Optimization of Fenton and photo-Fenton-based advanced oxidation processes for post-treatment of composting leachate of municipal solid waste by an activated sludge process

Mahdad, Faezeh; Younesi, Habibollah; Bahramifar, Nader; Hadavifar, Mojtaba

doi:10.1007/s12205-015-1045-1

Cited by 30 publications

(11 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With regard to photo-Fenton (pH of 4.5, 0.75 g/L FeSO 4 , and 1 ml/H 2 O 2 ), 73.8% COD and 83.6% colour were removed. Results also indicated that the biodegradability of the effluent increased with the photo-Fenton process (BOD 5 /COD of 0.52 compared to 0.2) (Mahdad et al 2016).…”

Section: Aops For the Post-treatment Of Biologicallytreated Compostinmentioning

confidence: 91%

Composting leachate: characterization, treatment, and future perspectives

Roy

Azaïs

Benkaraache

et al. 2018

Rev Environ Sci Biotechnol

View full text Add to dashboard Cite

The increasing production of waste has led to one of the major environmental challenges of today: waste management. A solution to this problem is the composting of organic wastes. While the composting process transforms organic wastes into biologically stable compost, large amounts of highly contaminated leachates that present a direct risk to the environment are also produced. First off, this review discusses the origin and nature of contaminants found in composting leachates. In a general perspective, composting leachates are characterized by the presence of high concentrations of moderately biodegradable organic matter and nutrients and contain toxic pollutants such as heavy metals and plasticizers. Treatment technologies that have been studied are subsequently reported and discussed (treatment efficiencies and operating costs). This review highlights the lack of available solutions to efficiently remove all contaminants found in these leachates, which is a major concern considering the increasing number of composting facilities. While both, membrane bioreactors and reverse osmosis, show promising results with NH 4 , COD and TSS removals of [ 70, [ 85 and [ 99.9%, respectively, the resulting effluent remains hazardous for the environment. Further studies are required to assess the use of a combination of biological and advanced oxidation process for the production of a safely disposable effluent.

show abstract

Section: Aops For the Post-treatment Of Biologicallytreated Compostinmentioning

confidence: 91%

Composting leachate: characterization, treatment, and future perspectives

Roy

Azaïs

Benkaraache

et al. 2018

Rev Environ Sci Biotechnol

View full text Add to dashboard Cite

show abstract

“…Since wastewater contains many chemical scavengers, a continuous flow of oxidants must therefore be ensured to achieve complete degradation or mineralisation of the contaminants. Efficient and low cost of treatment in AOPs can be achieved through the combined application of AOPs in a single system with potentially no or low chemical and energy inputs (Mahdad et al 2015). This ensures synergistic effects, with the combined efficiency greater than the sum of individual efficiencies that could be achieved with a separate treatment ( Table 2).…”

Section: Advanced Oxidation Processesmentioning

confidence: 99%

Treatment of persistent organic pollutants in wastewater using hydrodynamic cavitation in synergy with advanced oxidation process

Badmus

Tijani

Massima

et al. 2018

Environ Sci Pollut Res

120

View full text Add to dashboard Cite

Persistent organic pollutants (POPs) are very tenacious wastewater contaminants. The consequences of their existence have been acknowledged for negatively affecting the ecosystem with specific impact upon endocrine disruption and hormonal diseases in humans. Their recalcitrance and circumvention of nearly all the known wastewater treatment procedures are also well documented. The reported successes of POPs treatment using various advanced technologies are not without setbacks such as low degradation efficiency, generation of toxic intermediates, massive sludge production, and high energy expenditure and operational cost. However, advanced oxidation processes (AOPs) have recently recorded successes in the treatment of POPs in wastewater. AOPs are technologies which involve the generation of OH radicals for the purpose of oxidising recalcitrant organic contaminants to their inert end products. This review provides information on the existence of POPs and their effects on humans. Besides, the merits and demerits of various advanced treatment technologies as well as the synergistic efficiency of combined AOPs in the treatment of wastewater containing POPs was reported. A concise review of recently published studies on successful treatment of POPs in wastewater using hydrodynamic cavitation technology in combination with other advanced oxidation processes is presented with the highlight of direction for future research focus.

show abstract

“…Therefore, an advanced oxidation process is one of the alternative processes for the treatment of refractory organic compounds [7]. Among various advanced oxidation process, catalytic wet peroxidation (CWPO) received rapid attention because it may non-selectively degrade the non-biodegradable compounds into harmless or simple compounds in the presence of oxidant using homogeneous/heterogeneous catalyst under atmospheric pressure and moderate temperature (below 80°C) [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous degradation of nitrogenous heterocyclic compounds by catalytic wet-peroxidation process using box-behnken design

Gosu¹,

Arora

Subbaramaiah

2019

Environmental Engineering Research

View full text Add to dashboard Cite

The present study investigates the feasibility of nitrogenous heterocyclic compounds (NHCs) (Pyridine-Quinoline) degradation by catalytic wet peroxidation (CWPO) in the presence of nanoscale zerovalent iron supported on granular activated carbon (nFe0/GAC) using statistical optimization technique. Response surface methodology (RSM) in combination with Box-Behnken design (BBD) was used to optimize the process parameters of CWPO process such as initial pH, catalyst dose, hydrogen peroxide dose, initial concentration of pyridine (Py) and quinolone (Qn) were chosen as the main variables, and total organic carbon (TOC) removal and total Fe leaching were selected as the investigated response. The optimization of process parameters by desirability function showed the ~85% of TOC removal with process condition of initial solution pH 3.5, catalyst dose of 0.55 g/L, hydrogen peroxide concentration of 0.34 mmol, initial concentration of Py 200 mg/L and initial concentration of Qn 200 mg/L. Further, for TOC removal the analysis of variance results of the RSM revealed that all parameter i.e. initial pH, catalyst dose, hydrogen peroxide dose, initial concentration of Py and initial concentration of Qn were highly significant according to the p values (p < 0.05). The quadratic model was found to be the best fit for experimental data. The present study revealed that BBD was reliable and effective for the determination of the optimum conditions for CWPO of NHCs (Py-Qn).

show abstract

Optimization of Fenton and photo-Fenton-based advanced oxidation processes for post-treatment of composting leachate of municipal solid waste by an activated sludge process

Cited by 30 publications

References 34 publications

Composting leachate: characterization, treatment, and future perspectives

Composting leachate: characterization, treatment, and future perspectives

Treatment of persistent organic pollutants in wastewater using hydrodynamic cavitation in synergy with advanced oxidation process

Simultaneous degradation of nitrogenous heterocyclic compounds by catalytic wet-peroxidation process using box-behnken design

Contact Info

Product

Resources

About