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Topic Recovery of valuable materials and fuels
 

Utilizing the Eutrophication in Bioresources Recovery and Biogas Production – A Case Study in Egypt
Mohamed Khalil, Elena Ficara, Nicola Colaninno, Amro El-Baz
J. Ecol. Eng. 2022; 23(12):299–313
DOI: https://doi.org/10.12911/22998993/155082
 

Metal Pillared Bentonite Synthesis and its Characteristics Using X-Ray Diffraction
Sisnayati Sisnayati, Muhammad Said, Nabila Aprianti, Ria Komala, Hendra Dwipayana, Muhammad Faizal
J. Ecol. Eng. 2022; 23(12):68–74
DOI: https://doi.org/10.12911/22998993/155081
 

Pyrolytic Liquid Fuel – An Alternative for Producing Electrical Energy in Mexico
José Nolasco Cruz, Juan José López Ávila, Karla Donjuan Martínez, Irma Pérez Hernández, Álvaro Daniel Zavariz
J. Ecol. Eng. 2022; 23(12):227–232
DOI: https://doi.org/10.12911/22998993/153454
 

Characterization Sludge from Drying Area and Sludge Drying Bed in Sludge Treatment Plant Surabaya City for Waste to Energy Approach
Iva Yenis Septiariva, I Wayan Koko Suryawan, Nurulbaiti Listyendah Zahra, Yika Nabila Kharisma Putri, Ariyanti Sarwono, Fatimah Dinan Qonitan, Jun Wei Lim
J. Ecol. Eng. 2022; 23(7):268–275
DOI: https://doi.org/10.12911/22998993/150061
 

Beneficiation and Upgrading of Low-Grade Feldspar Ore in Medina, Saudi Arabia
Mousa Hasen Gougazeh
J. Ecol. Eng. 2022; 23(6):271–277
DOI: https://doi.org/10.12911/22998993/147834
 

Biomethanation Potential and Enhancement of Acacia Leaves Waste Via Pretreatment and Co-Digestion Strategy
Supachai Hirunsupachote, Pratin Kullavanijaya, Orathai Chavalparit
J. Ecol. Eng. 2022; 23(5):237–250
DOI: https://doi.org/10.12911/22998993/147405
 

Biodiesel Production from Crude Palm Oil Using Kapok Skin KOH (Ceiba Pentandra) Catalyst as Solid Green Catalyst
Jalaluddin Jalaluddin, Zainuddin Ginting, Syariful Maliki, Arif Setiawan, Zulfa Zulfa
J. Ecol. Eng. 2022; 23(5):286–292
DOI: https://doi.org/10.12911/22998993/147404
 

Biosorbents from Mangifera indica L. Peel for the Recovery of Gold from Electronic Waste
Cesar V. Ortinero, Hannah N. Meim, Danila S. Paragas
J. Ecol. Eng. 2022; 23(5):102–108
DOI: https://doi.org/10.12911/22998993/147255
 

Effect of Organic Manure and Plant Growth Promoting Microbes on Yield, Quality and Essential Oil Constituents of Fennel Bulb (Foeniculum vulgare Mill.)
Ramy S. Nada, Ashmawi E. Ashmawi, Emad Mady, Timothy O. Randhir, Ahmed A. Elateeq
J. Ecol. Eng. 2022; 23(5):149–164
DOI: https://doi.org/10.12911/22998993/147252
 

Synthetic Gas Production from Fine Coal Gasification Using Low-Cost Catalyst
Akbar Andican, Muhammad Faizal, Muhammad Said, Nabila Aprianti
J. Ecol. Eng. 2022; 23(5):64–72
DOI: https://doi.org/10.12911/22998993/146766
 

Assessment of a Mining-Waste Dump of Galena Mine in the East of Morocco for Possible Use in Civil Engineering
Faiçal El Khazanti, Ahmed Rachid, Achraf Harrou, Hicham Nasri, Yassine Et-tayea, Meriam El Ouahabi, El Khadir Gharibi
J. Ecol. Eng. 2022; 23(4):336–349
DOI: https://doi.org/10.12911/22998993/146585
 

Changes of Nitrogen and Organic Compound During Co-Composting of Disposable Diaper and Vegetable Wastes on Aerobic Process
Ellina Sitepu Pandebesie, Idaa Warmadewanthi, Susi Agustina Wilujeng, Minar Saraswati Simamora
J. Ecol. Eng. 2022; 23(4):228–234
DOI: https://doi.org/10.12911/22998993/144944
 

