Lanthanum hydroxide engineered sewage sludge biochar for efficient phosphate elimination: Mechanism interpretation using physical modelling

Elkhlifi, Zouhair; Sellaoui, Lotfi; Min, Zhao; Ifthikar, Jerosha; Ali, Jawad; Shahib, Irshad Ibran; Sijilmassi, Badreddine; Lahori, Altaf Hussain; Rangabhashiyam, S.; Meili, Lucas; Gendy, Eman A.; Chen, Zhuqi

doi:10.1016/j.scitotenv.2021.149888

Cited by 23 publications

(6 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…32,33,35 The adsorption performance is primarily influenced by the structure and characteristics of the adsorbent. According to Jia et al 31 and Elkhlifi et al, 43 the adsorption capacity of 38 found that when the structure of lanthanum modified adsorbent contained only lanthanum oxide hydrate crystals, the adsorption capacity of the adsorbent could reach 148.31 mg/ g. However, in the present study, the maximum single-layer adsorption capacity of LCBC is up to 666.67 mg/g with both lanthanum hydroxide and hydrated lanthanum oxide crystal forms (Table 3). In summary, we conclude that the lanthanum hydroxide and hydrated lanthanum oxide crystal work synergistically to give the LCBC prepared in this study excellent adsorption capacity.…”

Section: Evaluation Of Regeneration Performancecontrasting

confidence: 48%

“…The adsorption performance is primarily influenced by the structure and characteristics of the adsorbent. According to Jia et al and Elkhlifi et al, the adsorption capacity of adsorbents can reach 148.11 and 312.55 mg/g, respectively, when the structure of lanthanum modified adsorbents contains only lanthanum hydroxide crystals. Similarly, Li et al found that when the structure of lanthanum modified adsorbent contained only lanthanum oxide hydrate crystals, the adsorption capacity of the adsorbent could reach 148.31 mg/g.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Significant Improvement of Adsorption for Phosphate Removal by Lanthanum-Loaded Biochar

et al. 2023

View full text Add to dashboard Cite

Due to eutrophication, removing phosphate ions from wastewater has received a lot of attention. In order to improve the phosphorus adsorption capacity of the material, this study used biomass pyrolysis to create a series of biochars modified with metal chloride ions. In accordance with adsorption tests, lanthanum-loaded biochar (LCBC) had a significant phosphorus adsorption capacity of approximately 666.67 mg/g, which was 30 times greater than that of pristine biochar. Adsorption kinetic analysis revealed that the LCBC's adsorption process could be fitted to the pseudo-secondary kinetic equation, indicating that chemical processes were primarily responsible for controlling the adsorption process. Zeta potential, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analysis showed that the main adsorption mechanism of LCBC for phosphate removal was electrostatic attraction of protonated H+ with negatively charged mono-hydrogen phosphate and dihydrogen phosphate ions and complexation reaction of the C�O on the carboxyl group and P�O on the phosphate group with the oxygen on the phosphate group and hydroxyl group. According to regeneration performance results, LCBC performed relatively better than asprepared adsorbents, and the phosphate removal rate was approximately 75.1% after the fifth regeneration cycle. The study provided a potential approach for creating and preparing an adsorbent with high adsorption for phosphate removal.

show abstract

Section: Evaluation Of Regeneration Performancecontrasting

confidence: 48%

Section: Resultsmentioning

confidence: 99%

Significant Improvement of Adsorption for Phosphate Removal by Lanthanum-Loaded Biochar

et al. 2023

View full text Add to dashboard Cite

show abstract

“…For both SBP and SBP–La, the Langmuir model was better in describing phosphate adsorption with a higher correlation coefficient r 2 , indicating the molecule adsorption process. 28,32 The estimated phosphate adsorption capacity was 46.5 mg g −1 for SBP–La calculated from the Langmuir equation, which was 6 times of that for SBP (7.67 mg g −1 ). SBP–La exhibited superior adsorption performance for phosphate recovery among the reported biochar granules with a simple fabrication process.…”

Section: Resultsmentioning

confidence: 93%

“…The similar pH dependency for phosphate adsorption was also reported for other Lacontaining materials previously, 20,21 which can be attributed to the alteration of interaction between phosphate and the La-containing material. 28 3.4.2. Influence of coexisting anions.…”

Section: Full Phosphate Recovery Performancementioning

confidence: 99%

Sludge-based biochar with lanthanum modification for phosphate recovery from wastewater streams

Pan

Yang

Liu

et al. 2022

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…The physisorption takes place when the ΔG ° value is within the range between −20 and 0 kJ/mol, while chemisorption occurs in the range of −400 to −80 kJ/mol. 50 , 51 Therefore, physical interactions were mainly involved in the adsorption of MB on AC/WCS hydrogels. With the rise in temperature, ΔG ° decreased accordingly, illustrating more driving forces and thereby resulting in higher adsorption capacity.…”

Section: Results and Discussionmentioning

confidence: 99%

Recycling of Waste Cotton Sheets into Three-Dimensional Biodegradable Carriers for Removal of Methylene Blue

2021

View full text Add to dashboard Cite

Waste cotton sheets (WCS) are promising cellulose sources due to their high content of cellulose and large amount of disposal every year, which could be recycled and employed as low-cost structural materials. The present work aims at investigating the efficacy of hydrogel adsorbents prepared from regenerated WCS as the carriers of activated carbon (AC) for treating the dye-contaminated water. Activated WCS was directly dissolved in lithium chloride/ N , N -dimethylacetamide (LiCl/DMAc) solvent and then regenerated into cellulose hydrogels, which were employed as three-dimensional biodegradable matrices for loading an extremely high content of AC (up to 5000%). The morphology and properties of resultant adsorbents were studied in detail. The results showed that different washing methods and contents of AC and cellulose had obvious effects on water contents, mechanical properties, and adsorption capacities of AC/WCS hydrogels. Especially, the hydrogels containing high AC content washed by gradient ethanol solvent exhibited outstanding compressive strengths of up to 3.0 MPa at 60% strain, while the adsorption capacity of 5000%AC/0.3CS toward a model dye methylene blue (MB, initial concentration of 200 mg/L) reached 174.71 mg/g at pH 6.9 and 35 °C. This was comparable to the adsorption capacity of original AC powders, while no AC powders were released from hydrogels to water. The adsorption of MB followed the Dubinin–Astakhov model and pseudo-first-order mechanism. Thermodynamic studies showed the spontaneous and endothermic nature of the overall physical adsorption process. Therefore, this work demonstrates the feasibility to recycle WCS into biodegradable carriers of functional compounds, and the AC/regenerated cellulose hydrogels have a high potential as a promising adsorbent with low-cost and convenient separation for dye removal from wastewater.

show abstract

Lanthanum hydroxide engineered sewage sludge biochar for efficient phosphate elimination: Mechanism interpretation using physical modelling

Cited by 23 publications

References 56 publications

Significant Improvement of Adsorption for Phosphate Removal by Lanthanum-Loaded Biochar

Significant Improvement of Adsorption for Phosphate Removal by Lanthanum-Loaded Biochar

Sludge-based biochar with lanthanum modification for phosphate recovery from wastewater streams

Recycling of Waste Cotton Sheets into Three-Dimensional Biodegradable Carriers for Removal of Methylene Blue

Contact Info

Product

Resources

About