Title : Effect of pH and temperature on biosorption of trichlorophenol on macroalgae biomass new adsorbent
The utmost important parameters affecting the adsorption chlorophenolic compounds pollutants from aqueous media are the pH and temperature. Therefore, and in order to more completely understand, their effects on the adsorption isotherm and thermodynamic of 2,4,6 trichlorophenol (TCP) as a model phenolic compound on a Biochar-derived Boveanum Macroalgae (BCM) as new adsorbent were investigated. It has been found that the adsorption capacity of BCM for low concentration TCP compound increases with increasing the solution pH between 2 to 10. However, at TCP high concentration the adsorption capacity increases with increasing the solution pH from 2 to 8 then decreases between 8 and 10. The adsorption experimental data at different concentration and pH were fitted with different adsorption isotherm and it has been found that the adsorption of TCP on BCM fits Langmuir and Freundlich models. The thermodynamic parameters (free energy (?G), the enthalpy (?H) and entropy of adsorption (?S)) were calculated and it has been found that the adsorption of TCP on BCM is endothermic and thermodynamically favorable. The finding revealed that the biochar derived from Boveanum macroalgae (BCM) adsorbent might be used in the removal of TCP phenolic compound from high salinity seawater with removal efficiency up to 60 % and reusability for at least three times.
Audience take away:
- Removal of phenolic compounds from a contaminated water is a significant issue for protection of the environment.
- A sustainable and low-cost biomass adsorbent was prepared from a macroalgae and investigated for the removal of Trichlorophenol as a representative phenolic compound.
- The effect of pH and temperature, as the most important parameters affecting the adsorption chlorophenolic compounds pollutants from aqueous media, were studied at different TCP concentration and temperature. This to fully understand the removal mechanism.
- The adsorption thermodynamic of TCP molecules on the biochar-derived from Boveanum macroalgae as a new bioadsorbent were studied and reported.
- The prepared biomass adsorbent has the capability to remove TCP from contaminated seawater up to 60 % with 25mg adsorbent mass. Moreover, it is reusable for at least three times.
Therefore, this work it is expected to attract attention of audience and other researchers.