Determination of leachate compounds relevant for landfill aftercare using FT-IR spectroscopy

Lenz, Sabine; Böhm, Katharina; Ottner, Reinhold; Huber-Humer, Marion

doi:10.1016/j.wasman.2016.02.034

Cited by 34 publications

(8 citation statements)

References 22 publications

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“…The band at 1610 cm –1 is due to the vibration of CC in the aromatic nucleus. The vibration at 1100 cm –1 is related to the vibration mode of C–O–C. ,− In brief, the FTIR observation confirms that the as-prepared RNC-0 and RNC-2 contains lots of −OH.…”

Section: Results and Discussionmentioning

confidence: 59%

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Wang,

Liu,

Yuan

et al. 2024

ACS Sustainable Resour. Manage.

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Methylene blue (MB) is a water-soluble organic compound with a complex chemical structure and stable properties, which is difficult to remove. In this work, a high specific surface area MB dye adsorbent of 3D hierarchical porous derived carbon was obtained from moldy rice noodles (RN) through high-temperature carbonization and strong alkali etching. The morphology and structural properties, pore structure, specific surface area, and crystallinity of RN carbon (RNC) are analyzed. The adsorption properties of RNC for MB dye molecules are studied, including the influence of different activator (KOH) ratios, the influence of initial concentration of dye, and the influence of adsorption kinetics and thermodynamics on the adsorption of dye. The results show that the optimal ratio of RN to activator is 1:2 (RNC-2), and its specific surface area is the highest, reaching 1693.31 m 2 /g. At 298 K, the maximum theoretical adsorption capacity of RNC-2 is 626.25 mg/g, and at 333 K, the maximum theoretical adsorption capacity is 827.34 mg/g. This work shows that the derived carbon material obtained from moldy RN is a kind of adsorbent material with excellent properties and has a great application prospect in purifying industrial wastewater. This work also means that moldy RN can be recycled rather than discarded. In addition, this material can also be used in fields such as energy storage and catalysis in the future.

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Section: Results and Discussionmentioning

confidence: 59%

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Wang,

Liu,

Yuan

et al. 2024

ACS Sustainable Resour. Manage.

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“…Figure shows the FTIR adsorption spectrum of the influent (a) and effluent (b) of the Fe 0 /PS/O 3 process under the optimal operating conditions after 30 min treatment. The absorbance bands are interpreted by information from other literature . The result suggests that the benzene ring had been opened and some pollutants were transformed or decomposed.…”

Section: Resultsmentioning

confidence: 99%

Treatment of reverse osmosis (RO) concentrate from an old landfill site by Fe⁰/PS/O₃ process

Zhang

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND: Large volume of landfill leachate concentrate was generated from membrane treatment process, which contained large amount of toxic and refractory compounds. However, there is a lack of proper technologies for the treatment of membrane filtration concentrates. RESULTS: An effective method for treatment of landfill leachate reverse osmosis (RO) concentrate by Fe 0 /PS/O 3 process was investigated to decompose the refractory pollutants and improve the biodegradability. First, the operating conditions includingFe 0 dosage, ozone aeration rate, PS (S 2 O 8 2− ) dosage and initial pH were optimized through single-factor experiment and response surface methodology (RSM) in this study. The results show that the method could obtain high COD (84.1%) and color (99%) removal efficiencies after 30 min treatment under the optimal conditions. Meanwhile, BOD 5 /COD ratio was enhanced from 0.01 to 0.25, which suggests that its biodegradability was improved greatly. The decomposition or transformation of the organic pollutants in RO concentrate was analyzed by UV-vis, EEM and FTIR. Furthermore, the synergetic effect between Fe 0 , PS and O 3 in Fe 0 /PS/O 3 process was investigated according to the present literature and analysis date of SEM-EDS, XRD and XPS. CONCLUSIONS: Collectively, a new Fe 0 /PS/O 3 system was successful developed, and this system could be seemed as a promising technology for the treatment of reverse osmosis concentrate of landfill leachate. Fe 2+ + SO •− 4 → Fe 3+ + SO 2− 4(2)

