Mesoporous and adsorption behavior of algal biochar prepared via sequential hydrothermal carbonization and ZnCl2 activation

Nguyen, Thanh-Binh; Truong, Quoc-Minh; Chen, Chiu-Wen; Doong, Ruey‐an; Chen, Wei‐Hsin; Dong, Cheng–Di

doi:10.1016/j.biortech.2021.126351

Cited by 91 publications

(24 citation statements)

References 38 publications

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“…49 In this study, the Temkin model for FMBC was also well fitted owing to excellent ( R 2 = 0.9085), indicating electrostatic interaction to be significantly responsible for the adsorption mechanism of OFX using FMBC. 47 The b T values of MBC and FMBC (4.9763 and 13.8008 kJ mol −1 ) were higher than 4.2 kJ mol −1 , demonstrating that chemical adsorption was the key process in the adsorption of OFX on biochars and therefore might have an existence of endothermic adsorption, 2 which was consistent with the results of the kinetic analysis described above. According to the Langmuir model, the saturation adsorption capacity ( q m ) of FMBC was 142.1914 mg g −1 for OFX, which was about 5 and 10 times higher than those of MBC (26.4475 mg g −1 ) and BC (14.2864 mg g −1 ), respectively.…”

Section: Resultssupporting

confidence: 82%

“…1 Although their concentrations may be low in these environments, residual antibiotics could cause serious environmental and health problems due to cumulative effects, such as disruption of the human immune system, growth and escalation of antibiotic resistance genes, and damage to aquatic ecosystems. 2 The UK Antibiotic Crisis Survey analysis stated that approximately 700, thousand people worldwide died each year from drug-resistant bacterial infections and this number was expected to reach 10 million by 2050. 3 Fluoroquinolone antibiotics, one of the most commonly used antibacterial drugs in the world, as the third largest sales of antibiotics, its global sales in 2009 reached 7.1 billion US dollars.…”

Section: Introductionmentioning

confidence: 99%

“…The objectives of this study were to: (1) investigate the main adsorption mechanism of FMBC on OFX by characterization, kinetic, and isothermal analysis. (2) The effects of initial pH and coexisting ions on the adsorption capacity of FMBC were systematically investigated. (3) The stability and regeneration performance of FMBC were explored to evaluate its practical application.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Hao

et al. 2022

RSC Adv.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Hao

et al. 2022

RSC Adv.

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“…The main purpose of metal salts treatment during the HTC process is to speed up the reaction rate, regulate pore structure, increase the surface area, and provide more active sites for the adsorption of pollutants [ 49 ]. Nguyen’s research found that the microporosity fraction, active surface area and active sites of hydrothermal carbon obtained from algal were significantly increased after activating with ZnCl 2 , and thus the high adsorption capacity (400 mg/g) for ciprofloxacin was achieved [ 50 ].…”

Section: Hydrochar Modification To Obtain Activated Carbonmentioning

confidence: 99%

Biomass-Based Hydrothermal Carbons for the Contaminants Removal of Wastewater: A Mini-Review

Wang

et al. 2023

IJMS

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The preparation of adsorbents with eco-friendly and high-efficiency characteristics is an important approach for pollutant removal, and can relieve the pressure of water shortage and environmental pollution. In recent studies, much attention has been paid to the potential of hydrothermal carbonization (HTC) from biomass, such as cellulose, hemicellulose, lignin, and agricultural waste for the preparation of adsorbents. Hereby, this paper summarizes the state of research on carbon adsorbents developed from various sources with HTC. The reaction mechanism of HTC, the different products, the modification of hydrochar to obtain activated carbon, and the treatment of heavy metal pollution and organic dyes from wastewater are reviewed. The maximum adsorption capacity of carbon from different biomass sources was also evaluated.

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“…The biochar can be used to remove the micropollutants from the aqueous phase. Recently, Nguyen et al [ 244 ] converted the algal species Ascophyllum nodosum into biochar using ZnCl 2 as a chemical activating agent. The synthesized biochar had a very high adsorption capacity (150–400 mg g −1 ) while removing ciprofloxacin.…”

Section: Resource Recoverymentioning

confidence: 99%

A comprehensive review on the use of algal-bacterial systems for wastewater treatment with emphasis on nutrient and micropollutant removal

et al. 2022

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The scarcity of water resources and environmental pollution have highlighted the need for sustainable wastewater treatment. Existing conventional treatment systems are energy-intensive and not always able to meet stringent disposal standards. Recently, algal-bacterial systems have emerged as environmentally friendly sustainable processes for wastewater treatment and resource recovery. The algal-bacterial systems work on the principle of the symbiotic relationship between algae and bacteria. This paper comprehensively discusses the most recent studies on algal-bacterial systems for wastewater treatment, factors affecting the treatment, and aspects of resource recovery from the biomass. The algal-bacterial interaction includes cell-to-cell communication, substrate exchange, and horizontal gene transfer. The quorum sensing (QS) molecules and their effects on algal–bacterial interactions are briefly discussed. The effect of the factors such as pH, temperature, C/N/P ratio, light intensity, and external aeration on the algal-bacterial systems have been discussed. An overview of the modeling aspects of algal-bacterial systems has been provided. The algal-bacterial systems have the potential for removing micropollutants because of the diverse possible interactions between algae-bacteria. The removal mechanisms of micropollutants – sorption, biodegradation, and photodegradation, have been reviewed. The harvesting methods and resource recovery aspects have been presented. The major challenges associated with algal-bacterial systems for real scale implementation and future perspectives have been discussed. Integrating wastewater treatment with the algal biorefinery concept reduces the overall waste component in a wastewater treatment system by converting the biomass into a useful product, resulting in a sustainable system that contributes to the circular bioeconomy.

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Mesoporous and adsorption behavior of algal biochar prepared via sequential hydrothermal carbonization and ZnCl2 activation

Cited by 91 publications

References 38 publications

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Biomass-Based Hydrothermal Carbons for the Contaminants Removal of Wastewater: A Mini-Review

A comprehensive review on the use of algal-bacterial systems for wastewater treatment with emphasis on nutrient and micropollutant removal

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