Recycling of eggshell waste into low-cost adsorbent for Ni removal from wastewater

Angelis, Gabriele De; Medeghini, Laura; Conte, Aida Maria; Mignardi, Silvano

doi:10.1016/j.jclepro.2017.07.085

Cited by 148 publications

(84 citation statements)

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“…The produced WP-HAP particles were comprehensively characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDS), and Brunauer, Emmett, and Teller (BET) methods. Moreover, the ion-exchange of the produced WP-HAP powder with Ni 2+ (that is commonly used in refining, steel, welding, and electroplating industries and is one of the most harmful toxic metal to human beings even in small quantities that can cause lung fibrosis, kidney disease, and allergic dermatitis (15,27)) was confirmed by an adsorption experiment. This approach is particularly suitable for calcium-rich non-structural C&D wastes that are difficult to recycle as new construction and building materials due to their inferior mechanical properties.…”

Section: Introductionmentioning

confidence: 89%

“…A maximum of 10 heavy metal units can be strongly stabilized by one HAP unit. The adsorption capability of HAP on a variety of toxic metal ions has been successfully confirmed, such as Co 2+ , Cu 2+ , Cd 2+ , Zn 2+ , Ni 2+ , and Pb 2+ (15,16,20,21). Thus, HAP is regarded as an excellent adsorption and stabilization material for radioactive waste and harmful metals (12,22).…”

Section: Introductionmentioning

confidence: 90%

“…HAP belongs to the apatite family and commonly exists in natural bones and teeth (11)(12)(13)(14). It has salient features in terms of high stability, good biocompatibility, high bioactivity, and high sorption capacity (12,(15)(16)(17). Particularly, HAP possesses the salient capacity of adsorbing heavy metal ions through a so-called ion-exchange process (18,19).…”

Section: Introductionmentioning

confidence: 99%

“…In the past thirty years, there has been a great interest worldwide in the synthetic methods of HAP powders. As summarized by Fihri (12) those methods are classified into four categories: dry methods (23), wet methods (13,15), microwave-assisted methods (24,25) and miscellaneous methods. Among them, the wet methods, including double decomposition or coprecipitation, emulsion, hydrolysis method, sol-gel method, and hydrothermal approach, are widely adopted since the procedures for these methods are simple and allow perfect control on the structure, texture, and morphology of HAP powders (12).…”

Section: Introductionmentioning

confidence: 99%

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Preliminary study on the upcycle of non-structural construction and demolition waste for waste cleaning

Chen

Wang

et al. 2020

Mater. construcc.

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This study proposes a method to convert non-structural calcium-rich construction and demolition waste fines into adsorbents of heavy metal ions by mixing waste fines with diammonium hydrogen phosphate solution to produce hydroxyapatite, which has high surface areas and excellent ion-exchange capacity with heavy metal ions. As a result, environmental polluting waste is converted into environmentally cleaning material. Waste putty powders was chosen as the representative waste to investigate the detailed formation process of hydroxyapatite and the key reaction parameters of the reaction. Results showed that hydroxyapatite can be produced on waste putty particles. Higher ageing temperatures or longer ageing duration are beneficial to the yield and crystallinity of the produced hydroxyapatite. Adsorption testing confirmed that Ni 2+ can replace Ca 2+ in the hydroxyapatite lattice, leading to the formation of a new crystal, arupite (Ni 3 (PO 4 ) 2 •8H 2 O), and contributing to a modest adsorption capacity for Ni 2+ (15 mg/g) for the hydroxyapatite-containing waste putty. Citation/Citar como: Chen, P.; Chen, X.; Wang, Y.; Wang, P. (2020) Preliminary Study on the Upcycle of Non-structural Construction and Demolition Waste for Waste Cleaning. Mater. Construcc. 70 [338], e220 https://doi.org/10.3989/ mc.2020.13819 RESUMEN:Estudio preliminar sobre el empleo de residuos de construcción y demolición no estructurales para la eliminación de residuos. Este estudio propone un método para convertir residuos de construcción y demolición no estructurales, ricos en calcio y pulverulentos, en adsorbentes de iones de metales pesados mezclándolos con una solución de hidrógenofosfato de diamonio para generar hidroxiapatita, la cual presenta una elevada área superficial y una excelente capacidad de intercambio iónico de iones de metales pesados. De este modo, un residuo contaminante se convierte en un material que limpia el medio ambiente. Se seleccionó residuo en forma de masilla en polvo como residuo representativo para investigar en detalle los procesos de formación de hidroxiapatita y los parámetros clave implicados en la reacción. Los resultados mostraron que la hidroxiapatita se puede producir en las partículas de los residuos empleados. La producción y la cristalinidad de la hidroxiapatita se ve favorecida por temperaturas de envejecimiento elevadas y prolongadas. Los ensayos de adsorción confirmaron que el Ni 2+ puede sustituir al Ca 2+ en la estructura de la hidroxiapatita, formándose un nuevo mineral, arupita (Ni 3 (PO 4 ) 2 •8H 2 O), y contribuyendo a una adsorción modesta de Ni 2+ (15 mg/g) por parte de la masilla de residuos con hidroxiapatita.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preliminary study on the upcycle of non-structural construction and demolition waste for waste cleaning

Chen

Wang

et al. 2020

Mater. construcc.

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“…Atıksulardan adsorpsiyon ile ağır metal iyonlarının giderimi üzerime birçok adsorban malzeme kullanılmaktadır. Bunlar arasında doum tohumu kaplanmış aktif karbon [19,20], bitki kabuk atığı [4], sığırkuyruğu bitkisi [21], kitosan boncuğu [22], kaplanmış montmorillonit [23], modifiye aktif karbon [24], çay fabrikası atığı [25], hindistan cevizi işleme endüstrilerindeki atık malzeme [26], modifiye hidrokarbon [27], zeytinyağı katı atığı [28], çekirdek kabuğu [29], pirina [30] ve yumurta kabuğu atıkları [31] gibi daha bir çok adsorban sayılabilmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Fiziksel ve kimyasal olarak modifiye edilmiş proses atığının sentetik atıksudan ağır metal gideriminde başarısının araştırılması

Öden

2019

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Highlights:Graphical/Tabular Abstract Removal of Ni(II) ions by using modified process waste in adsorption system, Isoterm equilibrium models and reaction kinetics of adsorption, Dosage, contact time, pH and mixing speed optimization This study investigated removal efficiency of nickel in adsorption system by using the process waste obtained from the exit point of ore processing, modified with ultrasound and acid in laboratory. The experimental study was conducted in an intermittent process by taking into account the criteria of different adsorbent dosages, pH , contact times and mixing speeds. The experimental schema is shown in figure A. Figure A. Laboratory scale model working process diagramPurpose: The aim of this study is to investigate the importance, success and adsorption performance of an economical treatment process by using the modified process waste (MPA) output waste (with sound and acid) by synthetic wastewater containing Ni (II) ions. Theory and Methods: Etibor Colemanite and Ulexite Production Plant (Eti Mine Works GeneralDirectorate Bigadiç Boron Works Directorate), which is the material used in the absorption duty of heavy metal removal, was obtained from the area of the land in the field as a result of enrichment. All the chemicals used were studied by taking into consideration the standard methods and methods. All solutions and nickel stock solution were prepared and used with distilled water. Ni(NO3)2.6H2O dissolved stock solution was prepared in 1000 mL deionized water and all experiments were carried out under the same conditions. The volume of synthetic wastewater solution was determined as 100 mL during the determination of different dosage and optimization criteria. The purpose of the modification process was to improve the active surface ratio of process waste which is successful in removing different pollutants and to modify the active surface of HCl acid and ultrasound to prevent the soluble substances which are likely to give color to the water.Results: Chemical properties and SEM images pertaining to modified process waste (MPA) were specified. In nickel removal, it was observed that the obtained results were found more concordant with Langmuir Isotherm models as evidenced by correlation coefficients. Kinetics data were obtained from treatment results, and qmax value obtained for MPA was found as 25.77 mg/g. Conclusion:In the light of the data obtained from this study, it is thought that the modified adsorbent can be used to remove heavy metals from aqueous solutions. It should be kept in mind that raw wastewater tests should be carried out in order to be used in heavy metal removal from wastewaters.This study investigated removal efficiency of nickel in adsorption system by using the process waste obtained from the exit point of ore processing, modified with ultrasound and acid in laboratory. The experimental study was conducted in an intermittent process by taking into account the criteria of different adsorbent dosages (0,1-5 g/100 mL), pH (2-10), contact times (0-150 minutes) a...

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Materials from Eggshells and Animal Bones and Their Catalytic Applications

Hart¹,

Aliu²

2022

Design and Applications of Hydroxyapatite‐Based Catalysts

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Recycling of eggshell waste into low-cost adsorbent for Ni removal from wastewater

Cited by 148 publications

References 50 publications

Preliminary study on the upcycle of non-structural construction and demolition waste for waste cleaning

Preliminary study on the upcycle of non-structural construction and demolition waste for waste cleaning

Fiziksel ve kimyasal olarak modifiye edilmiş proses atığının sentetik atıksudan ağır metal gideriminde başarısının araştırılması

Materials from Eggshells and Animal Bones and Their Catalytic Applications

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