Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114307 - 114307
Published: Sept. 1, 2024
Language: Английский
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
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
Ceramics International, Journal Year: 2024, Volume and Issue: 50(7), P. 11012 - 11021
Published: Jan. 1, 2024
Language: Английский
Citations
8
Heliyon, Journal Year: 2023, Volume and Issue: 9(9), P. e19167 - e19167
Published: Aug. 16, 2023
The frequent use of an industrial dye such as malachite green (MG) has caused major water body deterioration and is one the most pressing global challenges, demanding effective treatment techniques. To solve these issues, a simplistic method was developed to synthesize zinc-tungstate (ZnWO4) nanoparticles also dope surface matrix ZnWO4 using nonmetals boron (B), carbon (C), nitrogen (N) at different ratios for enhanced MG removal from wastewater. prepared nanomaterials were characterized by methods crystal structure composition, properties, morphology, microstructures, functional groups, elemental oxidation states. BET analysis revealed mesoporous with areas 30.740 m2/g ZnWO4, 38.513 ZnWO4@BCN, 37.368 ZnWO4@BCN/B, 39.325 ZnWO4@BCN/C, 45.436 ZnWO4@BCN/N nanocomposites. best accomplished pH (8), contact period (50 min), nanoadsorbent dose (0.8 g/L), initial concentration (20 mg/L), temperature (303 K). maximum adsorption capacities towards 218.645 251.758 mg/g, respectively. At equilibrium, Freundlich isotherm pseudo-second-order kinetic models fits experimental data on both nanoadsorbents. After eight cycles desorption, found be good removing MG, efficiencies 71.00 74.20%, Thermodynamic investigations further validated spontaneity endothermic nature process. All study findings confirm nanoadsorbents exceptional capability economic feasibility dye.
Language: Английский
Citations
21
Applied Sciences, Journal Year: 2024, Volume and Issue: 14(5), P. 1745 - 1745
Published: Feb. 21, 2024
Toxic heavy metals are ubiquitous in the aquatic environment and show a significant danger to human health. Carbon nanotubes have been extensively used treating contamination of groundwater due their porous multi-layer nature. Batch tests revealed that oxidized multiwalled carbon (O-MWCNTS) offer better removal Pb(II). The rate Pb(II) was 90.15% at pH 6 within 24 h, which ~58% more than Cd(II). decreased 55.59% for 16.68% Cd(II) when initial concentration Pb(II)/Cd(II) ranged from 5 15 mg·g−1. competitive about 60.46% 9.70% Langmuir model offered description adsorptive data both ions. And Qm 5.73 mg·g−1, 2.39 mg·g−1 single-icon system, while 7.11 with 0.78 water. thermodynamic further indicated activating energy 83.68 172.88 kJ·mol−1, respectively. Lead cadmium adsorbed on surface O-MWCNTS antagonistic system. Based XPS analyses, it concluded absorbed lead/cadmium species were (-COO)2Pb, (-COO)Pb(-O)/(-COO)2Cd, (-COO)Cd(-O). Additionally, they theoretical evidence supporting practicality using nanocomposite membranes as means remove lead.
