ALPHACELLULOSE PREPARATION FROM PULP MILLS WASTEWOOD WITH ENVIRONMENTAL COMPATIBLE PROCESSES

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

NEDJATIE BARZOKI H.; MIRSHOKRAEI S.A.; MAHDAVI FEYZABADI S.; LOHRASEBI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Year:2006 | Volume:18 | Issue:4 (69 IN NATURAL RESOURCES) Page(s): 93-98

Download Full-Text

View:

340

Download:

Cites:

Information Journal Paper

Title

ALPHACELLULOSE PREPARATION FROM PULP MILLS WASTEWOOD WITH ENVIRONMENTAL COMPATIBLE PROCESSES

Author(s)

NEDJATIE BARZOKI H. | MIRSHOKRAEI S.A. | MAHDAVI FEYZABADI S. | LOHRASEBI A. | Issue Writer Certificate

Keywords

WOODWASTES OF PULP MILLS

SODA/AQ PROCESS

ENVIRONMENTALLY FRIENDLY METHODS

XONE

HYDROGEN PEROXIDE

ALPHACELLULOSE

Abstract

Research on utilization of wastewood in our country is urgently required due to low per capita forest area. Pulp mills generally produce a large volume of wastewood. In this investigation, wastewood from under screen preparation line of the Iran Wood and Paper Industries (CHOOKA) was used. The investigation was conducted using environmentally friendly processes, both in cooking and in bleaching. Hence, instead of prehydrolyzed Kraft pulping, prehydrolyzed SODA/AQ PROCESS was used. After several preliminary cooks, three final cooking conditions were chosen, labeled as Al (Active Alkality: AA 26%, L/W 9), A2 (AA 28%, L/W 10) and A3 (AA 26%, L/W 10). The fixed variables were prehydrolysis and cooking temperature and times (170 QC, 90 and 150 min. respectively), L/W for prehyprolysis 7.5 and Anthroquinone (AQ) concentration 0.1%. Prepared pulps were deliberated and washed with warm water. These treatments were replicated at least three times and their effects on total yield, screened yield and Kappa No. were statistically analyzed. As a result, A3 was chosen as the optimum treatment. To separate uncooked barkchips, pulps screened with 16 mesh screen, were screened again with 50 mesh screen. In order to the process to be more environmentally friendly, bleaching was performed in 2 sequences with delignification agent, Oxone (X), followed by alkali extraction (E) and finally by an H2O2 sequence (P). The Oxone concentration was 4% and that of H2O2 was 6.5% (based on pulp O.D. weight). Oxone and H2O2 sequence temperature was 70°C; and for extracting, it was 60°C. This is the first time that an Oxone sequence has been used in Iran. The resulting XEXEP-bleached pulp contained 74.6% ALPHACELLULOSE and 0.64% ash. This ALPHACELLULOSE can be mixed with high purity ALPHACELLULOSE to achieve both price reduction and quality improvement.

Cites

No record.

References

No record.

Cite

APA: Copy

NEDJATIE BARZOKI, H., MIRSHOKRAEI, S.A., MAHDAVI FEYZABADI, S., & LOHRASEBI, A.. (2006). ALPHACELLULOSE PREPARATION FROM PULP MILLS WASTEWOOD WITH ENVIRONMENTAL COMPATIBLE PROCESSES. PAJOUHESH-VA-SAZANDEGI, 18(4 (69 IN NATURAL RESOURCES)), 93-98. SID. https://sid.ir/paper/529782/en

Vancouver: Copy

NEDJATIE BARZOKI H., MIRSHOKRAEI S.A., MAHDAVI FEYZABADI S., LOHRASEBI A.. ALPHACELLULOSE PREPARATION FROM PULP MILLS WASTEWOOD WITH ENVIRONMENTAL COMPATIBLE PROCESSES. PAJOUHESH-VA-SAZANDEGI[Internet]. 2006;18(4 (69 IN NATURAL RESOURCES)):93-98. Available from: https://sid.ir/paper/529782/en

IEEE: Copy

H. NEDJATIE BARZOKI, S.A. MIRSHOKRAEI, S. MAHDAVI FEYZABADI, and A. LOHRASEBI, “ALPHACELLULOSE PREPARATION FROM PULP MILLS WASTEWOOD WITH ENVIRONMENTAL COMPATIBLE PROCESSES,” PAJOUHESH-VA-SAZANDEGI, vol. 18, no. 4 (69 IN NATURAL RESOURCES), pp. 93–98, 2006, [Online]. Available: https://sid.ir/paper/529782/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops