Superior adsorption removal of dye and high catalytic activity for transesterification reaction displayed by crystalline CaO nanocubes extracted from mollusc shells

Thakur, Samriti; Singh, Satnam; Pal, Bonamali

doi:10.1016/j.fuproc.2020.106707

Cited by 24 publications

(9 citation statements)

References 27 publications

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“…Calcium oxide is the most widely used catalyst. Therefore, calcined shell powder can be used as a biodiesel catalyst 66‐69 . Bennett et al 70 used calcined scallop shell powder to catalyse the transesterification reaction between heavy oil and ethanol.…”

Section: Chemical Industrymentioning

confidence: 99%

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Review of shell waste reutilization to promote sustainable shellfish aquaculture

Zhan

Wang

2021

Reviews in Aquaculture

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Shellfish aquaculture has developed rapidly, and the annual production of shell waste by‐products exceeds 10 million tons. The reutilization of shell waste is a severe problem in terms of environmental protection and the development of the circular economy. Due to its limited economic value, shell waste has generally been discarded or sent to landfill without any further processing and reutilization, thereby wasting resources and severely degrading the coastal ecosystem. This review summarizes recent research into the reutilization of shell waste, including applications in the fields of agriculture, construction, environmental protection, chemical production, food additives and biomaterials. Problems and strategies related to the reutilization of shell waste are analysed in order to provide technical support for the large‐scale and high value‐added utilization of shell waste.

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Section: Chemical Industrymentioning

confidence: 99%

“…Therefore, calcined shell powder can be used as a biodiesel catalyst. [66][67][68][69] Bennett et al 70 used calcined scallop shell powder to catalyse the transesterification reaction between heavy oil and ethanol. The scallop shells had various microstructures under different calcination temperature conditions.…”

Section: Catalysts and Supportsmentioning

confidence: 99%

Review of shell waste reutilization to promote sustainable shellfish aquaculture

Zhan

Wang

2021

Reviews in Aquaculture

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“…CaO catalyst from waste mollusc shells exhibited better surface structural properties than commercial CaO. FAME yield of 99.5% was obtained for transesterification of cotton seed oil (reaction conditions-methanol: oil molar ratio 12:1, catalyst amount 5%, reaction temperature 65 • C for 4.5 h) [95]. CaO catalyst from waste Mereterix mereterixs shells had 95.0% yield, and and reaction conditions for obtaining maximum conversion were 3 h reaction time, 30:1 of methanol to oil molar ratio, 10.0% catalyst amount and 60 • C reaction temperature [102].…”

Section: Seashell and Eggshell Derived Cao Catalystsmentioning

confidence: 99%

An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective

et al. 2021

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Biodiesel is a clean, renewable, liquid fuel that can be used in existing diesel engines without modification as pure or blend. Transesterification (the primary process for biodiesel generation) via heterogeneous catalysis using low-cost waste feedstocks for catalyst synthesis improves the economics of biodiesel production. Heterogeneous catalysts are preferred for the industrial generation of biodiesel due to their robustness and low costs due to the easy separation and relatively higher reusability. Calcium oxides found in abundance in nature, e.g., in seashells and eggshells, are promising candidates for the synthesis of heterogeneous catalysts. However, process improvements are required to design productive calcium oxide-based catalysts at an industrial scale. The current work presents an overview of the biodiesel production advancements using calcium oxide-based catalysts (e.g., pure, supported, and mixed with metal oxides). The review discusses different factors involved in the synthesis of calcium oxide-based catalysts, and the effect of reaction parameters on the biodiesel yield of calcium oxide-based catalysis are studied. Further, the common reactor designs used for the heterogeneous catalysis using calcium oxide-based catalysts are explained. Moreover, the catalytic activity mechanism, challenges and prospects of the application of calcium oxide-based catalysts in biodiesel generation are discussed. The study of calcium oxide-based catalyst should continue to be evaluated for the potential of their application in the commercial sector as they remain the pivotal goal of these studies.

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“…As an adsorbent, it has advantage,s such as large surface area, low cost, safe for humans, fast kinetics, and effective for removing heavy metal ions from water. In addition, it has been used to adsorb dyes from the textile, pharmaceutical, and agricultural waste industries, as well as to absorb the CO 2 gas [Thakur et al, 2021;Granados-Pichardo et al, 2020]. The combination of adsorption using CaO and electrochemical methods effectively increased pH and reduced heavy metal ions, such as Fe, Mn, Co, Ni Cu, and Zn from AMD [Orescanin and Kollar, 2012].…”

Section: Introductionmentioning

confidence: 99%

“…Naturally, CaO is obtained from several materials containing CaCO 3, such as eggshells [Kasirajan et al, 2022], mollusk shells [Thakur et al, 2021], and limestone [Sisca et al, 2021]. Green mussel is one of the shellfish consumed by Indonesians.…”

Section: Introductionmentioning

confidence: 99%

Modification of Calcium Oxide from Green Mussel Shell with Iron Oxide as a Potential Adsorbent for the Removal of Iron and Manganese Ions from Acid Mine Drainage

Purwaningrum¹,

Hasanudin²,

Rachmat³

et al. 2022

J. Ecol. Eng.

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Acid mine drainage (AMD) has the characteristics of high heavy metal ion content and low pH. This study aimed to synthesize the CaO/Fe 3 O 4 composite for the adsorption of iron and manganese ions from acid mine drainage. CaO was synthesized from the shells of green mussels (Perna viridis). The CaO/Fe 3 O 4 composites were characterized using XRD, BET surface area, SEM-EDS, and VSM. The functional groups of the composite before and after adsorption were analyzed using FTIR. The adsorption of Fe(II), Fe(III), and Mn(II) ions was carried out with the batch method to determine the effect of pH, contact time, and initial concentration of metal ions. The CaO/Fe 3 O 4 composite has magnetic properties, as indicated by the saturation magnetization value of 65.49 emu/g. The Langmuir and Freundlich isotherm models were used to describe the adsorption isotherm of the composite for Fe(II), Fe(III), and Mn(II) ions. Investigations were also conducted on adsorption kinetics, including pseudo-first-order and pseudo-second-order, as well as adsorption thermodynamics comprising free energy, enthalpy, and entropy. Pseudofirst-order and Langmuir isotherms are suitable to describe the adsorption of Fe(II), Fe(III), and Mn(II) ions with adsorption capacities of Fe(III) > Fe(II) > Mn(II). Moreover, the adsorption of all ions using the composite occurred spontaneously. The removal effectiveness for Fe and Mn ions from AMD using CaO/Fe 3 O 4 composite, reached 90.41 and 97.59%, respectively, in volume 100 mL AMD, composite mass 0.4 g, and a contact time of 60 minutes.

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Superior adsorption removal of dye and high catalytic activity for transesterification reaction displayed by crystalline CaO nanocubes extracted from mollusc shells

Cited by 24 publications

References 27 publications

Review of shell waste reutilization to promote sustainable shellfish aquaculture

Review of shell waste reutilization to promote sustainable shellfish aquaculture

An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective

Modification of Calcium Oxide from Green Mussel Shell with Iron Oxide as a Potential Adsorbent for the Removal of Iron and Manganese Ions from Acid Mine Drainage

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