Economic and environmental analysis of spent bleaching earth reactivation

Author:

Handoko O T,Hasanudin U,Suroso E,Dermiyati D,Yuwono S D,Ginting S B,Sugiharto R,Indraningtyas L,Amelia J R,Iryani D A

Abstract

Abstract One of the stages in edible oil refining is bleaching, which aims to reduce pigments, gums and metals. Bleaching produces large amounts of spent bleaching earth (SBE) solid waste. SBE is usually treated in traditional processing such as landfill, incineration, compost or using the services of third-party. This paper investigated the best scheme for reactivation of SBE based on economic and environmental aspects. The basis of economic and environmental analysis used reactivated SBE with the best treatment, i.e. extraction of residual oil using n-hexane, thermal activation at 600°C for 60 minutes, acid activation using HCl 10% with impregnation BaCl2 5% (RBE-Ba) and without impregnation (RBE). BET analysis results of RBE-Ba and RBE were obtained with a pore surface area of 160 and 150 m2/gr, a total pore of 0.209 and 0.11 cc/gr, and a total pore size of 2.62 and 6.14 nm. The reactivation schemes being compared were build a new plant (NP) in an existing factory and build a new factory (NF). The most profitable scheme is RBE NP, with ROI is 20.97 % and PBP is 3.23 years. RBE NP is more economical because there is no need to buy new land, buildings, transportation, and low cost for chemicals and labour. NPV of RBE NP is USD 446,633.71, IRR is 15%, and B/C ratio is 53.31%. Based on environmental aspect, it can reduces air pollution resulting from SBE transportation, the risk of water and air contamination, and RBE will reduce the mining of bentonites to prevent environmental damage.

Publisher

IOP Publishing

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3