Synthesis of zeolite type analcime from industrial wastes

Mencía, Raquel Vigil de la Villa; Ocejo, Marta; Giménez, Rosario García

doi:10.1016/j.micromeso.2019.109817

Cited by 25 publications

(12 citation statements)

References 37 publications

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“…The solid wastes containing silica (SiO 2 ) and alumina (Al 2 O 3 ), including industrial waste forms [ 25 , 26 , 27 , 28 , 29 , 30 ] (i.e., paper sludge, coal fly ash, fly ash from heavy fuel oil (HFO) combustion, and oil shale ash) such as alumino-silicate clays [ 31 , 32 , 33 , 34 , 35 ] and biomass [ 36 , 37 , 38 ] could be converted into ecological adsorbents (zeolite). To date, several physico-chemical and solvothermal techniques, including the hydrothermal approach [ 39 , 40 , 41 ], alkali-fusion method [ 42 , 43 , 44 ], sol-gel method [ 45 , 46 , 47 ], microwave method [ 48 , 49 , 50 , 51 ], and alkali-leaching method [ 52 , 53 , 54 , 55 ], have been adopted and developed to produce synthetic adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

2023

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The increase of global environmental restrictions concerning solid and liquid industrial waste, in addition to the problem of climate change, which leads to a shortage of clean water resources, has raised interest in developing alternative and eco-friendly technologies for recycling and reducing the amount of these wastes. This study aims to utilize Sulfuric acid solid residue (SASR), which is produced as a useless waste in the multi-processing of Egyptian boiler ash. A modified mixture of SASR and kaolin was used as the basic component for synthesizing cost-effective zeolite using the alkaline fusion-hydrothermal method for the removal of heavy metal ions from industrial wastewater. The factors affecting the synthesis of zeolite, including the fusion temperature and SASR: kaolin mixing ratios, were investigated. The synthesized zeolite was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), particle size analysis (PSD) and N2 adsorption-desorption. The SASR: kaolin weight ratio of 1:1.5 yields faujasite and sodalite zeolite with 85.21% crystallinity, which then shows the best composition and characteristics of the synthesized zeolite. The factors affecting the adsorption of Zn2+, Pb2+, Cu2+, and Cd2+ ions from wastewater on synthesized zeolite surfaces, including the effect of pH, adsorbent dosage, contact time, initial concentration, and temperature, have been investigated. The obtained results indicate that a pseudo-second-order kinetic model and Langmuir isotherm model describe the adsorption process. The maximum adsorption capacities of Zn2+, Pb2+, Cu2+, and Cd2+ ions onto zeolite at 20 °C were 12.025, 15.96, 12.247, and 16.17 mg·g−1, respectively. The main mechanisms controlling the removal of these metal ions from aqueous solution by synthesized zeolite were proposed to be either surface adsorption, precipitation, or ion exchange. The quality of the wastewater sample obtained from the Egyptian General Petroleum Corporation (Eastern Desert, Egypt) was highly improved using the synthesized zeolite and the content of heavy metal ions was significantly reduced, which enhances the utilization of the treated water in agriculture.

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Section: Introductionmentioning

confidence: 99%

Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

2023

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“…The SLMCT 2 and PLMCT 3 morphology demonstrate the analcime formation as a new mineralogical phase with poorly defined crystalline faces as it has been reported before. In both cases SLMCT 2 and PLMCT 3 coexist with the muscovite and silica aggregates of the raw material MC [ 46 ]. Over the surface of LMC, SLMCT 2 and PLMCT 3 there were determined the existence of small particles, which are attributed to the thin layer of iron—manganese (oxy)hydroxide as functional groups further phosphate adsorption.…”

Section: Resultsmentioning

confidence: 99%

Fe3+/Mn2+ (Oxy)Hydroxide Nanoparticles Loaded onto Muscovite/Zeolite Composites (Powder, Pellets and Monoliths): Phosphate Carriers from Urban Wastewater to Soil

