Remediation of heavy metal polluted waters using activated carbon from lignocellulosic biomass: An update of recent trends

Hoang, Anh Tuan; Kumar, Sunil; Lichtfouse, Éric; Cheng, Chin Kui; Varma, Rajender S.; Senthilkumar, N.; Nguyen, Phuoc Quy Phong; Nguyen, Xuan Phuong

doi:10.1016/j.chemosphere.2022.134825

Cited by 91 publications

(14 citation statements)

References 290 publications

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“…The most widely used adsorbent for water purification applications is activated carbon because of its high surface area, availability, and porous nature. − But, it has several disadvantages such as a lack of selectivity and difficulty in regeneration. Next, carbon nanotubes (CNTs) have acquired a lot of attention as adsorbents because of their unique structures, such as their hollow core, high porosity, large specific surface area, and extremely fast water transport.…”

Section: Adsorption Processmentioning

confidence: 99%

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Goyal

Amar

Gulati

et al. 2023

ACS Appl. Nano Mater.

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Over the past few decades, the disposal of various industrial pollutants such as organic dyes, heavy metal ions, pesticides, and phenolic compounds has led to the deterioration of the quality of freshwater; even with the 70% water coverage over the earth, there is meager access to freshwater sources. Against the drawbacks of conventional water purification methods such as sludge production and generation of toxic byproducts, the adsorption process is regarded as an efficient and economical strategy for the treatment of wastewater. Among various available adsorbents, cyclodextrin-based nanosponges have evolved as prominent adsorbents for treating wastewater and are considered a cost-effective option with minimal energy and time requirements. Owing to their porous nature, cone-like structure, cross-linked three-dimensional network, and special architecture of the hydrophilic and hydrophobic moieties wherein the hydrophobic core can form inclusion complexes with pollutants via host−guest interactions while hydrophilic edges interact with pollutants through hydrogen-bonding and electrostatic interactions, they are effective adsorbents for the removal of a variety of pollutants such as heavy metals, organic dyes, phenols, and pesticides. Additionally, the number of active sites in these nanosponges could be enhanced by hybridizing with other adsorbents or by functionalization with magnetic nanoparticles. This review deliberates various water purification methods and underlines the limitations of using other conventional methods over adsorption. The strategies to synthesize β-cyclodextrin-based nanosponges deploying various cross-linkers and their further modifications have been discussed in detail. Finally, the application of these nanosponges for the effective removal of assorted pollutants from wastewater highlighting the adsorption mechanism in certain cases is cogitated.

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Section: Adsorption Processmentioning

confidence: 99%

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Goyal

Amar

Gulati

et al. 2023

ACS Appl. Nano Mater.

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“…specific surface area and maximum NH 4 + -N adsorption at the liquid stage increased CH 4 generation by 35 %. Also, biochar demonstrated an exceptional capability of adsorbing toxicants such as nonylphenols, phenols and heavy metals (Kumar et al, 2022;Ambaye et al, 2021). According to Wang et al (2020a), adding 15 g/L biochar to an AD system containing phenol shortened the methanogenic lag time (from 15 d to 1.1-3.2 d), allowing the maximum rate of methane generation to increase by 1.6-2.5 times.…”

Section: As Absorbentmentioning

confidence: 99%

“…Burning a large quantity of crop residue has detrimental effects on humans, notably on young children and pregnant women who are susceptible to cardiovascular and respiratory diseases (Pawar and Panwar, 2020). Therefore, turning leftover crop residues into biochar and other carbon materials is a potential method to reduce CO 2 emissions released into the environment while simultaneously enhancing other advantages (Yetri et al, 2020;Kumar et al, 2022). Indeed, biochar is a cost-effective product, so it could be employed as an additive to improve the AD system's performance as mentioned above.…”

Section: Introductionmentioning

confidence: 99%

Production of biochar from crop residues and its application for anaerobic digestion

Hoang

Goldfarb

Foley

et al. 2022

Bioresource Technology

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“…These carbonaceous materials are widely used in different applications such as food purification, metal recovery, drinking water treatment, contaminant removal, and energy storage. 31,32 Therefore, these agro-industrial residues are interesting candidates as raw materials to produce ACs as an alternative to reduce their environmental impact and the implementation of the circular economy since they constitute an inexpensive and readily available resource.…”

Section: Introductionmentioning

confidence: 99%

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

Ramos,

Mamaní,

Erans

et al. 2024

Energy Fuels

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This work studied the synthesis of activated carbons (ACs) from olive tree pruning waste since the recovery of this abundant residue for producing AC is a sustainable and environmentally friendly alternative. The physical and KOHchemical activation processes were compared and analyzed to obtain an appropriate carbon for the adsorption of CO 2 . Highly microporous carbons were obtained after KOH chemical activation that exhibit high surface area (3526 m 2 g −1 ), micropore volume (1.20 cm 3 g −1 ), and total volume (1.79 cm 3 g −1 ). The equilibrium and kinetic behavior of carbons for CO 2 adsorption were studied using Langmuir, Freundlich, and Temkin models for the isotherms and pseudo-first-order and pseudo-second-order models for the kinetics. The chemically activated carbon was found to be the most appropriate for the capture of CO 2 at low and high CO 2 pressures, showing an adsorption capacity of 5.1 mmol g −1 at 0 °C and 1 bar. The estimated isosteric heat indicates that the CO 2 adsorption process was feasible and confirms the pure physical adsorption of CO 2 . The chemically activated carbon allowed ten reuse cycles, maintaining the capture capacity. These results confirm that ACs from olive tree pruning residue have suitable capacity and stability for application as CO 2 adsorbents.

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Remediation of heavy metal polluted waters using activated carbon from lignocellulosic biomass: An update of recent trends

Cited by 91 publications

References 290 publications

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Production of biochar from crop residues and its application for anaerobic digestion

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

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Remediation of heavy metal polluted waters using activated carbon from lignocellulosic biomass: An update of recent trends

Cited by 91 publications

References 290 publications

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Production of biochar from crop residues and its application for anaerobic digestion

CO2 Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

Contact Info

Product

Resources

About

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue