Odour Issues in paper industries
One such key process industry manufacturing one of the most useful and valuable commodities in the form of paper is pulp and paper industry, the per capita consumption of which is increasing exponentially. The high degree of obnoxiousness associated with the gaseous emissions from these industries is due to the presence of reduced sulfur compounds (RSCs) viz., dimethyl sulphide [(CH3)2S], dimethyl disulphide [(CH3)2S2], methyl mercaptan [(CH3SH)] and hydrogen sulphide [(H2S)]. All the above gasses have a very low odour threshold and can cause serious problems if exposed above OSHA TWA limits . Further, all the four compounds have very low boiling points with the exception of dimethyl disulphide. Due to very low boiling point they are highly volatile this in turn makes them difficult to control. Sophisticated analytical instruments such as gas chromatography needs to be coupled with a cryogenic system for preconcentration of gaseous compounds having boiling point less than 0 °C, for example hydrogen sulphide (boiling point −60 °C). This further limits the use of such analytical instruments at industrial level. Moreover, while using such analytical instruments the odour perceived is not depicted. Till date, the electronic nose developed for measurement of gaseous emissions generated from various industrial sites has found its application limited to the monitoring of VOCs and for detection of singular compounds such as H2S, NH3, etc . Therefore, keeping in view the global importance of pulp and paper industries, the inherent environmental pollution problem associated and considering the limitation offered by present analytical techniques it is necessary to investigate and develop a measurement system for rapid qualitative and quantitative analyses of such emissions as well as the odor intensity associated. Eventually this will lead to better control and regulation of these unwanted emissions.
IOMS in kraft paper mills
-Completed
The paper mills have numerous sources releasing odours significantly impacting the environment and the worker health. These odors in the manufacturing process are also translated in the end product- the Paper; significantly reducing its acceptability especially in the international markets and thereby resulting in reduced revenues to the paper mill. Our unique electronic nose #IOMS can efficiently find the exact source emitting odour, help in adopting an efficient odor mitigation strategy, monitor the strategy outcome, and enhance the overall product quality. IOMS helps in optimizing the entire process thereby providing a healthy environment to the mill workers and the surrounding inhabitants. #IOMS helps in achieving your sustainability goals and ensures mutually beneficial co-existence of industry and environment
Kraft paper is commonly used packaging material for food, chemicals, and other consumer goods due to its durability and eco-friendly nature. However, the Kraft paper often has an obnoxious odour which makes it unacceptable for certain applications, especially food packaging. The odorants in the kraft paper may originate from different sources. Most of the Kraft paper mills use unbleached waste paper as the raw material with closed-water circuits that increases the BOD, COD and bacterial load of the process water, which in turn increases the odor levels of the water and hence the produced Kraft paper
The study was conducted in one of the major kraft mills located in the outskirts of Hyderabad. To address the problem an optimized odour monitoring and management techniques needs to be developed.In this study, in order to reduce the odour intensity of the water and paper, firstly the samples were tested using IOMS The IOMS provided the results in ASTM E544-99 odour intensity referencing scale . Based on the intensity levels appropriate treatment techniques were developed. During the treatment period of 2 months, a significant reduction in microbial load, odor intensity and other parameters of the p