Manufacturing non-sintered ceramsite from incinerated municipal solid waste ash (IMSWA): Production and performance

Xu, Fang; Liu, Wei; Bu, Shi; Zhang, Lin; Fang, Jiamei; Yu, Zhikang; Xu, Weigang; Ding, Hong; Huo, Guangtian

doi:10.1016/j.psep.2022.05.007

Cited by 21 publications

(4 citation statements)

References 32 publications

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Section: Resultsmentioning

confidence: 99%

“…Due to the solidification action of ceramsite on heavy metals, ceramsite's heavy metal leaching concentration is far below the maximum (Chen et al, 2020). In fact, ceramsite acquired stable properties upon sintering (Xu et al, 2022). pH values lower than 7, and the positive ions H + and NH 4 + -N have a competitive adsorption process on the adsorbent (Alshameri et al, 2014).…”

Section: Heavy Metal Concentrations That Leach From Ceramsitesmentioning

confidence: 99%

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Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

Shen

Zhou

et al. 2023

Water Environment Research

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Excessive ammonium and phosphate in aquatic settings may produce major eutrophication. Adsorbents can be used to reduce the eutrophication of natural water bodies. In this study, a sustainable and efficient ceramic adsorbent (sludge/biomass ash ceramsite [SBC]) was prepared by using sludge and biomass ash with a weight ratio of 1:1; the sintering parameters were 1070°C for 15 min. The NH4+‐N and P adsorption capabilities were improved by utilizing 1 mol L−1 NaOH and 1.6 mol L−1 La(NO3)3·6H2O for modification. When the pH and duration were 7 and 1440 min, respectively, the maximum bending capacity of ammonia nitrogen and phosphorus was 3.2 and 2.1 mg g−1 at 308 K. The pseudo‐second‐order kinetic model better describes the adsorption dynamics of NH4+‐N and P, whereas the Langmuir model better describes the adsorption isotherm models of NH4+‐N and P. The adsorption mechanism of SBC‐NaOH on NH4+‐N is ion exchange between Na+ and NH4+, whereas the adsorption mechanism of SBC‐La on phosphorus is ion exchange and La3+ adsorption. SBC combines efficient wastewater purification with the reuse of solid waste. The findings gave rise to the possibility of recycling ceramics as a plant fertilizer with a delayed release in the future. Practitioner Points New ceramsite was made from sludge and biomass ash. NH4+‐N (3.2 mg g−1) and P (2.1 mg g−1) were effectively adsorbed by ceramsite. The mechanism of NH4+‐N and P adsorption by ceramsite was studied. Absorbed ceramsite can be used as slow‐release fertilizer in plant cultivation.

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Section: Resultsmentioning

confidence: 99%

Section: Heavy Metal Concentrations That Leach From Ceramsitesmentioning

confidence: 99%

Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

Shen

Zhou

et al. 2023

Water Environment Research

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“…The combination of these constituents synergistically influences the hydration and carbonation reaction in the cementitious system, contributing to its improved performance and properties. Calcite can be generated from C 2 S and C 3 S in cement, as shown in Formulas (10) and (11). Calcite is mainly generated from the hydration products Ca(OH) 2 , C-S-H gel and ettringite(AFt), as shown in Formulas ( 12)-( 14) [39].…”

Section: Xrd Analysismentioning

confidence: 99%

“…Processes 2024, 12, 289 2 of 20 CFBFA ceramsite has been prepared by sintering method, but no low energy consumption method has been proposed. In comparison to sintered ceramsite, non-sintered ceramsite offers several advantages including low cost, a simple production method, lightweight construction, high strength, and environmental friendliness [11]. While most of the current research focuses on the high-temperature preparation of sintered ceramsites, there is relatively less emphasis on studying the production and performance of non-sintered ceramsites.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ternary Activator for Enhancing Mechanical Properties of Carbonized Cementitious Material Based on Circulating Fluidized Bed Fly Ash

Xu,

Ma,

Wang

et al. 2024

Processes

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In this study, circulating fluidized bed fly ash (CFBFA) non-sintered ceramsite was innovatively developed. The CFBFA was addressed by adding ternary activator (including cement, hydrated lime, and gypsum) to prepare ceramsite. In the curing process, the use of power plant flue gas for curing not only captured greenhouse gas CO2, but also enhanced the compressive strength of the ceramsite. The compressive strength of the composite gravels prepared by the CFBFA was modeled using a novel approach that employed the response surface methodology (RSM) and artificial neural network (ANN) coupled with genetic algorithm (GA). Box–Behnken design (BBD)-RSM method was used for the independent variables of cement content, hydrated lime content, and gypsum content. The resulting quadratic polynomial model had an R2 value of 0.9820 and RMSE of 0.2215. The BP-ANN with a structure of 3-10-1 performed the best and showed better prediction of the response than the BBD-RSM model, with an R2 value of 0.9932 and RMSE of 0.1940. The process parameters were optimized using RSM optimization tools and GA. Validation experiments showed that the GA-ANN prediction results were more accurate than the BBD-RSM results.

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Fabrication of hierarchically porous CHA-type zeolite composites derived from industrial solid waste for cesium removal

Zhang

Ren

Dong

et al. 2023

J Sol-Gel Sci Technol

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Manufacturing non-sintered ceramsite from incinerated municipal solid waste ash (IMSWA): Production and performance

Cited by 21 publications

References 32 publications

Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

Optimization of Ternary Activator for Enhancing Mechanical Properties of Carbonized Cementitious Material Based on Circulating Fluidized Bed Fly Ash

Fabrication of hierarchically porous CHA-type zeolite composites derived from industrial solid waste for cesium removal

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