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Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics
In response to the insufficient supply of carbon sources and the toxicity of heavy metal ions when using sulfate reducing bacteria (SRB) to treat acid mine wastewater (AMD), the immobilized particles are prepared with Rhodopseudomonas, SRB and lignite as the main raw materials. And based on single f...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8913651/ https://www.ncbi.nlm.nih.gov/pubmed/35273309 http://dx.doi.org/10.1038/s41598-022-08029-y |
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author | Di, Junzhen Jiang, Yangyang Wang, Mingjia Dong, Yanrong |
author_facet | Di, Junzhen Jiang, Yangyang Wang, Mingjia Dong, Yanrong |
author_sort | Di, Junzhen |
collection | PubMed |
description | In response to the insufficient supply of carbon sources and the toxicity of heavy metal ions when using sulfate reducing bacteria (SRB) to treat acid mine wastewater (AMD), the immobilized particles are prepared with Rhodopseudomonas, SRB and lignite as the main raw materials. And based on single factor test and orthogonal test to determine the optimal ratio of biologically activated lignite fixed SRB particles. The adsorption characteristics of immobilized particles were studied under the optimal ratio, and the reaction kinetics and adsorption capacity of SRB particles immobilized on biologically activated lignite to different ions were analyzed. The results show that: lignite not only has good adsorption performance, but also can be used as the carbon source of SRB after being degraded by Rhodopseudomonas, solving the problems of low removal efficiency of SRB treatment of AMD and insufficient carbon source supply. When the dosage of lignite (particle size is 200 mesh), Rhodopseudomonas, and SRB are 3%, 10%, and 10% mesh, the prepared biologically activated lignite-immobilized SRB particles have the best effect on AMD treatment. The removal rates of SO(4)(2−), Zn(2+), and Cu(2+) were 83.21%, 99.59%, and 99.93%, respectively, the pH was increased to 7.43, the COD release was 523 mg/L, and the ORP value was − 134 mV. The reduction process of SO(4)(2−) by the biologically activated lignite-immobilized SRB particles conforms to the pseudo-first-order kinetics, and the adsorption of Zn(2+) is more in line with the Freundlich isotherm adsorption equation and the pseudo-second-order kinetic model. And it does not spread in a single form, both internal and external diffusion occur. SEM, FT-IR, and BET analysis of biologically activated lignite immobilized SRB particles showed that the pore structure is developed, has a large number of adsorption sites, and some activated groups participate in the reaction. The adsorption process of Zn(2+) and Cu(2+) in AMD meets the multi-layer adsorption theory. |
format | Online Article Text |
id | pubmed-8913651 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-89136512022-03-11 Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics Di, Junzhen Jiang, Yangyang Wang, Mingjia Dong, Yanrong Sci Rep Article In response to the insufficient supply of carbon sources and the toxicity of heavy metal ions when using sulfate reducing bacteria (SRB) to treat acid mine wastewater (AMD), the immobilized particles are prepared with Rhodopseudomonas, SRB and lignite as the main raw materials. And based on single factor test and orthogonal test to determine the optimal ratio of biologically activated lignite fixed SRB particles. The adsorption characteristics of immobilized particles were studied under the optimal ratio, and the reaction kinetics and adsorption capacity of SRB particles immobilized on biologically activated lignite to different ions were analyzed. The results show that: lignite not only has good adsorption performance, but also can be used as the carbon source of SRB after being degraded by Rhodopseudomonas, solving the problems of low removal efficiency of SRB treatment of AMD and insufficient carbon source supply. When the dosage of lignite (particle size is 200 mesh), Rhodopseudomonas, and SRB are 3%, 10%, and 10% mesh, the prepared biologically activated lignite-immobilized SRB particles have the best effect on AMD treatment. The removal rates of SO(4)(2−), Zn(2+), and Cu(2+) were 83.21%, 99.59%, and 99.93%, respectively, the pH was increased to 7.43, the COD release was 523 mg/L, and the ORP value was − 134 mV. The reduction process of SO(4)(2−) by the biologically activated lignite-immobilized SRB particles conforms to the pseudo-first-order kinetics, and the adsorption of Zn(2+) is more in line with the Freundlich isotherm adsorption equation and the pseudo-second-order kinetic model. And it does not spread in a single form, both internal and external diffusion occur. SEM, FT-IR, and BET analysis of biologically activated lignite immobilized SRB particles showed that the pore structure is developed, has a large number of adsorption sites, and some activated groups participate in the reaction. The adsorption process of Zn(2+) and Cu(2+) in AMD meets the multi-layer adsorption theory. Nature Publishing Group UK 2022-03-10 /pmc/articles/PMC8913651/ /pubmed/35273309 http://dx.doi.org/10.1038/s41598-022-08029-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Di, Junzhen Jiang, Yangyang Wang, Mingjia Dong, Yanrong Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title | Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title_full | Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title_fullStr | Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title_full_unstemmed | Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title_short | Preparation of biologically activated lignite immobilized SRB particles and their AMD treatment characteristics |
title_sort | preparation of biologically activated lignite immobilized srb particles and their amd treatment characteristics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8913651/ https://www.ncbi.nlm.nih.gov/pubmed/35273309 http://dx.doi.org/10.1038/s41598-022-08029-y |
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