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Clean Technologies, Volume 5, Issue 2

June 2023 - 16 articles

Cover Story: The use of alternatives for petroleum-based products is becoming more and more important. Thus, biodiesel could play an important role in contributing to the implementation of biorefineries, which represent desirable goals in terms of sustainability, green chemistry and circular economy. However, one challenge related to biodiesel based on vegetable oils is its low oxidative stability, which can alter the properties of these products during storage. To avoid this problem, interesting antioxidants, such as propyl gallate (PG), could be added to biodiesel to keep its main properties during oxidation. The aim of this work was to assess the effectiveness of PG during cardoon biodiesel oxidation. As a result, it was proven that PG was highly effective, increasing the length of oxidative stability to more than 10 h at 600 mg·L−1 and retaining its main viscosity and acidity during oxidation. View this paper
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Articles (16)

  • Review
  • Open Access
26 Citations
5,496 Views
25 Pages

Moving towards Greener Road Transportation: A Review

  • Nick Rigogiannis,
  • Ioannis Bogatsis,
  • Christos Pechlivanis,
  • Anastasios Kyritsis and
  • Nick Papanikolaou

Road transportation accounts for about 20% of the total GHG emissions in the EU. Nowadays, the substitution of conventional fossil fuel-based ICEs with electric engines, or their hybridization, operating along with Energy Storage Systems, seems to be...

  • Article
  • Open Access
3 Citations
2,370 Views
22 Pages

Forecast Optimization of Wind Speed in the North Coast of the Yucatan Peninsula, Using the Single and Double Exponential Method

  • Christy Pérez-Albornoz,
  • Ángel Hernández-Gómez,
  • Victor Ramirez and
  • Damien Guilbert

Installation of new wind farms in areas such as the north coast of the Yucatan peninsula is of vital importance to face the local energy demand. For the proper functioning of these facilities it is important to perform wind data analysis, the data ha...

  • Project Report
  • Open Access
2 Citations
6,216 Views
31 Pages

Alternative Fuel Substitution Improvements in Low NOx In-Line Calciners

  • Essossinam Beguedou,
  • Satyanarayana Narra,
  • Komi Agboka,
  • Damgou Mani Kongnine and
  • Ekua Afrakoma Armoo

The process of making cement clinker uses a lot of energy and produces a lot of pollution. Currently, cement companies use a combination of traditional fossil fuels and alternative fuels (AF-Fuels) to lower their energy consumption and environmental...

  • Article
  • Open Access
28 Citations
17,343 Views
17 Pages

During the last few years, electric and hydrogen vehicles have become an alternative to cars that use internal combustion engines. The number of electric and hydrogen vehicles sold has increased due to support from local governments and because car m...

  • Article
  • Open Access
6 Citations
4,229 Views
21 Pages

Torrefaction of Pine Using a Pilot-Scale Rotary Reactor: Experimentation, Kinetics, and Process Simulation Using Aspen Plus™

  • Suchandra Hazra,
  • Prithvi Morampudi,
  • John C. Prindle,
  • Dhan Lord B. Fortela,
  • Rafael Hernandez,
  • Mark E. Zappi and
  • Prashanth Buchireddy

Biomass is an excellent sustainable carbon neutral energy source, however its use as a coal/petroleum coke substitute in thermal applications poses several challenges. Several inherent properties of biomass including higher heating value (HHV), bulk...

  • Article
  • Open Access
5 Citations
9,577 Views
23 Pages

Material Flow Cost Accounting (MFCA) is an environmental management accounting method that allocates costs to material and energy flows through a process, thereby enabling a simultaneous reduction in environmental impacts alongside an improvement in...

  • Article
  • Open Access
6 Citations
2,297 Views
14 Pages

Cyanobacteria Arthospira platensis as an Effective Tool for Gadolinium Removal from Wastewater

  • Nikita Yushin,
  • Inga Zinicovscaia,
  • Liliana Cepoi,
  • Tatiana Chiriac,
  • Ludmila Rudi and
  • Dmitrii Grozdov

The biosorption and bioaccumulation of gadolinium by Arthospira platensis in batch experiments was examined. In biosorption experiments, the influence of pH, gadolinium concentration, time of contact and temperature on Arthospira platensis sorption c...

  • Review
  • Open Access
38 Citations
13,062 Views
29 Pages

To mitigate dangerous climate change effects, the 195 countries that signed the 2015 Paris Agreement agreed to “keep the increase in average global surface temperature below 2 °C and limit the increase to 1.5 °C” by reducing carbo...

  • Review
  • Open Access
38 Citations
23,495 Views
25 Pages

Vapor Compression Cycle: A State-of-the-Art Review on Cycle Improvements, Water and Other Natural Refrigerants

  • Fadi Alsouda,
  • Nick S. Bennett,
  • Suvash C. Saha,
  • Fatemeh Salehi and
  • Mohammad S. Islam

Air conditioning and refrigeration have become necessary in modern life, accounting for more than 7.8% of greenhouse gases (GHG) emitted globally. Reducing the environmental impact of these systems is crucial for meeting the global GHG emission targe...

  • Article
  • Open Access
6 Citations
3,005 Views
15 Pages

Use of Propyl Gallate in Cardoon Biodiesel to Keep Its Main Properties during Oxidation

  • Sergio Nogales-Delgado,
  • Agustina Guiberteau Cabanillas,
  • Juan Pedro Moro and
  • José María Encinar Martín

The use of alternatives for petroleum-based products is becoming more and more important, especially considering the new and constantly changing geopolitical context, where excessive energy dependence is not desirable. Thus, biodiesel could play an i...

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Clean Technol. - ISSN 2571-8797