Freeman Ntuli

ORCID: 0000-0003-4045-902X
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About
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Research Areas
  • Mine drainage and remediation techniques
  • Metal Extraction and Bioleaching
  • Extraction and Separation Processes
  • Minerals Flotation and Separation Techniques
  • Adsorption and biosorption for pollutant removal
  • Recycling and utilization of industrial and municipal waste in materials production
  • Municipal Solid Waste Management
  • Concrete and Cement Materials Research
  • Recycling and Waste Management Techniques
  • Coal and Its By-products
  • Phosphorus and nutrient management
  • Thermochemical Biomass Conversion Processes
  • Coagulation and Flocculation Studies
  • Crystallization and Solubility Studies
  • Mineral Processing and Grinding
  • Advanced Photocatalysis Techniques
  • Tailings Management and Properties
  • Metallurgical Processes and Thermodynamics
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Advanced oxidation water treatment
  • Wastewater Treatment and Reuse
  • Rock Mechanics and Modeling
  • Analytical Chemistry and Chromatography
  • Mining Techniques and Economics
  • Clay minerals and soil interactions

University of Johannesburg
2015-2024

Botswana International University of Science and Technology
2018-2024

Technical University of Denmark
2022

University of Cape Town
2006-2009

10.1016/j.jiec.2013.07.007 article EN Journal of Industrial and Engineering Chemistry 2013-07-09

The need to reduce carbon emissions has encouraged more research into use of biomass energy in place coal. Biomass is neutral; its can therefore lower net emissions. be upgraded a fuel similar coal by torrefaction. Different have been torrefied but there limited possible lignocellulose from animal waste. This study aims compare extent densification cow dung, corn cob and pine wood. They were dried, ground sieved. Proximate ultimate analysis was conducted. samples then at 200, 250 300 °C 10...

10.1016/j.sajce.2017.10.004 article EN cc-by-nc-nd South African Journal of Chemical Engineering 2017-10-16

The use of industrial waste as a potential stabilizer marginal construction materials is cost effective. Phosphogypsum and fly ash are wastes generated in very large quantities readily available South Africa. In order to explore the stabilization vastly abundant expansive soil using larger quantity phosphogypsum modifier, composites with mixture lime‐fly ash‐phosphogypsum‐basic oxygen furnace slag were developed. However because presence radionuclide, it was necessary treat mild citric acid....

10.1155/2018/3640868 article EN cc-by Advances in Civil Engineering 2018-01-01

This study investigated the removal of phosphorus from waste phosphogypsum by using citric acid as a leaching reagent, evaluated potential environmental effect final product produced and provide recommendations for application developed products. A dissolution process was applied three variables were studies namely, concentration, stirring speed temperature. The results showed that Phosphorus can successfully be removed optimum conditions at concentration 0.5 M temperature 40 °C, with no...

10.1016/j.sajce.2018.11.001 article EN cc-by-nc-nd South African Journal of Chemical Engineering 2018-11-15

The disposal of sludge processes accounts for 60% the total operation and 40% emissions greenhouse gas from wastewater treatment plants operations. Moreover, contains pathogenic microorganisms, organics, inorganics, trace metals emerging micropollutants, which can be a public health menace. To comply with Environmental Protection Agency standards, must stabilized detoxified before being disposed or reused. This study focuses on use biochar (adsorbent) pyrolysis removal selected (copper,...

10.1016/j.cscee.2020.100018 article EN cc-by Case Studies in Chemical and Environmental Engineering 2020-06-21

Metals, including rare earth elements (REE), are the cornerstone of our current and future low-carbon urban infrastructure. This study looks at different waste resources contaminated materials present in setting as REE sources. Wastes other dilute sources such incineration ashes, sediments, mine tailings not only essential achieving a circular, carbon-neutral economy but may be most realistic one. E-waste, being concentrated waste, faces serious reservations regarding handling large-scale...

10.1016/j.gexplo.2022.107000 article EN cc-by Journal of Geochemical Exploration 2022-04-23

10.1016/j.jece.2017.08.001 article EN Journal of environmental chemical engineering 2017-08-02
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