Agriculture By -Products Wastes as Low-Cost Bio-Sorbents for Heavy Metals Removal from Industrial Waste Stream, Short Review DOI Open Access
Mohamed A. Habib,

Inas Abd Elmoaty Mohamed

Published: Dec. 28, 2023

ABSTRACT Heavy metals have been classified as dangerous environmental pollutants. Interest in feasible ways to reduce heavy pollution is a noble goal. Adsorption an effective method based on its effectiveness and low- cost. Nowadays, low-cost bio-sorbents utilized replace costly expensive adsorbents. Rich cellulose materials are metal adsorbents, their performance can be enhanced via chemical modification. The present work reviews the steady progress utilization of agriculture by-product wastes bio-sorbent. unique advantages these by-products such renewability, abundance, simple processing, low cost, justifier this work. results confirm that chemically treated agro-wastes exhibit high- removal efficiency (reaches 95% most cases). adsorption isotherm studies indicate concentration ions has significant effect process. Freundlich model provides physical bio-sorbent surface. Langmuir offers estimate different factors kinetics offer idea reaction pathways including mechanism ion removal. Applying pseudo-first-order pseudo-second-order models describes kinetics. This information developing strategies remove using agro-waste. data confirmed modification parameter feasibility cellulosic should given attention encouraged.

Language: Английский

Rosa damascena waste as biosorbent for co-existing pollutants removal: Fixed-bed column study and ANN modeling DOI
Batool Fatima, Tonni Agustiono Kurniawan, Ayesha Mohyuddin

et al.

Chemical Engineering Science, Journal Year: 2024, Volume and Issue: 293, P. 120057 - 120057

Published: March 25, 2024

Language: Английский

Citations

16
Adsorption of Brilliant Green Dye onto a Mercerized Biosorbent: Kinetic, Thermodynamic, and Molecular Docking Studies DOI Creative Commons
Andra-Cristina Enache, Corneliu Cojocaru, Petrişor Samoilă

et al.

Molecules, Journal Year: 2023, Volume and Issue: 28(10), P. 4129 - 4129

Published: May 16, 2023

This study reports the valorization of pistachio shell agricultural waste, aiming to develop an eco-friendly and cost-effective biosorbent for cationic brilliant green (BG) dye adsorption from aqueous media. Pistachio shells were mercerized in alkaline environment, resulting treated adsorbent (PSNaOH). The morphological structural features analyzed using scanning electron microscopy, Fourier transform infrared spectroscopy, polarized light microscopy. pseudo-first-order (PFO) kinetic model best described kinetics BG onto PSNaOH biosorbents. In turn, equilibrium data fitted Sips isotherm model. maximum capacity decreased with temperature (from 52.42 mg/g at 300 K 46.42 330 K). parameters indicated improved affinity between surface molecules lower temperatures (300 thermodynamic estimated on basis two approaches a spontaneous (ΔG < 0) exothermic (ΔH process. design experiments (DoE) response methodology (RSM) employed establish optimal conditions (sorbent dose (SD) = 4.0 g/L initial concentration (C0) 10.1 mg/L), yielding removal efficiency 98.78%. Molecular docking simulations performed disclose intermolecular interactions lignocellulose-based adsorbent.

Language: Английский

Citations

26
Revealing the Combined Effect of Active Sites and Intra-Particle Diffusion on Adsorption Mechanism of Methylene Blue on Activated Red-Pulp Pomelo Peel Biochar DOI Creative Commons
Fang Wei,

Shenglong Jin,

Chunyi Yao

et al.

Molecules, Journal Year: 2023, Volume and Issue: 28(11), P. 4426 - 4426

Published: May 29, 2023

Phosphoric acid-activated biochar has been proven to be a promising adsorbent for pollutant removal in an aqueous solution. It is urgent understand how surface adsorption and intra-particle diffusion synergistically contribute the kinetic process of dyes. In this work, we prepared series PPC adsorbents (PPCs) from red-pulp pomelo peel under different pyrolysis temperatures (150–350 °C), which have broad specific area range 3.065 m2/g 1274.577 m2/g. The active sites on PPCs shown change laws decreasing hydroxyl groups increasing phosphate ester occurring as temperature rises. Both reaction models (PFO PSO models) (intra-particle applied simulate experimental data verify hypothesis deduced Elovich model. PPC-300 exhibits highest capacity MB (423 mg/g) given conditions. Due its large quantities external internal surfaces (1274.577 m2/g), fast equilibrium can achieved within 60 min (with initial concentration 100 ppm). PPC-350 also exhibit intra-particle-diffusion-controlled with low (100 ppm) or at very beginning final stage high (300 40 °C, considering that likely hindered by adsorbate molecules through pore channels middle these cases.

Language: Английский

Citations

14
Fluoro-hydroxyapatite/chitosan composites as an eco-friendly adsorbent for direct red 23 dye removal: Optimization through response surface methodology DOI Creative Commons
Aghilas Brahmi, Maissa Agsοus, Bachir Nadir Benkhaoula

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1321, P. 140212 - 140212

Published: Sept. 27, 2024

Language: Английский

Citations

5
Captivating actions of pomological crops waste as biosorbents for environmental remediation: a comprehensive review DOI
Sunny Sharma, Vandana Thakur, Vishal Rana

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 14, 2024

Language: Английский

Citations

4
Nano-adsorbents obtained from walnut and almond shells for the effective removal of aflatoxin B1 DOI
Muhammad Asif Asghar, Muhammad Zeeshan,

Muhammad Anas Siddiqui

et al.

