Thi Hoang Oanh, Le, Nguyen Thi Hien, Nguyen Thi Ha, & Tran Thi Hong. " Adsorption of N and P in Piggery Wastewater by CaCl2 Impregnated Activated Carbons Produced from Coconut Pith." VNU Journal of Science: Earth and Environmental Sciences [Online], 42.2 (2026): n. pag. Web. 23 Aug. 2026