List of Articles Natural Adsorbent Open Access Article Abstract Page Full-Text 1 - The removal of NO2 gas by some natural adsorbents by using the adsorption method Hossein Dashti Khavidaki Raziyeh Jafari Mousa Soleymani 10.22034/jest.2019.44760.4697 Open Access Article Abstract Page Full-Text 2 - Evaluation of cumin stem powder efficiency in Methylene blue removal from aqueous solutions Somaye Rahdar Morteza Ahmadabadi Edrise Bazrafshan Mahmoud Taghavi Open Access Article Abstract Page Full-Text 3 - Study of tea compost column biofilter efficiency to remove some heavy metal ions from aqueous solutions الهامه Mohammadpour M.R Yaftian A.A Zamani پروین Gharbani Open Access Article Abstract Page Full-Text 4 - An Investigation into the Efficiency of the Modified Sawdust and Rice Bran in Treating the Polluted Aqueous Solutions with Cr (VI) Zahra Ameri Mehran Hoodaji Majid Rajaie Mitra Ataabadi 10.30495/wej.2023.28651.2326