Utilizing Ca3(PO4)2 and calcium superphosphate fertilizer for the passage of heavy metals in coal gangue: Mechanical insights and efficiency evaluation DOI Open Access
Hualin Zhang, Wenlong Bai,

Shaojing Tian

et al.

Environmental Engineering Research, Journal Year: 2024, Volume and Issue: 30(4), P. 240322 - 0

Published: Dec. 27, 2024

Coal gangue is a typical industrial waste, which will bring environmental challenges and resource depletion when piled up in large quantities, heavy metal pollution prominent problem. In this study, Ca3(PO4)2 calcium superphosphate fertilizer (CSF) were utilized to passivate coal at different levels, its passivation mechanism was discussed. The results show that both CSF can effectively reduce moderate or high levels of slight clean level. effect slightly better than Ca3(PO4)2. Through characterization before after simulation with Visual MINTEQ PHREEQC software, it found provide PO32-, while releases HPO3 –, ionized generate more finally forms insoluble soluble phosphate metals. Leaching experiments the treated samples contain obviously stable components, leaching risk lower untreated gangue. summary, method proves effectiveness fixing metals provides an effective for harmless treatment

Language: Английский

Optimizing sustainability and profitability: A multi-step approach to the synthesis of X-zeolite from blast furnace slag DOI
Wenjun Duan,

Rongmin Li,

Zhimei Wang

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 189, P. 1527 - 1537

Published: July 9, 2024

Language: Английский

Citations

12
Effect of low-carbon coal gangue on the stability and dissolved organic matter characteristics of co-pyrolysis biochar: insights on pyrolysis temperatures and minerals DOI Creative Commons
Ming Chen,

Yuan Sun,

Yaqi Peng

et al.

Carbon Research, Journal Year: 2025, Volume and Issue: 4(1)

Published: Feb. 3, 2025

Abstract The stability and dissolved organic matter (DOM) characteristics of biochar have an essential effect on carbon emission migration transformation pollutants. In this work, straw coal mine waste (coal gangue)-straw co-pyrolysis were produced at 300, 450, 600 °C. effects gangue biochar's stability, structure, the components biochar-derived DOM investigated. results showed that enhanced thermal chemical by 1.16%–8.25% 39.17%–68.36%, respectively. They also promoted aromatization process when pyrolysis temperature increased from 300 to 450 content was lower than 35.79%–55.52%, indicating inhibited release DOM. Moreover, humification degree low temperatures but accelerated decomposition aromatic molecules in high temperatures. proportion low-aromatic humic-like substance 1.28% 50.87% 1.44% 88.14% with increasing temperature. Thus, a synergistic controlling biochar. three primary minerals (SiO 2 , Al O 3 Fe ) is core mechanisms impacting characteristics. This work provides information for applications showing adding can boost modify molecular properties Graphical

Language: Английский

Citations

1
A Critical Review on CO2 Stripping/Carbon-Rich Solvent Regeneration: Process Intensification by Combined Sonication and Nanoparticles DOI
B. Ambedkar,

Mangaleswari Santhosh Kumar,

Shree Vidhya Ramamoorthy

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Language: Английский

Citations

0
Optimization of PEG-Modified Phenolic Foam for Enhanced CO2 Adsorption: A Micro-Meso Structural Approach DOI Creative Commons

Rezvaneh Eshraghi,

Mohammad Fasihi, Ahad Ghaemi

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104864 - 104864

Published: April 1, 2025

Language: Английский

Citations

0
In situ/operando spectroscopic studies of Cu-doped CeO2 on SiO2 derived from coal gangue for preferential CO oxidation DOI
Min Zou, Yang Liu,

Zewei Fu

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116822 - 116822

Published: April 1, 2025

Language: Английский

Citations

0
Why does CaX zeolite have such a high CO2 capture capacity and how is it affected by water? DOI Creative Commons
Nikola Drenchеv, Hristiyan A. Aleksandrov, Georgi N. Vayssilov

