Deployment of Trichoderma harzianum WL1 laccase in pulp bleaching and paper industry effluent treatment

The ability of Trichoderma harzianum WL1 crude laccase and the fungal system for the biobleaching of wastepaper pulp and treatment of paper industry effluent was investigated. Three different modes of treatment, enzyme, enzyme-alkali and enzyme-EDED were employed for the bleaching of wastepaper pulp. The process parameters such as treatment period, pulp consistency, temperature and enzyme charge had a great influence on the quality of paper pulp. The paper industry effluent was subjected to eight different treatments via. aerobic, anaerobic, fungal and combination of these treatments. Fungal followed by anaerobic treatment was found to be effective in paper industry effluent treatment.