Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Ahmad reza Saraeyan"'
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 33, Iss 3, Pp 323-336 (2018)
During the paper manufacturing process, especially when mechanical pulp or recycled pulp used, a large amount of soluble and colloidal substances (DCS) are comprised and dispersed or dissolved in the process water. Accumulation of DCS during the pape
Externí odkaz:
https://doaj.org/article/2a60775f584c410eb5b9178d0b9f725b
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 31, Iss 2, Pp 204-210 (2016)
Increased environmental concerns over the use of certain synthtic packaging in combination with consumer demands led to increased interest in alternative packaging materials research. Paper is biodegradable and widely used in packaging applications t
Externí odkaz:
https://doaj.org/article/dffea01a518c45dca1dd426e0e398e3b
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 29, Iss 3, Pp 411-421 (2014)
This research was conducted to investigate the bleaching of combined old newspapers (ONP) and old magazines (OMG) deinked pulp using sodium dithionite. The pulp was bleached using 0.5, 0.75, and 1% sodium dithionite and different times of 30, 60 and
Externí odkaz:
https://doaj.org/article/b517f24471564025af7a5f3de814ee60
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 27, Iss 1, Pp 143-155 (2012)
Preparation and pre-treatment of raw material influences the pulp production time and color elimination. Pulp consistency during the treatment also influences the color reaction. In the preparation of the APMP pulp, bagasse was pretreated by either b
Externí odkaz:
https://doaj.org/article/37a744b99291451bb3409168d15b9326
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 26, Iss 2, Pp 339-351 (2011)
This work investigated effect of height and cultivar on morphological properties of bast and core fiber of tobacco stalk (Nicotiana tabacum). Also, in this research cultivar effect on chemical properties of tobacco stalk were investigated. Selected c
Externí odkaz:
https://doaj.org/article/8e997887072f45dfa2115e5f78d6540f
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 25, Iss 2, Pp 223-233 (2010)
In this study, Deinking of old newspaper was investigated by chemical and enzymatic methods. Chemical treatment was done using chemicals at different times of 10, 20 and 30 minutes, consistency of 10%, temperature of 50±1!C along with washing, flota
Externí odkaz:
https://doaj.org/article/4ee7d51391154e81bc94a3c390456b98
Autor:
Somayeh Ghasemi, Ahmad reza Saraeyan
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 25, Iss 1, Pp 138-146 (2010)
Comparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp. Yield of heart wood and sap wood soda pu
Externí odkaz:
https://doaj.org/article/8130a00f055f46c08cdd8032998d443b
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 26, Iss 1, Pp 98-116 (2010)
This study was conducted to investigate the properties of cotton stalks APMP pulp. APMP prepared from chipped cotton stalks. the pulps were prepared separately from debarked and bark containing stalks using three two-stage treatments.Sodium hydroxide
Externí odkaz:
https://doaj.org/article/b181e3719dc24bae9a0dd34b86d91ab8
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 25, Iss 1, Pp 32-47 (2010)
In this study, mechanical and optical properties of CMP, one stage APMP and two stage APMP pulps ( from Tajan wheat straw Golestan province ) were investigated. wheat straw collected at research center of Agriculture and Natural resources of Golestan
Externí odkaz:
https://doaj.org/article/148c8f2d2de742e0bea31ec6419b7906
Publikováno v:
تحقیقات علوم چوب و کاغذ ایران, Vol 24, Iss 2, Pp 295-306 (2009)
The effect of using commercial xylanase enzyme in prebleaching of bagasse kraft pulp was investigated. Xylanase enzyme from Trichoderma viride was added to pulp at various doses of 10, 25 and 50 IU/g pulp for reaction time 2h and then the enzyme trea
Externí odkaz:
https://doaj.org/article/95c210d6ac564a8e8a94ffb9e8286d2c