Recent Challenges of Biogas Production and its Conversion to Electrical Energy
Siti Noor Khaleeda Mhd Syahri, Hassimi Abu Hasan, Siti Rozaimah Sheikh Abdullah, Ahmad Razi Othman, Peer Mohamed Abdul, Raja Farzarul Hanim Raja Azmy, Mohd Hafizuddin Muhamad
J. Ecol. Eng. 2022; 23(3):251–269
DOI: https://doi.org/10.12911/22998993/146132
 

Extraction and Characterization of Silicon Dioxide from Volcanic Ash of Mount Sinabung, Indonesia: A Preliminary Study
Moraida Hasanah, Timbangen Sembiring, Zuriah Sitorus, Syahrul Humaidi, Fynnisa Zebua, Rahmadsyah Rahmadsyah
J. Ecol. Eng. 2022; 23(3):130–136
DOI: https://doi.org/10.12911/22998993/145479
 

Preliminary Investigation of Bioplastics from Durian Seed Starch Recovery Using PEG 400 for Reducing Marine Debris
Mirna Apriani, Luqman Cahyono, Agung Prasetyo Utomo, Anggara Trisna Nugraha, Alfira Dwi Cahya Ningrum
J. Ecol. Eng. 2022; 23(2):12–17
DOI: https://doi.org/10.12911/22998993/144824
 

Identification of Potential Phytoaccumulator Plants from Tailings Area as a Gold Phytomining Agent
Riky Kurniawan, Hamim Hamim, Cynhia Henny, Awalina Satya
J. Ecol. Eng. 2022; 23(1):169–181
DOI: https://doi.org/10.12911/22998993/143978
 

Biodiesel Production using Oil Extracted from Cooling Pond Wastewater by Esterification of Sulfonated Carbon Catalyst and Transesterification of Na2CO3 Catalyst
Chandra Fitri Kolakaningrum, Tuty Emilia Agustina, Fitri Hadiah
J. Ecol. Eng. 2021; 22(10):51–62
DOI: https://doi.org/10.12911/22998993/142186
 

Study of The Fermentation Conditions of the Bacillus Cereus Strain ARY73 to Produce Polyhydroxyalkanoate from Glucose
Akram R. Yasin, Ithar K. Al-Mayaly
J. Ecol. Eng. 2021; 22(8):41–53
DOI: https://doi.org/10.12911/22998993/140326
 

Oil Recovery from Oilfield Produced Water Using Zinc Oxide Nano Particle as Catalyst in Batch and Continuous System
Hussein Ali Jabbar Alkhazraji, Mohammed Jaafar Ali Alatabe
J. Ecol. Eng. 2021; 22(8):278–286
DOI: https://doi.org/10.12911/22998993/140281
 

Bio Oil Production by Thermal and Catalytic Pyrolysis of Waste Tires
Dunya Ahmed Khalaf, Zaidun Naji Abudi, Saadi Muhammed Dhaher
J. Ecol. Eng. 2021; 22(8):189–199
DOI: https://doi.org/10.12911/22998993/140258
 

Study the Recycling of Red Mud in Iron Ore Sintering Process
Ahmed Abdelazim Elsayed Ibraheem Abdou Khalifa, Vladimir Yurievich Bazhin, Yana Vadimovna Kuskova, Ahmed Abdelrahim, Yasser Momtaz Zaki Ahmed
J. Ecol. Eng. 2021; 22(6):191–201
DOI: https://doi.org/10.12911/22998993/137966
 

Purification of Synthetic Gas from Fine Coal Waste Gasification as a Clean Fuel
Muhammad Faizal, Muhammad Said, Enggal Nurisman, Nabila Aprianti
J. Ecol. Eng. 2021; 22(5):114–120
DOI: https://doi.org/10.12911/22998993/135862
 

Analysis of Optimum Temperature and Calcination Time in the Production of CaO Using Seashells Waste as CaCO3 Source
Sarah Dampang, Endah Purwanti, Fredina Destyorini, Setyo Budi Kurniawan Budi Kurniawan, Siti Rozaimah Sheikh Abdullah, Muhammad Fauzul Imron
J. Ecol. Eng. 2021; 22(5):221–228
DOI: https://doi.org/10.12911/22998993/135316
 

