List of Articles Batik wastewater Open Access Article Abstract Page Full-Text 1 - Effectiveness of Sequential Pre-treatment and Application of High-porosity Hybrid Fly Ash Geopolymer/alginate Adsorbent for the Treatment of Batik Wastewater Siti Mazatul Azwa Saiyed Mohd Nurddin Suriati Sufian Zakaria Man Nurul Ekmi Rabat Nazwin Ahmad 10.22034/jchr.2021.682249