Dispersion mechanism of coal water slurry prepared by mixing various high-concentration organic waste liquids

Shuangni Wang; Jianzhong Liu; Sarma V. Pisupati; Dedi Li; Zhihua Wang; Jun Cheng

doi:10.1016/j.fuel.2020.119340

Dispersion mechanism of coal water slurry prepared by mixing various high-concentration organic waste liquids

Shuangni Wang, Jianzhong Liu, Sarma V. Pisupati, Dedi Li, Zhihua Wang, Jun Cheng

John and Willie Leone Department of Energy & Mineral Engineering (EME)

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

High-concentration organic waste liquids have complex components and their treatment is difficult. These liquids also contain hydrophobic organic pollutants. The preparation of waste liquid coal water slurry (WCWS) can aid with environmental protection and resource utilization. In this study, xanthan gum was selected from 11 types of additives because it overcomes the problem of solution incompatibility during the mixing of various high-concentration organic waste liquids. The experimental results showed that with 0.08 wt% addition of xanthan gum, no stratification occurred in the mixed waste liquid and the apparent viscosity of the WCWS was 921.1 mPa∙s. In this study, the role of xanthan gum was studied, and the effect of its addition on the coal particle surface was characterized by zeta potential and contact angle measurement. In addition, various interaction energies in the WCWS system were calculated using the extended DLVO theory. The results showed that xanthan gum introduced steric hindrance interaction energy into the WCWS system, enabling the system to be stably dispersed.

Original language	English (US)
Article number	119340
Journal	Fuel
Volume	287
DOIs	https://doi.org/10.1016/j.fuel.2020.119340
State	Published - Mar 1 2021

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

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10.1016/j.fuel.2020.119340

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title = "Dispersion mechanism of coal water slurry prepared by mixing various high-concentration organic waste liquids",

abstract = "High-concentration organic waste liquids have complex components and their treatment is difficult. These liquids also contain hydrophobic organic pollutants. The preparation of waste liquid coal water slurry (WCWS) can aid with environmental protection and resource utilization. In this study, xanthan gum was selected from 11 types of additives because it overcomes the problem of solution incompatibility during the mixing of various high-concentration organic waste liquids. The experimental results showed that with 0.08 wt% addition of xanthan gum, no stratification occurred in the mixed waste liquid and the apparent viscosity of the WCWS was 921.1 mPa∙s. In this study, the role of xanthan gum was studied, and the effect of its addition on the coal particle surface was characterized by zeta potential and contact angle measurement. In addition, various interaction energies in the WCWS system were calculated using the extended DLVO theory. The results showed that xanthan gum introduced steric hindrance interaction energy into the WCWS system, enabling the system to be stably dispersed.",

author = "Shuangni Wang and Jianzhong Liu and Pisupati, {Sarma V.} and Dedi Li and Zhihua Wang and Jun Cheng",

note = "Funding Information: The authors would like to acknowledge the financial support provided by the National Key Research and Development Program of China (Grant No. 2016YFB0600505) and 2019 Zhejiang University Academic Award for Outstanding Doctoral Candidates. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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doi = "10.1016/j.fuel.2020.119340",

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AU - Wang, Shuangni

AU - Liu, Jianzhong

AU - Pisupati, Sarma V.

AU - Li, Dedi

AU - Wang, Zhihua

AU - Cheng, Jun

N1 - Funding Information: The authors would like to acknowledge the financial support provided by the National Key Research and Development Program of China (Grant No. 2016YFB0600505) and 2019 Zhejiang University Academic Award for Outstanding Doctoral Candidates. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2021/3/1

Y1 - 2021/3/1

N2 - High-concentration organic waste liquids have complex components and their treatment is difficult. These liquids also contain hydrophobic organic pollutants. The preparation of waste liquid coal water slurry (WCWS) can aid with environmental protection and resource utilization. In this study, xanthan gum was selected from 11 types of additives because it overcomes the problem of solution incompatibility during the mixing of various high-concentration organic waste liquids. The experimental results showed that with 0.08 wt% addition of xanthan gum, no stratification occurred in the mixed waste liquid and the apparent viscosity of the WCWS was 921.1 mPa∙s. In this study, the role of xanthan gum was studied, and the effect of its addition on the coal particle surface was characterized by zeta potential and contact angle measurement. In addition, various interaction energies in the WCWS system were calculated using the extended DLVO theory. The results showed that xanthan gum introduced steric hindrance interaction energy into the WCWS system, enabling the system to be stably dispersed.

AB - High-concentration organic waste liquids have complex components and their treatment is difficult. These liquids also contain hydrophobic organic pollutants. The preparation of waste liquid coal water slurry (WCWS) can aid with environmental protection and resource utilization. In this study, xanthan gum was selected from 11 types of additives because it overcomes the problem of solution incompatibility during the mixing of various high-concentration organic waste liquids. The experimental results showed that with 0.08 wt% addition of xanthan gum, no stratification occurred in the mixed waste liquid and the apparent viscosity of the WCWS was 921.1 mPa∙s. In this study, the role of xanthan gum was studied, and the effect of its addition on the coal particle surface was characterized by zeta potential and contact angle measurement. In addition, various interaction energies in the WCWS system were calculated using the extended DLVO theory. The results showed that xanthan gum introduced steric hindrance interaction energy into the WCWS system, enabling the system to be stably dispersed.

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Dispersion mechanism of coal water slurry prepared by mixing various high-concentration organic waste liquids

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