Volume 12 Number 5 (May 2021)

Article#	Type	Article Title & Authors ( Volume 12 Number 5 (May 2021))	Page
1330	Article	Optimization Modeling of nFe⁰/Cu-PRB Design for Cr(VI) Removal from Groundwater by I. Maamoun O. Falyouna R. Eljamal K. Bensaida O. Eljamal	131
1331	Article	Design and Deployment of an IoT-Based Air Quality Monitoring System by Tuyen Phong Truong Duy Thanh Nguyen Phong Vu Truong	139
1332	Article	Sustainable Use of Natural Resources to Improve the Quality of Life in the Alto Palcazu Population Center, Iscozazin-Peru by Doris Esenarro Ciro Rodriguez Jennifer Arteaga Godilia Garcia Fabiana Flores	146
1333	Article	Water Footprint Assessment of Thai Banana Production by Cheerawit Rattanapan Weerawat Ounsaneha	151
1334	Article	Indicators for Sustainable Redevelopment of Cultural Landscapes — Huangpu Veterans Quarter in Taiwan by Kuo-Wei Hsu Nai-Chia Chao Jhong-Ping Xie	157