The potential of biochar as sorptive media for removal of hazardous benzene in air

Khan, Azmatullah; Szulejko, Jan E.; Samaddar, Pallabi; Kim, Ki‐Hyun; Liu, Botao; Maitlo, Hubdar Ali; Yang, Xiao; Ok, Yong Sik

doi:10.1016/j.cej.2018.10.193

Cited by 102 publications

(20 citation statements)

References 43 publications

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“…Therefore, the highest K P value for nCD-DBC can be designated to its stronger sorptive affinity towards MB than other tested adsorbents 41 . Larger K P values at higher adsorption capacities have already been reported 42 . Hence, these results suggested that the synthesized sorbents effectively sorbed the MB dye from aqueous media through the mono-and multi-layer sorption process.…”

Section: Mb Sorption Batches Effects Of Ph On Mb Sorptionmentioning

confidence: 52%

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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Novel carbon nanodots (nCD-DBC) and nano zero-valent iron composites (nZVI-DBC) were synthesized using date palm waste-derived biochar (DBC). The synthesized materials were analyzed for chemical and structural composition by using FTIR, SEM, XRD, and TGA, and evaluated for their methylthioninium chloride dye (MB) removal efficiency from contaminated aqueous solutions. pH 7.0 was found optimum for the highest MB removal in sorption batch studies. Kinetics sorption of MB onto the sorbents was best described by pseudo-second-order (R2 = 0.93–0.99) and Elovich models (R2 = 0.86–0.97) implying that sorption was being controlled by chemisorption. Langmuir model predicted maximum sorption capacities for nCD-DBC, nZVI-DBC, and DBC were 1558.66, 1182.90, and 851.67 mg g−1, respectively, which correlated with the results of kinetics sorption. Likewise, nCD-DBC yielded the highest partition coefficient (7067 mL g−1), followed by nZVI-DBC (1460 mL g−1), and DBC (930 mL g−1). Post-sorption XRD, FTIR, and SEM analyses depicted the binding of MB onto the sorbents. It was suggested that electrostatic interactions, π–π electron donor-accepter interactions, degradation, and diffusion were responsible for MB removal by the synthesized materials. Therefore, the nCD-DBC, nZVI-DBC, and DBC can potentially be used for scavenging MB dye from contaminated aqueous solutions.

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Section: Mb Sorption Batches Effects Of Ph On Mb Sorptionmentioning

confidence: 52%

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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“…The reagents frequently used are acid, alkali and metal salt (Aguayo-Villarreal et al, 2017;Hu et al, 2017;Bedane et al, 2018). Khan et al (2019) developed biowaste-derived biochars with KOH activation for 2 h, which showed high adsorption capacity of 144 mg g -1 on benzene. Compared with the virgin biochar, the specific surface area and total pore volume were increased from 228 to 1397 m 2 .g -1 , and 0.02 to 0.51 cm 3 g -1 .…”

Section: Biocharmentioning

confidence: 99%

A critical review on VOCs adsorption by different porous materials: Species, mechanisms and modification methods

Zhu

Shen

Luo

2020

Journal of Hazardous Materials

607

193

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Volatile organic compounds (VOCs) have attracted world-wide attention regarding their serious hazards on ecological environment and human health. Industrial processes such as fossil fuel combustion, petrochemicals, painting, coatings, pesticides, plastics, contributed to the large proportion of anthropogenic VOCs emission. Destructive methods (catalysis oxidation and biofiltration) and recovery methods (absorption, adsorption, condensation and membrane separation) have been developed for VOCs removal.Adsorption is established as one of the most promising strategies for VOCs abatement thanks to its characteristics of cost-effectiveness, simplicity and low energy consumption. The prominent progress in VOCs adsorption by different kinds of porous materials (such as carbon-based materials, oxygen-contained materials, organic polymers and composites is carefully summarized in this work, concerning the mechanism of adsorbate-adsorbent interactions, modification methods for the mentioned porous materials, and enhancement of VOCs adsorption capacity. This overview is to provide a comprehensive understanding of VOCs adsorption mechanisms and up-to-date progress of modification technologies for different porous materials.

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“…It was shown that H 2 S removal is better in the presence of hydroxide and carboxylic functional groups [51]. Other gases that have been removed with biochar include; ammonia and toluene [52], ozone [53], benzene [54], methyl tert-butyl ether and [55]. Though agriculture wastes are abundant for the production of biochar, it is however necessary to practice the sustainable utilisation of biochar (Figure 1).…”

Section: Role Of Biochar In Pollution Managementmentioning

confidence: 99%

Sustainable Use of Biochar in Environmental Management

Abukari¹,

Imoro²,

Imoro³

et al. 2021

Environmental Health

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Conversion of agricultural wastes into eco-friendly and low cost biochar is not only a smart recycling strategy but a panacea to environmental pollution management. Agricultural wastes biochar can be an effective alternative technique for controlling contaminants due to its low cost, high-efficiency, simple to use, ecological sustainability and reliability in terms of public safety. Biochars have made substantial breakthroughs in reducing greenhouse gases emissions, reducing soil nutrient leaching, sequester atmospheric carbon into the soil, increasing agricultural productivity, and reducing bioavailability of environmental contaminants. Recent advances in the understanding of biochars warrant a proper scientific evaluation of the relationship between its properties and impact on soil properties, environmental pollutant remediation, plant growth, yield, and resistance to biotic and abiotic stresses. The main factors controlling biochar properties include the nature of feedstock, heat transfer rate, residence time and pyrolysis temperature. Biochar efficacy in pollutants management largely depends on its elemental composition, ion-exchange capacity, pore size distribution and surface area, which vary with the nature of feedstock, preparation conditions and procedures. The chapter explored the possibility of using biochar from agricultural wastes as a suitable alternative for the remediation of environmental pollutants, soil conditioning and the long-term biochar application in the environment.

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The potential of biochar as sorptive media for removal of hazardous benzene in air

Cited by 102 publications

References 43 publications

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

A critical review on VOCs adsorption by different porous materials: Species, mechanisms and modification methods

Sustainable Use of Biochar in Environmental Management

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