Biochar for soil remediation: A comprehensive review of current research on pollutant removal

Environmental Pollution, Journal Year: 2023, Volume and Issue: 337, P. 122571 - 122571

Published: Sept. 16, 2023

Language: Английский

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Band structure tuning of ZnO/CuO composites for enhanced photocatalytic activity

Journal of Saudi Chemical Society, Journal Year: 2023, Volume and Issue: 27(3), P. 101639 - 101639

Published: April 1, 2023

The toxic dye pigments, even in small quantities, can damage ecosystems. Removing organic, inorganic, and microbiological contaminants from wastewater via heterogeneous photocatalysis is a promising method. Herein, we report the band structure tuning of ZnO/CuO nanocomposites to enhance photocatalytic activity. were synthesized by chemical approach using step-wise implantation p-type semiconductor CuO n-type ZnO. Various characterization techniques such as X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FESEM), energy dispersive (EDX) UV spectroscopy used investigate crystal structure, surface morphology, elemental composition optical properties samples. As content increased 10% 50% nanocomposites, bandgap decreased 3.36 2.14 eV. activity samples was evaluated against degradation methylene blue (MB) under visible irradiation. Our study demonstrates novel p–n junction oxide photocatalyst based on wt. CuO/ZnO with superior Effectively 66.6% increase rate achieved for nanocomposite compared pure ZnO nanoparticles.

Language: Английский

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Recent advances in water remediation from toxic heavy metals using biochar as a green and efficient adsorbent: A review

Case Studies in Chemical and Environmental Engineering, Journal Year: 2023, Volume and Issue: 8, P. 100495 - 100495

Published: Sept. 22, 2023

Heavy metal pollution is a serious environmental problem that poses threat to human health and the environment. Water by toxic heavy metals major cause of this problem, it can destroy ecosystems, spread disease, make drinking water unsafe. Biochar promising green adsorbent for removing from water. It derived various biomasses, including agricultural organic wastes, has high carbon content, surface area, stability. These properties enable biochar effectively remove through cation exchange adsorption. This review summarizes recent advances in modification enhanced adsorption metals. discusses advantages, applications, challenges, prospects method. Biochar-based advanced oxidation processes (AOPs) have shown promise decomposition complexes enhancement capacity free ions industrial wastewater. The also highlights research gaps limitations remediation proposes future directions. Future should focus on developing environmentally friendly cost-effective technologies scaling up biochar-based removal applications. Scheme 1 illustrates overall summarized presentation article as graphical abstract.

Language: Английский

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Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals

Chemical Engineering Science, Journal Year: 2023, Volume and Issue: 281, P. 119129 - 119129

Published: July 28, 2023

In this study, for the first time, a selenium-doped mesoporous biochar was prepared and efficiently employed sodium diclofenac reactive orange 16 dye adsorption. The characterization results indicated that selenium doping had remarkable impact on Biochar-Se morphological physicochemical structures. efficacy of developed samples (RO-16) (DCF) removals fully investigated. For both molecules (DCF RO-16), Liu's equilibrium model offered best fitness with maximum adsorption capacity values 355 mg g−1 DCF 538 RO-16 Biochar-Se. Multiple mechanisms including pore filling, π-π interaction, hydrogen bonding between DCF/RO-16 were involved in process. Se-nanoparticles formed metal–oxygen bonds, which boosted molecules. current work feasible approach development Se-doped adsorbent is incredibly effective treating wastewater.

Language: Английский

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Role of biochar as a greener catalyst in biofuel production: Production, activation, and potential utilization – A review

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: unknown, P. 105732 - 105732

Published: Sept. 1, 2024

Language: Английский

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Metal Oxide/Biochar Hybrid Nanocomposites for Adsorption and Photocatalytic Degradation of Textile Dye Effluents: A Review

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101004 - 101004

Published: Jan. 1, 2025

Language: Английский

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Guadua angustifolia biochar/TiO2 composite and biochar as bio-based materials with environmental and agricultural application

