Waste Water Treatment

Development of cost effective waste water treatment technologies is a major research agenda of the Environmental Science Department to maintain  water quality in lakes and rivers.  of  bodies of assessment. Research and thesis outputs to clean up  hog farm effluents, mine tailings, distillery effluents and domestic waste waters have been worked on. The green technologies currently being studied are the utilization of indigenous biodiversity such as the dried seaweeds Sargasum sp. and Turbinaria ornata and water hyacinth are evaluated on the potential for the sorption of metals. Metal recovery is also conducted with a series of sorption-desorption experiments.  used as possible medium for heavy metal biosorption. Natural filtering materials such as clinoptilolite have been identified to clean up hog farm wastes. Other technologies are experiments on constructed wetlands using indigenous plant species with the objective of understanding the effectiveness of removing excess nutrients from  effluents.

In a number of experiments, Sargassum sp. has been proven  to absorb significant amounts of lead, copper, mercury and cadmium in waste water. Wastewater treatment technologies involve the use of chemical sorbents which can be expensive  and can produce toxic chemical by-products. The biosorption process is a viable alternative to clean metals with corresponding metal recovery.. The biomass used can also be recycled to  increase the efficiency of the process.


Representative Publications

Ingeniero, R; Boren, M; Tan, E. and  Perez, T. 2010. Biosorption of Pb, Cu, Cd and Hg by Brown Seaweeds Sargassum sp. and Turbinaria ornata. Proceedings of the 32nd  Annual Scientific Meeting of the National Academy for Science and Technology (NAST).Manila Hotel. 13-14 July 2011.

Ingeniero, R; Cunanan, S. and  Perez, T. . 2010. Equilibrium Isotherms and Kinetics of Biosorption of Dried Biomass of Eichhornia crassipes. Proceedings  of the 5th Conference on Philippine Competitiveness through ERDT. ISSN 2094-2516.

Jacinto Mljaj , David, C.P.C., Perez, T. R. and De Jesus, B.R. 2008, Comparative efficiency of algal biofilters in the removal of chromium and copper from wastewater, Ecol. Eng. 5.

Diangan, M., T. Perez and R. Claveria. 2008. Analysis of land application as a method of  disposal for distillery effluent. Int. J. Environment and Health. 2 (2): 258 – 271.

Hufemia, A.M.M., Espiritu, E.Q. and Lubo P, 2006, Preliminary study on the polishing efficiency of Clinoptilolite in the tertiary treatment of hog farm effluents, The Loyola School Review, 5, pp 81-91.

Contact Information

Teresita R. Perez, Ph.D.
Emilyn Espiritu, Ph.D.
Abigail T. Favis
Department of Environmental Science

Office Address: 3rd Floor, Manila Observatory

Email: tperez@ateneo.edu

Telephone: +632.426.6001 loc. 5650

Fax: +632.426.4321