Assessment of agricultural waste biochars for remediation of degraded water-soil environment: Dissolved organic carbon release and immobilization of impurities in one- or two-adsorbate systems
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Manuscript_preprint_waste management.pdf (921.22 KB)
0000-0002-8860-1796 Date
0023-01-01
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Elsevier
Abstract
The authors indicated the method of agricultural waste (potato stems and raspberry bushes) management, referring to the assumptions of the circular economy. They described production process of two biochars (BC) and defined their potential as agents for remediation of degraded soil-water environment. The study included BC physicochemistry (porosity, surface charge, etc.), dissolved organic carbon (DOC) release in H2O, NaOH, HCl, and ability to immobilize copper (Cu), tetracycline (TC) and carboxin (CB) in the one- and two-adsorbate systems. Potato-biochar (P-BC) had more developed surface and better porosity parameters than raspberry-biochar (R-BC). Specific surface area (SBET) of P-BC was 122 m2/g, whilst of R-BC 87 m2/g. For both biochars, the largest extractable DOC was noted in the NaOH solution. It was predominantly constituted of substances with large molecular weight and high aromaticity, which is highly helpful in sorption processes. The efficiency of impurities adsorption in the one-adsorbate systems was the highest for P-BC (61.75% for Cu, 73.84% for TC and 54.43% for CB). In the two-adsorbate systems, TC and CB improved adsorption of Cu. Moreover, CB and TC were adsorbed better in their mixed solution. In the examined systems, the desorption of Cu was the highest with the use HCl, whilst the desorption of TC and CB – with the use NaOH. The maximum desorption degrees were noticed in two-adsorbate system of TC+CB (even 63.6% of TC). The presented results showed that agricultural wastes can be used to generate highly effective biochars with large application potential, especially during remediation of water-soil environments.
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Uploaded file is the preprint of publication: Agnieszka Tomczyk, Adam Kubaczyński, Katarzyna Szewczuk-Karpisz, Assessment of agricultural waste biochars for remediation of degraded water-soil environment: Dissolved organic carbon release and immobilization of impurities in one- or two-adsorbate systems, Waste Management, Volume 155, 2023, Pages 87-98, ISSN 0956-053X, https://doi.org/10.1016/j.wasman.2022.10.039.
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Agnieszka Tomczyk, Adam Kubaczyński, Katarzyna Szewczuk-Karpisz, Assessment of agricultural waste biochars for remediation of degraded water-soil environment: Dissolved organic carbon release and immobilization of impurities in one- or two-adsorbate systems, Waste Management, Volume 155, 2023, Pages 87-98, ISSN 0956-053X, https://doi.org/10.1016/j.wasman.2022.10.039.