Organosolv pulping of kawayan tinik (Bambusa blumeana J.A. & J.H. Schultes) using glycerol as cooking liquor

Date

12-2014

Degree

Bachelor of Science in Chemical Engineering

Major Course

Major in Pulp and Paper Technology

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Ramon A. Razal

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

In this study, kawayan tinik was pulped with the aid of glycerol to lessen the negative impact of pulping and papermaking on the environment. Two levels of both glycerol concentration (20 and 80%) and cooking time (270 and 300 min) were used to determine their effects on the responses. The results obtained using glycerol pulping were compared to the results obtained using soda pulping. Higher pulp yield and H-factor were obtained from glycerol pulping. Though the organosolv pulps were darker due to the reaction of glycerol with heat, kappa numbers showed that there was less residual lignin in the 80%-glycerol-cooked pulps. Two-stage bleaching was done to brighten the pulp samples but the soda pulp still resulted in the highest ISO brightness of 40.63%. Bauer-McNett classifier was also used to determine the fiber size composition of the pulps and showed that there was less fiber cutting when soda pulping was employed. The Canadian Standard Freeness (CSF) test showed that glycerol pulps had lower drainability than soda pulp. Handsheets were also made and tested to evaluate if packaging paper could be produced from glycerol pulp. The properties tested were grammage, thickness, tear resistance, and tensile and burst strengths. The strength properties of glycerol pulps were relatively higher than those of soda pulp. Bleaching and increased glycerol concentration showed significant effects on the strength properties, and the bleached glycerol pulps were assessed suitable for use as packaging paper.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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