A new potential of scalable method for the production of calcium carbonate by Bacillus sphaericus in batch fermentation

  • Nuraiffa Syazwi Adzami Division of Polymer Engineering School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
  • Miskiah Fadzilah Ghazali Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
  • Amira Hidayati Ramli Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
  • Husnul Azan Tajarudin Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
  • Zawawi Daud
Keywords: Calcium carbonate precipitation, Bacillus sphaericus, urea hydrolysis, submerged fermentation, inetic Study

Abstract

Bacteria is believed to induce calcium carbonate precipitation as it meets the concept of bioconcrete. Bacillus sphaericus was found to produce enzyme urease capable to hydrolyse urea, thus generate carbonate ions.  The excess presence of calcium ions in the system will precipitate calcium carbonate.  Therefore, the used of bioreactor to produce calcium carbonate can meet the demand for calcium carbonate as it can be produced in large-scale production thus maximize the production of calcium carbonate. The aim of this paper conducted by using 2.5 L bioreactor was to investigate the precipitation of CaCO3 and to optimize the production of H2CO3 by using different parameters such as agitation and aeration. As this is a preliminary study, the artificial urea is used as the carbon source of the Bacillus sphericus. The determination of the kinetics of CaCO3 precipitation in the 2.5 L batch bioreactor such as specific growth rate (µ) and doubling time (Td) were studied after fermentations were stopped. The composition of calcium carbonate characteristic from the fermentation of Bacillus Sphaericus in 2.5 L bioreactor of pH 8.0 and 30 °C were proved by X-Ray Diffraction. The highest specific growth rate (0.141 h-1) was determined from 50 rpm with 2.0 vvm aeration rate.  The optimum parameters condition to produce bicarbonate ions and calcium carbonate was at 50 rpm with 2.0 vvm aeration rate.

Author Biographies

Nuraiffa Syazwi Adzami, Division of Polymer Engineering School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Degree in Bioprocess Technology. Currently, Msc in Polymer Engineering.
Miskiah Fadzilah Ghazali, Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
Degree in Minerals Resources, MSc in Environmental Technology. Currently, a Ph.D. student of Bioprocess Technology
Amira Hidayati Ramli, Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
Degree in Bioprocess Technology
Husnul Azan Tajarudin, Division of Bioprocess School of Industrial Technology Universiti Sains Malaysia 11800, USM, Pulau Pinang
Degree in Civil Engineering, Msc in Environmental Engineering and Phd in Chemical Engineering (Bioprocess)
Published
2019-01-01
How to Cite
Adzami, N. S., Ghazali, M. F., Ramli, A. H., Tajarudin, H. A., & Daud, Z. (2019). A new potential of scalable method for the production of calcium carbonate by Bacillus sphaericus in batch fermentation. International Journal of Integrated Engineering, 10(9). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2406

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