Green synthesis of ceramsite from industrial wastes and its application in selective adsorption: Performance and mechanism

Sun, Jinke; Zhou, Chuncai; Shen, Hexin; Du, Juan; Li, Quanzhong; Wu, Wentao; Guo, Binglin; Liu, Guijian

doi:10.1016/j.envres.2022.113786

Cited by 26 publications

(5 citation statements)

References 33 publications

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“…NH 4 + ‐N and P were effectively adsorbed to the surface of ceramsite, as shown by the presence of the N1s and P2p peaks (Figure 8a,b). Adsorption is aided by Fe (including Fe(II) and Fe(III)), as seen by the considerable shift in Fe concentration following adsorption (Sun, Zhou, et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the removal efficiency tended to be stable when the adsorbent dosage surpassed 10 g L −1 . Higher adsorbent dose produced more adsorption sites for NH 4 + ‐N and P, which is what caused this event (Sun, Zhou, et al, 2022). Observations revealed that when the quantity of adsorbent rose from 3 to 20 g L −1 , the NH 4 + ‐N adsorption capacity on SBC‐NaOH dropped from 1.6 to 5.5 mg g −1 .…”

Section: Resultsmentioning

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: Resultsmentioning

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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“…During the sintering temperature increase from 1000 • C to 1150 • C, some fusible substances melted to form a glass phase and combined with partially molten quartz to form feldspar minerals, causing the intensity of the quartz diffraction peaks to gradually decrease and the intensity of the feldspar diffraction peaks to gradually increase. The feldspar materials were distributed in a network-like manner, which not only formed a robust skeletal structure that enhanced the strength of the FMC [47] but also provided space for the embedding of cations into the FMC matrix [48]. From 1000 • C to 1100 • C, the original mullite in the fuel ash gradually melted, resulting in a decrease in the intensity of the mullite diffraction peaks; when the temperature increased from 1100 • C to 1150 • C, the amounts of molten substances, such as SiO 2 and Al 2 O 3 , increased, and the newly formed mullite crystals caused the intensities of their diffraction peaks to grow larger.…”

Section: Mineral Compositionmentioning

confidence: 99%

Ceramic Aggregate Material Formulated with MSWI Fly Ash and Fuel Ash for Use as Filter Media

Lü

Chen

et al. 2023

Minerals

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This study aimed to develop a novel filtering medium ceramic aggregate prepared using municipal solid waste incineration (MSWI) fly ash and the fuel ash from coal power plants, together with small amounts of silicon carbide foaming agent and magnesia flux as additives. For the manufacturing process, the dosage of MSWI fly ash and the sintering temperature were optimized to maximize the performance of the resulting materials. Leaching test results indicated that the heavy metal concentrations in the ceramic aggregate were significantly below the limits proposed by GB5085.3-2007, demonstrating its safety for wastewater treatment. The ammonia nitrogen removal efficiency was assessed, and the removal rate of the developed ceramic aggregate was found to be 16.4% higher than that of zeolite, making it comparable to commercial ceramic aggregate. Scanning electron microscopy and X-ray diffractometer analyses were conducted on the ceramic aggregates. The ammonia-nitrogen-removing mechanism, attributed to adsorption and ion exchange, is discussed based on the microstructural analysis results.

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“…However, the synthesis process and conditions were not given. Sun et al [19] prepared a ceramsite adsorbent that could adsorb copper ions continuously and efficiently with CG, pulverized coal, and copper slag as the main raw materials, and the maximum adsorption capacity could reach 20.6 mg/g. Bu et al [20] and Ge et al [21] studied the methods of synthesizing NaY molecular sieves by alkali fusion and hydrothermal with CG as the raw material, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effects of a Cellulose Aerogel Template on the Preparation and Adsorption Properties of Coal Gangue-Based Multistage Porous ZSM−5

et al. 2023

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In this study, a ZSM−5/CLCA molecular sieve was prepared by the hydrothermal method using coal gangue as the raw material and cellulose aerogel (CLCA) as the green templating agent, which not only reduces the cost of traditional molecular preparation but also improves the comprehensive resource utilization rate of coal gangue. Through a series of characterization methods (XRD, SEM, FT-IR, TEM, TG, and BET), the crystal form, morphology, and specific surface area of the prepared sample were tested and analyzed. The performance of the adsorption process of malachite green (MG) solution was analyzed by adsorption kinetics and adsorption isotherm. The results show that the synthesized zeolite molecular sieve and the commercial zeolite molecular sieve are highly consistent. At a crystallization time of 16 h, a crystallization temperature of 180 °C, and an additive amount of cellulose aerogel of 0.6 g, the adsorption capacity of ZSM−5/CLCA for MG was up to 136.5 mg/g, much higher than that of commercially available ZSM−5. This provides an idea for the green preparation of gangue-based zeolite molecular sieves to remove organic pollutants from water. Moreover, the process of adsorbing MG on the multistage porous molecular sieve, which is spontaneous, conforms to the pseudo-second-order kinetic equation and Langmuir isothermal adsorption model.

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Green synthesis of ceramsite from industrial wastes and its application in selective adsorption: Performance and mechanism

Cited by 26 publications

References 33 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

Ceramic Aggregate Material Formulated with MSWI Fly Ash and Fuel Ash for Use as Filter Media

Effects of a Cellulose Aerogel Template on the Preparation and Adsorption Properties of Coal Gangue-Based Multistage Porous ZSM−5

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