Electro-Kinetic Remediation of Nickel from Contaminated Soil Using Bio remedies Banana Peels and Surfactant-Enhanced
Laith Hamdan Hawal, Lubna Al-Zubaidi, Serror Atta Allah
J. Ecol. Eng. 2021; 22(5):214–220
DOI: https://doi.org/10.12911/22998993/135315
 

Performance of Reactive Nitrogen in Leachate Treatment in Constructed Wetlands
Isni Arliyani, Bieby Voijant Tangahu, Sarwoko Mangkoedihardjo
J. Ecol. Eng. 2021; 22(5):205–213
DOI: https://doi.org/10.12911/22998993/135314
 

Hydrothermal Carbonization Kinetics of Lignocellulosic Municipal Solid Waste
Herlian Eriska Putra, Djaenudin Djaenudin, Enri Damanhuri, Kania Dewi, Ari Darmawan Pasek
J. Ecol. Eng. 2021; 22(3):188–198
DOI: https://doi.org/10.12911/22998993/132659
 

Characterisation and Reverse Engineering of Eco-friendly Historical Mortar: Qasr Tuba, Desert Castles in Jordan
Ayoup M. Ghrair, Adi J. Said, Naela Aldaoud, Riham Miqdadi, Ahmad A. L. Ahmad
J. Ecol. Eng. 2021; 22(3):121–134
DOI: https://doi.org/10.12911/22998993/132608
 

Distilled Spirit Extraction of Phenolic Antioxidants from Fruit and Vegetable Residues
Cesar Ortinero, Rosalie Rafael, Charmaine Eljie Rayos, Katherine Bautista, Mark Aldren Feliciano, Lexter Natividad, Gaudencio Natividad
J. Ecol. Eng. 2021; 22(1):125–131
DOI: https://doi.org/10.12911/22998993/128864
 

Transforming Bubble Wrap and Packaging Plastic Waste into Valuable Fuel Resources
Mega Mutiara Sari, Takanobu Inoue, Rofiah Rofiah, Iva Yenis Septiariva, Wisnu Prayogo, I Wayan Koko Suryawan, Nur Novilina Arifianingsih
J. Ecol. Eng. 2023; 24(8)
 

Physicochemical and Mechanical Characterization of Ceramic Materials from Meknes Region (Morocco)
Hamza Mesrar, Laila Mesrar, Raouf Jabrane
J. Ecol. Eng. 2023; 24(8)
 

Optimization of Response Surface Methodology for Removal of Cd (II) from Wastewater using Low Cost Materials
Risalah A. Mohammed, Maryam Jawad Abdulhasan, Shahad A. Raheem, Abeer I. Alwared, Noor A. Mohammed, Rand Fadhil Kadhim, Alaa Dhari Jawad Al-Bayati
J. Ecol. Eng. 2023; 24(8)
 

Comparison of Two Biosorbent Beads for Methylene Blue Discoloration in Water
Gani Purwiandono, Puji Lestari
J. Ecol. Eng. 2023; 24(8)
 

Mechanical Properties of Polypropylene Composites with different Reinforced Natural Fibers – A Comparative Study
Pintor Simamora, Josua Simanjuntak, Karya Sinulingga, Andromeda Dwi Laksono
J. Ecol. Eng. 2023; 24(7):311–317
DOI: https://doi.org/10.12911/22998993/164757
 

Influence of Sieve Size on Calorific Value and Proximate Properties of Bio-Briquette Composites
Hasniah Aliah, Indri Winarti, Ryan Nur Iman, Andhy Setiawan, Rizky Safarina, Asti Sawitri
J. Ecol. Eng. 2023; 24(7):25–34
DOI: https://doi.org/10.12911/22998993/163309
 

Evaluating the In-Site Sorting of Solid Waste in Selected Educational Institutions – A Pilot Study
Husam Al-Hamaiedeh, Enam AL-Rafiaha, Omar Al-Khashman, Osama Mohawesh, Ali El Hanandeh
J. Ecol. Eng. 2023; 24(5):137–143
DOI: https://doi.org/10.12911/22998993/161617
 

Thermochemical Degradation of Polypropylene – Energy and Exergy Analysis in a Tubular Reactor
Jose Nolasco, Irma Pérez Hernández, María de Lourdes Castellanos Villalobo, Angélica Pérez Henández, Juan José López Ávila
J. Ecol. Eng. 2023; 24(5):14–21
DOI: https://doi.org/10.12911/22998993/161079
 