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“…Within the raw water range of 2000-550 cm −1 (Fig. 8), the main absorption bands were observed at 1662 cm −1 , which were attributed to the C O stretching of amide groups; the bands between 1620 and 1580 cm −1 were assigned to amide groups and aromatic C C conjugated with C O from COO − ; 1500 cm −1 , attributed to the C C bond in aromatic rings and N-H; 1476 cm −1 , assigned to C C, C-H, and N-H bonds 42,43 ; 1440 cm −1 , assigned to the COO − stretch of carboxylic acids; peaks at 1230-1310 cm −1 were attributed to C-N from aromatic amines (primary and secondary) and C-N stretch from secondary amides; inorganic compounds were assigned to peaks at 1018-1012 cm −1 , potentially due to the Si-O and Si-O-Si stretch vibrations of quartz and clay minerals 44 ; the peaks at 833 and 704 cm −1 were assigned to nitrogen containing compounds with N-H wag vibration. 45 The presence of humic compounds and fulvic acids in raw water is verified by the presence of all of the aforementioned bands.…”

Section: Ft-ir Spectra Of Landfill Leachatementioning

confidence: 99%

A novel process for landfill leachate pretreatment using hydrodynamic cavitation combined with potassium ferrate oxidation

Feng

Jin

Qiao

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Efficient pretreatment is key to improving landfill leachate biodegradability. This is the first study to combine hydrodynamic cavitation (HC) and potassium ferrate (K2FeO4) for the treatment of landfill leachate, using chemical oxygen demand (COD) and UV absorbance at a wavelength of 254 nm (UV254) as the main test indicators. The feasibility of HC combined with K2FeO4 as a mature leachate pretreatment method was explored. RESULTS The HC experiment used 40 L of mature landfill leachate raw water, with optimal reaction conditions of: pH 4, 70 min continuous cavitation and K2FeO4 dosage of 1.5 g/L. The leachate COD decreased from 3812.64 mg/L to 1833.8 mg/L (51.69% removal), while UV254 decreased from 20.44 to 6.14 (65.14% removal) and total organic carbon decreased from 1489 to 915.3 mg/L (38.53% removal). After HC/K2FeO4 treatment, the biochemical oxygen demand after 5 days (BOD5)/COD (0.61) was greatly improved compared to the raw leachate (0.362), with effluent reaching the standard (BOD5/COD >0.6) required to be considered fully biodegradable. Studies have shown that HC can accelerate the reaction rate of Fe(VI) with pollutants, while also forming a Fenton‐like system with the products of Fe(VI) reduction. FT‐IR analysis results showed that HC/K2FeO4 treatment achieved the removal of complex high molecular weight compounds, by carbonization or decomposition into more biodegradable substances. CONCLUSION Compared with the traditional pretreatment process, HC/K2FeO4 exhibits strong oxidation and coagulation performance, achieving the significant removal of leachate humus and effectively improving biodegradability, while also being suitable for large‐scale applications, such as landfill leachate treatment. © 2022 Society of Chemical Industry (SCI).

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Determination of leachate compounds relevant for landfill aftercare using FT-IR spectroscopy

Cited by 34 publications

References 22 publications

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Treatment of reverse osmosis (RO) concentrate from an old landfill site by Fe⁰/PS/O₃ process

A novel process for landfill leachate pretreatment using hydrodynamic cavitation combined with potassium ferrate oxidation

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Determination of leachate compounds relevant for landfill aftercare using FT-IR spectroscopy

Cited by 34 publications

References 22 publications

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Three-Dimensional Porous Carbon Material Derived from Moldy Rice Noodles for Highly Efficient Removal of Methylene Blue Dye

Treatment of reverse osmosis (RO) concentrate from an old landfill site by Fe0/PS/O3 process

A novel process for landfill leachate pretreatment using hydrodynamic cavitation combined with potassium ferrate oxidation

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Treatment of reverse osmosis (RO) concentrate from an old landfill site by Fe⁰/PS/O₃ process