Modeling and simulation of Khat waste fast pyrolysis for energy recovery DOI Creative Commons
Geleta Afessa Moreda,

Sorome Deresa Tolasa,

Debela Alema Teklemariyem

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 10(2), P. e24176 - e24176

Published: Jan. 1, 2024

Bioenergy is now recognized to be capable of providing the vast majority predicted future renewable energy supply. Biomass currently considered a common and commonly used source. This study depends upon investigation khat waste using Aspen Plus software, which required for creating environmentally friendly sources improving our access economic sustainability. The outcome understand characteristics pyrolysis process without conducting time-consuming, expensive, complex procedure. results will useful in determining best feedstock formation biofuel. software simulates several ash-free organic components, including carbon, oxygen, nitrogen, hydrogen, sulfur, with like 45.72 % 5.84 0.43 38.56 oxygen. production biofuel affected by processing parameters such as temperature total mass flow rate. During reactions same but different temperatures, bio-oil declined from 600 °C 800 °C, while maximum gas emission climbed quickly biochar reduced. In addition, it was recovered Khat proved have an efficiency 80.75 net capacity 134.25 kW. High heating value (HHV) can obtained 19.38 MJ/kg, low (LHV) 18.12 MJ/kg. We been able realize Institute Gas Technology formula based on ultimate analysis. show that produces more oil than other wastes. As result, all naturally occurring usually contains less nitrogen no sulfur when fuel, air pollutant reducing protecting environment.

Language: Английский

Green synthesis of iron oxide nanoparticles by Taguchi design of experiment method for effective adsorption of methylene blue and methyl orange from textile wastewater DOI Creative Commons

Chijioke Alex Mbachu,

Akinpelu Kamoru Babayemi, Titus Chinedu Egbosiuba

et al.

Results in Engineering, Journal Year: 2023, Volume and Issue: 19, P. 101198 - 101198

Published: June 1, 2023

Since the beginning of industrial revolution, uncontrolled discharge wastewater from textile and dyeing industries into water bodies is environmentally challenging to humans ecosystem. Using Cola nitida (CN) leaves extract, Taguchi optimization method was successfully applied achieve green synthesis iron oxide nanoparticles (CN–Fe2O3NPs). Textural properties, nature surface functional groups, crystalline structure morphology CN–Fe2O3NPs were studied. The performance tested for methylene blue (MB) methyl orange (MO) removal wastewater. optimal area 125.31 m2/g achieved using CN extract volume (10 mL), precursor concentration (2 M), contact time (30 min) calcination temperature (600 °C). Overall, had highest effect than other parameters. characterization revealed presence hematite with Fe–O, Fe–O–Fe groups a regular-shaped porous material. Furthermore, adsorption capacity 530.406 527.835 mg/g obtained MB MO within 60 min nanoadsorbent dosage (25 mg/L), initial dye (100 mg/L) (50 reusability stability successful reuse after six cycles without any damage as corroborated by fourier transform infrared (FTIR) spectroscopy. experimental data suitably fitted Langmuir isotherm pseudo-second-order kinetic models denoting chemisorption monolayer process. thermodynamic parameters indicate an endothermic spontaneous Hence, high separation effectiveness against molecules good great potential synthesized in purification.

Language: Английский

Citations

100
Isotherm, kinetics, thermodynamics, recyclability and mechanism of ultrasonic assisted adsorption of methylene blue and lead (II) ions using green synthesized nickel oxide nanoparticles DOI

Dominic Chukwu Onu,

Akinpelu Kamoru Babayemi, Titus Chinedu Egbosiuba

et al.

Environmental Nanotechnology Monitoring & Management, Journal Year: 2023, Volume and Issue: 20, P. 100818 - 100818

Published: April 1, 2023

Language: Английский

Citations

53
Synthesis optimization and adsorption modeling of biochar for pollutant removal via machine learning DOI Creative Commons
Wentao Zhang, Ronghua Chen, Jie Li

et al.

