Published August 1, 2019 | Version v1
Journal article Metadata-only

Biogreen remediation of chromium-contaminated soil using Pseudomonas sp. (RPT) and neem (Azadirachta indica) oil cake

Creators

  • 1. University of Seoul, Department of Environmental Engineering (Korea, Republic of)
  • 2. Mahendra Arts and Science College (Autonomous), PG and Research Department of Biotechnology (India)
  • 3. King Saud University, Department of Botany and Microbiology, College of Science (Saudi Arabia)
  • 4. King Abdulaziz City for Science and Technology (KACST), National Centre for Biotechnology (Saudi Arabia)
  • 5. Chonbuk National University, Division of Biotechnology, College of Environmental and Bioresource Sciences (Korea, Republic of)

Description

The prospective of indigenous Pseudomonas sp. (RPT) and neem oil cake for enhanced removal of chromium (Cr) from contaminated soil microcosm was explored in this study. The bacteria were isolated from Cr-contaminated soil and identified as Pseudomonas sp. based on partial 16S rDNA sequencing. The isolate RPT showed high Cr(VI) tolerance (1000 mg/l) and removal rate (64.4%) in batch experiments. Transmission electron microscopy observation showed that the isolate effectively precipitated the Cr both intra- and extracellularly. Microcosm studies revealed that neem oil cake amendment (7.5% w/v) enhanced Cr(VI) removal (82%) from contaminated soil. Furthermore, soil enzyme activities were increased in the biostimulated soil. The obtained results indicated that the application of neem oil cake along with indigenous Cr(VI)-resistant bacteria could inspire the bioremediation of Cr(VI)-contaminated soil field scale.

Additional details

Identifiers

DOI
10.1007/s13762-018-2136-6;

Publishing Information

Journal Title
International Journal of Environmental Science and Technology (Tehran)
Journal Volume
16
Journal Issue
8
Journal Page Range
p. 4595-4600
ISSN
1735-1472

INIS

Country of Publication
Iran, Islamic Republic of
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54093018
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
BIOREMEDIATION; CHROMIUM; ENZYME ACTIVITY; MICROCOSMS; OILS; PRECIPITATION; PSEUDOMONAS; SOILS; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
BACTERIA; ELECTRON MICROSCOPY; ELEMENTS; METALS; MICROORGANISMS; MICROSCOPY; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; REMEDIAL ACTION; SEPARATION PROCESSES; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2019 Islamic Azad University (IAU)