Utilizing Bentonite Clay as a Pozzolanic Material to Reduce Cement Consumption and Cost in Construction Industry DOI Open Access

Inayat Ullah Khan

Juniper Online Journal Material Science, Journal Year: 2023, Volume and Issue: 7(5)

Published: April 4, 2023

This research focuses on finding an alternative to expensive cement in the construction industry Pakistan by utilizing pozzolanic materials, specifically volcanic ash/bentonite clay.By replacing a portion of with bentonite (10%, 20%, 30%, and 40%), study demonstrates potential reduce net consumption cost while also contributing more durable concrete reducing energy greenhouse gas emissions.Physical properties such as setting time fineness were studied, compressive, flexural, split tensile strength mixes compared at 7 28 days curing.While decreased successive addition bentonite, rate reduction was much lower than days.The results validate feasibility developing low-cost using partial replacement for cement.

Language: Английский

Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals DOI Creative Commons
Glaydson S. dos Reis,

Julie Thivet,

Ewen Laisné

et al.

Chemical Engineering Science, Journal Year: 2023, Volume and Issue: 281, P. 119129 - 119129

Published: July 28, 2023

In this study, for the first time, a selenium-doped mesoporous biochar was prepared and efficiently employed sodium diclofenac reactive orange 16 dye adsorption. The characterization results indicated that selenium doping had remarkable impact on Biochar-Se morphological physicochemical structures. efficacy of developed samples (RO-16) (DCF) removals fully investigated. For both molecules (DCF RO-16), Liu's equilibrium model offered best fitness with maximum adsorption capacity values 355 mg g−1 DCF 538 RO-16 Biochar-Se. Multiple mechanisms including pore filling, π-π interaction, hydrogen bonding between DCF/RO-16 were involved in process. Se-nanoparticles formed metal–oxygen bonds, which boosted molecules. current work feasible approach development Se-doped adsorbent is incredibly effective treating wastewater.

Language: Английский

Citations

55
Shiitake spent mushroom substrate as a sustainable feedstock for developing highly efficient nitrogen-doped biochars for treatment of dye-contaminated water DOI Creative Commons
Alejandro Grimm, Glaydson S. dos Reis, Santosh Govind Khokarale

et al.

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 56, P. 104435 - 104435

Published: Oct. 20, 2023

Edible white-rot mushrooms are organisms that cultivated at an industrial scale using wood-based substrates. The mushroom industry has estimated annual production of 34 Mt edible mushrooms, and approximately 70 wt% the substrate is left as waste known spent (SMS). huge volumes SMS generated by farms hinder proper recycling, meaning combustion or open-field burning common disposal practices. This paper shows a concept could help reduce environmental impact industry. from cultivation shiitake was used carbon precursor for nitrogen-doped activated biochar to remove reactive orange-16 (RO-16) azo dye water, well contaminants two synthetic effluents real sewage water. Melamine nitrogen dopant phosphoric acid activating agent. Samples without addition melamine were comparison. doping/impregnation process carried out in one-step, followed pyrolysis 700 900 °C 1 h. BET, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) scanning electron microscopy (SEM) characterization biochars. specific surface area doped samples slightly lower, i.e., 1011 m2/g (SMS-700 °C), 810 + N), 1095 (SMS-900 943 N). spectroscopic analysis showed N-doped biochars had more defective structures than non-doped ones. XPS doping with led formation N-functionalities on particles. kinetics adsorption represented Avrami model. isotherms well-fitted Liu maximum capacities (qmax) RO-16 much higher biochars, 120 mg/g 216 168 393 effective removal produced good recyclability. work concludes valuable be N-doping helped improve performance great extent.

Language: Английский

Citations

25
Insight into Cu (II) adsorption on pyrochar and hydrochar resultant from Acacia Senegal waste for wastewater decontamination DOI
Tawasul Mohammed Ali Babeker,

Shaoyan Lv,

Jinglian Wu

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 356, P. 141881 - 141881

Published: April 3, 2024

Language: Английский

Citations

8
g-C3N4 modified natural low-grade dolomite-palygorskite: Removal capacity and adsorption mechanism for Gd3+ DOI

Bo Chen,

Yuankai Zhang,

Jiayi Duan

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 474, P. 134859 - 134859

Published: June 7, 2024

Language: Английский

Citations

7
Uptake the rare earth elements Nd, Ce, and La by a commercial diatomite: kinetics, equilibrium, thermodynamic and adsorption mechanism DOI
Glaydson S. dos Reis, Guilherme Luiz Dotto, Julien Vieillard

et al.

