Modeling and optimization of hybrid leachate treatment processes and scale-up of the process: Review

Vaz, Carlos Alberto dos Santos; Samanamud, Gisella Rossana Lamas; Silva, Ricardo Soares da; França, Alexandre Bôscaro; Quintão, Cristiane Medina Finzi; Urzedo, Ana Paula Fonseca Maia de; Silva, Messias Borges; Neto, Juan Canellas Bosch; Amaral, Marcos Serrou do; Loures, Carla Cristina Almeida; Naves, Luzia Lima Rezende; Naves, Fabiano Luiz

doi:10.1016/j.jclepro.2021.127732

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…Next, to initiate the Fenton reaction, H 2 O 2 30% (w/w) was added until the H 2 O 2 :Fe 2+ ratio reached the desired amount (2, 4, 6, 8, and 10). The procedure was followed by a rapid mixing (250 rpm) for 80 s in a jar-test, before the rotation speed slowed down to 50 rpm for predetermined contact time (5,18.75, 32.5, 46.25, and 60 min). Once completed, the sample was filtered at the same intervals and subsequently neutralized using NaOH until pH 7.5-8.0.…”

Section: Experimental Design and Statistical Modelmentioning

confidence: 99%

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Response Surface Methodology (RSM)-Based Prediction and Optimization of the Fenton Process in Landfill Leachate Decolorization

et al. 2021

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As an advanced oxidative processes, the Fenton process is receiving popularity as a wastewater treatment technique that can be used for hazardous landfill leachate. The treatment is simple, yet involves complex interactions between the affecting parameters including reaction time, H2O2/Fe2+ ratio, pH, and iron (II) ion concentration. Hence, the purpose of this present study was to analyze the factors affecting landfill leachate treatment as well as their interaction by means of response surface methodology (RSM) with central composite design. The independent variables were reaction time, H2O2/Fe2+ ratio, iron (II) ion concentration, and pH, and the dependent variable (response) was color-removal percentage. The optimum treatment conditions for pH, H2O2/Fe2+ ratio, Fe2+ concentration, and reaction time were 8.36, 3.32, 964.95 mg/L, and 50.15 min, respectively. The model predicted 100% color removal in optimum conditions, which was close to that obtained from the experiment (97.68%). In conclusion, the optimized Fenton process using the RSM approach promotes efficient landfill leachate treatment that is even higher than that already reported.

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Section: Experimental Design and Statistical Modelmentioning

confidence: 99%

“…Microorganisms are also present in landfill leachate predominated by total and thermo-tolerant coliforms [2][3][4]. Regardless of its toxicity and recalcitrance, landfill leachate persists in increasing amounts owing to the landfilling methods used for either municipal or industrial solid waste discharge [5].…”

Section: Introductionmentioning

confidence: 99%