Sustainable remediation of hazardous environmental pollutants using biochar-based nanohybrid materials

Zhao, Yuping; Qamar, Sarmad Ahmad; Qamar, Mahpara; Bilal, Muhammad; Iqbal, Hafiz M.N.

doi:10.1016/j.jenvman.2021.113762

Cited by 62 publications

(16 citation statements)

References 234 publications

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“…Higher operating temperatures lead to progressive enlargement and ordering processes of graphic domains through turbostratic rearrangement [2,69,70]. The properties of biochar, such as surface area, porosity, and grindability, are controlled by several factors, such as d morphology, chemical composition of feedstock, and the type of post-treatment technique used, e.g., physical activation or surface tailoring [70,71,78]. The thermochemical processes chosen for production of biochar play a critical role in determining the final physical properties of the biochar filler.…”

Section: Biocharmentioning

confidence: 99%

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Enhancing the Potential of Polymer Composites Using Biochar as a Filler: A Review

Aboughaly,

Babaei-Ghazvini,

Dhar

et al. 2023

Polymers

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This article discusses the scope biochar’s uses; biochar is a sustainable organic material, rich in carbon, that can be synthesized from various types of biomass feedstock using thermochemical reactions such as pyrolysis or carbonization. Biochar is an eco-friendly filler material that can enhance polymer composites’ mechanical, thermal, and electrical performances. In comparison to three inorganic fillers, namely carbon black, carbon nanotubes (CNT), and carbon filaments, this paper explores the optimal operating conditions for regulating biochar’s physical characteristics, including pore size, macro- and microporosity, and mechanical, thermal, and electrical properties. Additionally, this article presents a comparative analysis of biochar yield from various thermochemical processes. Moreover, the review examines how the surface functionality, surface area, and particle size of biochar can influence its mechanical and electrical performance as a filler material in polymer composites at different biochar loads. The study showcases the outstanding properties of biochar and recommends optimal loads that can improve the mechanical, thermal, and electrical properties of polymer composites.

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Section: Biocharmentioning

confidence: 99%

“…The thermochemical processes chosen for production of biochar play a critical role in determining the final physical properties of the biochar filler. The different parameters such as production temperature, reactor dimensions, and lignin content in feedstock play a role in controlling the porosity and surface area of biochar [70,78].…”

Section: Biocharmentioning

confidence: 99%

Enhancing the Potential of Polymer Composites Using Biochar as a Filler: A Review

Aboughaly,

Babaei-Ghazvini,

Dhar

et al. 2023

Polymers

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“…Biochar is a carbon-rich material derived from pyrolysis, gasification, or hydrothermal carbonization of a wide range of biomass including forestry and agricultural residues, food waste, animal manure, and sludge . Biochars have exhibited a few desirable characteristics, including rich oxygen functional groups and high porosity, high specific surface area (SSA), and excellent ion-exchange capacity . Owing to these advantageous properties, biochar has received much attention as a cost-effective and eco-friendly material in many emerging fields such as environmental remediation, , catalyst supports, and energy storage. − However, biochars produced by pyrolysis or hydrothermal carbonization methods usually have low SSAs.…”

Section: Introductionmentioning

confidence: 99%

“…Biochars have exhibited a few desirable characteristics, including rich oxygen functional groups and high porosity, high specific surface area (SSA), and excellent ion-exchange capacity . Owing to these advantageous properties, biochar has received much attention as a cost-effective and eco-friendly material in many emerging fields such as environmental remediation, , catalyst supports, and energy storage. − However, biochars produced by pyrolysis or hydrothermal carbonization methods usually have low SSAs. A post-treatment activation procedure is required using acid (HNO 3 and H 3 PO 4 ), base (KOH and NaOH), oxidant (H 2 O 2 ), sulfonating agent (SO 3 H), and ZnCl 2 .…”

Section: Introductionmentioning

confidence: 99%

Activation of Biochars by Waste Phosphoric Acids: An Integrated Disposal Route of Waste Acids and Solid Waste

Niu

Jin

Sun

et al. 2021

ACS Sustainable Chem. Eng.

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Waste phosphoric acid can pose severe adverse effects to environments and ecological systems if directly discharged. As an important and irreplaceable element, the recovery of phosphorus (P) is essential for the sustainability of modern world. To recover P from waste acids, we impregnated coffee ground or chicken manure into waste phosphoric acid polishing solution to store H 3 PO 4 in biomass. After activated/carbonized at high temperature and subsequent washing with purified water, H 3 PO 4 was recollected and activated carbon (AC) was achieved. The results indicated that the coffee ground was ideal reagents to recover P, and the recovery of H 3 PO 4 was as high as 70% when the carbonization temperature was 500−600 °C, and the obtained AC was of the characteristic of the P dopant, large surfaces (315−811 m 2 /g), and mesopores. However, chicken manure led to little loss of P at high temperatures by converting P 2 O 5 /H 3 PO 4 into metaphosphate salts. This novel strategy realizes efficient utilization of solid waste, P recovery, heavy metal separation, and organic chemical elimination from waste acids, without producing new solid or liquid waste.

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“…Due to their small size, nanomaterials show unique characteristics, such as they possess much surface area and a large surface-to-volume ratio (Hristovski et al, 2007). Such properties of nanomaterials, including carbon nanotubes (CNTs), metal organic frameworks (MOFs), nanohybrids, MXene; graphene, and metallic nanoparticles increase their applied potential in different sectors of the modern world (Bilal et al, 2020;Zhao et al, 2021;Zhang et al, 2021;Gan et al, 2022). Properties like catalytic potential and high reactivity of nanoparticles improve their adsorption capacity as a result, they become good adsorbing materials than general materials.…”

Section: Introduction: Nanomaterials In Water Treatmentmentioning

confidence: 99%

Carbon-based nanomaterials with multipurpose attributes for water treatment: Greening the 21st-century nanostructure materials deployment

Hussain

Bilal

Iqbal

2021

Biomat Polymers Horizon

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Nanotechnology is a top priority research area in a plethora of technological and scientific fields due to its economic impact and versatile capability. Among various applications, water treatment is considered among the most prospective utilization of nanotechnology, where a large number of nanostructured materials can remediate water using several different mechanistic ways. For achieving this, nanomaterials can be combined and modified with active moieties to develop different nanocomposites with structural diversity and unique physicochemical attributes. In addition, they have also been designed and integrated into membranes for improving water treatment performance. In this review, we provide an up-to-date overview of various nanostructured materials as nanoadsorbents, such as carbon-based nanomaterials, nanocomposites, and nanomembranes for remediating pesticide-based pollutants from aqueous systems using CNTs. Notably, nanomaterials are capable of efficiently removing environmental pollutants given their substantial surface area, high absorptive ability, and excellent environmental selectivity and compatibility.

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Sustainable remediation of hazardous environmental pollutants using biochar-based nanohybrid materials

Cited by 62 publications

References 234 publications

Enhancing the Potential of Polymer Composites Using Biochar as a Filler: A Review

Enhancing the Potential of Polymer Composites Using Biochar as a Filler: A Review

Activation of Biochars by Waste Phosphoric Acids: An Integrated Disposal Route of Waste Acids and Solid Waste

Carbon-based nanomaterials with multipurpose attributes for water treatment: Greening the 21st-century nanostructure materials deployment

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