Removal of formaldehyde present in Volatile Organic Compounds (VOC) of pulp and paper industry
Muhammad Shahbaz, Malik Zeeshan, Kaleem azher, Muhammad Suleman Tahir, Abdul Hannan
Last modified: 2014-03-18
Abstract
Pakistan is emerging country and requirement of paper increasing day by day. About 37 paper mills are working in country they are producing about 400000 ton per year paper and 90000-110000 ton per year high quality pulp. In this paper we have gone through the real problem of a plant. This plant is producing bleached pulp from wood chips up-to 150 Ton per day by Kraft process, through digestion process volatile organic compounds (VOC) in the form of exhaust gas obtained. Unfortunately some of compound did not meet the environmental standards and increasing atmospheric pollution. In VOC Formaldehyde is most important and present in high quantity. It about 16 % weight of VOC of exhaust gases. 3870 .40 mg/m3 amount of formaldehyde reduced to 2.5 mg/m3 to meet OSHA standards. Formaldehyde has high solubility in water so it is used in absorption technique to capture high amount of formaldehyde present in VOC before discharging in atmosphere
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