List of Articles Denitrification Open Access Article Abstract Page Full-Text 1 - Two-Step Ammonia Nitrogen Removal from Kermanshah Petrochemical Effluent Using Native Bacteria Immobilized on Granular Activated Carbon Mehdi Gowdini hatam godini farhad salimi 10.22034/jest.2018.9426 Open Access Article Abstract Page Full-Text 2 - Studty of physico-chemical parameters affecting SND process on nitrogenous compounds removal Seyed Mohammad Ali Masoudi Javad Sargolzaei Fatemeh Sabeti Dehkordi Aboulfazl Darroudi 10.22034/jest.2020.16482.2510 Open Access Article Abstract Page Full-Text 3 - Effects of tillage methods on nitrous oxide (N2O) and ammonia (NH3) emission in cotton-wheat rotation in Darab area Aboalghasem Gheisari Mohammad Reza Asgharipour • Seyed Mohsen Mousavi-Nik Seyed Ahmad Ghanbari