Performance of combined persulfate/aluminum sulfate for landfill leachate treatment

Salem S Abu Amr; Abbas F M Alkarkhi; Tamer M Alslaibi; Mohammed Shadi S Abujazar

doi:10.1016/j.dib.2018.05.111

Performance of combined persulfate/aluminum sulfate for landfill leachate treatment

Data Brief. 2018 May 24:19:951-958. doi: 10.1016/j.dib.2018.05.111. eCollection 2018 Aug.

Authors

Salem S Abu Amr¹, Abbas F M Alkarkhi¹, Tamer M Alslaibi², Mohammed Shadi S Abujazar³

Affiliations

¹ MICET),Melaka,Malaysian Institute of Chemical and Bioengineering Technology, Universiti Kuala Lumpur (UniKl, MICET), Alor Gajah 78000, Melaka, Malaysia.
² Civil Engineering Department, Palestine University, Gaza Strip, Palestine.
³ Faculty of sciences, Al-Aqsa University, Gaza, Palestine.

Abstract

Although landfilling is still the most suitable method for solid waste disposal, generation of large quantity of leachate is still considered as one of the main environmental problem. Efficient treatment of leachate is required prior to final discharge. Persulfate (S₂O₈^2-) recently used for leachate oxidation, the oxidation potential of persulfate can be improved by activate and initiate sulfate radical. The current data aimed to evaluate the performance of utilizing Al₂SO4 reagent for activation of persulfate to treat landfill leachate. The data on chemical oxygen demand (COD), color, and NH₃-H removals at different setting of the persulfate, Al₂SO₄ dosages, pH, and reaction time were collected using a central composite design (CCD) were measured to identify the optimum operating conditions. A total of 30 experiments were performed, the optimum conditions for S₂O₈^2-/Al₂SO₄ oxidation process was obtained. Quadratic models for chemical oxygen demand (COD), color, and NH₃-H removals were significant with p-value < 0.0001. The experimental results were in agreement with the optimum results for COD and NH₃-N removal rates to be 67%, 81%, and 48%, respectively). The results obtained in leachate treatment were compared with those from other treatment processes, such as S₂O₈^2- only and Al₂SO₄ only, to evaluate its effectiveness. The combined method (i.e., /S₂O₈^2-/Al₂SO₄) showed higher removal efficiency for COD, color, and NH₃-N compared with other studied applications.

Keywords: Activation; Leachate treatment; Optimization; Oxidation; Persulfate.