Biochar, Journal Year: 2023, Volume and Issue: 5(1)

Published: April 23, 2023

Abstract Due to large specific surface area, abundant functional groups and low cost, biochar is widely used for pollutant removal. The adsorption performance of related synthesis parameters. But the influence factor numerous, traditional experimental enumeration powerless. In recent years, machine learning has been gradually employed biochar, but there no comprehensive review on whole process regulation adsorbents, covering optimization modeling. This article systematically summarized application in adsorbents from perspective all-round first time, including modeling adsorbents. Firstly, overview was introduced. Then, latest advances removal were summarized, prediction yield physicochemical properties, optimal synthetic conditions economic cost. And by reviewed, efficiency, revelation mechanism. General guidelines whole-process presented. Finally, existing problems future perspectives put forward. We hope that this can promote integration thus light up industrialization biochar. Graphical

Language: Английский

Citations

51
Isotherm, kinetics, thermodynamics and mechanism of metal ions adsorption from electroplating wastewater using treated and functionalized carbon nanotubes DOI

Ambali Saka Abdulkareem,

Wasiu Abidemi Hamzat,

Jimoh Oladejo Tijani

et al.

Journal of environmental chemical engineering, Journal Year: 2022, Volume and Issue: 11(1), P. 109180 - 109180

Published: Dec. 22, 2022

Language: Английский

Citations

69
Column adsorption of biological oxygen demand, chemical oxygen demand and total organic carbon from wastewater by magnetite nanoparticles-zeolite A composite DOI Creative Commons
A. S. Kovo,

Sherifat Alaya-Ibrahim,

Ambali Saka Abdulkareem

et al.

Heliyon, Journal Year: 2023, Volume and Issue: 9(2), P. e13095 - e13095

Published: Jan. 25, 2023

Herein, magnetite nanoparticles (NPs), zeolite A and magnetite-zeolite (MAGZA) composite was developed by green methods. The produced nanomaterials were characterized the effect of process parameters such as flow rate, adsorbent bed height adsorbate inlet concentration evaluated for removal biological oxygen demand (BOD), chemical (COD) total organic carbon (TOC) in a column. characterization results demonstrated successful synthesis NPs, MAGZA composite. performance fixed-bed column superior to NPs. parametric influence indicates that an increase decrease rate improved adsorption maximum at (4 mL/min), (5 cm) (10 mg/L). Under these conditions, highest percent BOD, COD TOC 99.96, 99.88 99.87%. Thomas Yoon-Nelson's model suitably fitted breakthrough curves. After five reusability cycles, BOD (76.5%), (55.5%) (64.2%). effectively removed from textile wastewater continuous operating mode.

Language: Английский

Citations

40
Biomass Waste Conversion Technologies and Its Application for Sustainable Environmental Development—A Review DOI Creative Commons

Ghenwa Kataya,

David Cornu, Mikhaël Bechelany

et al.

Agronomy, Journal Year: 2023, Volume and Issue: 13(11), P. 2833 - 2833

Published: Nov. 17, 2023

With the global population continuing to increase, demand for food and energy has escalated, resulting in severe environmental pressures. Traditional methods of production have left a significant footprint on environment, primarily due emission greenhouse gases notable surge waste production. Nevertheless, scientists recently focused developing sustainable solutions by managing biomass converting it into useful products. Various conversion technologies, including pyrolysis, gasification, fermentation, emerged transform materials valuable commodities like biofuels, fertilizers, chemicals. These technologies present an alternative conventional decrease reliance non-renewable resources. Furthermore, by-products generated through conversion, such as biochar, possess utility soil amendments. This review emphasizes potential providing management, production, reducing negative impacts while agricultural use. The focus is Lebanon, which facing crisis, with aim encourage promote practices highlighting different green management technologies. Focusing application biochar soil, our goal provide cost-effective eco-friendly various challenges Lebanon. includes using from amendment boost crop yields, remediate pollution, reduce drought stress, address other related issues.

Language: Английский

Citations

30
Fabrication of biogenic carbon-based materials from coconut husk for the eradication of dye DOI
Savita Chaudhary, Sandeep Goyal, Ahmad Umar

et al.

