Effects of Different Seed Substances on Anaerobic Degradation of Municipal Solid Waste in Recirculated Bioreactor

Ağdağ, Osman Nuri; Aktas, Derya; Şimşek, Ömer

doi:10.1007/s12649-020-00972-z

Cited by 4 publications

(1 citation statement)

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“…Researchers have attempted to implement anaerobic bioreactor technology for effective MSW treatment through leachate decontamination [26]. Simulations of landfilling in anaerobic bioreactors function as anaerobic sludge digesters and facilitate accelerated and economic waste stabilization [27]. The study of integrating biological processes with advanced oxidation processes in simple lab scale reactors is an important stage to enable real-scale integrated applications in the treatment of landfill leachate, which could solve the bottleneck caused by the high toxicity and insufficient carbon source of landfill leachate treatments.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Landfill Leachate Using UV-TiO2 Photocatalysis Combination with Aged Waste Reactors

et al. 2021

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This study explored the performance of TiO2 nanoparticles in combination with aged waste reactors to treat landfill leachate. The optimum conditions for synthesis of TiO2 were determined by a series of characterizations and removal rates of methyl orange. The effect of the ultraviolet irradiation time, amount of the catalyst, and pH on the removal efficiency for the chemical oxygen demand (COD) and color in the leachate was explored to determine the optimal process conditions, which were 500 min, 4 g/L and 8.88, respectively. The removal rates for COD and chroma under three optimal conditions were obtained by the single factor control method: 89% and 70%; 95.56% and 70%; and 85% and 87.5%, respectively. Under optimal process conditions, the overall average removal rates for ammonium nitrogen (NH4+–N) and COD in the leachate for the combination of TiO2 nanoparticles and an aged waste reactor were 98.8% and 32.5%, respectively, and the nitrate (NO3−–N) and nitrite nitrogen (NO2–N) concentrations were maintained at 7–9 and 0.01–0.017 mg/L, respectively. TiO2 nanoparticles before and after the photocatalytic reaction were characterized by emission scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and Fourier transform infrared spectrometry. In addition, TiO2 nanoparticles have excellent recyclability, showing the potential of the photocatalytic/biological combined treatment of landfill leachate. This simulation of photocatalysis-landfilling could be a baseline study for the implementation of technology at the pilot scale.

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Section: Introductionmentioning

confidence: 99%