Search results

1 – 2 of 2
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 2 June 2020

Güray Kılınççeker, M. Kemal Sangün, Sema Çelik, Utku Arslan and Farhad Zarifi

Unrefined vegetable oils contain triglycerides and free fatty acids as the main ingredient, but besides, they contain waxes, phospholipids, tocopherols, β-carotene, chlorophyll…

199

Abstract

Purpose

Unrefined vegetable oils contain triglycerides and free fatty acids as the main ingredient, but besides, they contain waxes, phospholipids, tocopherols, β-carotene, chlorophyll and other trace amounts depending on the type of oil. Most undesirable substances such as residues, free fatty acids and phospholipids are separated in the neutralization process of the oil refining. As a pigment, β carotene is separated by the bleaching earth (BE) in the bleaching process. The BE is disposed of as waste after the bleaching process. In this study, waste BE, which is allocated for disposal, has become reusable.

Design/methodology/approach

For this purpose, the oil is separated from the BE by solvent extraction under room conditions. AOCS Ba 3-38, TS EN ISO 734, ISO 15305 and TS 324 standard methods were used.

Findings

As a result of the analysis, it was found that 1% of oil remained in the recovered BE. The recovered BE containing 1% oil was carbonized at 550oC for 1 and 2 h. The BE obtained after this process was used in the bleaching process at a rate of 1%. Reuse attempts were repeated seven times, colour-opening capacities were measured and BET analyses were performed to establish a relationship between surface area-discolouration capacity and reusability.

Originality/value

This study demonstrates that recovery of waste BE can be performed and if this reusability considers in the industrial scale, it will save on oil refining costs and reduce waste.

Details

Pigment & Resin Technology, vol. 49 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Access Restricted. View access options
Article
Publication date: 23 March 2020

Majid Mazhar, Majid Abdouss, Farhad Zarifi and Mojdeh Zargaran

The purpose of this study is to investigate the performance of eight perylene diimide pigments as a hypothetical building facades using EnergyPlus.

151

Abstract

Purpose

The purpose of this study is to investigate the performance of eight perylene diimide pigments as a hypothetical building facades using EnergyPlus.

Design/methodology/approach

A hypothetical building located in Tehran is modeled using EnergyPlus, and the effectiveness of the pigments was examined. Furthermore, the performance of the pigments was compared with those of common commercial black (carbon black) and red (iron oxide) pigments.

Findings

The results show that the studied black pigments reduce the cooling energy demand up to 37 per cent in comparison with carbon black paint and the red ones, which reduce the value by as much as 32 per cent in comparison to iron oxide.

Originality/value

This study demonstrates that the application of cool paints rather than common paints will significantly reduce the cooling energy demand and subsequent costs.

Details

Pigment & Resin Technology, vol. 49 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

1 – 2 of 2
Per page
102050