Bioreactor-based bioremediation of hydrocarbon-polluted Niger Delta marine sediment, Nigeria.

3 Biotech
Chioma B ChikereGideon C Okpokwasili

Abstract

Crude oil-polluted marine sediment from Bonny River loading jetty Port Harcourt, Nigeria was treated in seven 2.5 l stirred-tank bioreactors designated BNPK, BNK5, BPD, BNO(3), BUNa, BAUT, and BUK over a 56-day period. Five bioreactors were biostimulated with either K(2)HPO(4), NH(4)NO(3), (NH(4))(2)SO(4), NPK, urea or poultry droppings while unamended (BUNa) and heat-killed (BAUT) treatments were controls. For each bioreactor, 1 kg (wet weight) sediment amended with 1 l seawater were spiked with 20 ml and 20 mg of crude oil and anthracene which gave a total petroleum hydrocarbons (TPH) range of 106.4-116 ppm on day 0. Polycyclic aromatic hydrocarbons (PAH) in all spiked sediment slurry ranged from 96.6 to 104.4 ppm. TPH in each treatment was ≤14.9 ppm while PAH was ≤6.8 ppm by day 56. Treatment BNO(3) recorded highest heterotrophic bacterial count (9.8 × 10(8) cfu/g) and hydrocarbon utilizers (1.15 × 10(8) cfu/g). By day 56, the percentages of biodegradation of PAHs, as measured with GC-FID were BNK5 (97.93%), BNPK (98.38%), BUK (98.82%), BUNa (98.13%), BAUT (93.08%), BPD (98.92%), and BNO(3) (98.02%). BPD gave the highest degradation rate for PAH. TPH degradation rates were as follows: BNK5 (94.50%), BNPK (94.77%), BUK (94.10...Continue Reading

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Citations

Oct 12, 2013·Environmental Science and Pollution Research International·Hirak R DashSurajit Das
Aug 8, 2015·World Journal of Microbiology & Biotechnology·Amiy Dutt ChaturvediAwanish Kumar
Sep 18, 2016·World Journal of Microbiology & Biotechnology·Christopher Chibueze AzubuikeGideon Chijioke Okpokwasili
Aug 6, 2017·Applied and Environmental Microbiology·Annette Summers EngelEdward B Overton
Jun 27, 2019·Applied Biochemistry and Biotechnology·Marie Thérèse Bidja AbenaWeihong Zhong
Dec 26, 2018·TheScientificWorldJournal·Nigel Makombe, Reginald Dennis Gwisai
Jun 2, 2017·3 Biotech·Punniyakotti ElumalaiAruliah Rajasekar
May 5, 2018·Biodegradation·Rita de Cássia Freire Soares da SilvaLeonie Asfora Sarubbo
Feb 13, 2021·International Journal of Environmental Research and Public Health·Gayathiri VerasoundarapandianSiti Aqlima Ahmad

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