Strong Adsorption of Phosphorus by ZnAl-LDO-Activated Banana Biochar: An Analysis of Adsorption Efficiency, Thermodynamics, and Internal Mechanisms

Li, Anyu; Deng, Hua; Wu, Yuqing; Ye, Chenghui; Jiang, Yanhong

doi:10.1021/acsomega.0c05674

Cited by 21 publications

(10 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 2 d shows that Zn 2p can be deconvoluted into two parts, Zn 2p 1/2 (1045.5 eV) and Zn 2p 3/2 (1022.4 eV) [ 22 ]. This was similar to the binding energy of conventional Zn-X-LDX/LDO previously reported (where X represents other metals) [ 23 , 24 ]. Unlike the material before adsorption, the P element appeared in the composite after adsorption.…”

Section: Resultssupporting

confidence: 89%

Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal

Zhang

et al. 2023

Molecules

View full text Add to dashboard Cite

Municipal sludge biochar (MSBC) can be used to absorb phosphorus in water for waste treatment. Nano-zero-valent zinc (nZVZ) was uniformly attached to MSBC to obtain a highly efficient phosphorus-absorbing composite material, nZVZ–MSBC. Characterization by FTIR, XPS, XRD, and BET showed that nZVZ was uniformly dispersed on the surface of the MSBC. Zinc loading was able to greatly improve the adsorption performance of MSBC for phosphorus. Adsorption experiments illustrated that the adsorption process conformed to the Langmuir model, and the maximum adsorption amount was 186.5 mg/g, which is much higher than that for other municipal sludge biochars. The adsorption process reached 80% of the maximum adsorption capacity at 90 min, and this gradually stabilized after 240 min; adsorption equilibrium was reached within 24 h. The optimum pH for adsorption was 5. The main adsorption mechanism was chemical adsorption, but physical adsorption, external diffusion, internal diffusion, and surface adsorption also played roles. The potential for application as an efficient adsorbent of phosphorus from water was confirmed. In addition, a novel strategy for municipal sludge disposal and resource utilization is provided.

show abstract

Section: Resultssupporting

confidence: 89%

Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal

Zhang

et al. 2023

Molecules

View full text Add to dashboard Cite

show abstract

“…Moreover, after adsorption, new peaks appeared at 860 cm -1 and 1392 cm -1 , which belong to the tensile vibration of the P-O bond. It indicated that the phosphate was successfully adsorbed to the surface of LDHs-BC4 [ 38 ]. The peaks at 3440 cm -1 and 1618 cm -1 were ascribed to the vibrations of -OH and H 2 O.…”

Section: Resultsmentioning

confidence: 99%

Efficiency Recycling and Utilization of Phosphate from Wastewater Using LDHs-Modified Biochar

Ding

Long

Zeng

et al. 2023

IJERPH

View full text Add to dashboard Cite

The excessive application of phosphate fertilizers easily causes water eutrophication. Phosphorus recovery by adsorption is regarded as an effective and simple intervention to control water bodies’ eutrophication. In this work, a series of new adsorbents, layered double hydroxides (LDHs)-modified biochar (BC) with different molar ratios of Mg2+ and Fe3+, were synthesized based on waste jute stalk and used for recycling phosphate from wastewater. The prepared LDHs-BC4 (the molar ratio of Mg/Fe is 4:1) has significantly high adsorption performance, and the recovery rate of phosphate is about 10 times higher than that of the pristine jute stalk BC. The maximum adsorption capacity of LDHs-BC4 for phosphate was 10.64 mg-P/g. The main mechanism of phosphate adsorption mainly includes electrostatic attraction, ion exchange, ligand exchange, and intragranular diffusion. Moreover, the phosphate-adsorbed LDHs-BC4 could promote mung bean growth, which indicated the recovery phosphate from wastewater could be used as a fertilizer.

show abstract

“…The adsorption process has been used extensively in water treatment processes with advantages such as high efficacy, low energy consumption, simple processing, and consistent and expedient processing, and it enables the possibility of pollutant recycling . These advantages and the possibility of low-cost adsorbents that have been recently developed from recycled materials enhance the application possibilities of this water treatment process. , Numerous applications of adsorption that have been investigated recently involve organic pollutants in both liquid and gaseous forms and volatile organic pollutants. Li et al studied the adsorption of phosphorus with ZnAl-LDO-activated banana biochar with 111.11 mg/g maximum theoretical adsorption capacity enhanced by C–H and O–H bonds in 240 min .…”

mentioning

confidence: 99%

“…These advantages and the possibility of low-cost adsorbents that have been recently developed from recycled materials enhance the application possibilities of this water treatment process. , Numerous applications of adsorption that have been investigated recently involve organic pollutants in both liquid and gaseous forms and volatile organic pollutants. Li et al studied the adsorption of phosphorus with ZnAl-LDO-activated banana biochar with 111.11 mg/g maximum theoretical adsorption capacity enhanced by C–H and O–H bonds in 240 min . Zn 3 (PO 4 ) 2 ·4H 2 O formed via complexation precipitation enhanced adsorption.…”

mentioning

confidence: 99%

“…Li et al studied the adsorption of phosphorus with ZnAl-LDOactivated banana biochar with 111.11 mg/g maximum theoretical adsorption capacity enhanced by C−H and O−H bonds in 240 min. 3 Zn 3 (PO 4 ) 2 •4H 2 O formed via complexation precipitation enhanced adsorption. However, adsorption generates lots of sludge that necessitates secondary treatment processes and transfers the pollutant from liquid or gas phase into solid phase (i.e., on the adsorbent surface).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Understanding the Principles and Applications of Dual Z-Scheme Heterojunctions: How Far Can We Go?

Malefane

Mafa

Managa

et al. 2023

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

In the past seven years, dual Z-scheme heterojunctions evolved as favorable approaches for enhanced charge carrier separation through direct or indirect charge transfer transportation mechanisms. The dynamics of the charge transfer is the major strategy for understanding their photoactivity and stability through the formation of distinctive redox centers. The understanding of currently recognized principles for successful fabrication and classification in different energy and pollution remediation strategies is discussed, and a universal charge transfer-type-based classification of dual Z-schemes that can be adopted for Z-scheme and S-scheme heterojunctions is proposed. Methods used for determining the charge transfer as proof of dual Z-scheme existence are outlined. Most importantly, a new macroscopic N-scheme and a triple Z-scheme that can also be adopted as triple S-scheme heterostructures composed of four semiconductors are proposed for generating both oxidatively and reductively empowered systems. The proposed systems are expected to possess properties that enable them to harvest solar light to drive important chemical reactions for different applications.

show abstract

Strong Adsorption of Phosphorus by ZnAl-LDO-Activated Banana Biochar: An Analysis of Adsorption Efficiency, Thermodynamics, and Internal Mechanisms

Cited by 21 publications

References 54 publications

Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal

Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal

Efficiency Recycling and Utilization of Phosphate from Wastewater Using LDHs-Modified Biochar

Understanding the Principles and Applications of Dual Z-Scheme Heterojunctions: How Far Can We Go?

Contact Info

Product

Resources

About