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

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption ...

JoVE Journal
Environment

A subscription to JoVE is required to view this content. Sign in or start your free trial.

JoVE Journal Environment

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

Full Text

10,575 Views

10:44 min

February 12, 2019

DOI: 10.3791/58161-v

Kunquan Li¹, Zeqing Wan¹

¹College of Engineering,Nanjing Agricultural University

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.

Here, we present a protocol to synthesize nitrogen/oxygen dual-doped mesoporous carbon from biomass by chemical activation in different pyrolysis modes followed by modification. We demonstrate that the microwave pyrolysis benefits the subsequent modification process to simultaneously introduce more nitrogen and oxygen functional groups on the carbon.

This method can help answer key questions in the utilization of biomass and the wastewater remediation field, such as preparation of modified biomass-based carbon for removal of heavy metals in wastewater. The main advantage of this technique is that the microwave pyrolysis benefits the subsequential modification process to simultaneously introduce more nitrogen and oxygen functional groups of carbon. To begin, rinse the bagasse with deionized water, and put the samples in a drying oven at 100 degrees Celsius for 10 hours.

Crush the dried bagasse with a grinder. Then, sieve the powder through a 50-mesh sieve. Now, place 30 grams of fine bagasse powder into a 15-weight-percent phosphoric acid solution in a one-to-one weight ratio for 24 hours.

View the full transcript and gain access to thousands of scientific videos

Explore More Videos

Biomass Mesoporous Carbon Nitrogen Oxygen Chelating Cu(II)Adsorption Microwave Pre-pyrolysis Bagasse Phosphoric Acid Activated Carbon Hydrochloric Acid Sulfuric Acid Nitric Acid