Evaluation of cementitious mortar from carbide recycling paper mill sludges.

Date

4-2009

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

Menandro N. Acda

Restrictions

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

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Abstract

Mortar blocks formed from varying proportions of papermill, carbide and paint sludge with Ordinary Portland cement as binding agent were formed and cured under 100% Relative Humidity for 7 and 14 days. Five treatments having varying percentage compositions of carbide sludge, paper mill sludge, paint sludge and ordinary Portland cement were made in the study. For each treatment, the amount of paper sludge was increased by from 0 to 5, 20 and 40% by weight of total mixture. The amount of paint sludge was kept at 5% for leaching test. The remainder of the mixture was divided equally to carbide sludge and ordinary Portland cement. Calcium chloride was added as an accelerator for faster curing of the samples. Physical tests to determine density, moisture content and particle size distribution were done for the different sludge. The Unconfined Compressive Strength Test for the different treatment was employed being the standard test method for mortars: for dimensional stability, thickness swelling was measured to determine for significant change in the dimension of the formed blocks. Toxicity Characterization and Leaching Procedure was done to analyze the capability of the formed mortar to encapsulate heavy metal,for this experiment Nickel. Results revealed that all treatments passed the minimum requirement of 345kPa in terms of strength for landfilling purposes, treatment 1 being the highest with the lowest proportion of sludge material. Statistically, no significant difference in terms of thickness change among the treatments was observed, no significant difference in terms of thickness change among the treatments was observed for this experiment. Relatively high moisture content was exhibited by treatment 5 with the highest amount of papermill sludge. TCLP for for treatment 3 shows that formed blocks can encapsulate heavy metals, particularly Nickel.

Language

English

LC Subject

Sewage sludge, Pulp and paper industry--Philippines--Cost benefit analysis

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

LG 993 2009 E62 A76

Document Type

Thesis

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