PAPER making! g! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® Volume 12, Number 1, 2026
The accuracy of sample classification depending on the extractive added was 92.4 % based on NIR. The accuracy of classification of six samples containing different concentrations of the model compound using NIR data was 89.5 %. Partial least squares calibration model applied to pretreated NIR spectra yielded R 2 and root standard error of 0.78 and 0.35, respectively This means that the method could be used for non-selective quick estimation of extractive content with potential application to forest industry in process and fiber quality control in pulp and paper. TISSUE “Analysis of B2B customers’ perceptions regarding the quality of tissue paper produced from recycled pulp in the Algerian paper industry sector”, Achwaq Bounefla, Journal of Recycling Economy & Sustainability Policy , Vol.4(2), 2025. This article seeks to investigate and analyze the perceptions of B2B customers regarding the quality of tissue paper rolls manufactured from recycled pulp, compared to those produced from virgin pulp, across four companies within the Algerian paper industry sector (Sarl El- Wafa Faile, Sarl Africaine Paper Mills, Faderco Group, and EPE Tonic Industries). The study employs a qualitative methodology, utilizing structured interviews organized into a grid format, as well as semi-structured interviews guided by a structured interview protocol, while employing NVivo version 15 software as an analysis tool. The findings reveal that companies engaged in transforming tissue paper rolls into finished products generally hold a negative perception of rolls made from recycled pulp. Furthermore, these companies demonstrate a preference for rolls produced from virgin pulp, attributing this preference to the perceived superior quality of virgin pulp products and the reduction of challenges encountered during the transformation process. WASTE TREATMENT “Preparation of polyaniline-ZnO/PES mixed matrix membrane and its application in alkali recovery from pulping and papermaking black liquor”, Liu Yingyao, Xie Wenxin, Cao Duanchao, Chen Gang, Wang Qinwen , Environmental Progress & Sustainable Energy , Vol.45(1), Jan./Feb. 2026, e70194. Pulping and papermaking black liquor (BL), predominantly produced during the cooking stage of the kraft or soda pulping processes, contains large amounts of organic and inorganic pollutants including lignin, hemicellulose, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S). Direct discharge of this BL into the environment can cause severe ecological harm. Traditional alkali recovery processes used for pulping BL not only require significant financial investment but also fail to achieve high- value utilization of resources such as lignin. In the present study, PANI-ZnO particles were first successfully synthesized using the sol–gel method. These particles were then incorporated as fillers to fabricate PANI-ZnO/PES mixed matrix membranes using the non- solvent-induced phase separation (NIPS) technique. In the filtration test with pulping BL, the membrane containing 0.4% PANI-ZnO obtained the highest flux (1.17 L·m −2 ·h −1 ) and alkali recovery rate (85.71%), while the membrane containing 0.2% PANI-ZnO showed the highest sensitivity to lignin (58.78%) and hemicellulose (28.81%). Although MMM has been used in water treatment, it is still a challenge to use it exclusively in the harsh pulping black liquor treatment environment. In this study, MMM containing PANI-ZnO was designed specifically, and the synergistic effect was used to tolerate the high alkalinity and high organic load of black liquor. At the same time, lignin macromolecules were efficiently intercepted, and the extremely high alkali recovery rate was given priority, which was directly aimed at the core economic demand of black liquor resource recovery, which was significantly different from the traditional research path that only pursued interception rate or flux.
Technical Abstracts
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