Heavy Metals Removal From Spent Synthetic-Based Drilling Mud Using Nano Zero-Valent Iron (nZVI) | Chapter 05 | New Insights on Chemical Research Vol. 1
Management of waste generated from oil
and gas activities in the Niger Delta, is a major environmental challenge given
that if the spent mud is disposed without proper treatment, the heavy metals
will pose a lot of health risks to human through ingestion or inhalation. The
heavy metals are also toxic to marine organisms, if disposed into the sea,
untreated. Spent synthetic drilling mud is a major waste stream, among its
components, are heavy metals. Samples collected on day 0 and biweekly were
digested and analysed using the atomic absorption spectrometer (AAS). With nano
Zero-Valent Iron, nZVI, concentration of 0.75mg/L of the spent mud, more than
95% removal were recorded for most metals in 6 weeks and over 99% in 12 weeks.
The residual heavy metal concentrations met global limits for effluent
disposal. Mathematical models with the goodness of fit, R2 of 0.999, were
developed to predict the removal process.
Author(s) Details
Dr. Obinduka Felix
Centre for Occupational
Health, Safety and Engineering, University of Port-Harcourt, Nigeria.
Prof. Ify L. Nwaogazie
Department of Civil and
Environment Engineering, University of Port-Harcourt, Nigeria.
Prof. Onyewuchi Akaranta
Centre of Excellence, Centre
for Oilfield Chemicals Research, University of Port Harcourt, Port Harcourt,
Nigeria.
Prof. Gideon O. Abu
Department of Microbiology,
University of Port Harcourt, Port Harcourt, Nigeria.
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