Scientists from the Indian Institute of Pulp and Paper studied the effect of surfactants on pulping and pollution reduction loads, using DCA-100 (AQ+ non-ionic surfactants), IGSURF-1206 (mixed non-ionics) Surfactant) or RDCA-1000 (non-ionic surfactant), using the best alkali amount (calculated as Na2O), and cooking bamboo wood chips (including 55% bamboo and 45% hardwood chips) under normal cooking conditions ).
The results show that the application of DCA-100 or IGSURF-1206 surfactant in bamboo wood chips can reduce the content of methylene chloride extracts, kappa number, and coarse slag in the pulp compared with the non-surfactant. Bleaching whiteness. The use of IGSURF-1206 surfactant was effective for improving the yield and physical strength of unbleached and bleached pulps, followed by DCA-100, while RDCA-1000 had no significant effect. For unbleached pulps obtained with IGSURF-1206 or DCA-100 surfactants, C-Ep-HD four-stage bleaching significantly reduces chemical oxygen demand, suspended solids, dissolved solids, and bleached wastewater compared to the reference bleached pulp. Organic chloride content, and the use of RDCA-1000 did not reduce the pollution load.