INFLUENCE OF THE COLLOID CHEMICAL CHARACTERS ON DEINKING EFFICIENCY IN MOW DEINKING PROCESS
The paper mainly studied the relation between the colloid chemical characters of deinking dispersed system and deinking efficiency in MOW deinking process. The main colloid chemical characteristic parameters of deinking dispersed system, such as zeta potential, contact angle, absorbance and transmissivity, were modified with adding condign dosage of inorganic salt compounds. The research results showed that some inorganic salt compounds as coagulant to optimize the deinking dispersed system of MOW were helpful. The experiment also indicated that, there was a good functional correlation between the quality indexes of the deinked pulp and the main colloid chemical characteristic parameters. When the zeta potential, transmissivity increased and contact angle, absorbance of deinking dispersed system decreased, the deinked pulp quality would become better. Under the following deinking conditions: dosage of deinking additive 0.5％, NaOH 2.0％, Na2SiO3 2.0％, EDTA 1.5％, H2O2 1.0％, the temperature of pretreatment was 80 and the time ℃ was 50 min, added condign dosage of CaCl2, MgCl2 and Al2(SO4)3 into the deinking dispersed system, the brightness of the deinked pulp could be increased correspondingly and the residual ink particle content was reduced correspondingly, the sequence of influence on the deinking result was MgCl2>Al2(SO4)3>CaCl2.
colloid chemical character deinking efficiency inorganic salt compound brightness residual ink particle
Zhang Shijie He Beihai Han Qing
South China University of Technology, Guangzhou,510640, China Dalian Polytechnic University, Dalian, South China University of Technology, Guangzhou,510640, China Shaanxi University of Science & Technology, Xi’an,710021, China
国际会议
广州
英文
814-817
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）