Language: Английский
Citations
8
Materials Today Communications, Journal Year: 2024, Volume and Issue: 40, P. 110107 - 110107
Published: Aug. 1, 2024
Language: Английский
Citations
8
Advances in Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 335, P. 103338 - 103338
Published: Nov. 14, 2024
Efficient removal of heavy metals and other toxic metal pollutants from wastewater is essential to protect human health the surrounding vulnerable ecosystems. Therefore, significant efforts have been invested in developing practical sustainable tools address this issue, including high-performance adsorbents. In respect, within last few years, graphene-based aerogels/xerogels/cryogels (GBAs) emerged drawn attention as excellent materials for removing recovering harmful valuable different aqueous media. Such an upward trend mainly due features aerogel combined with properties graphene derivatives aerogel's network, GBAs' unique three-dimensional (3D) porous structure, high porosity, low density, large specific surface area, exceptional electron mobility, adjustable rich chemistry, remarkable mechanical features, tremendous stability. This review offers a comprehensive analysis fundamental aspects phenomena related application GBAs removal. Herein, we cover all types (bottom-up) synthesized GBAs, true microporous aerogels well 3D open-cell interconnected mesoporous macroporous aerogels, foams, sponges. Indeed, provide insights into understanding suitability such important by revealing mechanisms involved factors inducing controlling highly selective behavior these distinctive Besides conventional adsorptive pathways, critically analyzed ability electrochemically capture (i.e., electrosorption) their efficiency detoxification through reductive adsorption-reduction-readsorption). We also covered reusability aspect (GAs)-based adsorbents, which strongly linked outstanding stability efficient desorption captured metals. Furthermore, view numerous environmental benefits, development magnetically recoverable GAs highlighted. Moreover, shed light on potential scalable implementation evaluating performance continuous processes while highlighting versatility demonstrated remove multiple contaminants along Finally, provides readers accessible overview critical discussion major recent achievements regarding applications GAs-based adsorbents ions Along our recommendations suggestions future work new research directions opportunities, aims serve resource researchers field treatment inspire further progress towards next-generation expanding application.
Language: Английский
Citations
8
Materials Today Communications, Journal Year: 2024, Volume and Issue: 38, P. 108137 - 108137
Published: Jan. 21, 2024
Language: Английский
Citations
6
Revenue Journal Management and Entrepreneurship, Journal Year: 2024, Volume and Issue: 2(1), P. 01 - 13
Published: March 14, 2024
Sustainable development and the blue-green economy are intimately linked collaborate. Like other nations, Indonesia follows Blue-Green economic principles to reach Development Goals (SDGs). This study intends investigate Indonesia's capacity challenges in achieving (SDGs) through implementing concept suggest solutions address these barriers. has adopted a substantial approach attain sustainable objectives by policy. is primarily due country's status as growing archipelago with heightened susceptibility natural disasters that affect all facets of society, economy, advancement. crucial global geopolitical scene because its plentiful, untapped maritime resources. Implementing Blue Economy offers great chance accomplish 17 Goals. Prior studies focused solely on blue or green strategies for attaining goals Indonesia. research innovative it integrates idea. The discovered obstacles can be surmounted legislative, governance, legal, challenges. Efficiently developing public sector crucial. involves applying technology advancements, managing information effectively, coordinating stakeholders, seeking international collaborations, adopting best practices. It aims determine how indicators, specifically Indonesia, impact growth indicators such gross domestic product. Time series analysis utilized depict relationship between variables. ARDL model shows long-term equilibrium different measures Indicators have been seen influence Iraq. demonstrates fueled from 2014 2024.
Language: Английский
Citations
6
Heliyon, Journal Year: 2024, Volume and Issue: 10(11), P. e31669 - e31669
Published: May 22, 2024
The spread of heavy metal in water bodies, particularly lead (Pb), has occurred as a global threat to human existence. In this study, NiO NPs was prepared by coprecipitation approach using Hagenia abyssinica plant extract mediated reducing and template agent for the removal Pb from aqueous solution. X-ray crystallographic diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Brunauer-Emmett-Teller (BET) techniques were employed characterization NPs. efficacy adsorbent evaluated on Pb2+ varying adsorptive parameters such pH, Bio-NiO amount, interaction time, concentration. adsorption 99.99% at pH 0.06 g dose, 60 mg L-1 concentrations within 80 min contact time. higher efficiency is could be due surface area (151m2g-1). process best fitted with Freundlich isotherm pseudo-second order kinetic models, implying that it chemical heterogeneous surface. intensity (n) found 1/n<1 (0.47) indicating favorable maximum capacity 60.13 mgg-1. reusability studies confirmed synthesized bio-NiO an effective removing solution up five cycles.
Language: Английский
Citations
6