et al. 2022

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The development of an efficient adsorbent is required in tertiary wastewater treatment stages to reduce the phosphate–phosphorous content within regulatory levels (1 mg L−1 total phosphorous). In this study, a natural muscovite was used for the preparation of muscovite/zeolite composites and the incorporation of Fe3+/Mn2+ (oxy)hydroxide nanoparticles for the recovery of phosphate from synthetic wastewater. The raw muscovite MC and the obtained muscovite/sodalite composite LMC were used in the powder form for the phosphate adsorption in batch mode. A muscovite/analcime composite was obtained in the pellets PLMCT3 and monolith SLMCT2 forms for the evaluation in fixed-bed mode for continuous operation. The effect of pH, equilibrium and kinetic parameters on phosphate adsorption and its further reuse in sorption–desorption cycles were determined. The characterization of the adsorbents determined the Fe3+ and Mn2+ incorporation into the muscovite/zeolite composite’s structure followed the occupancy of the extra-framework octahedral and in the framework tetrahedral sites, precipitation and inner sphere complexation. The adsorbents used in this study (MC, LMC, PLMCT3 and SLMCT2) were effective for the phosphate recovery without pH adjustment requirements for real treated wastewater. Physical (e.g., electrostatic attraction) and chemical (complexation reactions) adsorption occurred between the protonated Fe3+/Mn2+ (oxy)hydroxy groups and phosphate anions. Higher ratios of adsorption capacities were obtained by powder materials (MC and LMC) than the pellets and monoliths forms (PLMCT3 and SLMCT2). The equilibrium adsorption of phosphate was reached within 30 min for powder forms (MC and LMC) and 150 min for pellets and monoliths forms (PLMCT3 and SLMCT2); because the phosphate adsorption was governed by the diffusion through the internal pores. The adsorbents used in this study can be applied for phosphate recovery from wastewater treatment plants in batch or fixed-bed mode with limited reusability. However, they have the edge of environmentally friendly final disposal being promissory materials for soil amendment applications.

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“…4,5 Furthermore, Minagawa et al reported that recycling concrete as a roadbed material decreases the quality of the concrete. 5 Therefore, alternatively, waste concrete has been effectively used in compression molds 4 ; preparation of botanical concrete by compression molding of natural fiber and waste concrete 5,12 ; development of adsorbent materials for CO 2 removal 1,13 ; fabrication of glass ceramics 14 and ceramics 15,16 ; synthesis of zeolites [17][18][19] ; development of fillers or reinforcement materials for polymer composites [20][21][22] ; and preparation of geopolymer concrete mixes. 23,24 Typically, clay is used as a filler in polymer composites.…”

Section: Introductionmentioning

confidence: 99%

“…Concrete is classified as siliceous concrete 6,17,19 or calcareous concrete [44][45][46] depending on the aggregate characteristics. Our previous report 22 investigated a composite material prepared using calcareous waste concrete powder with a chemical composition comprising 27.5% SiO 2 , 57.3% CaO, and 5.86% Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Compression molding of polypropylene‐ and polyethylene‐based composite materials using siliceous waste concrete powder

Kanda

2024

Polymer Composites

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This study investigated the applicability of siliceous waste concrete powder (WCP‐S) as a reinforcing particle in plastic composite materials for effectively utilizing waste concrete. WCP‐S was obtained by milling waste concrete. Two types of resin materials, polypropylene (PP) and polyethylene (PE), were used as the matrix of the composite material. Composite materials were fabricated via compression molding, and the effect of the WCP‐S content on the mechanical properties of the composite materials was investigated. The flexural strength of the PP‐based material decreased with increasing WCP‐S content, whereas the flexural modulus increased. This result suggests insufficient interfacial adhesion between the matrix resin and WCP‐S in the plastic region with high flexural load. To improve this interfacial adhesion, we investigated the mechanical properties of the PE‐based composite material. The flexural strength remained almost constant on increasing the WCP‐S content in the PE‐based composite material, whereas the flexural strength increased. Therefore, WCP‐S is a promising reinforcement particle with an improved flexural modulus for PP or PE resins.Highlights Plastic composite material was fabricated using WCP‐S. The flexural strength of PP‐based composite material decreased. The flexural strength of PE‐based composite material remained almost constant. Flexural modulus increased the PP‐ and PE‐based composite material. WCP‐S is a promising reinforcement particle for PP/PE resins.

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Synthesis of zeolite type analcime from industrial wastes

Cited by 25 publications

References 37 publications

Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

Synthesized Zeolite Based on Egyptian Boiler Ash Residue and Kaolin for the Effective Removal of Heavy Metal Ions from Industrial Wastewater

Fe3+/Mn2+ (Oxy)Hydroxide Nanoparticles Loaded onto Muscovite/Zeolite Composites (Powder, Pellets and Monoliths): Phosphate Carriers from Urban Wastewater to Soil

Compression molding of polypropylene‐ and polyethylene‐based composite materials using siliceous waste concrete powder

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