The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.
Evaluation of nitrate and phosphate adsorption on Al-modified biochar: Influence of Al content
Abstract
Biochars with different Al contents (i.e., 5, 10, 15, and 20 wt%) were prepared to evaluate their adsorption capacities for nitrate (NO3-) and phosphate (PO43-) from eutrophic water. Several techniques, including N2 adsorption-desorption, X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectrometry, were applied to characterize the physical-chemical properties of the biochars. We found that the NO3- and PO43- adsorptions significantly improved on the Al-modified biochars because of their multifunctional and surface charge properties. In single-solute adsorption, 15 Al/BC and 20 Al/BC exhibited optimal NO3- and PO43- adsorption capacities, respectively. In bi-solute coadsorption, the PO43- adsorption on the biochar was less affected with the coexistence of NO3-, whereas the coexistence of PO43- had a significant impact on the NO3- adsorption. The optimal solution pH for NO3- adsorption was 6, and pH < 6 was advantageous to PO43- adsorption. In the kinetic study, the pseudo-second-order model could describe the NO3- and PO43- adsorptions on biochar well, indicating that chemical adsorption was the main adsorption mechanism. The Langmuir-Freundlich model agreed well with the NO3- and PO43- adsorptions on the biochars, and the maximum adsorption capacities for NO3- and PO43- reached 89.58 mg/g and 57.49 mg/g, respectively. Therefore, the Al-modified biochar was a good choice for the remediation of eutrophic water.
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Bacelo, H., Pintor, A. M. A., Santos, S. C. R., Boaventura, R. A. R., & Botelho, C. M. S. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122566 · Cited by 620
Influence of activation conditions on the physicochemical properties of activated biochar: a review
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Using sewage sludge with high ash content for biochar production and Cu (II) sorption
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Metadata
- Authors
- Yin, Q., Ren, H., Wang, R., & Zhao, Z.
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2018-08
- Volume
- 631-632
- Pages
- 895-903
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W2789940574
- Cited by
- 304
- References
- 33
- FWCI
- 12.52
- Type
- journal article
- Language
- en
- Open access
- closed
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