Surface modification of spent coffee ground using phosphoric acid for enhancement of methylene blue adsorption from aqueous solution

Article Chemistry, Physical

Adsorption mechanisms investigation of methylene blue on the (001) zeolite 4A surface in aqueous medium by computational approach and molecular dynamics

M. Khnifira et al.

Summary: Computational tools were used to study the adsorption behavior of cationic methylene blue on zeolite 4A, revealing that the protonated form of CMB is unstable and highly reactive.

APPLIED SURFACE SCIENCE (2022)

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Article Chemistry, Physical

A novel nanohybrid based on metal-organic framework MIL101-Cr/PANI/Ag for the adsorption of cationic methylene blue dye from aqueous solution

Kazem Karami et al.

Summary: A novel MIL101-Cr/PANI/Ag nanohybrid was synthesized and characterized, showing active performance in methylene blue adsorption. This nanohybrid could be applied in water treatment with high adsorption efficiency.

JOURNAL OF MOLECULAR STRUCTURE (2022)

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Article Chemistry, Multidisciplinary

Assessment of sulfonation in cornstalk for adsorption of metal-ions from seawater

Hee-Jeong Choi

Summary: The aim of this study was to adsorb Ca, K, Mg, and Na from seawater using sulfonated cornstalk. The results showed that surface modified cornstalk with sulfuric acid had higher ion exchange capacity and adsorption efficiency compared to non-sulfonated cornstalk. This is significant not only for recycling ligno-cellulosic waste, but also for adsorbing valuable resources from seawater.

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2022)

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Article Materials Science, Multidisciplinary

Efficient adsorption of methylene blue on hybrid structural phase of MoO3 nanostructures

Naresh Kumar et al.

Summary: Mixed phase molybdenum oxide nanocomposite was synthesized using an internal combustion method, and the influence of different nanoparticles on the adsorptive removal of methylene blue was investigated. Characterization techniques such as FTIR and FESEM were employed to confirm the dye adsorption mechanism over the adsorbent surfaces. The study demonstrates the potential of the synthesized nanocomposite for efficient dye adsorption and its application in sustainable water treatment technology.

MATERIALS CHEMISTRY AND PHYSICS (2022)

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Article Engineering, Multidisciplinary

Banana stem based activated carbon as a low-cost adsorbent for methylene blue removal: Isotherm, kinetics, and reusability

Erni Misran et al.

Summary: A low-cost activated carbon from banana stem (ACBS) was successfully used to remove methylene blue from wastewater. The ACBS had a high surface area and exhibited efficient removal of methylene blue, even at high initial concentrations. The adsorption data followed the Freundlich isotherm model and pseudo-second-order kinetics model. ACBS is environmentally friendly and can be used repeatedly.

ALEXANDRIA ENGINEERING JOURNAL (2022)

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Review Chemistry, Applied

Advances in nanocellulose-based materials as adsorbents of heavy metals and dyes

Aihua Qiao et al.

Summary: This review discusses the increasing application of nanocellulose-based materials as biosorbents for water pollutants treatment, highlighting surface modification, polymer grafting, hybrid composite fabrication, adsorption mechanisms, and regeneration methods. It also briefly describes the various forms of nanocellulose-based adsorbents with large-scale application.

CARBOHYDRATE POLYMERS (2021)

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Article Chemistry, Applied

Efficient removal of methylene blue using the mesoporous activated carbon obtained from mangosteen peel wastes: Kinetic, equilibrium, and thermodynamic studies

Zhe Zhang et al.

Summary: Activated carbon synthesized from thermally activated phosphoric acid-treated mangosteen peels shows excellent adsorption performance for methylene blue through physical adsorption. The optimal preparation conditions are a 1:3 impregnation ratio, activation for 60 minutes at 450 degrees Celsius.

MICROPOROUS AND MESOPOROUS MATERIALS (2021)

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Article Green & Sustainable Science & Technology

Efficient adsorption of Cr (VI) from aqueous environments by phosphoric acid activated eucalyptus biochar

Huiting Zeng et al.

Summary: The research demonstrates that eucalyptus activated carbon can effectively remove hexavalent chromium from water, with a significantly higher removal rate than eucalyptus carbon. The surface area of activated carbon increased significantly, and the adsorption process is influenced by multiple factors.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Chemistry, Physical

Preparation of well-developed mesoporous activated carbon fibers from plant pulp fibers and its adsorption of methylene blue from solution

B. Liu et al.

Summary: The structure and performance of mesoporous plant-based activated carbon fibers with paper structure prepared from plant pulp fibers using phosphoric acid activation were studied. Results show that the ACFs exhibit high mesoporous rate, large specific surface area, and relatively high methylene blue adsorption capacity.

CHEMICAL PHYSICS LETTERS (2021)

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Article Environmental Sciences

Pore volume upgrade of biochar from spent coffee grounds by sodium bicarbonate during torrefaction

Wei-Hsin Chen et al.

Summary: A novel approach for upgrading biochar pore volume at low temperatures using sodium bicarbonate as a green additive was developed. The treated biochar showed improved specific surface area, total pore volume, CO2 uptake capacity, higher heating value, and lower ignition temperature. These enhancements make it a potential substitute for coal as fuel, demonstrating its potential for biofuel production, biowaste reuse, and bioadsorbent applications in a circular economy.

CHEMOSPHERE (2021)

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Article Green & Sustainable Science & Technology

Sustainable and superhydrophobic spent coffee ground-derived holocellulose nanofibers foam for continuous oil/water separation

Congcan Shi et al.

Summary: The study successfully developed superhydrophobic foams from spent coffee grounds for oil-water separation, demonstrating excellent oil absorption capacity and separation efficiency.

SUSTAINABLE MATERIALS AND TECHNOLOGIES (2021)

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Review Green & Sustainable Science & Technology

A critical review of biosorption of dyes, heavy metals and metalloids from wastewater as an efficient and green process

A. M. Elgarahy et al.

Summary: Wastewater containing dyes, heavy metals, and metalloids poses significant environmental and public health threats, and conventional treatment methods are insufficient in removing them completely. Biosorption emerges as a promising green and cost-effective technology to tackle this issue, with the need for developing more bio-based adsorbents for better pollutant removal efficiency.

CLEANER ENGINEERING AND TECHNOLOGY (2021)

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Article Engineering, Environmental

Conversion of Spiky Sweetgum tree (Liquidambar styraciflua) Seeds as into Bio-adsorbent: Static and Dynamic Adsorption Assessment

Fangzhou Liu et al.

Summary: Various biomass materials have been explored as bioadsorbents for water treatment due to their natural abundance. In this study, the adsorption performances of sweetgum tree seeds for removing methylene blue and lead ions were evaluated. The findings indicate that the pristine spiky balls had higher adsorption capacities for both substances and followed different adsorption kinetics models. Additionally, isotherm analysis suggested the spiky balls may have a heterogeneous surface for multilayered adsorption with stronger interactions with methylene blue.

JOURNAL OF HAZARDOUS MATERIALS ADVANCES (2021)

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Article Environmental Sciences