White hard clam (Meretrix lyrata) shells media to improve phosphorus removal in lab-scale horizontal sub-surface flow constructed wetlands: Performance, removal pathways, and lifespan

Nguyen, Thi An Hang; Ngo, Huu‐Hao; Guo, Wenshan; Soda, Satoshi; Vu, Ngoc-Thuy; Bui, Thi Kim Anh; Vo, Thi-Dieu-Hien; Bui, Xuan‐Thanh; Nguyen, Thi Thuong; Pham, Tien Thanh

doi:10.1016/j.biortech.2020.123602

Cited by 25 publications

(4 citation statements)

References 34 publications

(58 reference statements)

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“…The FTIR spectra of the adsorbents display significant variations before and after the adsorption process. After the phosphate adsorption process, the strength of the carbonate peaks was altered, indicating the loss of carbonate and the formation of new phosphate minerals [17,18]. This suggests that phosphate was incorporated into the material after adsorption.…”

Section: Adsorption Capacity Q (Mg/g) For Various Particle Sizesmentioning

confidence: 99%

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Noorul Hudai Abdullah,

Muhammad Azreen Mohd Azmi,

Muhammad Afham Mohd Zaidi

et al. 2024

ARFMTS

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Phosphorus is one of essential elements for sustaining life largely through phosphate, a compound containing the phosphate ion, PO43−. However, excessive phosphorus concentrations will cause eutrophication and this condition is considered as an environmental issue. The phosphorus sources are commonly from human activities; for instance, detergents, fertilisers, and industries. Although various adsorption techniques have been applied to remove phosphorus in water, the effect of different particle sizes of calcined marsh clam shells on phosphate removal has not been fully investigated, along with its adsorption kinetics and isotherms. This study investigates phosphate removal from synthetic solution onto calcined marsh clam shells (CMCs) with 5 different particle sizes: 0.075–0.15, 0.15–0.30, 0.30–0.60, 0.60–1.18, and 1.18–2.36 mm. The batch experiment used 2 g of adsorbent and synthetic potassium dihydrogen phosphate (KH2PO4) solution. The adsorbent size of 0.075 to 0.15 mm showed the highest removal (100%) efficiency due to high adsorption rate. The experimental data were further analysed using kinetics and isotherm models; the data fitted well with pseudo-second-order kinetic model (R2 = 0.9986) and Freundlich isotherm model (R2 = 0.8404). The potential of marsh clam shells as an adsorbent for phosphate removal in water is significant for future applications in wastewater treatment technology.

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Section: Adsorption Capacity Q (Mg/g) For Various Particle Sizesmentioning

confidence: 99%

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Noorul Hudai Abdullah,

Muhammad Azreen Mohd Azmi,

Muhammad Afham Mohd Zaidi

et al. 2024

ARFMTS

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“…CWs are widely adopted due to their advantages of exceptional treatment efficiency, high shock load resistance, low investment requirement, and high ecological and landscape value (Figure 6) [105]. Furthermore, researchers have also confirmed via the evaluation of mass balance that the resource recovery efficiency of constructed wetlands is approximately 168-262 mg/m 2 /d [106]. However, the nitrogen removal effect of CW treatment for swine wastewater encounters limitations arising from the lack of carbon sources.…”

Section: Coupling Microbial Fuel Cells Techniquementioning

confidence: 99%

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Meng,

Jin,

Feng

et al. 2023

Separations

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Livestock and poultry farming, as a crucial component of agricultural production, poses a substantial threat to the ecological environment due to the discharge of wastewater. In recent years, researchers have proposed various resource treatment technologies for livestock and poultry breeding wastewater. However, a comprehensive discussion regarding the limitations and avenues for optimizing resource utilization technologies for livestock and poultry farming wastewater treatment is notably absent in existing literature. This paper takes swine wastewater as an illustrative case and undertakes a review of the advantages, disadvantages, and optimization directions of resource treatment technologies, including physical and chemical technology, microbial metabolism, microbial electrochemistry, constructed wetlands, and microalgae-based techniques. Based on mass balance, the recovery rates of various treatment technologies are estimated, and it was found that microbial electrochemistry and constructed wetland techniques may become the mainstream for resource utilization in the future. Furthermore, this paper emphasizes that in addition to resource efficiency, the optimization of resource utilization technologies for swine wastewater should also focus on the following aspects: (1) striking a balance between environmental impact and economic benefits; (2) reducing the cost of resource and energy utilization; and (3) safeguarding environmental and ecological security.

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“…It is commonly known that the photocatalytic process includes three parallel stages running with different speeds [42]: 1-self-decomposition of an organic pollutant under the impact of quanta of photo-stimulating radiation; 2-sorption, photosorption processes on the photocatalyst's and carrier's surfaces; 3-photocatalytic decomposition of an organic pollutant under the impact of hydroxyl and oxygen radicals in the vicinity of the photocatalyst surface, and also decomposition under the exposure to photo-holes on the photocatalyst surface. The calcium carbonate-based materials received from clam shells are good sorbents both of organic molecules [43] and inorganic ions [44,45]. The studies of the sorption activity of the calcium carbonate-based materials in respect to widespread organic pollutants-methylene blue (MB) [46], methyl orange (MO) [47], rhodamine (R6G) [48], and malachite green (MG) [49]-used in simulated experiments are also important at the current stage of the development of the given method of water treatment.…”

Section: Introductionmentioning

confidence: 99%

Study of the Composition and Properties of Bivalve Mollusk Shells as Promising Bio-Indifferent Materials for Photocatalytic Applications (Example of Practical Use)

Zaitsev,

Astapov

2023

Catalysts

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This paper studies the composition and properties of shells of bivalve mollusks (Crenomytilus grayanus, Callista brevisiphonata, and Mizuhopecten yessoensis) from coastal discharges with a view to the possibility of their use in photocatalytic water treatment systems. The clam shells are considered in terms of application in the form of a powder material as a precursor for creating photocatalysts, and also as a carrier of photocatalytic coatings. It was shown that the main phase composing the shell material was calcium carbonate in two crystallographic modifications—calcite and aragonite. The presence of inorganic impurities in all studied clam shells did not exceed one mass percent. The main share was made up of elements included in the composition of calcium carbonate, which confirmed the high bio-indifference of the materials under study. Depending on the physiological and environmental features of the structure of clam shells, different contents of the organic component in their composition were observed. The granulometric characteristics of crushed clam shells (average diameter, specific surface area, and distribution modality) were studied. It was shown that the maximum values of bending strength of 5 MPa and compressive strength of 2 MPa are characterized by Mizuhopecten yessoensis shells with the lowest porosity of 2.91%. The features of sorption and photosorption processes of both whole and crushed shells in relation to four organic dyes at different temperatures and degrees of illumination were studied. Based on crushed shells of Mizuhopecten Yessoensis and titanium dioxide, functional materials (CaxTiyOz) were obtained, and their morphology and photocatalytic properties were studied. An example of the practical use of clam shells as a carrier of a photocatalytic coating is given.

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White hard clam (Meretrix lyrata) shells media to improve phosphorus removal in lab-scale horizontal sub-surface flow constructed wetlands: Performance, removal pathways, and lifespan

Cited by 25 publications

References 34 publications

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Effect of Various Sizes of Calcined Marsh Clam Shell on Phosphate Removal from Aqueous Solution

Resource and Energy Utilization of Swine Wastewater Treatment: Recent Progress and Future Directions

Study of the Composition and Properties of Bivalve Mollusk Shells as Promising Bio-Indifferent Materials for Photocatalytic Applications (Example of Practical Use)

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