Use of biochar and a post-coagulation effluent as an adsorbent of malachite green, beneficial bacteria carrier, and seedling substrate for plants belonging to the poaceae family.

Autor: Plaza-Rojas CA; Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia., Amaya-Orozco NA; Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia., Rivera-Hoyos CM; Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia., Montaña-Lara JS; Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia., Páez-Morales A; Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia., Salcedo-Reyes JC; Laboratorio de Películas Delgadas y Nanofotónica, Grupo de Películas Delgadas y Nanofotónica, Departamento de Física, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia., Castillo-Carvajal LC; Facultad de Ciencias de la Salud, Universidad Anáhuac, P.O. Box 01840, México, DF México., Martínez-Urrútia W; Grupo de Diseño Avanzado, Fundación Universidad de América, P.O. Box 110-23, Bogotá, DC Colombia., Díaz-Ariza LA; Laboratorio Asociaciones Suelo-Panta-Microorganismo, Grupo de Investigación en Agricultura Biológica, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, P.O. Box 110-23, Bogotá, DC Colombia., Pedroza-Rodríguez AM; Laboratorio de Microbiología Ambiental y Suelos, Unidad de Investigaciones Agropecuarias (UNIDIA), Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7ma No 43-82, Edifício 50 Lab. 106, P.O. Box 110-23, Bogotá, DC Colombia.
Jazyk: angličtina
Zdroj: 3 Biotech [3 Biotech] 2023 Dec; Vol. 13 (12), pp. 386. Date of Electronic Publication: 2023 Nov 03.
DOI: 10.1007/s13205-023-03766-x
Abstrakt: Wastewater treatment plants produce solid and semi-solid sludge, which treatment minimises secondary environmental pollution because of wastewater treatment and obtaining new bioproducts. For this reason, in this paper, the co-pyrolysis of biogenic biomasses recovered from a biological reactor with immobilised fungal and bacterial biomass and a tertiary reactor with Chlorella sp. used for dye-contaminated wastewater treatment was carried out. Biogenic biomasses mixed with pine bark allowed the production and characterisation of two types of biochar. The raw material and biochar were on the "in vitro" germination of Lolium sp. seeds, followed by adsorption studies for malachite green (MG) dye using the raw material and the biochar. Results showed that using 60 mg L -1 of a cationic coagulant at pH 6.5 allowed for the recovery of more than 90% of the microalgae after 50 min of processing. Two biochar resulted: BC 300 , at pH 5.08 ± 0.08 and BC 500 , at pH 6.78 ± 0.01. The raw material and both biochars were co-inoculated with growth-promoting bacteria; their viabilities ranged from 1.7 × 10 6  ± 1.0 × 10 1 to 7.5 × 10 8  ± 6.0 × 10 2  CFU g -1 for total heterotrophic, nitrogen-fixing and phosphate-solubilising bacteria. Re-use tests on Lolium sp. seed germination showed that with the post-coagulation effluent, the germination was 100%, while with the biochar, with and without beneficial bacteria, the germination was 98 and 99%, respectively. Finally, BC 500 adsorbed the highest percentage of malachite green at pH 4.0, obtaining q ecal values of 0.5249 mg g -1 ( R 2 : 0.9875) with the pseudo-second-order model.
Supplementary Information: The online version contains supplementary material available at 10.1007/s13205-023-03766-x.
Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest in the publication.
(© The Author(s) 2023.)
Databáze: MEDLINE
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