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Clean Technologies, Volume 7, Issue 3

September 2025 - 32 articles

Cover Story: The environmental impacts of the production of packaging in contact with food are still high. This research evaluates the environmental performance, using the Life Cycle Assessmet approach, of a single-use food contact packaging made with polypropylene. The aim is to propose mitigation strategies in order to reduce the environmental impacts. Three different scenarios with different energy source mixes were evaluated. The results show that upstream processes contribute most to the environmental profile followed by core processes. An increase in the use of renewable energy can lead to environmental benefits, with a reduction in the impact ranging from 13% to 61% depending on the energy source mix. View this paper
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Articles (32)

  • Article
  • Open Access
1,024 Views
21 Pages

Sludge dewatering remains a resource-intensive process, often constrained by high residual moisture content and inefficient chemical conditioning. Conventional systems typically rely on fixed polymer dosages and predetermined filtration pressures, wh...

  • Article
  • Open Access
910 Views
16 Pages

Non-Fuel Carbon-Neutral Use of Lignite: Mechanism of Bitumen and Humic Acid Interaction

  • Yuriy Prysiazhnyi,
  • Yurii Lypko,
  • Taras Chipko,
  • Denis Miroshnichenko,
  • Maryna Zhylina,
  • Mykhailo Miroshnychenko,
  • Hennadii Omelianchuk and
  • Serhiy Pyshyev

The study investigates the interaction of humic acids (HAs) with road petroleum bitumen to enhance its performance and resistance to technological aging. It addresses a critical gap in understanding the modification mechanisms. The research is motiva...

  • Review
  • Open Access
1 Citations
1,713 Views
37 Pages

Renewable-Based Isolated Power Systems: A Review of Scalability, Reliability, and Uncertainty Modeling

  • Mehrdad Ghahramani,
  • Daryoush Habibi,
  • Seyyedmorteza Ghamari,
  • Hamid Soleimani and
  • Asma Aziz

Electric power systems are increasingly becoming more decentralized. Many communities depend on isolated power systems that operate independently of the main grid. Remote, islanded, and isolated systems face challenges due to the intermittency and un...

  • Article
  • Open Access
1,415 Views
70 Pages

This paper proposes a nonlinear control strategy for a microgrid, comprising a PV generator, wind turbine, battery, solid oxide fuel cell (SOFC), electrolyzer, and a three-phase four-leg voltage source inverter (VSI) with an LC filter. The microgrid...

  • Article
  • Open Access
841 Views
28 Pages

This study evaluates the sorption behavior of natural zeolite (NZ) and Fe(III)-modified natural zeolite (FeZ) for Ni(II) ions, with the objective of assessing their potential for application in the remediation of nickel-contaminated environments. Opt...

  • Article
  • Open Access
549 Views
12 Pages

Sulfides are frequently encountered in natural mineral water and different wastewater streams, and their presence significantly impedes subsequent water treatment or utilization. Sulfide removal, or at least its reduction, can be accomplished in diff...

  • Review
  • Open Access
1,402 Views
33 Pages

With the world facing the twin pressures of a warming climate and an ever-increasing amount of waste, it is becoming increasingly clear that we need to rethink the way we generate energy and use materials. Despite growing awareness, our energy system...

  • Article
  • Open Access
784 Views
22 Pages

Performance of Textile-Based Water-Storage Mats in Treating Municipal Wastewater on Urban Rooftops for Climate-Resilient Cities

  • Khaja Zillur Rahman,
  • Jens Mählmann,
  • Michael Blumberg,
  • Katy Bernhard,
  • Roland A. Müller and
  • Lucie Moeller

The aim of this study was to evaluate the treatment efficiency and applicability of using textile-based mats as roof biofilters on urban buildings for purifying preliminary treated wastewater (PTW) collected from a three-chamber septic tank. Therefor...

  • Article
  • Open Access
811 Views
15 Pages

Sewage Sludge Biochar as a Persulfate Activator for Methylene Blue Degradation

  • Yerkanat N. Kanafin,
  • Rauza Turpanova,
  • Moldir Beisekova and
  • Stavros G. Poulopoulos

Municipal sewage sludge represents a significant environmental challenge due to its large-scale production and limited disposal options. Pyrolysis, a thermal decomposition process, offers a promising approach for converting sewage sludge into biochar...

  • Article
  • Open Access
970 Views
19 Pages

Physicochemical Characterisation of Olive Mill Wastewaters Based on Extraction Methods and Filtration Levels

  • Inês S. Afonso,
  • Cristina Duarte,
  • Maria João Afonso,
  • António E. Ribeiro,
  • Joana S. Amaral,
  • Patrícia C. Sousa,
  • Rui A. Lima and
  • João E. Ribeiro

Olive mill wastewaters (OMWW) generated during olive oil extraction represent a significant environmental challenge due to their high organic matter content, acidic pH, phenolic content, and toxicity. Their composition varies widely depending on the...

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Clean Technol. - ISSN 2571-8797Creative Common CC BY license