Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide

The objective of this study was the evaluation of optical, mechanical properties of chemi-mechanical pulp which were bleached by one and two stage bleaching sequence of hydrogen peroxide and sodium hypochlorite. Also the environmental effects of effluents from bleached paper liquor were studied. For...

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Autores principales:	قاسم اسدپور اتوئی, fatemeh rajabi, seyed majid zabizadeh
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2018
Materias:	Bleached Pulp chemi-mechanical pulp (CMP) Sodium Hypochlorite Optical properties MECHANICAL PROPERTIES Chemical Oxygen Demand Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/c93065dd57de416cb93c2a2de189171a
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spelling	oai:doaj.org-article:c93065dd57de416cb93c2a2de189171a2021-12-02T02:27:46ZEvaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide1735-09132383-112X10.22092/ijwpr.2018.120401.1458https://doaj.org/article/c93065dd57de416cb93c2a2de189171a2018-06-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_116174_a73a4452ec815f3f6c180bc65a220e0f.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe objective of this study was the evaluation of optical, mechanical properties of chemi-mechanical pulp which were bleached by one and two stage bleaching sequence of hydrogen peroxide and sodium hypochlorite. Also the environmental effects of effluents from bleached paper liquor were studied. For this purpose, unbleached CMP pulp mixed of hardwoods was prepared from Mazandaran Wood and Paper mill. Then, these pulps were bleached using P (hydrogen peroxide), H (Sodium Hypochlorite), PH (Hydrogen Peroxide and Sodium Hypochlorite) and HP (Sodium Hypochlorite and hydrogen peroxide) stages. 60 gr/m2 hand sheets were prepared and the optical, mechanical properties of hand sheets and also their effluent bleaching liquor characteristics were measured and analyzed based on TAPPI and APHA Standards. The results showed that when peroxide was applied at the last stage of bleaching, then the properties such as tear, tensile and brightness have increased and yellowness has decreased. Generally, the role of single sequence of bleaching by P and two sequence of bleaching with HP were more effective than single sequence of H or unbleached pulp. Based on results, the highest and lowest COD load is related to bleaching liquor of H and PH respectively. Moreover, bleaching liquor of hydrogen peroxide had the highest BOD load and the lowest amount of BOD is related to PH sequence of bleaching.قاسم اسدپور اتوئیfatemeh rajabiseyed majid zabizadehRegional Information Center for Science and Technology (RICeST)articleBleached Pulpchemi-mechanical pulp (CMP)Sodium HypochloriteOptical propertiesMECHANICAL PROPERTIESChemical Oxygen DemandForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 33, Iss 2, Pp 205-217 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	Bleached Pulp chemi-mechanical pulp (CMP) Sodium Hypochlorite Optical properties MECHANICAL PROPERTIES Chemical Oxygen Demand Forestry SD1-669.5
spellingShingle	Bleached Pulp chemi-mechanical pulp (CMP) Sodium Hypochlorite Optical properties MECHANICAL PROPERTIES Chemical Oxygen Demand Forestry SD1-669.5 قاسم اسدپور اتوئی fatemeh rajabi seyed majid zabizadeh Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
description	The objective of this study was the evaluation of optical, mechanical properties of chemi-mechanical pulp which were bleached by one and two stage bleaching sequence of hydrogen peroxide and sodium hypochlorite. Also the environmental effects of effluents from bleached paper liquor were studied. For this purpose, unbleached CMP pulp mixed of hardwoods was prepared from Mazandaran Wood and Paper mill. Then, these pulps were bleached using P (hydrogen peroxide), H (Sodium Hypochlorite), PH (Hydrogen Peroxide and Sodium Hypochlorite) and HP (Sodium Hypochlorite and hydrogen peroxide) stages. 60 gr/m2 hand sheets were prepared and the optical, mechanical properties of hand sheets and also their effluent bleaching liquor characteristics were measured and analyzed based on TAPPI and APHA Standards. The results showed that when peroxide was applied at the last stage of bleaching, then the properties such as tear, tensile and brightness have increased and yellowness has decreased. Generally, the role of single sequence of bleaching by P and two sequence of bleaching with HP were more effective than single sequence of H or unbleached pulp. Based on results, the highest and lowest COD load is related to bleaching liquor of H and PH respectively. Moreover, bleaching liquor of hydrogen peroxide had the highest BOD load and the lowest amount of BOD is related to PH sequence of bleaching.
format	article
author	قاسم اسدپور اتوئی fatemeh rajabi seyed majid zabizadeh
author_facet	قاسم اسدپور اتوئی fatemeh rajabi seyed majid zabizadeh
author_sort	قاسم اسدپور اتوئی
title	Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
title_short	Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
title_full	Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
title_fullStr	Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
title_full_unstemmed	Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide
title_sort	evaluating the properties of bleached chemi-mechanical pulp (cmp) with one and two-stage of sodium hypochlorite and hydrogen peroxide
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2018
url	https://doaj.org/article/c93065dd57de416cb93c2a2de189171a
work_keys_str_mv	AT qạsmạsdpwrạtwỷy evaluatingthepropertiesofbleachedchemimechanicalpulpcmpwithoneandtwostageofsodiumhypochloriteandhydrogenperoxide AT fatemehrajabi evaluatingthepropertiesofbleachedchemimechanicalpulpcmpwithoneandtwostageofsodiumhypochloriteandhydrogenperoxide AT seyedmajidzabizadeh evaluatingthepropertiesofbleachedchemimechanicalpulpcmpwithoneandtwostageofsodiumhypochloriteandhydrogenperoxide
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Evaluating the Properties of Bleached Chemi-Mechanical Pulp (CMP) with One and Two-stage of Sodium Hypochlorite and Hydrogen Peroxide

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