Facile fabrication of iron-modified biochar as a renewable adsorbent for efficient siloxane (L2) removal

Meng, Ze-You; Hou, Xifeng; Liu, Yuheng; Ma, Zhen; Shen, Huizhen

doi:10.1016/j.jece.2021.105799

Cited by 25 publications

(11 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicated that physisorption is likely the dominant mechanism of adsorption. It appears that a monolayer adsorption process takes place on a homogeneous surface of the 3D-printed structures . Further analysis of the adsorption process using the IPD kinetic model (Figure c,d) revealed the presence of two distinguishable stages corresponding to the intraparticle diffusion and adsorption equilibrium stages with a high coefficient of determination.…”

Section: Resultsmentioning

confidence: 99%

“…It appears that a monolayer adsorption process takes place on a homogeneous surface of the 3D-printed structures. 37 Further analysis of the adsorption process using the IPD kinetic model (Figure 7c,d) revealed the presence of two distinguishable stages corresponding to the intraparticle diffusion and adsorption equilibrium stages with a high coefficient of determination. As a result, the adsorption kinetics of both MO and DR31 dyes on the 3D-MXOF structures were described by the two diffusion processes.…”

Section: Adsorption Performance Of the 3d-mxof Structurementioning

confidence: 99%

See 1 more Smart Citation

Self-Supported 3D-Printed Lattices Containing MXene/Metal–Organic Framework (MXOF) Composite as an Efficient Adsorbent for Wastewater Treatment

Far

Najafi

Hasanzadeh

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Metal–organic frameworks (MOFs) are well-known porous crystalline materials that have been used for the removal of organic pollutants from wastewater. To enhance the adsorption performance of these adsorbents and facilitate their recycling process, we propose a hybrid composite of an MXene/metal–organic framework (MXOF) decorated on a hierarchical and self-supported porous three-dimensional (3D) printed lattice structure (3D-MXOF). In this design, the porous MXOF composite extremely enhanced the specific surface area and synergistically promoted the dye removal efficiency of 3D-printed lattices. Scanning electron microscopy images indicated that the MXOF composite was uniformly decorated on a 3D-printed lattice structure without agglomeration. The resultant supported 3D-MXOF structures were evaluated for the adsorption of anionic dyes. The results revealed high adsorption performance (91.98% for methyl orange and 84.9% for direct red 31 dyes) and fast adsorption kinetics following a pseudo-first-order kinetic model. Moreover, the 3D-MXOF structure possesses a facile recycling process with sustainable adsorption performance after four consecutive adsorption–desorption cycles.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Adsorption Performance Of the 3d-mxof Structurementioning

confidence: 99%

Self-Supported 3D-Printed Lattices Containing MXene/Metal–Organic Framework (MXOF) Composite as an Efficient Adsorbent for Wastewater Treatment

Far

Najafi

Hasanzadeh

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The L2 dynamic adsorption performance onto the adsorbents was evaluated based on a previous study [ 34 ]. The relevant parameters were as follows: L2 inlet concentration ( C in ), 14.62 mg L −1 , gas flow rate ( V g ), 50 mL min −1 (superficial velocity of 100 cm min − 1 , cross-sectional area of 0.5 cm 2 ), and temperature ( T ), 20 °C.…”

Section: Methodsmentioning

confidence: 99%

Efficient Removal of Siloxane from Biogas by Using β-Cyclodextrin-Modified Reduced Graphene Oxide Aerogels

Zheng

Hou

et al. 2022

Nanomaterials

Self Cite

View full text Add to dashboard Cite

In this study, β-cyclodextrin-modified reduced graphene oxide aerogels (β-CD-rGOAs) were synthesized via a one-step hydrothermal method and were used to remove hexamethyldisiloxane (L2) from biogas. The β-CD-rGOAs were characterized by the Brunner–Emmet–Teller technique, using Fourier-transform infrared spectroscopy, Raman spectrometry, scanning electron microscopy (SEM), contact angle measurements, and X-ray diffraction. The results of the characterizations indicate that β-CD was grafted onto the surface of rGOAs as a cross-linking modifier. The β-CD-rGOA had a three-dimensional, cross-linked porous structure. The maximum breakthrough adsorption capacity of L2 on β-CD-rGOA at 273 K was 111.8 mg g−1. A low inlet concentration and bed temperature facilitated the adsorption of L2. Moreover, the β-CD-rGOA was regenerated by annealing at 80 °C, which renders this a promising material for removing L2 from biogas.

show abstract

“…Pristine biochar derived from coconut shells was found to be able to adsorb 223.3 mg/g of hexamethyldisiloxane, which was increased to 356.4 mg/g when biochar was loaded with 3.0% iron oxides. The adsorption capacity of biochar-loaded iron was effectively related to enhanced surface area and pore volume after metal-biochar incorporation (Meng et al 2021). As a result, biochar can adsorb siloxanes impurity, indicating the enormous potential of engineered biochars for biogas cleaning.…”

Section: Table 16mentioning

confidence: 99%

Integration of biogas systems into a carbon zero and hydrogen economy: a review

et al. 2022

View full text Add to dashboard Cite

The Ukraine conflict has put critical pressure on gas supplies and increased the price of fertilisers. As a consequence, biogas has gained remarkable attention as a local source of both gas for energy and biofertiliser for agriculture. Moreover, climate change-related damage incentivises all sectors to decarbonise and integrate sustainable practices. For instance, anaerobic digestion allows decarbonisation and optimal waste management. Incorporating a biogas system in each country would limit global warming to 2 °C. If suitable policies mechanisms are implemented, the biogas industry could reduce global greenhouse gas emissions by 3.29–4.36 gigatonnes carbon dioxide equivalent, which represent about 10–13% of global emissions. Here, we review the role of the biogas sector in capturing methane and mitigating carbon emissions associated with biogas outputs. Since biogas impurities can cause severe practical difficulties in biogas storing and gas grid delivering systems, we present upgrading technologies that remove or consume the carbon dioxide in raw biogas, to achieve a minimum of 95% methane content. We discuss the role of hydrogen-assisted biological biogas upgrading in carbon sequestration by converting carbon dioxide to biomethane via utilising hydrogen generated primarily through other renewable energy sources such as water electrolysis and photovoltaic solar facilities or wind turbines. This conceptual shift of 'power to gas' allows storing and utilising the excess of energy generated in grids. By converting carbon dioxide produced during anaerobic digestion into additional biomethane, biogas has the potential to meet 53% of the demand for fossil natural gas. We also evaluate the role of digestate from biogas systems in producing biochar, which can be used directly as a biofertiliser or indirectly as a biomethanation enhancement, upgrading, and cleaning material.

show abstract

Facile fabrication of iron-modified biochar as a renewable adsorbent for efficient siloxane (L2) removal

Cited by 25 publications

References 46 publications

Self-Supported 3D-Printed Lattices Containing MXene/Metal–Organic Framework (MXOF) Composite as an Efficient Adsorbent for Wastewater Treatment

Self-Supported 3D-Printed Lattices Containing MXene/Metal–Organic Framework (MXOF) Composite as an Efficient Adsorbent for Wastewater Treatment

Efficient Removal of Siloxane from Biogas by Using β-Cyclodextrin-Modified Reduced Graphene Oxide Aerogels

Integration of biogas systems into a carbon zero and hydrogen economy: a review

Contact Info

Product

Resources

About