About the Department of Chemical Engineering About the Department of Chemical Engineering The central purpose of engineering is to pursue solutions to technological problems in order to satisfy the needs and desires of society. Chemical engineers are trained to solve the kinds of problems that are typically found in the "chemical process industries", which include the chemical manufacturing, plastics, water treatment, pulp and paper, petroleum refining, ceramics, and paint industries as well as substantial portions of the food processing, textile, nuclear energy, biochemical, biomedical and pharmaceutical industries. The technological problems and opportunities in these industries are often closely linked to social, economic and environmental concerns.
Posted in Articles by akileshsingh Paper physics has gone to peaks in terms of understanding the pulp and developing pulp or fiber properties analysis is a step in determining the fibers status in the process it is undergoing.
Image analysis methods are well known and adapted ways to determine accurate fiber properties in a short time. Bauer-McNett classification — a preferred method The Bauer-McNett classification is a much used method for characterising both chemical and mechanical pulps, although it is more suitable for the latter, because the fibre length distribution is usually broader than in chemical pulps and thus the fibres will be distributed more evenly in each fraction.
It has been shown LindholmKoran that these fractions serve well to predict most of the properties of a given mechanical pulp.
Hence it is a suitable method for the analysis of pulp fractionation. The Bauer-McNett apparatus are to classify pulp primarily according to fibre length, while other factors such as width and fibre flexibility have only minor effects.
The analogy between pressure screening and Bauer-McNett classification is obvious. The analysis as such has been shown to be repeatable at same labs, but its reproducibility between laboratories and tests has been found to be poor.
The poor reproducibility is attributable to dimensional and constructional anomalies in the apparatus, and the differences between the results of analyses performed with different apparatuses have been shown to be so great that attempts at developing Bauer-McNett analysis into a standard method have been abandoned.
Pulp properties are determined by the analysis includes: Many models are invented to make the fiber properties insights more in-depth. Over these years, not only there was an evolution of different types of fibers, lot advancements came in the models, methods, theories and technologies. Chemical and structural analysis of fiber and core tissues A standard approved in was with exact proportion by weight of ground fiber and shive, a model was developed using near infrared spectroscopy and a series of mixtures were determined.
This model is based on shive material, the presence of cuticularized epidermis, having a high level of wax and cuticle along with aromatics, may dictate another model, or modification, in further refinements of the method.
The future standards in the properties are some of those commonly required for typical fiber applications. While the standards for fiber strength and length are two others that require future action.A University-Industry Partnership for Innovation and Education The Pulp and Paper Centre is an inter-disciplinary, cross-faculty research centre with specialized laboratories and offices for graduate students, post doctoral fellows, research engineers and faculty who conduct research for the benefit of the current and future pulp and paper.
Partners and Centres. Affiliated hospitals, research centres and networks. McGill University Research Centre on Complex Traits: An Initiative to Cure Infectious and Chronic Inflammatory Diseases McGill University and Genome Québec Innovation Centre; Pulp and Paper Research Institute - Canada (PAPRICAN).
Read "Flocculation kinetics of precipitated calcium carbonate induced by electrosterically stabilized nanocrystalline cellulose, Colloids and Surfaces A: Physicochemical and Engineering Aspects" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Nobbs' sketch -- McGill Archives The Pulp and Paper Research Institute was built in by Percy Nobbs, Professor of Design at the School of Architecture at the time and architect of many other campus projects. Whereas before the only formal pulp and paper centres in Canada were at McGill University and Université du Quebec at Trois Rivieres, by the late s, four additional centres were operational at the University of New Brunswick, Ecole Polytechnique, University of Toronto, and McMaster University.
† Pulp and Paper Research Centre McGill University University Street Montreal, Quebec, H3A 2A7, Canada [email protected].
* Input Devices and Music Interaction Laboratory/Centre for Interdisciplinary Research in Music Media and Technology McGill University Sherbrooke Street West Montreal, Quebec H3A 1E3, Canada [email protected.