Mann’s Cucumeropsis Seed Shell as an Oil Sorbent: Kinetic, Isotherm, and Thermodynamic Studies
Amalachukwu Ifeyinwa Obi,
Vincent Ismael Egbulefu Ajiwe,
Nkiruka Charity Eboagu,
Ifeoma Lilian Ekene-Echerebo,
Chidinma Malinda Muobike
Issue:
Volume 8, Issue 1, March 2023
Pages:
1-8
Received:
3 April 2023
Accepted:
2 May 2023
Published:
18 May 2023
Abstract: Oil spill cleanup using agricultural wastes, which otherwise cause environmental contamination, has gained popularity. In this study, the feasibility of using Mann's cucumeropsis seed shell, a commonly found agricultural waste, as an oil spill mop, was investigated. To identify the surface characteristics of the seed shell, SEM and BET analyses were employed. Batch crude oil sorption tests were performed under various adsorption conditions to determine the effects of initial oil concentration, contact time, adsorption temperature, and adsorbent dosage. Kinetic study of the sorption process involved the pseudo-first order, pseudo-second order, Elovich, and intraparticle diffusion models. Isotherm analysis involved the Langmuir, Temkin, Freundlich, and Dubinin-Radushkevich isotherms. Additionally, the thermodynamic parameters for the sorption process were established. SEM analysis revealed the porous nature of the seed shell's surface. The BET surface area was 313.2 m2/g. The oil sorption process conformed best to the pseudo-first-order kinetics and Langmuir isotherm. The monolayer sorption capacity of the seed shell was 13.072 g/g. The sorption process was exothermic, with some order at the adsorbent–mixture interface. The study's findings demonstrate that Mann's cucumeropsis seed shell is a potent oil sorbent that is safe for the environment and can be enhanced for use in cleaning up oil spills.
Abstract: Oil spill cleanup using agricultural wastes, which otherwise cause environmental contamination, has gained popularity. In this study, the feasibility of using Mann's cucumeropsis seed shell, a commonly found agricultural waste, as an oil spill mop, was investigated. To identify the surface characteristics of the seed shell, SEM and BET analyses wer...
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Review of Inexpensive Adsorbents for Removing Boron from Aqueous Solutions
Nam-Il Kim,
Kyong-Chol Kim
Issue:
Volume 8, Issue 1, March 2023
Pages:
9-21
Received:
7 April 2023
Accepted:
15 May 2023
Published:
29 May 2023
Abstract: Boron is one of the essential elements for plants, animals, and humans, but its excess poses a great risk to life. Therefore, it is necessary to effectively remove boron from various boron-containing aqueous solutions to reduce damage to living things. There have been many studies on the adsorbent for removing boron from the boron-containing aqueous solution, but many of them are expensive or cannot be industrialized or commercialized, so they remain in the laboratory stage. Reducing the cost of adsorbent and realizing commercialization can be said to be the key links to successfully solving the problem of boron removal from an aqueous solution. The purpose of this review is to conduct a comprehensive analysis of inexpensive adsorbents used for boron removal from industrial wastewater and drinking water and to discuss future research directions. This article summarizes the development and utilization of inexpensive adsorbents, including inorganic materials, natural materials, and wastes. The limitations of performance, applicable conditions, sources, et al., of inexpensive adsorbents currently developed and utilized were analyzed, and future research directions were discussed. Most inexpensive adsorbents have a limited range of use, and compared to organic materials, inorganic materials have very low adsorption performance. The development of adsorbents using natural materials or waste is not active. Therefore, further research is needed to improve the performance of inorganic adsorbents, develop environmentally sustainable and efficient adsorbents, and recycle adsorbents.
Abstract: Boron is one of the essential elements for plants, animals, and humans, but its excess poses a great risk to life. Therefore, it is necessary to effectively remove boron from various boron-containing aqueous solutions to reduce damage to living things. There have been many studies on the adsorbent for removing boron from the boron-containing aqueou...
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