions from Aqueous Solution onto Porous Kappa-Carrageenan/Cellulose Hydrogels: Isotherm and Kinetics Study

Application of Optimization Response Surface for the Adsorption of Methylene Blue Dye onto Zinc-coated Activated Carbon

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