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Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study

IR@CSIR-NEERI

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Title Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study
 
Creator Nanekar, S
Dhote, M
Kashyap, S M
Singh, S K
Juwarkar, Asha Ashok
 
Subject Environmental Biotechnology
 
Description A mesocosm study was evaluated to elucidate
the influence of amendments such as microbial consortium,
plant (Vetiveria zizanioides), bulking agent (wheat husk)
and nutrients on remediation of oil sludge over a period of
90 days. The experiment was conducted in a 15 m2 plot
which was divided into eight units comprising of soil
sludge mixture (1:1) at CSIR-NEERI premises. During the
experiment, oil degradation was estimated gravimetrically
and polyaromatic hydrocarbons (PAHs) were quantified on
GC–MS. Additionally, dehydrogenase activity was also
monitored. The treatment integrated with bulking agent,
nutrients, consortium and plant resulted in 28-fold
increased dehydrogenase activity and complete mineralization
of higher PAHs. Furthermore, 72.8 % total petroleum
hydrocarbons (TPH) degradation was observed in
bulked treatment with plant, nutrients and consortium followed
by 69.6 and 65.4 % in bioaugmented treatments
with and without nutrients, respectively, as compared to
control (33.4 %). A lysimeter study was also conducted
simultaneously using Vetiver and consortium to monitor
groundwater contamination by heavy metals in oil sludge
which showed a marked decrease in the concentrations of
metals such as lead and cadmium in leachates. This study
validates a holistic approach for remediation of
oil sludge contaminated soils/sites which is a burning issue
since decades by the use of microbe assisted phytoremediation technology which not only solves the problem of oil contamination but also takes care of heavy metal contamination.
 
Publisher Springer
 
Date 2015-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/546/1/paper3-smk-2015.pdf
Nanekar, S and Dhote, M and Kashyap, S M and Singh, S K and Juwarkar, Asha Ashok (2015) Microbe assisted phytoremediation of oil sludge and role of amendments: a mesocosm study. International Journal of Environmental Science and Technology , 12 (1). pp. 193-202. ISSN 1735-1472
 
Relation http://link.springer.com/article/10.1007/s13762-013-0400-3
http://neeri.csircentral.net/546/