One-step hydrothermal carbonization of amine modified black liquor and lignin for efficient Cr(VI) adsorption

Tian, Yuxin; Yin, Yanbo; Liu, Hua; Zhou, Haifeng

doi:10.1016/j.jwpe.2022.102583

Cited by 28 publications

(5 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Table 5, some studies show the effect of hydrochar on the adsorption of heavy metals. Amine-modified hydrochar synthesized from black liquor using hexamethylenediamine (HMDA) at hydrothermal temperatures of 150, 180, 200, and 220 °C, and a duration of 0.5 h exhibited a maximum adsorption capacity of Cr(VI) removal of 741.74 mg/g at 45 °C and pH 2 [80]. Hydrochar microspheres produced from glucose at 180 °C for 48 h enables highly selective separation of U(VI).…”

Section: Use Of Hydrochar For Heavy Metal Ionsmentioning

confidence: 99%

“…Hydrochar at a dose of 0.1% shows a maximum adsorption rate of Pb 2+ (79.86 mg/g), and hydrochar can be used to remove Pb 2+ from wastewater as it shows a maximum removal efficiency of 95.08% at 25 mg/L [87]. Additionally, sulfide-modified magnetic hydrochar (MHC-S4) was prepared by simultaneously supporting the synthesis of nanoparticles with Fe3O4 and grafting a sulfide-containing group onto a carboniferous water prepared by reacting with pinecone at 200 °C for 5 h. MHC-S4 can effectively adsorb Cd (II)/Pb (II) over a wide pH range and Amine-modified hydrochar synthesized from black liquor using hexamethylenediamine (HMDA) at hydrothermal temperatures of 150, 180, 200, and 220 • C, and a duration of 0.5 h exhibited a maximum adsorption capacity of Cr(VI) removal of 741.74 mg/g at 45 • C and pH 2 [80]. Hydrochar microspheres produced from glucose at 180 • C for 48 h enables highly selective separation of U(VI).…”

Section: Use Of Hydrochar For Heavy Metal Ionsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal Carbonization Technology for Wastewater Treatment under the “Dual Carbon” Goals: Current Status, Trends, and Challenges

Liu,

Xu,

Abou-Elwafa

et al. 2024

Water

View full text Add to dashboard Cite

Hydrothermal carbonization (HTC) technology transforms organic biomass components, such as cellulose and lignin, into valuable carbon materials, gases and inorganic salts through hydrolysis, degradation and polymerization, with significant advantages over traditional methods by reducing energy consumption, lowering pollutant emissions and enhancing carbonization efficiency. In the context of global climate change, HTC plays a critical role in water environment management by addressing industrial, agricultural, and domestic wastewater challenges. The application of HTC extends to wastewater treatment, where hydrochar effectively adsorbs heavy metals, organic compounds, and anions, thereby improving water quality. However, challenges remain, such as optimizing the process for diverse raw materials, managing economic costs, and addressing environmental and social impacts. Future research and policy support are essential for advancing HTC technology. By enhancing reaction mechanisms, developing catalysts, and promoting international cooperation, HTC can significantly contribute towards achieving carbon neutrality goals and fostering sustainable development.

show abstract

Section: Use Of Hydrochar For Heavy Metal Ionsmentioning

confidence: 99%

Section: Use Of Hydrochar For Heavy Metal Ionsmentioning

confidence: 99%

Hydrothermal Carbonization Technology for Wastewater Treatment under the “Dual Carbon” Goals: Current Status, Trends, and Challenges

Liu,

Xu,

Abou-Elwafa

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

“…Two signi cant peaks corresponding to Cr 2p 3/2 and Cr 2p 1/2 can be observed in the Cr 2p spectrum of N2PBC1-400-Cr, being deconvoluted into four regions of Cr( ) 2p 3/2 , Cr( ) 2p 3/2 as well as Cr(VI) 2p 1/2 and Cr(III) 2p 1/2 40 . The corresponding relative contents in Table S6 show that the content of Cr(III) is higher than that of Cr(VI), indicating that N2PBC1-400 successfully reduced Cr(VI) to Cr(III).…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Efficient adsorption on Cr(VI) and electrochemical application of N, P co-doped carbon spheres

Luo,

Xing,

Zhang

et al. 2023

Korean J. Chem. Eng.

