List of Articles Nitrification 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 - Comparison of Inhibitory Effects of Potassium Chloride, Ammonium Chloride and 3, 4-Dimethylpyrazole Phosphate on Nitrification mohammad kazem souri kamalsadat asilan Volker Roemheld moein naiji Open Access Article Abstract Page Full-Text 4 - استفاده از پودر کربن فعال در فن آوری لجن فعال جهت بررسی اثر تصفیه پذیری فاضلاب صنعتی پتروشیمی در مقیاس آزمایشگاهی جهت پالایندگی آب برگشتی محمد رضا فرشادی روحالله مختاران جواد احدیان Open Access Article Abstract Page Full-Text 5 - 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