Improving Saline–Alkaline Soil and Ryegrass Growth with Coal Gangue Treatments DOI Creative Commons

Siqi Li,

Xingqiang Li,

Xiaolin Qiang

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(23), P. 3419 - 3419

Published: Dec. 5, 2024

Soil covering is a soil management technique used to address issues such as high alkalinity, nutrient deficiency, and low water-holding capacity in saline-alkali lands. Coal gangue, solid waste generated from coal mining, contains nutrients trace elements comparable those soil, making it promising material. This study investigates the effects mechanisms of gangue coverage on physicochemical properties enzyme activity, growth ryegrass. The experimental treatments comprised (1) three particle sizes (0-0.5 cm, 0.5-1 1-2 cm) (2) thicknesses (4 8 12 cm). results show that with 0-1 cm cover 8-12 saturated water content increased by 11.1% 17.23%, organic matter rose 4.99 13.64 mg/kg, total nitrogen 0.07 0.12 urease activity 0.56 0.64 μg/(d·g). Our analyses indicated an improvement porosity, reduction pH, increase urease, matter, collectively promoted ryegrass growth, similar impacts. Among treatments, size produced best results, increasing height 16.24 primarily due level porosity elevated activity. In conclusion, significantly improves enhances promotes growth.

Language: Английский

Research progress of resourceful and efficient utilization of coal gangue in the field of building materials DOI

Aiguo Wang,

Yaohui Pan,

Jun Zhao

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 99, P. 111526 - 111526

Published: Dec. 11, 2024

Language: Английский

Citations

5
The Encapsulation of Illite Powders with Al2(SO4)3·18H2O and Hydrophilic Copolymers: Accelerating and Toughening Cement Hydration Through the Proliferation of 54CaO·MgO·Al2O3·16SiO2 Clinker DOI Creative Commons
Zhiyuan Song,

Sidra Chaudhary,

Zainab Bibi

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(4), P. 283 - 283

Published: Feb. 13, 2025

Two hydrophilic copolymers containing functional groups such as carboxyl, amido, and sulfonic acid are synthesized using ammonium persulfate-catalyzed free radical polymerization in water. Aluminum sulfate is then introduced, resulting two polymer complexes that exhibit reduced cement setting times (initial, 1.16-2.44 min; final, 2.02-3.14 min) improved compressive (24 h, 5.81-7.25 MPa) flexural 2.80-2.99 strengths compared to pure aluminum sulfate-facilitated cementing 19.11 37.05 compressive, 24 5.51 MPa; flexural, 2.56 MPa). Following this, ball-milled illite powder added, the admixtures further display slightly prolonged 2.35-2.99 vs. 3.98-4.35 min), along with comparable (5.85-7.11 enhanced (3.92-5.83 Notably, a unique adhesive pozzolanic clinker, Ca54MgAl2Si16O90 (54CaO·MgO·Al2O3·16SiO2), emerges presence of illite-based admixtures, contributing mechanical strength development hydrated mortars. Although itself hydrophobic, coating facilitates its dispersion into gaps pores matrix during setting, thereby increasing strength. This work presents an interesting approach utilizing materials applications, which significant for reducing CO2 emissions production use.

Language: Английский

Citations

0
Research on the Mechanical Activation Mechanism of Coal Gangue and Its CO2 Mineralization Effect DOI Open Access
Lei Zhu, Chengyong Liu, Gang Duan

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2364 - 2364

Published: March 7, 2025

During the extraction and utilization of coal resources, a large amount CO2 coal-based solid wastes (CBSW), such as gangue, are generated. To reduce carbon waste emissions, an effective approach is to mineralize with CBSW then backfill mineralized materials into goaf area. However, efficient mineralization challenging due low reactivity gangue. this end, mechanical activation was used for modification mechanism gangue revealed from microcosmic perspective by dry powder laser particle size testing (DPLPST), X-ray diffractometer (XRD) analysis, Fourier-transform infrared spectrometer (FTIR) scanning electron microscopy (SEM). The results showed that compared unground average after 0.5 h, 1 1.5 h milling decreases 94.3%, 95%, 95.3%, respectively; additionally, amorphous structures increase, their edges corners gradually diminish. After pressure gangues different times, thermogravimetric (TG) analysis performed, effect mechanically activated explored. It found fixation capacity 1.0 increased 1.18%, 3.20%, 7.57%, respectively. Through XRD SEM, in follows: during process, alkali metal ions calcium magnesium anorthite muscovite leached participate reaction, resulting formation stable carbonates carbonate.

Language: Английский

Citations

0
Mechanical properties and damage evolution of graphene oxide enhanced coal-based solid waste grouting materials DOI
Aiwen Wang, Yang Wang, Yang Song

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 472, P. 140776 - 140776

Published: March 18, 2025

Language: Английский

Citations

0
A review of coal solid waste-based catalytic materials in wastewater treatment: Preparation and application DOI
Sheng Dong, Jinpeng Qiao, Chao Kang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132800 - 132800

Published: April 1, 2025

Language: Английский

Citations

0
Improving Saline–Alkaline Soil and Ryegrass Growth with Coal Gangue Treatments DOI Creative Commons

Siqi Li,

Xingqiang Li,

Xiaolin Qiang

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(23), P. 3419 - 3419

Published: Dec. 5, 2024

Soil covering is a soil management technique used to address issues such as high alkalinity, nutrient deficiency, and low water-holding capacity in saline-alkali lands. Coal gangue, solid waste generated from coal mining, contains nutrients trace elements comparable those soil, making it promising material. This study investigates the effects mechanisms of gangue coverage on physicochemical properties enzyme activity, growth ryegrass. The experimental treatments comprised (1) three particle sizes (0-0.5 cm, 0.5-1 1-2 cm) (2) thicknesses (4 8 12 cm). results show that with 0-1 cm cover 8-12 saturated water content increased by 11.1% 17.23%, organic matter rose 4.99 13.64 mg/kg, total nitrogen 0.07 0.12 urease activity 0.56 0.64 μg/(d·g). Our analyses indicated an improvement porosity, reduction pH, increase urease, matter, collectively promoted ryegrass growth, similar impacts. Among treatments, size produced best results, increasing height 16.24 primarily due level porosity elevated activity. In conclusion, significantly improves enhances promotes growth.

Language: Английский

Citations

1