Preparation of Activated Carbon from Cashew Nut Shells for Water Purification

Guillaume, Kouassi Brou; Серпокрылов, Николай Сергеевич; Smolyanichenko, Alla S.; Чеблакова, Е. Г.; Горина, В. А.

doi:10.3103/s1067821220010058

Cited by 12 publications

(3 citation statements)

References 9 publications

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“…It is cost-effective, regenerable, and effective at low pollutant concentrations in both liquid and gas phases (Geczo et al 2021;Hoc Thang et al 2021;Smith et al 2021;Kalaba et al 2022). Activated carbon efficiently removes various contaminants from water, including taste, odor, color, organic pollutants, and some heavy metals (Kouassi Brou et al 2020). However, the cost of raw materials and energy consumption during processing are potential drawbacks (Hoc Thang et al 2021;Nuithitikul et al 2020).…”

Section: Cashew Nutshells Derived Activated Carbonmentioning

confidence: 99%

Exploring the potential of cashew nutshells: A critical review of alternative applications

Cruz,

Maranon,

Hernandez

et al. 2024

BioRes

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The production of cashew nuts has been increasing globally, leading to a greater volume of waste materials that require proper management. Nevertheless, cashew nutshells (CNS), currently considered waste by most processors, offer a noteworthy opportunity for alternative applications owing to their distinct physical, chemical, and thermal properties. This article reviews alternative applications for CNS that can leverage these properties, while evaluating research gaps. The potential uses are classified into three categories: material development, energy production, and substance absorption. In the materials segment, various examples are discussed where CNS serves as raw material to synthesize biopolymers, cementitious materials, and a broad range of composites. The energy production section discusses various processes that utilize CNS, including pyrolysis, gasification, and briquette production. The absorption section presents CNS and activated carbon derived from CNS as effective absorbents for liquid-phase and gas-phase applications. While this review highlights numerous research-level possibilities for CNS utilization, only a few of these options have been implemented within the industry. Consequently, further research is essential, particularly in CNS characterization, economic and environmental assessment, and real-life implementation, to broaden and enhance the integration of this biomass into applications that can contribute to the value of both its production and processing chain.

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Section: Cashew Nutshells Derived Activated Carbonmentioning

confidence: 99%

Exploring the potential of cashew nutshells: A critical review of alternative applications

Cruz,

Maranon,

Hernandez

et al. 2024

BioRes

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“…Relatively high pyrolysis temperatures typically produce biochars that efficiently sorb organic contaminants by increasing surface area, microporosity, and hydrophobicity, while low temperature biochar is more suitable for removing inorganic/polar organic contaminants via oxygenated functional groups, electrostatic attraction, and sedimentation [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Physical and Chemical Properties of Silver-Containing Nanosorbent Obtained from Rice Straw Biochar

Smolyanichenko

2023

Agriculture

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Improving the quality of natural water purification is one of the priority areas in the research conducted by scientific communities in the field of ecology. At the same time, the task is to achieve the optimal efficiency of the technological process at a low cost. The solution, in this case, is the use of materials necessary for cleaning, in particular, sorbents from natural raw materials, including agricultural waste. At present, a sufficient number of research results have been published confirming the effectiveness of the sorbent from biochar from various types of agricultural waste, as well as from rice straw biochar (RSB). This article proposes an innovative method for modifying biochar from rice straw, which allows the use of the material as a sorbent with a disinfecting effect. The method consists of processing biochar in a process activation plant (PAP) using a solution of silver nitrate, which is released in the form of a carbon nanomaterial with attached metallic silver ions on the surface of biochar particles. The biochar impregnated with a solution of silver nitrate was contacted with ferromagnetic particles under electromagnetic influence, followed by thermal treatment of the sample. The resulting silver-containing sorbent was subjected to a physicochemical analysis of its properties; photographs of electron microscopy were also obtained, and a bacteriological analysis of the effectiveness of the sorbent on natural water was carried out. The analysis was carried out on three indicators—total microbial count (TMC), total number of coliform bacteria (TCB), and thermotolerant coliform bacteria (TCB). According to the research results, the sorbent showed its disinfecting properties and confirmed its high efficiency (90.48–100%).

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“…The increasing popularity of these materials is also due to their chemical inertness, environmentally benign nature, thermal stability, low cost as compared to other commercial polymeric agents, and their easy availability. For example, activated carbon is a very good adsorbent used for pollutant removal and can be obtained easily from waste material, such as the pyrolysis of any kind of nut shells [98]. Another significant feature of carbon is that it can be doped easily with a variety of metal oxide nanoparticles and therefore, is regarded as a promising material in photodegradation of organic pollutants [99].…”

Section: Advantageous Features and Different Rolesmentioning

confidence: 99%

Synthesis, characterization and photocatalytic activity of BiOX (X = Cl, I, Br) and their composites with carbon nanotubes (CNT)

Sharma

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Preparation of Activated Carbon from Cashew Nut Shells for Water Purification

Cited by 12 publications

References 9 publications

Exploring the potential of cashew nutshells: A critical review of alternative applications

Exploring the potential of cashew nutshells: A critical review of alternative applications

Physical and Chemical Properties of Silver-Containing Nanosorbent Obtained from Rice Straw Biochar

Synthesis, characterization and photocatalytic activity of BiOX (X = Cl, I, Br) and their composites with carbon nanotubes (CNT)

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