View full text Add to dashboard Cite

In this study, nitrogen and phosphorus co-doped carbon sphere was synthesized and prepared by a twostep hydrothermal activation pyrolysis method using agricultural, in which the forestry waste walnut shells, urea, and phosphoric acid were used as carbon, nitrogen, and phosphorus sources, respectively, for the e cient treatment of heavy metals Cr(VI) in wastewater, and a supercapacitor with high capacitive performance was investigated on this basis. The adsorption capacity of the N, P co-doped carbon sphere (N2PBC1-400) was optimal for Cr(VI), and the abundant functional groups on the surface of the carbon spheres signi cantly promoted the adsorption and reduction of Cr(VI). The adsorption capacity of the carbon material was up to 100.55 mg/g at 318 K, and the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model were used to describe the adsorption process. Before and after adsorption, the material was applied to the electrode material of the supercapacitor, and the capacitive performance of the adsorbed material was satisfactory as well as the excellent cycling stability which 93% capacity retention even after 5000 cycles.

show abstract

“…This makes the CSp have a good adsorption capacity for Pb (II) (380.1 mg/g) and Cd (II) (100.8 mg/g). In order to improve the adsorption performance of hydrothermal carbon, some additives were added in the hydrothermal process to introduce functional groups such as carboxyl, hydroxyl, and nitrogen-contained on the surface of hydrothermal carbon to increase the chemical adsorption capacity [ 7 , 32 ]. Hemicelluloses may be hydrolyzed, dehydrated, and aromatized into carbon spheres at a very low temperature by adding sulfuric acid during the HTC process [ 33 ].…”

Section: Hydrochar As Adsorbents For Pollution Control From Wastewatermentioning

confidence: 99%

“…The maximum adsorption capacity of NHTC-SBS towards Cr (VI) reached 349.6 mg/g, which mainly relied on electrostatic attraction, reduction of Cr (VI) to Cr (III), and chelation. Tian et al successfully produced N-doped biochar from purified lignin (PL) and black liquor (BL) via a simple one-step HTC, and was applied in the adsorption of Cr (VI) [ 32 ]. The result showed that the maximum adsorption performance of N-BL-180 was 859.43 mg/g, whereas that of NPL-150 was 583.77 mg/g.…”

Section: Hydrochar As Adsorbents For Pollution Control From Wastewatermentioning

confidence: 99%

Biomass-Based Hydrothermal Carbons for the Contaminants Removal of Wastewater: A Mini-Review

Wang

et al. 2023

IJMS

View full text Add to dashboard Cite

The preparation of adsorbents with eco-friendly and high-efficiency characteristics is an important approach for pollutant removal, and can relieve the pressure of water shortage and environmental pollution. In recent studies, much attention has been paid to the potential of hydrothermal carbonization (HTC) from biomass, such as cellulose, hemicellulose, lignin, and agricultural waste for the preparation of adsorbents. Hereby, this paper summarizes the state of research on carbon adsorbents developed from various sources with HTC. The reaction mechanism of HTC, the different products, the modification of hydrochar to obtain activated carbon, and the treatment of heavy metal pollution and organic dyes from wastewater are reviewed. The maximum adsorption capacity of carbon from different biomass sources was also evaluated.

show abstract

One-step hydrothermal carbonization of amine modified black liquor and lignin for efficient Cr(VI) adsorption

Cited by 28 publications

References 58 publications

Hydrothermal Carbonization Technology for Wastewater Treatment under the “Dual Carbon” Goals: Current Status, Trends, and Challenges

Hydrothermal Carbonization Technology for Wastewater Treatment under the “Dual Carbon” Goals: Current Status, Trends, and Challenges

Efficient adsorption on Cr(VI) and electrochemical application of N, P co-doped carbon spheres

Biomass-Based Hydrothermal Carbons for the Contaminants Removal of Wastewater: A Mini-Review

Contact Info

Product

Resources

About