Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Kunquan Li; Zeqing Wan

doi:10.3791/58161

Préparation de base de biomasse mésoporeux carbone avec azote supérieur-/ Adsorption chélateurs d...

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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

Préparation de base de biomasse mésoporeux carbone avec azote supérieur-/ Adsorption chélateurs de l’oxygène pour cu (ii) par le biais de micro-ondes pyrolyse pré

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10:44 min

February 12, 2019

DOI: 10.3791/58161-v

Kunquan Li¹, Zeqing Wan¹

¹College of Engineering,Nanjing Agricultural University

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Overview

This article presents a protocol for synthesizing nitrogen/oxygen dual-doped mesoporous carbon from biomass using chemical activation and microwave pyrolysis. The method enhances the introduction of functional groups, making it beneficial for wastewater remediation applications.

Key Study Components

Area of Science

Biomass utilization
Wastewater remediation
Carbon synthesis

Background

Modified biomass-based carbon can effectively remove heavy metals from wastewater.
Microwave pyrolysis improves the modification process.
Functional groups on carbon are crucial for adsorption properties.
Understanding these processes can advance environmental applications.

Purpose of Study

To develop a method for synthesizing dual-doped mesoporous carbon.
To investigate the effects of microwave pyrolysis on carbon modification.
To explore applications in wastewater treatment.

Methods Used

Rinsing bagasse with deionized water.
Drying samples at 100 degrees Celsius for 10 hours.
Crushing and sieving the dried bagasse.
Soaking bagasse powder in phosphoric acid solution for 24 hours.

Main Results

Microwave pyrolysis enhances the introduction of nitrogen and oxygen groups.
Modified carbon shows improved heavy metal adsorption capabilities.
The synthesis method is efficient and reproducible.
Results support the use of biomass in environmental applications.

Conclusions

The protocol effectively synthesizes functionalized carbon from biomass.
Microwave pyrolysis is a key factor in enhancing carbon properties.
This research contributes to sustainable practices in wastewater management.

Frequently Asked Questions

What is the main advantage of using microwave pyrolysis?

Microwave pyrolysis enhances the modification process, allowing for more functional groups to be introduced simultaneously.

How does this method contribute to wastewater treatment?

The synthesized carbon can effectively adsorb heavy metals from wastewater, improving remediation efforts.

What materials are used in the synthesis process?

The primary material used is bagasse, which is treated with phosphoric acid and subjected to microwave pyrolysis.

How long does the drying process take?

The samples are dried at 100 degrees Celsius for 10 hours.

What are the potential applications of this research?

The research can be applied in environmental science, particularly in wastewater treatment and biomass utilization.

Nous présentons ici un protocole pour faire la synthèse de carbone mésoporeux dopé au double azote/oxygène provenant de la biomasse par activation chimique en modes différents pyrolyse suivie de modification. Nous démontrons que la pyrolyse du four à micro-ondes profite du processus de modification ultérieure pour introduire simultanément plus d’azote et d’oxygène des groupes fonctionnels sur le carbone.

Cette méthode peut aider à répondre à des questions clés dans l’utilisation de la biomasse et du champ d’assainissement des eaux usées, comme la préparation de carbone à base de biomasse modifié pour l’élimination des métaux lourds dans les eaux usées. Le principal avantage de cette technique est que la pyrolyse micro-ondes profite au processus de modification subséquent pour introduire simultanément plus d’azote et d’oxygène groupes fonctionnels de carbone. Pour commencer, rincer la bagasse à l’eau déionisée et mettre les échantillons dans un four à séchage à 100 degrés Celsius pendant 10 heures.

Écraser la bagasse séchée à l’avec un broyeur. Ensuite, tamisez la poudre à travers un tamis de 50 mailles. Maintenant, placez 30 grammes de poudre de bagasse fine dans une solution d’acide phosphorique de 15 pour cent de poids dans un rapport de poids un-à-un pendant 24 heures.

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