التفاصيل البيبلوغرافية
| العنوان: |
Solo tratado com cimento para sorção de Pb2+, Cd2+, Cr3+ e As5+ em barreiras reativas permeáveis ; Soil treated with cement for sorption of Pb2+, Cd2+, Cr3+, and As5+ in permeable reactive barriers |
| المؤلفون: |
Santos, Aline Monteiro dos, Azevedo, Izabel Christina d'Almeida Duarte de, Assis, Igor Rodrigues, Nascentes, Rejane, Cândido, Eduardo Souza |
| المصدر: |
Engenharia Sanitária e Ambiental |
| بيانات النشر: |
Associação Brasileira de Engenharia Sanitária e Ambiental (ABES) |
| سنة النشر: |
2020 |
| المجموعة: |
Repositório Institucional da Universidade Federal de Lavras (RIUFLA) |
| مصطلحات موضوعية: |
Metais pesados, Meio ambiente - Contaminação, Solo tratado com cimento, Heavy metals, Environment contamination, Soil treated with cement |
| الوصف: |
Environment contamination originates mainly from the exploitation of natural resources and industrial production, with the generation of waste generally disposed on the soil or in the water. One of the solutions for the contaminated groundwater remediation is the isolation of the region (plume) with reactive permeable barriers. In this context, this work aimed to evaluate the sorption of lead (Pb2+), cadmium (Cd2+), chromium (Cr3+), and arsenic (As5+) by two soils with doses of 1, 2 and 4% of Portland cement. Batch equilibrium assays were performed with monospecific solutions of Pb2+, Cd2+, Cr3+, and As5+. Sorption isotherms were obtained from equilibrium concentration values of solute in solution (Ce) and mass of solute sorbed by soil mass (S), according to the Langmuir and Freundlich models. The data collected after models adjustment were submitted to regression analysis to evaluate the effect of the cement doses. The pH increase caused by the cement addition made it impossible for most elements in both soils to adjust the theoretical models of Freundlich or Langmuir due to the predominant precipitation of metals. The analyzed sorghum that best satisfied the sorption conditions, for both arsenic and lead, was sandy soil with 2% cement addition. As for cadmium, it was the clay soil with 1% cement. For chromium, it was not possible to establish the best cement dose due to the total metal precipitation at all doses evaluated. ; A contaminação do meio ambiente tem origem principalmente na exploração de recursos naturais e na produção industrial, que geram resíduos que normalmente acabam dispostos nos solos ou nas águas. Uma das soluções encontradas para a remediação de águas subterrâneas contaminadas é o isolamento da região (pluma) com barreiras reativas permeáveis. Nesse contexto, o objetivo deste trabalho foi avaliar a sorção de chumbo (Pb2+), cádmio (Cd2+), cromo (Cr3+) e arsênio (As5+) por dois solos, com doses de 1, 2 e 4% de cimento Portland. Ensaios de equilíbrio em lote foram realizados com soluções ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
Portuguese |
| Relation: |
SANTOS, A. M. dos et al. Solo tratado com cimento para sorção de Pb2+, Cd2+, Cr3+ e As5+ em barreiras reativas permeáveis. Engenharia Sanitária e Ambiental, Rio de Janeiro, v. 25, n. 3, maio/jun. 2020.; http://repositorio.ufla.br/jspui/handle/1/42316 |
| الاتاحة: |
http://repositorio.ufla.br/jspui/handle/1/42316 |
| Rights: |
Attribution 4.0 International ; acesso aberto ; http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.F8215361 |
| قاعدة البيانات: |
BASE |