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AuthorSalah, Jellali
AuthorKhiari, Besma
AuthorAl-Balushi, Maram
AuthorAl-Sabahi, Jamal
AuthorHamdi, Helmi
AuthorBengharez, Zohra
AuthorAl-Abri, Mohammed
AuthorAl-Nadabi, Hamed
AuthorJeguirim, Mejdi
Available date2024-06-06T07:42:08Z
Publication Date2023-12-27
Publication NameJournal of Environmental Management
Identifierhttp://dx.doi.org/10.1016/j.jenvman.2023.119926
CitationJellali, S., Khiari, B., Al-Balushi, M., Al-Sabahi, J., Hamdi, H., Bengharez, Z., ... & Jeguirim, M. (2024). Use of waste marble powder for the synthesis of novel calcium-rich biochar: Characterization and application for phosphorus recovery in continuous stirring tank reactors. Journal of Environmental Management, 351, 119926.
ISSN0301-4797
URIhttps://www.sciencedirect.com/science/article/pii/S0301479723027147
URIhttp://hdl.handle.net/10576/55860
AbstractThis study investigates—for the first time—the synthesis of a novel Ca-rich biochar (N–Ca–B) and its potential use for phosphorus (P) recovery from both synthetic solutions (SS) and treated urban wastewater (TUW) in a continuous stirring tank reactor (CSTR) mode. The novel biochar was synthesized by pyrolysis at 900 °C of a mixture composed of three different materials: animal biomass (poultry manure; PM), lignocellulosic waste (date palm fronds; DPFs), and abundant mineral waste (waste marble powder; WMP). Characterization of N–Ca–B showed that it has good textural properties: well-developed porosity, and high specific surface area. Furthermore, high calcium hydroxide (Ca(OH)2) and calcium oxides (CaO) nanoparticle loads were observed on the biochar surface. The dynamic CSTR assays indicated that the P recovery efficiency mainly depended on the biochar mass, P influent concentration, and, especially, the Ca content of the feeding solution. Owing to its richness in Ca cations, TUW exhibited the highest adsorbed P amount (109.2 mg g−1), i.e., about 14% larger than the SS. P recovery occurs through precipitation as hydroxyapatite, surface complexation, and electrostatic interactions with positively charged biochar particles. In real-world scenarios, CSTR systems can be applied as a tertiary treatment step in existing wastewater treatment plants (WWTPs). Decanted P-loaded biochar can be used in agriculture as a slow-release fertilizer instead of commercial products.
SponsorThis work was funded by Sultan Qaboos University and Qatar University in the joint projects CL/SQU\QU/CESR/23/01 and IRCC-2023-004, respectively.
Languageen
PublisherElsevier
SubjectCalcium-rich biochar
Nutrients
Recovery
CSTR
Precipitation
TitleUse of waste marble powder for the synthesis of novel calcium-rich biochar: Characterization and application for phosphorus recovery in continuous stirring tank reactors
TypeArticle
Volume Number351
ESSN1095-8630
dc.accessType Full Text


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