โรจน์วิรุฬห์ ธ. Nitrate Removal Using Photocatalytic Reduction Process with Ag-TiO2 Catalyst. sej [internet]. 2019 Jul. 26 [cited 2025 Dec. 7];13(3):138-46. available from: https://ph02.tci-thaijo.org/index.php/sej/article/view/135954