Preparation, characterization, and application of macroporous activated carbon (MAC) suitable for the BAC water treatment process

Dong, Lihua; Liu, Wenjun; Yu, Yi; Hou, Li’an; Gu, Ping; Chen, Guanyi

doi:10.1016/j.scitotenv.2018.07.280

Cited by 31 publications

(9 citation statements)

References 51 publications

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“…Activated carbon (AC) is also known as activated charcoal, and this of type carbon material is formed under some treatment protocols resulting in micro/nanopores and having the large surface area of more than 3000 m 2 [159]. The AC is produced on a large scale from coal, wood, and agricultural wastes [160]. In addition to its porous nature (as shown in Fig.…”

Section: Classification Of Carbon Nanomaterials Based On Their Dimensmentioning

confidence: 99%

“…6), AC also has a high mechanical strength which enables its applications in catalyst support, capacitors, electrodes, and gas storage and most importantly used as the adsorbent for removal of metal ions, organic wastes, and gases from water [160–162]. The high mechanical strength of activated carbon enables its periodic cleaning, regeneration, and reutilization [160]. Abeer et al reported the preparation of AC from apricot stone and its application in removal of Zn + 2 and Al + 3 ions with removal efficiency of 92% [163].…”

Section: Classification Of Carbon Nanomaterials Based On Their Dimensmentioning

confidence: 99%

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Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

2019

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Nanotechnology is an advanced field of science having the ability to solve the variety of environmental challenges by controlling the size and shape of the materials at a nanoscale. Carbon nanomaterials are unique because of their nontoxic nature, high surface area, easier biodegradation, and particularly useful environmental remediation. Heavy metal contamination in water is a major problem and poses a great risk to human health. Carbon nanomaterials are getting more and more attention due to their superior physicochemical properties that can be exploited for advanced treatment of heavy metal-contaminated water. Carbon nanomaterials namely carbon nanotubes, fullerenes, graphene, graphene oxide, and activated carbon have great potential for removal of heavy metals from water because of their large surface area, nanoscale size, and availability of different functionalities and they are easier to be chemically modified and recycled. In this article, we have reviewed the recent advancements in the applications of these carbon nanomaterials in the treatment of heavy metal-contaminated water and have also highlighted their application in environmental remediation. Toxicological aspects of carbon-based nanomaterials have also been discussed.

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Section: Classification Of Carbon Nanomaterials Based On Their Dimensmentioning

confidence: 99%

Section: Classification Of Carbon Nanomaterials Based On Their Dimensmentioning

confidence: 99%

Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

2019

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“…It is produced with characteristic micro/nanopores and large surface area (> 3000 m 2 ) using various types of biomass such as rice husk, palm and coconut shells, tobacco stem, wood saw dust, pear seed cake, olive stones, bamboo etc. [132,133] as well as from sewage sludge of civil municipalities after following some protocols [134].…”

Section: Activated Carbon and Nanoporous Carbon 231 Activated Carbonmentioning

confidence: 99%

“…The adsorption capacity (%) of AC generally depends on contact time, pH, and temperature like other adsorbents. Its high mechanical strength makes it well-suited for periodic cleaning, regeneration, and reuse applications [133].…”

Section: Activated Carbon and Nanoporous Carbon 231 Activated Carbonmentioning

confidence: 99%

Carbon Nanomaterials for Wastewater Treatment

et al. 2021

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The research progress made in recent years in removal of organic-inorganic pollutants from wastewater using various types of carbon materials as adsorbents such as carbon nanotubes, carbon nanofibers, graphenes, graphitic carbon nitride, fullerene, activated carbon spheres, and carbon quantum dots is reviewed. These carbon nanomaterials with hierarchical structures are efficient and economical adsorbents. The techniques of metal impregnation and doping help to control the porosity and surface area of nanomaterials. Electrostatic forces, p-p and p-e interactions, van der Waals weak forces, and oxygen-containing groups are considered responsible for the removal of pollutants from wastewater. The carbon nanomaterial-based photocatalysts are applied successfully in decomposition of persistent dyes under visible light. Fe 3 O 4 magnetic material is employed as recyclable adsorbent after treatment of wastewater. Freundlich and Langmuir models are found more suitable to calculate the adsorption efficiency and adsorption kinetics of pollutants. Criteria and properties of carbon nanomaterials are discussed that might play a significant role in remediation of wastewater.

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“…Media that have high hydrophobicity and contain some reactive groups such as hydroxyl groups normally provide high absorptivity for microbial attachment (Cohen et al, 2001). GAC that contains the micron-level micropores has been proven to not only possess higher adsorption capacity but also provide space for microbes to access and form biofilms, leading to more DOC removal and biological activity even at low temperatures (Dong, Liub, et al, 2019). Using GAC provides the formation of biofilms with denser biomass than sand or anthracites due to more porosity, surface area, roughness, and charge (Basu et al, 2016).…”

Section: Biofilm Formation and Treatment Mechanismsmentioning

confidence: 99%

Biofiltration for treatment of recent emerging contaminants in water: Current and future perspectives

Thuptimdang

Siripattanakul‐Ratpukdi

Ratpukdi

et al. 2020

Water Environment Research

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This review article discusses the current state of knowledge on water treatment and reuse by biofiltration systems focusing on biologically enhanced activated carbon (BAC) process. First, the applications of BAC in water treatment systems are overviewed, and then, the mechanisms for both biofilm formation and contaminant treatment are discussed along with the operational parameters influencing the performance of BAC process. Since contaminant removal by BAC is governed by adsorption and biodegradation, both processes are reviewed in relation to the treatment mechanisms. Information on removal of recent emerging contaminants including nitrogenous and unregulated disinfection by-products (DBPs) and their precursors, poly-and perfluorofluoroalkyl substances, nanoparticles, and plasticizers and microplastics by BAC is given along with suggestions for treatment improvements and future research. The uniqueness of this review includes insights on relevant biofilm aspects and the coverage on the abilities of BAC for treatment of recent and less common emerging contaminants especially unregulated DBPs and their precursors, nanoparticles, and plasticizers and microplastics. For future BAC studies, recommendations are proposed on exploring the biofilm development on media and recent emerging contaminants as co-contaminants, as well as developing novel supporting materials such as biochar. © 2020 Water Environment Federation • Practitioner points• The amount and the physiology and physical structure of biofilm affect the treatment efficiency of biological activated carbon. • Biological activated carbon is capable of removing a majority of nitrogenous and unregulated disinfection by-products. • Whether and how biological activated carbon is impacted by and/or can remove nanoparticles, and plasticizers and microplastics remain largely unknown. • Future work on biological activated carbon should focus on biofilm evolution and control, and novel support materials.

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Preparation, characterization, and application of macroporous activated carbon (MAC) suitable for the BAC water treatment process

Cited by 31 publications

References 51 publications

Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

Carbon Nanomaterials for Wastewater Treatment

Biofiltration for treatment of recent emerging contaminants in water: Current and future perspectives

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