The Influence of Stock Consistency on the Pollution Load in Washing Process

The influences of stock consistency on the kappa number, residual alkali of pulp, flow direction of lignin, chemical oxygen demand, oxidation with dichromate (CODCr), and five-day biochemical oxygen demand (BOD5) in effluents were investigated in a washing process. Compared with 15% stock consistenc...

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Main Authors: Tiantian Chen, Youming Li, Lirong Lei, Mingzhu Hong, Qihui Sun, Yi Hou
Format: Article
Language:English
Published: North Carolina State University 2016-01-01
Series:BioResources
Subjects:
Online Access:http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_2214_Chen_Stock_Consistency_Pollution_Load
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author Tiantian Chen
Youming Li
Lirong Lei
Mingzhu Hong
Qihui Sun
Yi Hou
author_facet Tiantian Chen
Youming Li
Lirong Lei
Mingzhu Hong
Qihui Sun
Yi Hou
author_sort Tiantian Chen
collection DOAJ
description The influences of stock consistency on the kappa number, residual alkali of pulp, flow direction of lignin, chemical oxygen demand, oxidation with dichromate (CODCr), and five-day biochemical oxygen demand (BOD5) in effluents were investigated in a washing process. Compared with 15% stock consistency, 35% stock consistency could lead to a decrease of at least 25% in the consumption of washing water while cutting 75.27% and 46.29% of CODCr and BOD5 in washing effluents, respectively. Moreover, the residual lignin in effluents were reduced greatly from 39.35 g·t-1 to 12.76 g·t-1, which will be beneficial to treatment of washing and bleaching effluent. All the results showed that a higher stock consistency in the washing process could decrease the consumption of washing water, the generation of pollution, and the toxicity in bleaching effluent.
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spelling doaj.art-ca4f1de4e4004031a8b569ec98bd09c92022-12-21T22:59:01ZengNorth Carolina State UniversityBioResources1930-21261930-21262016-01-011112214222310.15376/biores.11.1.2214-2223The Influence of Stock Consistency on the Pollution Load in Washing ProcessTiantian Chen0Youming Li1Lirong Lei2Mingzhu Hong3Qihui Sun4Yi Hou5South China University of Technology; China South China University of Technology; ChinaSouth China University of Technology; ChinaState Key Laboratory of Pulp and Paper Engineering ,South China University of Technology, Guangzhou 510640, China; National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China; ChinaSouth China University of Technology; ChinaSouth China University of Technology; ChinaSouth China University of Technology; ChinaThe influences of stock consistency on the kappa number, residual alkali of pulp, flow direction of lignin, chemical oxygen demand, oxidation with dichromate (CODCr), and five-day biochemical oxygen demand (BOD5) in effluents were investigated in a washing process. Compared with 15% stock consistency, 35% stock consistency could lead to a decrease of at least 25% in the consumption of washing water while cutting 75.27% and 46.29% of CODCr and BOD5 in washing effluents, respectively. Moreover, the residual lignin in effluents were reduced greatly from 39.35 g·t-1 to 12.76 g·t-1, which will be beneficial to treatment of washing and bleaching effluent. All the results showed that a higher stock consistency in the washing process could decrease the consumption of washing water, the generation of pollution, and the toxicity in bleaching effluent.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_2214_Chen_Stock_Consistency_Pollution_LoadStock consistencyWashing processLigninBleaching processPollution load
spellingShingle Tiantian Chen
Youming Li
Lirong Lei
Mingzhu Hong
Qihui Sun
Yi Hou
The Influence of Stock Consistency on the Pollution Load in Washing Process
BioResources
Stock consistency
Washing process
Lignin
Bleaching process
Pollution load
title The Influence of Stock Consistency on the Pollution Load in Washing Process
title_full The Influence of Stock Consistency on the Pollution Load in Washing Process
title_fullStr The Influence of Stock Consistency on the Pollution Load in Washing Process
title_full_unstemmed The Influence of Stock Consistency on the Pollution Load in Washing Process
title_short The Influence of Stock Consistency on the Pollution Load in Washing Process
title_sort influence of stock consistency on the pollution load in washing process
topic Stock consistency
Washing process
Lignin
Bleaching process
Pollution load
url http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_11_1_2214_Chen_Stock_Consistency_Pollution_Load
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