Journal of Molecular Liquids, Journal Year: 2023, Volume and Issue: 389, P. 122862 - 122862

Published: Aug. 18, 2023

Language: Английский

Citations

14
Design of silver-zinc-nickel spinel-ferrite mesoporous silica as a powerful and simply separable adsorbent for some textile dye removal DOI Creative Commons
Ehab A. Okba,

Moamen F. Rabea,

Mohamed Elsheikh

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: July 17, 2024

Abstract Silver-zinc-nickel spinel ferrite was prepared by the co-precipitation procedure with precise composition Ag 0.1 Zn 0.4 Ni 0.5 Fe 2 O 4 for bolstering pollutant removal effectiveness while upholding magnetic properties and then coated a mesoporous silica layer. The surface characteristics of @mSiO were confirmed using EDX, FT-IR, VSM, XRD, TEM, SEM, BET methods. modification Ag-Zn-Ni layer improves texture properties, where specific area average pore size rose to 180 m /g 3.15 nm, respectively. ferrite@mSiO has been utilized as an efficient adsorbent eliminating methyl green (MG) indigo carmine (IC) models cationic anionic dyes from wastewater, Studying pH, Pzc, dosage, dye concentration, temperature showed that MG carried out in alkaline media (pH = 12), acid medium 2) effective IC removal. Langmuir isotherm pseudo-second-order kinetics found be good fits adsorption data. Both adsorbed spontaneous, endothermic process. A possible mechanism proposed. effectively recovered reused.

Language: Английский

Citations

5
A high-performance 3D phosphorus-doped graphene oxide adsorbent for imipramine wastewater treatment DOI Creative Commons

Wan Ting Tee,

Jia En Yong,

Jasmine Chua

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 330, P. 125266 - 125266

Published: Oct. 4, 2023

The presence of pharmaceutical wastes in the environment has adversely impacted marine biodiversity due to their hazardous and bioaccumulation nature. This research focussed on development an effective phosphorus-doped 3D graphene oxide with bentonite carboxymethylcellulose crosslinking (PG/BCC) for removal imipramine wastewater. impacts single factor (adsorbent dosage, initial concentration, system temperature contact time) adsorption were examined by batch experiments while interactive multiple factors process optimisation investigated central composite design (CCD). greatest capacity evaluated was 458.95 mg/g at following CCD optimised operating parameters: 10 mg PG/BCC, 250 ppm 34 min time 321 K temperature. Langmuir model described well equilibrium whilst pseudo-second-order correlated closely kinetic data. imipramine-PG/BCC spontaneous (-19.235 −27.583 kJ/mol) endothermic (1.230 14.562 as from thermodynamic modelling. Characterisation PG/BCC various microscopy spectroscopy analyses validated incorporation adsorbent. Regeneration used proven be highly feasible methanol eluent. Conclusively, findings strongly advocate a sustainable graphene-based adsorbent separation

Language: Английский

Citations

12
Diclofenac sodium drug adsorption isotherm on carbon xerogels via an advanced two layers model with two energies DOI
Ismahene Ben Khemis, Fatma Aouaini, Salah Knani

et al.

Materials Chemistry and Physics, Journal Year: 2023, Volume and Issue: 312, P. 128620 - 128620

Published: Nov. 3, 2023

Language: Английский

Citations

11
Neodymium adsorption from aqueous solution by β-cyclodextrin nanosponges and a polymer valorized from potato peels waste: experiments and conventional and statistical physics interpretations DOI

Sonia Jemli,

Yasmin Vieira, Guilherme Luiz Dotto

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(13), P. 19974 - 19985

Published: Feb. 17, 2024

Language: Английский

Citations

4
Rare Earth Element Adsorption from Water Using Alkali-Activated Waste Fly Ash DOI Open Access

Tijana Radojičić,

Katarina Trivunac, Marija Vukčević

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 699 - 699

Published: Feb. 5, 2025

As new technologies are developed, the demand for rare earth elements (REEs) has increased, despite limited awareness of their significant impact on people and environment. In this study, waste fly ash was used as a precursor to synthesize inorganic aluminosilicate polymers by adding an activator alumina silica compounds ash. Due structure adsorption potential, application removal selected REEs (Gd3+, Y3+, Sc3+) from water been investigated. A decrease in intensity quartz peak at 2θ 26.6° XRD spectrum disappearance albite mullite peaks due dissolution during alkaline activation both modified samples were observed. The appearance 29.3° 39.3° corresponding calcite sample indicates presence wood shifting band DRIFT 1030 cm−1 spectra corresponds vibrations Al-O Si-O bonds formation polymeric network (Si-O-Si or Si-O-Al). According pHPZC values, thermodynamic kinetic parameters, chemical composition, presumed mechanism REE is chemisorption ion exchange. highest efficiencies (up 95%) all examined single mixed solutions obtained alkali-activated mixture results research expanding knowledge about environment, reduction modification, potential subsequent use construction additives.

Language: Английский

Citations

0