The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Removal of hexavalent chromium in aqueous solutions using biochar: Chemical and spectroscopic investigations
Abstract
Biochar is an emerging low-cost sorbent used for removing trace metals from water. In this study, we evaluated the removal potential of aqueous hexavalent chromium (Cr(VI)) by biochars produced from soybean (Glycinemax L.) and burcucumber (Sicyos angulatus L.) residues. The highest Cr(VI) removal from solution occurred at low pH values (pH2-5), and adsorption decreased approximately tenfold when the pH increased from 2 to 10. Synchrotron-based X-ray absorption spectroscopy (XAS) investigations showed that Cr(VI) species were reduced to trivalent chromium (Cr(III)) at the biochar surface following Cr(VI) adsorption. Linear combination fitting (LCF) of X-ray absorption near edge structure (XANES) data indicated that approximately 90% of the total Cr(VI) (962μM) was reduced to Cr(III). Extended X-ray absorption fine structure (EXAFS) fitting results yielded interatomic chromium (CrCr) distances consistent with the formation of Cr(III) precipitates as Cr(OH)3. Trivalent chromium is far less soluble than Cr(VI) and typically precipitates as amorphous Cr(III) solids. Thus, biochars produced by soybean and burcucumber residues are a promising technique for both adsorbing and reductively immobilizing Cr(VI) from aqueous solutions.
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Biochar as a sorbent for contaminant management in soil and water: A review
Ahmad, M., Rajapaksha, A. U., Lim, J. E., Zhang, M., Bolan, N., Mohan, D., Vithanage, M., Lee, S. S., & Ok, Y. S. (2014) · Chemosphere · doi:10.1016/j.chemosphere.2013.10.071 · Cited by 4,662
Self-citationMohan, D., Sarswat, A., Ok, Y. S., & Pittman, C. U. (2014) · Bioresource Technology · doi:10.1016/j.biortech.2014.01.120 · Cited by 2,313
Self-citationAhmad, M., Lee, S. S., Dou, X., Mohan, D., Sung, J.-K., Yang, J. E., & Ok, Y. S. (2012) · Bioresource Technology · doi:10.1016/j.biortech.2012.05.042 · Cited by 1,357
Self-citationCharacterization of biochars to evaluate recalcitrance and agronomic performance
Enders, A., Hanley, K., Whitman, T., Joseph, S., & Lehmann, J. (2012) · Bioresource Technology · doi:10.1016/j.biortech.2012.03.022 · Cited by 1,113
The immobilisation and retention of soluble arsenic, cadmium and zinc by biochar
Beesley, L., & Marmiroli, M. (2011) · Environmental Pollution · doi:10.1016/j.envpol.2010.10.016 · Cited by 769
Screening biochars for heavy metal retention in soil: Role of oxygen functional groups
Uchimiya, M., Chang, S., & Klasson, K. T. (2011) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2011.03.063 · Cited by 678
Cr(VI) Adsorption and Reduction by Humic Acid Coated on Magnetite
Jiang, W., Cai, Q., Xu, W., Yang, M., Cai, Y., Dionysiou, D. D., & O’Shea, K. E. (2014) · Environmental Science & Technology · doi:10.1021/es405804m · Cited by 462
Enhanced sulfamethazine removal by steam-activated invasive plant-derived biochar
Rajapaksha, A. U., Vithanage, M., Ahmad, M., Seo, D.-C., Cho, J.-S., Lee, S.-E., Lee, S. S., & Ok, Y. S. (2015) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2015.02.046 · Cited by 398
Self-citationPyrolysis condition affected sulfamethazine sorption by tea waste biochars
Rajapaksha, A. U., Vithanage, M., Zhang, M., Ahmad, M., Mohan, D., Chang, S. X., & Ok, Y. S. (2014) · Bioresource Technology · doi:10.1016/j.biortech.2014.05.029 · Cited by 357
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Review of organic and inorganic pollutants removal by biochar and biochar-based composites
Liang, L., Xi, F., Tan, W., Meng, X., Hu, B., & Wang, X. (2021) · Biochar · doi:10.1007/s42773-021-00101-6 · Cited by 662
Ball milling as a mechanochemical technology for fabrication of novel biochar nanomaterials
Kumar, M., Xiong, X., Wan, Z., Sun, Y., Tsang, D. C. W., Gupta, J., Gao, B., Cao, X., Tang, J., & Ok, Y. S. (2020) · Bioresource Technology · doi:10.1016/j.biortech.2020.123613 · Cited by 561
Self-citationOsman, A. I., Fawzy, S., Farghali, M., El-Azazy, M., Elgarahy, A. M., Fahim, R. A., Maksoud, M. I. A. A., Ajlan, A. A., Yousry, M., Saleem, Y., et al. (2022) · Environmental Chemistry Letters · doi:10.1007/s10311-022-01424-x · Cited by 515
Sun, Y., Yu, I. K. M., Tsang, D. C. W., Cao, X., Lin, D., Wang, L., Graham, N. J. D., Alessi, D. S., Komárek, M., Ok, Y. S., et al. (2019) · Environment International · doi:10.1016/j.envint.2019.01.047 · Cited by 489
Self-citationKumar, M., Sun, Y., Rathour, R., Pandey, A., Thakur, I. S., & Tsang, D. C. W. (2020) · Science of The Total Environment · doi:10.1016/j.scitotenv.2020.137116 · Cited by 472
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Metadata
- Authors
- Rajapaksha, A. U., Alam, M. S., Chen, N., Alessi, D. S., Igalavithana, A. D., Tsang, D. C. W., & Ok, Y. S.
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2018-06
- Volume
- 625
- Pages
- 1567-1573
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W2783815777
- Cited by
- 221
- References
- 9
- FWCI
- 13.26
- Type
- journal article
- Language
- en
- Open access
- closed
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