The emergence of multifunctional adsorbents and their role in environmental remediation

Chua, Siew Fen; Nouri, Alireza; Ang, Wei Lun; Mahmoudi, Ebrahim; Mohammad, Abdul Wahab; Benamor, Abdelbaki; Ba‐Abbad, Muneer M.

doi:10.1016/j.jece.2020.104793

Cited by 44 publications

(15 citation statements)

References 163 publications

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“…The adsorbents can be generally categorized into two main classes, organic and inorganic, where the classification refers to the base material used for the fabrication of adsorbents. Figure 7 illustrates the categorization of adsorbents, and Table 9 lists several commonly used or studied examples for each categorization [34,50]. Table 9.…”

Section: Removal Of Heavy Metals By Various Adsorbentsmentioning

confidence: 99%

“…Adopted from reference [34] (copyright reserved Elsevier, 2018). Adopted from reference [50] (copyright reserved Elsevier, 2021).…”

Section: Removal Of Heavy Metals By Various Adsorbentsmentioning

confidence: 99%

“…This is due to their appealing characteristics such as physical and chemical stability and rigidity, along with the heat and environmental resistance. Furthermore, due to their flexibility in synthesis and functionalization, polymeric adsorbents have a high adsorption capacity for eliminating a wide range of contaminants with varying properties, especially heavy metals [50]. Incorporating two distinct polymers or permanently scattering inorganic nanoparticles within polymer supports has resulted in polymer-polymer hybrids and polymer-inorganic hybrids.…”

Section: Polymeric Adsorbentmentioning

confidence: 99%

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Heavy Metals Removal from Water by Efficient Adsorbents

Zaimee

Sarjadi

Rahman

2021

Water

102

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Natural occurrence and anthropogenic practices contribute to the release of pollutants, specifically heavy metals, in water over the years. Therefore, this leads to a demand of proper water treatment to minimize the harmful effects of the toxic heavy metals in water, so that a supply of clean water can be distributed into the environment or household. This review highlights several water treatment methods that can be used in removing heavy metal from water. Among various treatment methods, the adsorption process is considered as one of the highly effective treatments of heavy metals and the functionalization of adsorbents can fully enhance the adsorption process. Therefore, four classes of adsorbent sources are highlighted: polymeric, natural mineral, industrial by-product, and carbon nanomaterial adsorbent. The major purpose of this review is to gather up-to-date information on research and development on various adsorbents in the treatment of heavy metal from water by emphasizing the adsorption capability, effect of pH, isotherm and kinetic model, removal efficiency and the contact of time of every adsorbent.

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Section: Removal Of Heavy Metals By Various Adsorbentsmentioning

confidence: 99%

“…Adopted from reference [34] (copyright reserved Elsevier, 2018). Adopted from reference [50] (copyright reserved Elsevier, 2021).…”

Section: Removal Of Heavy Metals By Various Adsorbentsmentioning

confidence: 99%

Section: Polymeric Adsorbentmentioning

confidence: 99%

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Heavy Metals Removal from Water by Efficient Adsorbents

Zaimee

Sarjadi

Rahman

2021

Water

102

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“…Overall, numerous types of materials have been applied as adsorbent for many applications such as water treatment, catalysis, desiccants, indicators etc. There are a lot of adsorbent for the removal of contami-nants or pollutants but some of the commonly used adsorbents are activated carbon [48], cellulose [49], natural minerals [50], silica [51,52], biopolymers [53] and nanomaterials [54].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Removal from Electroplating Wastewater by Waste Fiber-Based Poly(amidoxime) Ligand

Rahman

Zhi

Sarjadi

et al. 2021

Water

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An efficient and economical treatment technology for heavy metal removal from the electroplating wastewaters is needed for the water purification. Therefore, pure cellulosic materials were derived from two waste fiber (pandanus fruit and durian rind) and conversion of the cellulose into the poly(acrylonitrile)-grafted material was accomplished by free radical grafting system. Thereafter, poly(amidoxime) ligand was produced from the grafted materials. Sorption capacity (qe) of several toxic metals ions was found to be high, e.g., copper capacity (qe) was 298.4 mg g−1 at pH 6. In fact, other metal ions, such as cobalt chromium and nickel also demonstrated significant sorption capacity at pH 6. Sorption mechanism played acceptable meet with pseudo second-order rate of kinetic pattern due to the satisfactory correlation with the experimental sorption values. A significant correlation coefficient (R2 > 0.99) with Langmuir model isotherm showed the single or monolayer sorption occurred on the surfaces. The reusability study showed that the polymer ligand can be useful up to six cycles with minimum loss (7%) of efficiency and can be used in the extraction of toxic metal ions present in the wastewaters. Therefore, two types of electroplating wastewater were used in this study, one containing high concentration of copper (23 ppm) and iron (32 ppm) with trace level of others heavy metals (IWS 1) and another containing high concentration of copper (85.7 ppm) only with trace level of others heavy metals (IWS 2). This polymeric ligand showed acceptable removal magnitude, up to 98% of toxic metal ions can be removed from electroplating wastewater.

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“…Among various approaches, adsorption is considered one of the best ways to remove dyes due to its simple operation, minimum energy requirements and low cost. [1] But an ideal adsorbent used for removal of pollutants should be of excellent adsorption ability, simple operability, easy formability, high stability, non-toxicity, raw material sufficiency, low energy consumption and low cost et al Now, turning industrial and agro-forestry residues into functional adsorbents for removal of dyes is gaining worldwide attention due to its advantage natures of raw material sufficiency, low cost and unique chemical structure. Meanwhile, exploiting industrial and agroforestry residues to use as adsorbents not only ease the disposal pressure of residues but also treat waste by waste, further reducing costs of waste and wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Quaternary Ammonium Functionalized Lignosulfonate for Simultaneous Adsorption of Anionic/Cationic Dyes and Desinfection

et al. 2021

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Although various adsorbents have been developed for sewage treatment, only a few adsorbents can simultaneously adsorb anions/cations and disinfect. In this work, a quaternary lignosulfonate (Q-LSP) was prepared, which can not only simultaneously adsorb anion and cation pollution, but also disinfect. FT-IR, XPS were employed to confirm successful preparation of Q-LSP. The Q-LSP adsorbs cationic dye methylene blue (MB) and anionic dye Congo red (CR) favorably, and the maximum q e of Q-LSP to MB and CR are 153 and 324 mg/g respectively according to Langmuir isotherm model. The Langmuir isotherm and pseudo-second-order kinetic models are more suitable to describe the adsorption process of MB and CR on Q-LSP. In binary system containing MB and CR, Q-LSP can simultaneously adsorb MB and CR, with MB adsorbed preferentially. The Q-LSP loaded MB or CR is easily regenerated, and the adsorption properties of regenerated Q-LSP only decreases by 9.2 % to CR and 9.6 % to MB respectively after 4 desorption-resorption cycles. Moreover, the Q-LSP can disinfect by leaking endogenous chemicals. Therefore, the Q-LSP can be used as a new adsorbent possessing performance of simultaneously adsorbing anionic/cationic pollutants and bactericidal activities.

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The emergence of multifunctional adsorbents and their role in environmental remediation

Cited by 44 publications

References 163 publications

Heavy Metals Removal from Water by Efficient Adsorbents

Heavy Metals Removal from Water by Efficient Adsorbents

Heavy Metals Removal from Electroplating Wastewater by Waste Fiber-Based Poly(amidoxime) Ligand

Quaternary Ammonium Functionalized Lignosulfonate for Simultaneous Adsorption of Anionic/Cationic Dyes and Desinfection

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