Chemosphere, Journal Year: 2023, Volume and Issue: 340, P. 139823 - 139823

Published: Aug. 14, 2023

Language: Английский

Citations

24
A review on investigating the effect of solvent on the synthesis, morphology, shape and size of nanostructures DOI

Tahereh Gholami,

Hooman Seifi,

Elmuez A. Dawi

et al.

Materials Science and Engineering B, Journal Year: 2024, Volume and Issue: 304, P. 117370 - 117370

Published: April 14, 2024

Language: Английский

Citations

11
Fabrication of cellulose nanocrystals/carboxymethyl cellulose/zeolite membranes for methylene blue dye removal: understanding factors, adsorption kinetics, and thermodynamic isotherms DOI Creative Commons

Mostafa Ahmed Ibrahim,

Ahmed Salama, Fouad Zahran

et al.

Frontiers in Chemistry, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 2, 2024

This study introduces environmentally-friendly nanocellulose-based membranes for AZO dye (methylene blue, MB) removal from wastewater. These membranes, made of cellulose nanocrystals (CNCs), carboxymethyl (CMC), zeolite, and citric acid, aim to offer eco-friendly water treatment solutions. CNCs, obtained sugarcane bagasse, act as the foundational material membranes. The aims investigate both composition (CMC/CNC/zeolite/citric acid) critical adsorption factors (initial MB concentration, contact time, temperature, pH) that impact dye. After systematic experimentation, optimal membrane is identified 60% CNC, 15% CMC, 20% zeolites, 5% acid. achieved a 79.9% efficiency 38.3 mg/g capacity at pH 7. optimized exhibited enhanced under specific conditions, including 50 mg adsorbent mass, ppm mL solution volume, 120-min temperature 25°C. Increasing neutral alkaline enhances 94.5%, with rising 76.5 mg/g. extended mechanisms, revealing chemisorption pseudo-second-order kinetics. Chemical thermodynamic experiments determine Freundlich isotherm apt model on surface. In conclusion, this successfully develops efficient removal, contributing sustainable technologies environmental preservation efforts.

Language: Английский

Citations

10
Equilibrium, kinetic, and thermodynamic study of Direct Yellow 12 dye adsorption by biomass-derived porous graphitic activated carbon DOI Creative Commons

Y. Subba Reddy,

T. Jaison Jose,

B. Dinesh

et al.

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: March 4, 2024

Abstract Competent treatment techniques were explored to curb the environmental pollution of dye-laden wastewater. In current study, eucalyptus biomass contemplated as agricultural waste is translated into graphitic activated carbon (EPGAC) using ZnCl 2 at 600 °C in N atmosphere. The present investigation illustrated awareness about nature EPGAC’s dye elimination by employing Direct Yellow 12 (DY12) a model dye. EPGAC was characterized multiple characterization tools such Fourier transform infrared spectroscopy (FTIR), Boehm titrations, pH zpc , X-ray diffraction (XRD), Raman, field emission scanning electron microscopy (FESEM), energy dispersive analysis (EDX), high-resolution transmission (HRTEM), and Brunauer-Emmett-Teller (BET) surface area techniques. Electron micrographs disclosed availability high pore density for adsorption DY12 dyes. BJH reported distribution mesopores having 3 nm diameter on surface. Further, available per gram adsorbent estimated 178.35 m BET analysis. XRD Raman’s data revealed EPGAC. Influences parameters mass, initial concentration, contact time, solution pH, temperature eviction examined achieve deeper insight mechanism. optimum dose found be 0.15 g. equilibrium attained 120 min Pseudo-second-order kinetics entirely relates perfect fit associated with investigational results. aptness relevant Langmuir isotherm eventually recommends maximum unilayer capacity 42.01 mg/g Thermodynamic studies further reveal spontaneous, endothermic, chemisorption adsorption. Adsorbent viability established through stability recyclability carried out up 5 run cycles g Adsorption mechanisms explained considering hydrogen bonding, π-π interactions, electrostatic ultimately confirming tendency displayed industrial

Language: Английский

Citations

10