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Processes, Volume 11, Issue 4

April 2023 - 325 articles

Cover Story: This study successfully converted waste polystyrene (PS) into oil and char products through slow pyrolysis at 475–575°C for 30 min under 10–15psi. The PS-oil product contained predominantly styrene with the presence of dimers and trimers. Styrene can produce PS or vinyl-ester resins but needs to be refined and distilled to obtain a pure fraction. The PS-char product contained partially reacted PS, and further pyrolysis is required for complete conversion. The results show that styrene was produced at 57–60% from all leading oil compounds (2,4-diphenyl-1-butene, 2,4,6-triphenyl-1-hexene, and toluene), and 475 °C had the major average of conversion effectiveness of 91.3%. View this paper
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Articles (325)

  • Article
  • Open Access
7 Citations
2,037 Views
24 Pages

Some Logarithmic Intuitionistic Fuzzy Einstein Aggregation Operators under Confidence Level

  • Khaista Rahman,
  • Ibrahim M. Hezam,
  • Darko Božanić,
  • Adis Puška and
  • Miloš Milovančević

21 April 2023

The objective of this paper is to introduce some new logarithm operational laws for intuitionistic fuzzy sets. Some structure properties have been developed and based on these, various aggregation operators, namely confidence logarithmic intuitionist...

  • Article
  • Open Access
2 Citations
4,288 Views
23 Pages

21 April 2023

Rapid shifts in consumer preferences have prompted enterprises to offer products in small quantities and various options. To meet market demands, enterprises must be able to research the development of modern conceptions of manufacturing systems whic...

  • Article
  • Open Access
7 Citations
13,074 Views
25 Pages

Reducing the Scrap Rate on a Production Process Using Lean Six Sigma Methodology

  • Ioana-Cătălina Enache,
  • Oana Roxana Chivu,
  • Ana-Maria Rugescu,
  • Elena Ionita and
  • Ionut Valentin Radu

21 April 2023

The aim of this case study is to implement the Lean Six Sigma methodology to reduce the scrap rate of the edge-bending process of a metal door case used in the assembly process of refrigeration appliances. This study was initiated because the assembl...

  • Review
  • Open Access
7 Citations
4,007 Views
25 Pages

21 April 2023

In the toxicological testing of new small-molecule compounds, it is desirable to establish in silico test methods to predict toxicity instead of relying on animal testing. Since quantitative structure–activity relationships (QSARs) can predict...

  • Article
  • Open Access
1 Citations
2,099 Views
12 Pages

A Peptide Potential Based on a Bond Dipole Representation of Electrostatics

  • Yan-Min Li,
  • Xiao-Han Zheng,
  • Chao-Ming Li,
  • Qi Liu,
  • Lei Wang,
  • Qiang Hao and
  • Chang-Sheng Wang

21 April 2023

A potential based on a bond dipole representation of electrostatics is reported for peptides. Different from those popular force fields using atom-centered point-charge or point-multipole to express the electrostatics, our peptide potential uses the...

  • Article
  • Open Access
1 Citations
2,407 Views
23 Pages

21 April 2023

The examination and choice of an alternate composite material for the high-voltage circuit of Otto cycle internal combustion engines—more commonly known as gasoline engines—are presented in the research that follows. To do this, multicrit...

  • Article
  • Open Access
12 Citations
4,137 Views
21 Pages

21 April 2023

Many laboratory- and pilot-scale studies on anaerobic co-digestion have been conducted in Republic of Korea; however, studies on full-scale demonstration facilities are lacking. This study aimed to present a successful case of a large-scale anaerobic...

  • Article
  • Open Access
10 Citations
3,192 Views
17 Pages

Poplar Wood Pretreatment Using Deep Eutectic Solvents for Promoting Enzymatic Hydrolysis

  • Xuyang Zhao,
  • Ying Zhan,
  • Lihua Han,
  • Xiaoran Sun,
  • Tianyu Zhang and
  • Zheng Zhao

21 April 2023

Bioethanol produced from lignocellulose is a renewable energy substitute for traditional fossil fuels. Poplar wood as forest waste is popular in bioethanol production. Nonetheless, the complex structure of lignocellulose leads to low reducing sugar a...

  • Article
  • Open Access
7 Citations
1,855 Views
14 Pages

Study and Optimization Defect Layer in Powder Mixed Electrical Discharge Machining of Titanium Alloy

  • Dragan Rodic,
  • Marin Gostimirovic,
  • Milenko Sekulic,
  • Borislav Savkovic and
  • Andjelko Aleksic

21 April 2023

Electrical discharge machining (EDM) has recently become very popular for processing titanium alloys, but surface quality is a major problem. During machining, a defect layer inevitably forms on the surface, which can have a negative impact on surfac...

  • Article
  • Open Access
1 Citations
2,864 Views
13 Pages

21 April 2023

In this paper, a layer-by-layer removal model of surface atoms (Al) is established according to the atomic structure of sapphire, which can accurately calculate etch rates of crystal planes and analyze the anisotropy of etch rates of sapphire. Firstl...

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Processes - ISSN 2227-9717Creative Common CC BY license