Environmental auditing in India: A case study from the wood pulp industry

2008 ◽  
Vol 17 (3) ◽  
pp. 55-65 ◽  
Author(s):  
N. S. Raman ◽  
Mamta Makode ◽  
Sukumar Devotta
Keyword(s):  
Wood Pulp ◽  
Environmental Auditing ◽  
Pulp Industry

Eucalyptus bark: A new source of fiber from the wood pulp industry for feeding to beef feedlot cattle

2020 ◽  
Vol 36 (5) ◽  
pp. 592-599
Author(s):  
Juan Clariget ◽  
Alejandro La Manna ◽  
Santiago Luzardo ◽  
Eduardo Perez ◽  
Enrique Fernández ◽  
...  
Keyword(s):  
Wood Pulp ◽  
Feedlot Cattle ◽  
Pulp Industry ◽  
Eucalyptus Bark

In Situ Avoidance Response Of Adult Atlantic Salmon To Waste From The Wood Pulp Industry

2005 ◽  
Vol 165 (1-4) ◽  
pp. 187-194 ◽  
Author(s):  
Eva B. Thorstad ◽  
Torbjørn Forseth ◽  
Ingar Aasestad ◽  
Finn ØKland ◽  
Bjørn Ove Johnsen
Keyword(s):  
Atlantic Salmon ◽  
Avoidance Response ◽  
Wood Pulp ◽  
Pulp Industry

scholarly journals Maintenance Prediction through Sensing Using Hidden Markov Models—A Case Study

2021 ◽  
Vol 11 (16) ◽  
pp. 7685
Author(s):  
Alexandre Martins ◽  
Inácio Fonseca ◽  
José Torres Farinha ◽  
João Reis ◽  
António J. Marques Cardoso
Keyword(s):  
Hidden Markov Models ◽  
Markov Models ◽  
Hidden Markov ◽  
Production Costs ◽  
Proper Function ◽  
Health State ◽  
Production Flow ◽  
Pulp Industry ◽  
Prediction Approach

The availability maximization is a goal for any organization because the equipment downtime implies high non-production costs and, additionally, the abnormal stopping and restarting usually imply loss of product’s quality. In this way, a method for predicting the equipment’s health state is vital to maintain the production flow as well as to plan maintenance intervention strategies. This paper presents a maintenance prediction approach based on sensing data managed by Hidden Markov Models (HMM). To do so, a diagnosis of drying presses in a pulp industry is used as case study, which is done based on data collected every minute for three years and ten months. This paper presents an approach to manage a multivariate analysis, in this case merging the values of sensors, and optimizing the observable states to insert into a HMM model, which permits to identify three hidden states that characterize the equipment’s health state: “Proper Function”, “Alert state”, and “Equipment Failure”. The research described in this paper demonstrates how an equipment health diagnosis can be made using the HMM, through the collection of observations from various sensors, without information of machine failures occurrences. The approach developed demonstrated to be robust, even the complexity of the system, having the potential to be generalized to any other type of equipment.

FOREST RESOURCES AND THE WOOD PULP INDUSTRY IN AUSTRALIA

1964 ◽  
Vol 28 (1) ◽  
pp. 51-57
Author(s):  
A. J. Leslie
Keyword(s):  
Wood Pulp ◽  
Forest Resources ◽  
Pulp Industry

scholarly journals Modern technologies in the pulp industry

2018 ◽  
Author(s):  
Е.Д. Софронова ◽  
В.А. Липин
Keyword(s):  
Textile Industry ◽  
Single Point ◽  
Black Liquor ◽  
Wood Pulp ◽  
Raw Material ◽  
Cellulose Esters ◽  
Pulp Industry ◽  
Wood Processing ◽  
Polymer Industry ◽  
Modern Technologies