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 2, 2025

Globally, the companies that make commercial use of bamboo culms produce different kinds solid waste rich in lignocellulosic biomass, which some cases is not used and discarded landfills or incinerated open air; losing possibility recovering them using other productive sectors. The research objective were to a biochar from Guadua agustifolia Kunth sawdust, evaluate its potential environmental agricultural use, obtain biochar/TiO2 composite inactivate Escherichia coli as soil conditioner medicinal plants producing phenolic compounds flavonoids. Biochar (produced at 300 °C for 1 h) involved TiO2 450 h inactivation E. (initial concentration: 6.5 ± 0.3 Log10 CFU mL− 1). For agriculture, 2% was B. pilosa L. G. angustifolia plant growth 90 days. had high photocatalytic activity on coli, generating final count 1.97 0.2 after 60 min. (2%) increased total phenol flavonoid content phenols angustifolia, tested nursery stage. This study provides new information conversion sawdust an alternative bio-based materials with applications. In addition, obtaining could positively impact production chain Colombia because renewable globally accepted alternatives help capture gaseous emissions causing greenhouse effect.

Language: Английский

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Nano Modifications of Biochar to Enhance Heavy Metal Adsorption from Wastewaters: A Review

ACS Omega, Journal Year: 2022, Volume and Issue: 7(50), P. 45825 - 45836

Published: Dec. 9, 2022

Biochar (BC) is a carbon-rich material that can be obtained by thermal decomposition of agricultural solid waste under oxygen-limited conditions. It has received increasing attention as cost-effective sorbent to treat metal-contaminated water due attributes such high porosity and the presence various functional groups. The heavy metal (HM) sorption removal capacity BC enhanced developing novel biochar nanohybrids (BNHs) produced via surface modification with nanomaterials. Loading nanomaterials on improve its physicochemical properties through alterations in group profile, porosity, availability active sites which enhance HM adsorption ability. This manuscript provides information preparation nano-based hybrids emanating from type modifying agent for different ions wastewaters, underlying mechanisms have been discussed. Further, this compilation discusses published literature depicting influence processes nanobiochar hybrids. potential risks BNHs reviewed effectively avoid possible harmful impacts environment, future research directions proposed.

Language: Английский

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Sustainable high-efficiency removal of cationic and anionic dyes using new super adsorbent biochar: performance, isotherm, kinetic and thermodynamic evaluation

Environmental Science Water Research & Technology, Journal Year: 2023, Volume and Issue: 9(10), P. 2643 - 2663

Published: Jan. 1, 2023

A green, environment-friendly, inexpensive non-modified biochar was employed for removal of unparalleled pH sensitive cationic and anionic dyes from wastewater.

Language: Английский

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Multifunctional Cross-Linked Shrimp Waste-Derived Chitosan/MgAl-LDH Composite for Removal of As(V) from Wastewater and Antibacterial Activity

ACS Omega, Journal Year: 2023, Volume and Issue: 8(11), P. 10051 - 10061

Published: March 8, 2023

This work synthesized a novel chitosan-loaded MgAl-LDH (LDH = layered double hyroxide) nanocomposite, which was physicochemically characterized, and its performance in As(V) removal antimicrobial activity evaluated. Chitosan-loaded nanocomposite (CsC@MgAl-LDH) prepared using cross-linked natural chitosan from shrimp waste modified by Mg–Al. The main mechanisms predominating the separation of were elucidated. characteristic changes confirming modification with analyzed through Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis-differential thermal analysis, Brunauer-Emmett-Teller measurements. Porosity increased surface area play an important role arsenic adsorption microbial activity. Adsorption kinetics follows general order statistically confirmed Bayesian Information Criterion differences. To understand process, Langmuir, Freundlich, Liu isotherms studied at three different temperatures. It found that Liu's isotherm model best-fitted model. CsC@MgAl-LDH showed maximum capacity 69.29 mg g–1 toward 60 °C. observed material rose increase temperature. spontaneous behavior endothermic nature thermodynamic parameters study. Minimal change percentage coexisting ions. regeneration adsorption–desorption cycles revealed adsorbent is economically efficient. very effective against Staphylococcus aureus Bacillus subtilus.

Language: Английский

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