Tetrabromobisphenol A (TBBPA) generation and removal paths analysis in printed circuit board (PCB) industrial wastewater: Lab-scale investigations
نویسندگان
چکیده
With the rapid development of printed circuit board (PCB) industry, problem release tetrabromobisphenol A (TBBPA) during PCB manufacturing processes was recognized and harmful to receiving water body. In this study, TBBPA generation paths, fates in industrial wastewater were analyzed. Gas chromatograph-mass spectrometer (GC-MS) scanning results showed that raw materials including solder mask ink, character ink dry film mainly contained TBBPA. The fabrication procedures, development, etching, stripping inner layer process, pattern plating, tin-plating outer forming surface treatment process would introduce into wastewater. Flocculation activated sludge (ASP) commonly used for selected assess their removal capability wastewater, both which could remove more than 80% Low pH below 7, increased PAC PAM dosages, proper dosing slow-stirring stage enhance flocculation-sedimentation process. ASP removes by path adsorption. High concentration, low pH, medium-temperature limited competitive adsorbates (NH4+, Cu2+) beneficial ASP.
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ژورنال
عنوان ژورنال: Environmental Engineering Research
سال: 2022
ISSN: ['1226-1025', '2005-968X']
DOI: https://doi.org/10.4491/eer.2022.190