•  Control of filamentous organism in aerobic biological treatment process:

 The effect of different parameters like pH, temperature, DO, chlorophenolic compounds, HRT, organic load, F/M ratio was  studied  and optimized to control the growth of filamentous organisms.

•  Handling of secondary sludge of pulp and paper industry:

 The bio-sludge was dewatered up to 17-20% dryness using centrifuge as dewatering equipment. Vermicompositing of  biosludge was also done after mixing it with fibrous material like saw dust, primary sludge etc.

•  Cost effective physio-chemical treatment of individual/ combined effluent streams for reduction in colour, COD, BOD  and AOX:

 Use of coagulants and floccluants on sectional effluent streams was found cost effective for reducing various pollutants  including  colour.

•  Decolourization of phosphoric acid by ozonation:

 The decolourization of phosphoric acid was done in cost effective manner with the use of ozone.

•  Process development for two stage causticization for removal of silica from green liquor:
•  Different parameters like reaction temperature, time, lime purity, split addition of lime, quantity of lime were optimized for getting  the highest desilication of green liquor.

•  Process development for removal of silica from black liquor:
•  Different parameters like temperature, pH, silica level concentration of CO₂ etc. were optimized for maximum silica removal  with  minimum lignin precipitation through carbonation technique.

•  Environment assessment of paper industries:

 The environmental research programme helped the industry in technology selection for improving its performance in  environmental management.

•  Bio-chemical abatement of pollution load in wastewater to meet the future stringent norms for agro based pulp and paper mills