| Welcome to the first issue of the new journal – Environmental Research & Technology | Mehmet Sinan BİLGİLİ, Ahmet DEMİR | 1–3 |
| Fuzzy approach to predict methane production in full-scale bioreactor landfills | Martina DI ADDARIO, Bernardo RUGGERI | 4–13 |
| Sub optimal e-waste management and the lost opportunity | Rakesh TYAGI, Priyanka KAUSHAL | 14–22 |
| Adsorption of 2,4-dichlorophenoxyacetic acid on peanut shells: effect of initial concentration | Elçin DEMİRHAN, Elif ÇULHAOĞLU | 23–26 |
| Method for synthesis and control of biofuel supply chains integrated with the relevant systems for utilization of production-generated waste by-products | Yunzile R. DZHELIL, E. Ivanov GANEV, B. Bonev IVANOV, D. Gospodinov DOBRUDZHALIEV | 27–33 |
| $CO_2$ capture analysis of tobacco biochar- $AlCl_3$ composite | Yildiray TOPCU, Nejmi SOYLER, Selim CEYLAN | 34–37 |
| Copper removal from ammoniacal spent etchant by using magnetic nanoparticles | Zehra Semra CAN, Gül Gülenay HACIOSMANOĞLU, Oumer Ali YASSİN, Ebru TOKSOY ÖNER, Seval GENÇ | 38–42 |
| A comparison of bioethanol and biochar production from various algal biomass samples and sweet sorghum energy crop | Didem ÖZÇİMEN, Anıl Tevfik KOÇER, Benan İNAN | 43–50 |
| Development of velocity sensor to optimize the energy yield in a biogas plant | Abdullah NSAIR, Olaf BADE, Kerstin KUCHTA | 51–56 |