Vol. 16 No. 6 (2021)

In this research, the use of laterite in natura for the removal of phosphorus in domestic effluents was investigated. The three parts of this graphic illustrate the interaction of the variables used in the study as follows: a) dosage of adsorbent material and pH; b) pH and contact time; and, c) dosage of adsorbent material and contact time in relation to the removal rate of phosphorus. The best adsorption occurred at pH 4 and other low pH values. High pH conditions affect the surface load of the adsorbent decreasing the adsorption rate. Laterite proved to be effective for the removal of phosphorus in synthetic effluents and can be used in filtering units to remove pollutants. Simplified techniques such as this can be used to meet the demand of the population without access to water treatment and distribution.

Source: SOARES, A.C.Da.S. et al. Low-cost material as active substrates for the removal of phosphorus in synthetic effluents: a proposal for social treatment technology. Rev. Ambient. Água, Taubaté, vol. 16 n. 6, p. 1-15, 2021. doi:10.4136/ambi-agua.2770