Целлюлоза, являясь природным полимером, имеет огромный потенциал использования в полимерной промышленности. Главным видом сырья для получения сложных эфиров целлюлозы является хлопок благодаря своему высокому содержанию «чистой» целлюлозы. Также позволяют достигать ее высокого качества современные технологии химической переработки древесной целлюлозы. Развитие целлюлозной промышленности идет по пути создания биокомплексов по переработке древесины, где происходит максимально полное использование древесного сырья с целью получения различных видов продукции при низкой экологической нагрузке на окружающую среду. Экстрагирование из образующегося черного щелока различных компонентов в виде глюкозы, гемицеллюлоз, экстрактивных веществ и лигнина позволяет при дальнейшей переработке использовать в медицине, в виде биотоплива, текстильной промышленности для придания определённых качеств и в других областях. Технология газификации черного щелока позволяет получить биотопливо в виде метана или диметилового эфира. Двухступенчатая кислородно-щелочная отбелка позволяет достигнуть более «мягких» условий для извлечения нецеллюлозных компонентов, лигнина и экстрактивных веществ. Экологичность производства является еще одним направлением активного развития технологии переработки древесины. Сбор и сжигание неконденсируемых газов, создание одной точки сброса очищенных газов, применение нетоксичных отбельных реагентов позволяет снизить нагрузку на окружающую среду. Технология газификации, которая обеспечивает экологически чистое производство биогаза для нужд завода, позволяет прекратить использование ископаемых видов топлива, а также позволяет получать и жидкие виды топлива, например, бензин. Современные реалии развития полимерной отрасли создают отличную конкурентную среду для раскрытия потенциала древесной целлюлозы. Возможны также варианты коренной модернизации целлюлозного производства на основе энергосберегающей и экологически безопасной технологии. Cellulose – as a natural polymer, has a huge potential for use in the polymer industry. The main type of raw material for the production of cellulose esters is cotton due to its high content of «pure» cellulose. Also, modern technologies of chemical processing of wood pulp can be achieved to its high quality. The development of the pulp industry follows the path of creating biocomplexes for wood processing, where the maximum use of wood raw materials takes place in order to obtain various types of products with low environmental load on the environment. Extraction of various components in the form of glucose, hemicelluloses, extractives and lignin from the formed black liquor allows to use in the medicine, in the form of biofuel, the textile industry for imparting certain qualities in other areas. The technology of gasification of black liquor allows to obtain biofuel in the form of methane or dimethyl ether. Two- stage oxygen-alkaline bleaching allows to achieve more «soft» conditions for extraction of non-cellulose components, lignin and extractives. Environmental friendliness of production is another area of active development of wood processing technology. The collection and combustion of non-condensable gases, the creation of a single point for the discharge of purified gases, the use of non-toxic bleaching agents, can reduce the burden on the environment. Gasification technology that provides environmentally friendly production of biogas for the needs of the plant, allows to stop the use of fossil fuels, and also allows to receive also liquid fuels, for example, gasoline. The current realities of the development of the polymer industry create an excellent competitive environment for revealing the potential of wood pulp. Variants of radical modernization of cellulose production on the basis of energy-saving and environmentally safe technology are also possible.

scholarly journals Environmental Auditing of a Packaging System for Redesign: A Case Study Exploration

2014 ◽  
pp. 267-273 ◽  
Author(s):  
J. Matthews ◽  
C. Parr ◽  
O. Araoye ◽  
M. McManus
Keyword(s):  
Packaging System ◽  
Environmental Auditing

Optimal atmospheric emission control in the wood pulp industry

1972 ◽  
Vol 6 (2) ◽  
pp. 93-102
Author(s):  
J.P. Heaney ◽  
L. Doughty
Keyword(s):  
Emission Control ◽  
Wood Pulp ◽  
Atmospheric Emission ◽  
Pulp Industry

ENVIRONMENTAL AUDITING: Arthropod Monitoring for Fine-Scale Habitat Analysis: A Case Study of the El Segundo Sand Dunes

2000 ◽  
Vol 25 (4) ◽  
pp. 445-452 ◽  
Author(s):  
Rudi Mattoni ◽  
Travis Longcore ◽  
Vojtech Novotny
Keyword(s):  
Sand Dunes ◽  
Fine Scale ◽  
Environmental Auditing ◽  
Habitat Analysis
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