Refuse Derived Fuel Potential Production from Temple Waste as Energy Alternative Resource in Bali Island
I Made Wahyu Wijaya, I Gusti Ngurah Made Wiratama, I Kadek Ardi Putra, Azmi Aris
J. Ecol. Eng. 2023; 24(4):288–296
DOI: https://doi.org/10.12911/22998993/161015
 

Simple and Combined Pretreatment of a Mixture of Forestry and Aromatic-Medicinal Plant Waste by Chemical, Physical and Enzymatic Methods
Ahmed Bendaoud, Abdelkhalek Belkhiri, Mohammed Maai, Tarik Moubchir, Anouar Hmamou, Sara Tlemcani, Noureddine Eloutassi, Amal Lahkimi
J. Ecol. Eng. 2023; 24(4):376–383
DOI: https://doi.org/10.12911/22998993/160094
 

Characteristics of Char from Low-Rank Coal Gasification
Marwan Asof, Susila Arita, Winny Andalia
J. Ecol. Eng. 2023; 24(4):78–84
DOI: https://doi.org/10.12911/22998993/159400
 

Analysis of the Possibility of Heavy Metal Ions Removal from Aqueous Solutions on Fruit Pomace
Małgorzata Krasowska, Małgorzata Kowczyk-Sadowy, Ewa Szatyłowicz, Sławomir Obidziński
J. Ecol. Eng. 2023; 24(3):169–177
DOI: https://doi.org/10.12911/22998993/158381
 

Bacterial and Fungal-Mineral Interactions and their Application in Bioremediation – A Review
Renjbar Muksy, Kamal Kolo, Shorish Mustafa Gorony
J. Ecol. Eng. 2023; 24(5):1–13
DOI: https://doi.org/10.12911/22998993/157567
 

Assessment of Ultrasound-Assisted Extraction of Caffeine and its Bioactivity
Salsabeel R. Hassan, Atheer M. Al Yaqoobi
J. Ecol. Eng. 2023; 24(3):126–133
DOI: https://doi.org/10.12911/22998993/157540
 

New Material Nanocomposite Thermoplastic Elastomer with Low Cost Hybrid Filler Oil Palm Boiler Ash/Carbon Black
Nurdin Bukit, Erna Frida, Ferry Rahmat Astianta Bukit, Bunga Fisikanta Bukit, Perdinan Sinuhaji
J. Ecol. Eng. 2023; 24(2):302–308
DOI: https://doi.org/10.12911/22998993/156903
 

Optimization of Particle Size and Ramie Fiber Ratio on Hybrid Bio Panel Production from Oil Palm Trunk as Thermal Insulation Materials
Indra Mawardi, Nurdin Nurdin, Fakhriza Fakhriza, Samsul Rizal, Sri Aprilia, Muhammad Faisal, Ramadhansyah Putra Jaya
J. Ecol. Eng. 2023; 24(2):39–49
DOI: https://doi.org/10.12911/22998993/156830
 

Desulfurization of Crude Oil by Laboratory Developed Multipumping Flow Injection Analysis System with Optimization by Response Surface Methodology
Ahmed Abdulrazzaq Hadi, Ali Abdulkhabeer Ali, Mohammed Turki Khathi
J. Ecol. Eng. 2023; 24(2):328–339
DOI: https://doi.org/10.12911/22998993/156662
 

Energy Inputs on the Production of Plastic Products
Halina Marczak
J. Ecol. Eng. 2022; 23(9):146–156
DOI: https://doi.org/10.12911/22998993/151815
 

Optimization of Palm Oil Boiler Ash Biomass Waste as a Source of Silica with Various Preparation Methods
Bunga Fisikanta Bukit, Erna Frida, Syahrul Humaidi, Perdinan Sinuhaji, Nurdin Bukit
J. Ecol. Eng. 2022; 23(8):193–199
DOI: https://doi.org/10.12911/22998993/150694
 

The Behavior of Jordanian Oil Shale during Combustion Process from the El-Lajjun Deposit
Mousa Gougazeh, Sameh Alsaqoor, Gabriel Borowski, Ashraf Alsafasfeh, Ismail I. Hdaib
J. Ecol. Eng. 2022; 23(8):133–140
DOI: https://doi.org/10.12911/22998993/150682
 

Natural Gas Flaring in Nigeria, its Effects and Potential Alternatives – A Review
Francis B. Elehinafe, Chizitelu I. Nwizu, Olayemi B. Odunlami, Feyisayo D. Ibukun
J. Ecol. Eng. 2022; 23(8):141–151
DOI: https://doi.org/10.12911/22998993/149822
 
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