Q1 Research Application · Frontier Focus

Enhanced adsorption for aqueous lead (II) by red mud-modified biochar via microwave-assisted hydrothermal carbonization and K2CO3 activation: Performance and mechanism

This Separation and Purification Technology paper (2025) is indexed as a Xianghu equipment application case for XH-300PE; key result: Specific surface area 591.91 m²/g.

View DOI Back to Library Chinese Solution
Paper ID 571
Application Focus Research application
Key Result Specific surface area 591.91 m²/g
Core Condition Temperature 160 °C / 105 °C / 700 °C
Paper ID
571
Journal
Separation and Purification Technology
Impact Factor
9
CAS Zone
Zone 1
Year
2025
DOI
10.1016/j.seppur.2025.131825
Equipment Model
XH-300PE
Affiliations
Shanxi University
Research Directions
Research application

Fact Snapshot

  • Paper: Enhanced adsorption for aqueous lead (II) by red mud-modified biochar via microwave-assisted hydrothermal carbonization and K2CO3 activation: Performance and mechanism
  • Equipment: XH-300PE
  • Source: Separation and Purification Technology, 2025
  • Research direction: Research application
  • Core conditions: Temperature 160 °C / 105 °C / 700 °C and Time 3 h / 24 h / 40 min
  • Key results: Specific surface area 591.91 m²/g, Specific surface area 591.91 m2/g, Equilibrium adsorption capacity 95%, and Removal 32.44%

Research Abstract

Enhanced adsorption for aqueous lead (II) by red mud-modified biochar via microwave-assisted hydrothermal carbonization and K2CO3 activation: Performance and mechanism was published in Separation and Purification Technology (2025) and is indexed as a Xianghu Q1 application case for XH-300PE. The source record connects it with Research application. Core operating conditions include Temperature 160 °C / 105 °C / 700 °C and Time 3 h / 24 h / 40 min. Key reported results include Specific surface area 591.91 m²/g, Specific surface area 591.91 m2/g, Equilibrium adsorption capacity 95%, and Removal 32.44%.

Research Background and Problem

The application context is Research application. The equipment metadata identifies XH-300PE, while the publication metadata records Separation and Purification Technology (2025). The affiliation record includes Shanxi University. The recorded DOI is 10.1016/j.seppur.2025.131825.

Equipment Use and Experimental Conditions

ItemParameter
Temperature160 °C / 105 °C / 700 °C
Time3 h / 24 h / 40 min

Key Result

Specific surface area 591.91 m²/g
Specific surface area 591.91 m2/g
Removal 32.44%
Removal 99.69%
MetricResult
Specific surface area591.91 m²/g
Specific surface area591.91 m2/g
Removal32.44%
Removal99.69%
Adsorption capacity350.28 mg/g
Equilibrium adsorption capacity95%

Evidence Details

Release-kinetics evidence

Release-kinetics evidence: source values include 1.0 g, 197.83 mg, R2 = 106.32, R2 = 128.95, R2 = 142.80. Entities: AMHC-C10R0, AMHC-C8R2, AMHC-C7R3, AMHC-C5R5.

Thermodynamic evidence

Thermodynamic evidence: source values include 200 mg, 20-500 mg, ΔG < 0. Entities: AMHC-C10R0, AMHC-C5R5.

Release-kinetics evidence

Release-kinetics evidence: source values include R2 = 591.91, R2 = 0.49. Entities: AMHC-C8R2.

Equipment and method evidence

CC and RM powders (5.0000 ± 0.0001 g in total) in a certain proportion and distilled water (50.0 mL) were mixed in a microwave hydrothermal synthesis device (XH-300PE, Beijing Xianghu Co., Ltd., China). Prior to the MHTC, the reactor was purged three times with N2, heated to 160 °C and maintained for 3 h.

Source evidence

MHC (1.5000 ± 0.0005 g) was blended with 1.5000 ± 0.0005 g K2CO3 in a tube furnace maintained at 700 °C for 40 min.

Additional source evidence

Additional source evidence: source values include 0.25 g, 1.5 g, 32.44%, 99.91%. Entities: AMHC-C5R5.

Source evidence

AMHC-C5R5 exhibited a maximum adsorption capacity of 350.28 mg/g at 45 °C, and this process was dominated by chemisorption.

Condition evidence

Temperature: 160 °C / 105 °C / 700 °C

Condition evidence

Time: 3 h / 24 h / 40 min

Additional source evidence

Additional source evidence: source values include 1.0 g, 99.69%.

Additional source evidence

Additional source evidence: source values include 240 min, 95%.

Mechanism / Method Highlights

  • Method context: Temperature 160 °C / 105 °C / 700 °C and Time 3 h / 24 h / 40 min.
  • Release-kinetics evidence: source values include 1.0 g, 197.83 mg, R2 = 106.32, R2 = 128.95, R2 = 142.80. Entities: AMHC-C10R0, AMHC-C8R2, AMHC-C7R3, AMHC-C5R5
  • Thermodynamic evidence: source values include 200 mg, 20-500 mg, ΔG < 0. Entities: AMHC-C10R0, AMHC-C5R5
  • Release-kinetics evidence: source values include R2 = 591.91, R2 = 0.49. Entities: AMHC-C8R2
  • Reported outcome: Specific surface area 591.91 m²/g, Specific surface area 591.91 m2/g, Equilibrium adsorption capacity 95%, and Removal 32.44%.

Application Value

  • Provides a peer-reviewed SoarNova / Xianghu Q1 application case for XH-300PE.
  • Supports English discovery around Research application.
  • Preserves quantitative result evidence: Specific surface area 591.91 m²/g, Specific surface area 591.91 m2/g, Equilibrium adsorption capacity 95%, and Removal 32.44%.
  • Maintains source-level evidence details: Release-kinetics evidence: source values include 1.0 g, 197.83 mg, R2 = 106.32, R2 = 128.95, R2 = 142.80. Entities: AMHC-C10R0, AMHC-C8R2, AMHC-C7R3, AMHC-C5R5, Thermodynamic evidence: source values include 200 mg, 20-500 mg, ΔG < 0. Entities: AMHC-C10R0, AMHC-C5R5, Release-kinetics evidence: source values include R2 = 591.91, R2 = 0.49. Entities: AMHC-C8R2, and Equipment and method evidence: CC and RM powders (5.0000 ± 0.0001 g in total) in a certain proportion and distilled water (50.0 mL) were mixed in a microwave hydrothermal synthesis device (XH-300PE, Beijing Xianghu Co., Ltd., China). Prior to the MHTC, the reactor was purged three times with N2, heated to 160 °C and maintained for 3 h.

Related Equipment

XH-300PE High-Pressure Ultrasonic-Microwave Collaborative Workstation
XH-300PE High-Pressure Ultrasonic-Microwave Collaborative Workstation

FAQ

Which Xianghu instrument is covered by this page?
The structured source records XH-300PE for this paper.
What research direction does this page support?
The source tags this paper under Research application.
Which publication does this case come from?
It comes from Separation and Purification Technology (2025), DOI 10.1016/j.seppur.2025.131825.
Citation
Enhanced adsorption for aqueous lead (II) by red mud-modified biochar via microwave-assisted hydrothermal carbonization and K2CO3 activation: Performance and mechanism
Separation and Purification Technology, 2025
DOI: 10.1016/j.seppur.2025.131825