Volume 12 Number 4 (Apr. 2021)

Article#	Title & Authors	Page
1325	New Normal Role in PM2.5 Reduction in Bangkok by Sopa Chinwetkitvanich, Thawat Ngamsritrakul, and Sirima Panyametheekul	100
1326	Comparative Study between Membrane Bioreactor MBR and Rotating Biological Contactors RBC for Greywater Treatment by Amr M. Abdelkader	107
1327	Fe(III)-Aqua Complex Mediated Photodegradation of Methylene Blue Dye by Ashfeen Nawar, Md. Ataur Rahman, and Md. Mufazzal Hossain	112
1328	The Level of Threats and Community Capacity Concerning to Landslide Emergency in Banjarnegara Indonesia by Erni Suharini, Fakhfiyani Arfina, and Edi Kurniawan	118
1329	Evaluation of Boosted Regression Tree for the Prediction of the Maximum 24-Hour Concentration of Particulate Matter by Wan Nur Shaziayani, Ahmad Zia Ul-Saufie, Syarifah Adilah Mohamed Yusoff, Hasfazilah Ahmat, and Zuraira Libasin	126