Biomass Conversion and Biorefinery, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Language: Английский

Citations

0
Efficient Removal of Cationic Micro-Pollutant Using Sodium-Linked Mesoporous Adsorbent: Characterisation, Kinetic and Isotherm Studies DOI
Asma Boudaoud,

C. Ad,

Mebrouk Djedid

et al.

Russian Journal of Physical Chemistry A, Journal Year: 2025, Volume and Issue: 99(4), P. 727 - 739

Published: April 1, 2025

Language: Английский

Citations

0
Enhanced bio-adsorbent derived from turnip leaves for crystal violet removal in aqueous solutions: experimental investigation, characterization, and machine learning modeling DOI

Dounya Kaboub,

Hinda Khelili,

Messaoud Guellal

et al.

International Journal of Chemical Reactor Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract The consumption of vegetables generates a lot waste, allowing their use as biomass. biosorbent based on turnip leaves were prepared; they processed in the raw state (TL) and activated with H 3 PO 4 (TLA), then tested to remove Crystal Violet dye CV from aqueous solutions. Adsorbents characterized using (FTIR), (SEM), (XRD), (TGA) pH PZC , revealing that functional groups OH, C-H, C=O C-O-C mainly responsible for adsorption CV. Scanning electron microscope (SEM) imaging revealed cellulose fibers multicellular structure initially linked lignin hemicellulose, which dissociated after chemical treatment, XRD analysis confirmed amorphous nature structure, attributed presence hemicellulose. kinetic study showed best suited models describe experimental data pseudo-second-order (PSO) model TLA TL. isotherms different followed Sips isotherm maximum capacity (qmax) 635.54 mg/g TL 621.76 TLA. optimal conditions found be an adsorbent mass 20 mg, temperature 25 °C. concentration 10 mg/L respective contact times 150 min 120 TLA, leading elimination yields 92.60 % 97.56 %. mechanism could explained by electrostatic interactions between negatively charged surface positively group dye. A thermodynamic was carried out process solutions this exothermic spontaneous due approximate values ΔH (−25.26 −20.69 TLA) ΔG. predictive multi-component system studied Support Vector Machine (SVM) model. Two SVM approaches developed compared. first involved method integrated optimization algorithm, while second used more recent efficient method, Dragonfly (DA) conjunction method. evaluation accuracy three commonly statistical measures: mean squared error (RMSE), coefficient determination (R2) correlation (R). included five important variables, 136 observations: weight (TL or TLA), initial (c 0 mg/L), dose foliar waste (in time minutes) final (Cf). programming MATLAB software. results demonstrated DA-SVM optimized RBF-Gaussian kernel function had excellent prediction ability, R2 0.997, R 0.998 RMSE 1.0809.

Language: Английский

Citations

0
Magnetic Ionotropic Hydrogels Based on Carboxymethyl Cellulose for Aqueous Pollution Mitigation DOI Creative Commons
Andra-Cristina Enache, Ionela Grecu, Petrişor Samoilă

et al.

Gels, Journal Year: 2023, Volume and Issue: 9(5), P. 358 - 358

Published: April 24, 2023

In this work, stabilized ionotropic hydrogels were designed using sodium carboxymethyl cellulose (CMC) and assessed as inexpensive sorbents for hazardous chemicals (e.g., Methylene Blue, MB) from contaminated wastewaters. order to increase the adsorption capacity of hydrogelated matrix facilitate its magnetic separation aqueous solutions, dodecyl sulfate (SDS) manganese ferrite (MnFe2O4) introduced into polymer framework. The morphological, structural, elemental, properties adsorbents (in form beads) scanning electron microscopy (SEM), energy-dispersive X-ray analysis, Fourier-transform infrared spectroscopy (FTIR), a vibrating-sample magnetometer (VSM). beads with best performance subjected kinetic isotherm studies. PFO model describes kinetics. A homogeneous monolayer system was predicted by Langmuir model, registering maximum 234 mg/g at 300 K. calculated thermodynamic parameter values indicated that investigated processes both spontaneous (ΔG < 0) exothermic (ΔH 0). used sorbent can be recovered after immersion in acetone (93% desorption efficiency) re-used MB adsorption. addition, molecular docking simulations disclosed aspects mechanism intermolecular interaction between CMC detailing contributions van der Waals (physical) Coulomb (electrostatic) forces.

Language: Английский

Citations

8
Properties of Eco-Friendly Composites Based on Post-Consumer Recycled Resin Filled with Walnut Shell Powder DOI Open Access
Przemysław Pączkowski

Polymers, Journal Year: 2023, Volume and Issue: 15(22), P. 4389 - 4389

Published: Nov. 12, 2023

Increased demand for environmentally friendly materials resulted in a worldwide interest manufacturing composite from agricultural wastes. Thus, this paper presents the results of research on synthesis eco-friendly composites and their properties. For preparation, unsaturated polyester resin based post-consumer recycled poly (ethylene terephthalate) was filled with walnut (Júglans régia L.) shell powder. After filler incorporation, deterioration gloss mechanical properties were observed. The flexural strength modulus are significantly affected by amount. Distilled water, 1% sodium hydroxide, toluene, acetone used as solvents chemical resistance test. Changes to structure after 49 days immersion investigated. water has no significant effect pure resin, but its composites, plasticizing show that all specimens toward toluene. In acetone, shrink fall into pieces, most destructive is an alkaline environment. test, huge increase mass

Language: Английский

Citations

8