Efficient treatment for landfill leachate through sequential electrocoagulation, electrooxidation and PMS/UV/CuFe2O4 process

Ghanbari, Farshid; Wu, Junxue; Khatebasreh, Masoumeh; Ding, Dahu; Lin, Kun‐Yi Andrew

doi:10.1016/j.seppur.2020.116828

Cited by 134 publications

(38 citation statements)

References 53 publications

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“…Experiments analyzing toxicity demonstrated that the majority of intermediates were less toxic than their parent pollutant. For example, the toxicity of the detectable intermediates of metolachlor (MET) (Liu C. et al, 2019), landfill leachate (Ghanbari et al, 2020), and carbamazepine (CBZ) (Guo et al, 2020) decreased significantly after PS/PMS oxidation. In contrast, the toxicity of intermediates produced from the degradation of highly concentrated organic wastewater increased significantly because of the formation of some halogenated organics (Wang Q. et al, 2017;Wang et al, 2020); the toxicity of the intermediates of alachlor was comparable to the formation of DBPs after chlorination within the ZVI/PS system (Wang et al, 2020).…”

Section: Degradation Intermediates Of Different Pollutants After Ps/pmentioning

confidence: 99%

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

et al. 2020

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High levels of toxic organic pollutants commonly detected during domestic/industrial wastewater treatment have been attracting research attention globally because they seriously threaten human health. Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been successfully used in wastewater treatment, such as that containing antibiotics, pesticides, and persistent organic pollutants, for refractory contaminant degradation. This review summarizes activation methods, including physical, chemical, and other coupling approaches, for efficient generation of sulfate radicals and evaluates their applications and economic feasibility. The degradation behavior as well as the efficiency of the generated sulfate radicals of typical domestic and industrial wastewater treatment is investigated. The categories and characteristics of the intermediates are also evaluated. The role of sulfate radicals, their kinetic characteristics, and possible mechanisms for organic elimination are assessed. In the last section, current difficulties and future perspectives of SR-AOPs for wastewater treatment are summarized.

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Section: Degradation Intermediates Of Different Pollutants After Ps/pmentioning

confidence: 99%

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

et al. 2020

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“…However, because organic pollutants in the leachate have high content, it makes the methods applied themselves inefficiently. The leachate treatment method needs to include physical and chemical pre-treatment as well as aerobic and anaerobic processes in the biochemical process, then end with the physical and chemical process [9,11]. The combination of aerobic, anaerobic, coagulation, sedimentation, and electrolysis methods formed to treat landfill leachate because it has complex compositions with high biological toxicity.…”

Section: Landfill Leachate Treatmentmentioning

confidence: 99%

The biological treatment method for landfill leachate

2020

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Currently, waste generation in Indonesia is increasing; the amount of waste generated in a year is around 67.8 million tons. Increasing the amount of waste generation can cause other problems, namely water from the decay of waste called leachate. Leachate can contaminate surface water, groundwater, or soil if it is streamed directly into the environment without treatment. Between physical and chemical, biological methods, and leachate transfer, the most effective treatment is the biological method. The purpose of this article is to understand the biological method for leachate treatment in landfills. It can be concluded that each method has different treatment results because it depends on the leachate characteristics and the treatment method. These biological methods used to treat leachate, even with various leachate characteristics, also can be combined to produce effluent from leachate treatment below the established standards.

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“…Hospital wastewaters have low BOD 5 /COD ratio due to many micro and resistant contaminants they contain. The wastewater can be described as biodegradable with BOD 5 /COD ratio of 0.3–0.45 while with BOD 5 /COD ratio in the range of 0.2–0.3, it cannot be easily biodegraded (Ghanbari, Wu, Khatebasreh, Ding, & Lin, 2020). In recent years, for the removal of these types of contaminants and increase the degradability of hospital wastewaters through advanced oxidation processes is being investigated.…”

Section: Introductionmentioning

confidence: 99%

Medical laboratory wastewater treatment by electro‐fenton process: Modeling and optimization using central composite design

Baştürk

Varank

Hocaoğlu

et al. 2020

Water Environment Research

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Medical laboratory wastewaters arising from diagnosis and examination units show highly toxic characteristic. Within the scope of the study, removal of the wastewater’s toxicity and increasing BOD5/COD ratio of the medical laboratory wastewaters through electro‐Fenton (EF) process were investigated. In the study, central composite design was applied to optimize the process parameters of EF for COD, BOD5, and toxicity unit (TU) removal. Based on ANOVA, H2O2/COD was found to be significant parameter for COD removal, whereas current, reaction time, and H2O2/COD were determined to be significant parameters for BOD5 and TU removal. Optimum conditions (pH value of 3.4, current 3 A, reaction time 33.9 min, and H2O2/COD of 1.29) were determined, and predicted removals of COD, BOD5, and TU were found to be 55.1%, 42.5%, and 99.7% and experimental removals were found to be 53.4%, 41.2%, and 99.5%, respectively. TU value of the wastewater decreased from the value of 163–0.815, and BOD5/COD value increased from the value of 0.32–0.39. The results of the study indicate that EF process is an effective treatment option for COD, BOD5, and especially toxicity removal from medical laboratory wastewater. Practitioner points Electro‐Fenton process was applied medical laboratory wastewater with highly toxic characteristic. Response surface methodology approach using central composite design was employed for modeling. 53.4%, 41.2%, and 99.5% of COD, BOD5, and toxicity removals were achieved under statistically optimized conditions. TU value of the wastewater decreased from the value of 163–0.815. BOD5/COD value increased from the value of 0.32–0.39.

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Efficient treatment for landfill leachate through sequential electrocoagulation, electrooxidation and PMS/UV/CuFe2O4 process

Cited by 134 publications

References 53 publications

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

The biological treatment method for landfill leachate

Medical laboratory wastewater treatment by electro‐fenton process: Modeling and optimization using central composite design

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