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Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora

In recent years, pulp and paper mill has faced environmental pressure and has been known as one of the major contributors to adverse effects on environment. Up till now, the environmental impact shows that significant results or pollutants are produced from the bleaching process. Large amount of lig...

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Main Author: Lye, Swee Chin
Format: Undergraduate Final Project Report
Published: 2020
Online Access:http://discol.umk.edu.my/id/eprint/4199/
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spelling my.umk.eprints.41992022-05-23T08:23:44Z http://discol.umk.edu.my/id/eprint/4199/ Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora Lye, Swee Chin In recent years, pulp and paper mill has faced environmental pressure and has been known as one of the major contributors to adverse effects on environment. Up till now, the environmental impact shows that significant results or pollutants are produced from the bleaching process. Large amount of lignin will be eliminated and discharged from the bleaching process which will lead to water pollution. Bleaching is the removal or alteration of coloured substances from chemical pulp to improve the whiteness and brightness of paper, without disturbing the physical and chemical properties of the pulps. By using sodium hypochlorite, it is expected that little or no lignin will be produced as effluents as hypochlorite aims to attack and alter the structure of lignin. This paper will investigate on low concentration of hypochlorite in pulp bleaching towards paper properties produced. Sesbania grandiflora was selected due to its potential and fast growing properties. Kraft pulp derived from Sesbania grandiflora was bleached with 2.5% sodium hypochlorite at 15% consistency for 0 minute, 20 minutes, 40 minutes and 60 minutes in 50°C water bath. The handsheets produced at 0 minute will serve as a control. The physical and mechanical properties of handsheets produced were evaluated followed TAPPI standard. In short, sodium hypochlorite is capable to improve the brightness of handsheets and increase the mechanical properties of handsheets to certain degree. However, temperature exceeds 60°C will bring adverse effect to the mechanical properties of handsheets produced. 2020 Undergraduate Final Project Report NonPeerReviewed Lye, Swee Chin (2020) Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora. Final Year Project thesis, Universiti Malaysia Kelantan. (Submitted)
institution Universiti Malaysia Kelantan
building Perpustakaan Universiti Malaysia Kelantan
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Kelantan
content_source UMK Institutional Repository
url_provider http://umkeprints.umk.edu.my/
description In recent years, pulp and paper mill has faced environmental pressure and has been known as one of the major contributors to adverse effects on environment. Up till now, the environmental impact shows that significant results or pollutants are produced from the bleaching process. Large amount of lignin will be eliminated and discharged from the bleaching process which will lead to water pollution. Bleaching is the removal or alteration of coloured substances from chemical pulp to improve the whiteness and brightness of paper, without disturbing the physical and chemical properties of the pulps. By using sodium hypochlorite, it is expected that little or no lignin will be produced as effluents as hypochlorite aims to attack and alter the structure of lignin. This paper will investigate on low concentration of hypochlorite in pulp bleaching towards paper properties produced. Sesbania grandiflora was selected due to its potential and fast growing properties. Kraft pulp derived from Sesbania grandiflora was bleached with 2.5% sodium hypochlorite at 15% consistency for 0 minute, 20 minutes, 40 minutes and 60 minutes in 50°C water bath. The handsheets produced at 0 minute will serve as a control. The physical and mechanical properties of handsheets produced were evaluated followed TAPPI standard. In short, sodium hypochlorite is capable to improve the brightness of handsheets and increase the mechanical properties of handsheets to certain degree. However, temperature exceeds 60°C will bring adverse effect to the mechanical properties of handsheets produced.
format Undergraduate Final Project Report
author Lye, Swee Chin
spellingShingle Lye, Swee Chin
Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
author_facet Lye, Swee Chin
author_sort Lye, Swee Chin
title Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
title_short Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
title_full Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
title_fullStr Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
title_full_unstemmed Efficiency of low concentration hypochlorite on characteristics of paper derived from Sesbania grandiflora
title_sort efficiency of low concentration hypochlorite on characteristics of paper derived from sesbania grandiflora
publishDate 2020
url http://discol.umk.edu.my/id/eprint/4199/
_version_ 1763303380433764352
score 13.211869

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