Organic and nitrogen load removal from bio-treated landfill leachates by a dual-anode system

Ding, Jing; Jiang, Junqiu; Wei, Liangliang; Geng, Yuxuan; Zhao, Qingliang; Yuan, Yixing; Dionysiou, Dionysios D.

doi:10.1039/c8ew00686e

Cited by 3 publications

(1 citation statement)

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“…As noted in Table 6, most of the works dealt with low concentrations of ammonia (50-2240 mg/L) as compared to the current study with a much higher concentration of 3471 mg/L. Ammonia removal efficiencies of 14% to 37% were reported in most studies, except by [65] where 80 removal efficiency of ammonia was reported at longer electrolysis time (2 hours) by using dual-electrode anode and much lower ammonia concentration (50-110 mg/L). Whereas, this current research uses more economical operating parameters (Al anode) and less treatment duration (60 min).…”

Section: Comparison Of Treatment Performancementioning

confidence: 57%

Optimization and Analysis of Zeolite Augmented Electrocoagulation Process in the Reduction of High-Strength Ammonia in Saline Landfill Leachate

Hamid

Aziz

Yusoff

et al. 2020

Water

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This work examined the behavior of a novel zeolite augmented on the electrocoagulation process (ZAEP) using an aluminum electrode in the removal of high-strength concentration ammonia (3471 mg/L) from landfill leachate which was saline (15.36 ppt) in nature. For this, a response surfaces methodology (RSM) through central composite designs (CCD) was used to optimize the capability of the treatment process. Design-Expert software (version 11.0.3) was used to evaluate the influences of significant variables such as zeolite dosage (100–120 g), current density (540–660 A/m2), electrolysis duration (55–65 min), and initial pH (8–10) as well as the percentage removal of ammonia. It is noted that the maximum reduction of ammonia was up to 71%, which estimated the optimum working conditions for the treatment process as follows: zeolite dosage of 105 g/L, the current density of 600 A/m2, electrolysis duration of 60 min, and pH 8.20. Furthermore, the regression model indicated a strong relationship between the predicted values and the actual experimental results with a high R2 of 0.9871. These results provide evidence of the ability of the ZAEP treatment as a viable alternative in removing high-strength landfill leachate of adequate salinity without the use of any supporting electrolyte.

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Section: Comparison Of Treatment Performancementioning

confidence: 57%