This issue consists of 12 articles from 56 authors affiliated with 21 institutions from 7 countries including:

• Nigeria (Ahmadu Bello University; Nigerian Institute of Transport Technology; Universitas Pendidikan Indonesia; IPB University; Universitas Sultan Ageng Tirtayasa)
• Indonesia (Universitas Djuanda; Sampoerna University; Universitas Gajah Mada)
• Australia (University of Melbourne)
• Brunei Darussalam (University Brunei Darussalam)
• Malaysia (Taylor’s University; Universiti Malaysia Perlis; Universiti Teknologi Malaysia; Heriot-Watt University Malaysia; Universiti Teknikal Malaysia Melaka; Malaysian Palm Oil Board)
• Japan (Kagoshima University)
• Iraq (University of Technology-Iraq; Southern Technical College; Middle Technical University; Southern Technical College)

Articles

Photocatalytic Removal of Toxic Metals from Tannery Wastewater using Green Synthesized Zinc Oxide Nanoparticles

Tyosue Christopher Kpega, James Dama Habila, Idongesit Edem Okon, Patricia Adama Ekwumemgbo

Techno-Economic Analysis of Production Ecobrick from Plastic Waste to Support Sustainable Development Goals (SDGS)

Dede Syahrudin, Martin Roestamy, R. Siti Pupu Fauziah, Rita Rahmawati, Ginung Pratidina, Irma Purnamasari, Saepudin Muhtar, Euis Salbiah

Techno-Economic Analysis of Sawdust-Based Trash Cans and Their Contribution to Indonesia’s Green Tourism Policy and the Sustainable Development Goals (SDGs)

Afmi Apriliani, Cecep Waahyudin, Faisal Tri Ramdani, Abraham Yazdi Martin, Dede Syahrudin, Denny Hernawan, Euis Salbiah

Fabrication of Synthetic Lumbar Vertebrae by a Combination of FDM 3D-Printing and PU Foam Casting from Two Injection Techniques for Surgical Training

Farid Triawan, Nisa Khoiriyah, A. Asriyanti, Muhammad Satrio Utomo, Kushendarsyah Saptaji, Nikolas Krisma Hadi Fernandez, Muhammad Akhsin Muflikhun

Definition and Role of Sustainable Materials in Reaching Global Sustainable Development Goals (SDGs) Completed with Bibliometric Analysis

Risti Ragadhita, Asep Bayu Dani Nandiyanto, Obie Farobie, Teguh Kurniawan, M. Roil Bilad

The Journal of Engineering, Science and Technology (JESTEC): A Bibliometric Insight into Materials Research Trends and Innovation to Support Sustainable Development Goals (SDGs)

Abdulkareem Sh. Mahdi Al-Obaidi

Thermal Effects on the Mechanical Performance of Adhesively Bonded T-Joints for Structural Applications to Support Sustainable Development Goals (SDGs)

Mohd Afendi Bin Rojan, Izzawati Basirom, Mohd Shukry Abdul Majid, Ruslizam Daud, Abu Bakar Shahriman

Effect of Oxy-hydrogen Enrichment into Water-in-Biodiesel Emulsion Towards Performance and Exhaust Emissions of a Diesel Engine

Frendy Rian Saputro, Ahmad Muhsin Ithnin, Mohd Fareez Edzuan Abdullah, Chungpyo Hong, Takeshi Ohtaka, Aluyah Sipi, Wira Jazair Yahya

Upcycling Polymeric Waste into Interpenetrating Polymer Network Adsorbents for Sustainable Wastewater Treatment

Ghayda Yaseen Al Kindi, Rana J. Kadhim, Elaf Abd Al-Azal Ihsan, Sinan A. Al-Haddad

Interface Stresses Due to Imbalanced Diffusion in Wirebonding Between Gold (Au) and Aluminum (Al)

Anita Akmar Kamarolzaman, Ghazali Omar, Fina Sofiyyah Shukor

Effect of the Width-Diameter Ratio of Twisted Tape Inserts in Heat Exchanger Tubes on Heat Transfer

Farah Abd-Alsalam Ibrahim, Nabil Jamil Yasin, Tahseen Ali Jabbar

Liquid Desiccant-assisted Dehydration of Bio-based Oligomers

Ahmad Syafiq Ahmad Hazmi, Wan Nur Fatihah Wan Muhammad Zulkifli, Tuan Noor Maznee Tuan Ismail, Zafarizal Aldrin Azizul Hasan