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 349, P. 127662 - 127662

Published: April 25, 2024

CO2 capture is important in solving one of the major current environmental problems, namely global warming. Among different approaches, adsorption considered most promising and CaX zeolite materials with highest capacity. However, knowledge on mechanism its interaction still not complete which hinders further optimization. In this work we report results a combined study by in-situ FTIR spectroscopy, measurements DFT calculations. It was found that at ambient temperature initially forms linear Ca2+−OCO species which, increasing equilibrium pressure, are first converted to Ca2+(CO2)2 then Ca2+(CO2)3 species. This reason for very high capacity material. Because practical importance, effect H2O processes also studied. Water suppress but softened formation mixed ligand Ca2+(CO2)x(H2O)y complexes (x + y = 2 or 3). agreement spectroscopic it material increases rise activation up 673 K due dehydration. Its value, 22.2 wt% 273 490 mbar, among values reported literature similar conditions.

Language: Английский

Citations

3
Synthesis of Low-Silicon X-Type Zeolite from Lithium Slag and Its Fast Exchange Performance of Calcium and Magnesium Ions DOI Open Access
Yu Wang,

Longbin Deng,

Lin Zhang

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(13), P. 3181 - 3181

Published: June 28, 2024

Without the addition of silicon and aluminum sources, a pure-phase KNaLSX zeolite was successfully synthesized from residue (lithium slag), which produced spodumene in production process lithium carbonate. The samples were characterized by an X-ray Diffractometer (XRD), Scanning Electron Microscope (SEM), Fluorescence Spectrometer (XRF), Thermogravimetric Differential Thermal Analysis (TG-DTA), Fourier Transform Infrared (FT-IR), N2 adsorption measurement. ion exchange capacity rate calcium magnesium ions measured as used for detergent builder, results compared with standard zeolites (KNaLSX 4A). experimental show that synthSynthesis characterization co-crystalline composite LSX/esized slag has SiO2/Al2O3 ratio 2.01 grain size 3~4 μm, is close to commercial sample 2.0. BET-specific surface area 715 m2/g, larger than low-silicon X-type (LSX) waste reported literature. constant 5 times 3 4A zeolite, respectively. also high 191 mgMgCO3/g, 2 302 mgCaCO3/g, meets first-grade builders China. work provides basis high-value resource utilization development builder rapid washing.

Language: Английский

Citations

3
Synthesis and characterization of zeolite X from granite stone sludge DOI Creative Commons
Parisa Mohammadı, Nourollah Mirghaffari,

Zahra Razavi

et al.

Next Materials, Journal Year: 2024, Volume and Issue: 6, P. 100466 - 100466

Published: Dec. 28, 2024

Language: Английский

Citations

1
Examination of the use of binderless zeolite blend as backfill materials to enhance CO2 adsorption in coal mine working face DOI Creative Commons
Ichhuy Ngo,

Liqiang Ma,

Mahabub Hasan Sajib

et al.

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 21, P. e03699 - e03699

Published: Aug. 28, 2024

Language: Английский

Citations

0
Utilizing Ca3(PO4)2 and calcium superphosphate fertilizer for the passage of heavy metals in coal gangue: Mechanical insights and efficiency evaluation DOI Open Access
Hualin Zhang, Wenlong Bai,

Shaojing Tian

et al.

Environmental Engineering Research, Journal Year: 2024, Volume and Issue: 30(4), P. 240322 - 0

Published: Dec. 27, 2024

Coal gangue is a typical industrial waste, which will bring environmental challenges and resource depletion when piled up in large quantities, heavy metal pollution prominent problem. In this study, Ca3(PO4)2 calcium superphosphate fertilizer (CSF) were utilized to passivate coal at different levels, its passivation mechanism was discussed. The results show that both CSF can effectively reduce moderate or high levels of slight clean level. effect slightly better than Ca3(PO4)2. Through characterization before after simulation with Visual MINTEQ PHREEQC software, it found provide PO32-, while releases HPO3 –, ionized generate more finally forms insoluble soluble phosphate metals. Leaching experiments the treated samples contain obviously stable components, leaching risk lower untreated gangue. summary, method proves effectiveness fixing metals provides an effective for harmless treatment

Language: Английский

Citations

0