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Waste Technology
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
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Articles 2 Documents
 1 
Search results for , issue "Vol 5, No 2 (2017)" : 2 Documents clear
THE STUDY ON THE EFFECT OF PROCESS VARIABLES TOWARDS BIOADSORBENT PERFORMANCE OF MODIFIED PALM BUNCH FOR THE REDUCTION OF 3-MCPD ON THE PALM OIL Wahyuningsih Wahyuningsih; Mohamad Endy Yulianto; Rizka Amalia; Eflita Yohana
Waste Technology Vol 5, No 2 (2017)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/5.2.%p

Abstract

Crude palm oil was consumed as a healthy food oil, it contains a 3-monochloro-propane-1,2-diol (3-MCPD) ester in the range of 0.04-0.05 ppm. The 3-MCPD compound is one of the contaminants belonging to the chloropropanol group that is genotoxin carcinogen. The 3-MCPD ester content specification in palm oil is still a polemic, but some EU countries already use it as a barrier of palm oil trade in the European region. It is therefore necessary to develop an integrated palm oil refining through adsorption with a modified palm empty fruit bunch bioadsorbent to reduce 3-MCPD ester (<0.02 ppm / Codex Standard).
Extraction of Natural Dyes from Palm’s Empty Fruit Bunches and Their Application on Cotton Fabric Wusana Agung Wibowo
Waste Technology Vol 5, No 2 (2017)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/5.2.%p

Abstract

Natural dyes was extracted from palm’s empty fruit bunches (PEFB) by water extraction and applied for cotton fabric dyeing. The extracted dyes was characterized by liquid mass spectrometry and dyed cotton fabric was characterized by color fastnest to laundering and rubbing tests. Experimental results showed that soxhlet extraction process of PEFB for 80 minutes yielded 13.8%bw of solid dyes to naturally-dried PEFB with 4.15%bw of tannins. Furthermore, production of natural dyes was carried out in a 500 ml flask by extracting 25 g of PEFB in 250 ml of water at 100oC for 120 minutes. Absorbance of extracted dyes was found to be 3.925 at λmax. Cotton fabric dyeing was conducted at room temperature for all steps and post-mordanted by using Alum. The colors of the dyed cotton fabrics were then measured and expressed according to CIELab color system. Furthermore, the color fastnest test results obtained by Stainning Scale and Grey Scale were found to be 4-5 by color differences of 2. These results showed that dyed cotton fabric give a good rank on color fastnest.   

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