Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Nani Harihastuti
Balai Besar Teknologi Pencegahan Pencemaran Industri
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Wet Scrubber Performance Optimization Application Assisted with Electrochemical-Based Ammonia Sensors Ikha Rasti Julia Sari; Januar Arif Fatkhurrahman; Bekti Marlena; Nani Harihastuti; Farida Crisnaningtyas; Yose Andriani; Nasuka Nasuka
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 10 No. 2 (2019)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2019.v10.no2.p36-42

Abstract

Crumb rubber is one of Indonesia’s agroindustry export commodities. This industry faces environmental problems due to their wastes, both liquid and air. The source of air pollution is commonly from drying process that emitted odor from its evaporation and heating phenomena. Industry uses wet scrubber technology as air pollution control from emitted odor from drying process. Preliminary identification in noncontrolled wet scrubber shown that wet scrubber efficiency around 47%. Low efficiency wet scrubbing process causes rain drop of water vapor around drying process. This research used electrochemical based sensor MICS 5524 as ammonia monitoring instrument, assisted with arduino as microcontroller to regulate water discharge through valve controlling scrubbing process. This electrochemical based sensor reads ammonia based on voltage reads by Arduino microcontroller. Ammonia reading then control scrubbing process by adjusting valve opening for spray water distribution. Wet scrubber efficiency increases to 66,96% due to water scrubbing control, also can save water utilization as high as 61,90%, followed by absence of rain drop contains ammonia around drying process area.
Pengaruh Waktu Kontak terhadap Daya Adsorpsi Karbon Aktif pada Proses Purifikasi CH4 dari Biogas Nani Harihastuti; Silvy Djayanti; Rame
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 7 No. 2 (2016)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2016.v7.no2.p57-66

Abstract

Direct utilization of biogas as a fuel often cause problems, i.e bad odor, metal corrosive, wall erosion and frequent fire extinguished. This is due to the presence of gas impurities in biogas such as H2S, NH3, CO2, H2, CO and water vapor (H2O), which will lower the value of calories from biogas and detrimental to the environment and health. The purpose of this research is to eliminate impurities gases, through a process called gas purification, until higher heat value of biogas is achieved. The methods were undertaken by adsorption process using activated carbon adsorbent with variable time contacts, to obtain the optimum adsorption power of activated carbon toward gas impurities that are present in wastewater. The results showed that removal/reduction of H2S of 99.99% was obtained from 4200 ppm to 0.22 ppm, NH3 removal reached 12.7%, from 94.96 ppm to 0.65 ppm, CO2 removal reached 77.48%, from 30,77% to 6.93%, water vapour (H2O) removal reached 97.95%, from 0.584 mg/L to 0.012 mg/L, which increased methane concentration (CH4) from 38.2% to 84.12%. This methane purification technology is renewable energy sources that is safe and environmentally friendly and also can be developed in other industries i.e tofu industries. The saturation of activated carbon adsorbents obtained after 48 hours. Adsorption of each impurities gas components by activated carbon are written as follows: 10.98 mg H2S/gram activated carbon/minute, 0.016 mg NH3/gram of activated carbon/minute, 0.090 CO2/gram activated carbon/minute.
High Performance of Enzymatic Bioprocess for Production of Biomassed-based Bioethanol of Sago Palm Fiber Waste Nani Harihastuti; Rame Rame; Silvy Djayanti
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 9 No. 2 (2018)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2018.v9.no2.p37-45

Abstract

Biomass waste in the form of fiber dregs contains many components of lignocellulose and hemicellulose. Lignocellulose can be used to produce ethanol through enzymatic biotechnology processes. Sago palm fiber industry is one potential industry producing biomass waste in the form of solid waste of fiber dregs (about 30% from the weight of processed raw materials). Solid fiber waste contains crude fiber and lignocellulose compound consists of cellulose (35-50%), hemicellulose ( 20-35%) and lignin (12-20%). This study aimed to utilize solid waste of sago palm fiber as a raw material of bioethanol production through enzymatic biotechnology processes of delignification, saccharification and fermentation which was then purified by distillation process to get ethanol. Delignification, saccharification, and fermentation stages are conducted using Phanerochaete chrysosporus Mushroom, Trichoderma viride fungus, and saccharomyces cerevisiae, respectively and then purified by distillation process (one level) to produce ethanol. The process of saccharification and fermentation process were done in an integrated manner (addition of Trichoderma viride and yeast saccharomyces cereviceae fungi done simultaneously). The weight of raw materials of solid waste fiber treated was about 6 kgs. Alcohol content obtained was about ± 4% (distillation). No water, air, and soil pollution inflicted, more added value, and sustainable were the main benefits of biotech process or bioprocess.
Influence of Operational Condition on the Performance of Halotolerant Enriched - Activated Sludge System for Treating Medium Salinity Peanut Roasted Wastewater Rustiana Yuliasni; Nanik Indah Setianingsih; Kukuh Aryo Wicaksono; Nani Harihastuti
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 9 No. 2 (2018)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2018.v9.no2.p46-54

Abstract

This research aimed to investigate the influence of operational condition on the performance of halotolerant enriched - activated sludge system for treating high organic wastewater with medium salinity from roasted peanut industry. Roasted peanut wastewater with VLR ranged from 0.268 to 4.7 kg COD/m3.day and Chloride concentration ranged between 1582 - 4392 mg/L was treated continuously for almost 77 days. Two identical reactor with Volume 25 L, namely R1 a conventional Activated Sludge (AS) System and R2, a halotolerant enriched-AS. Both reactors were running with operational condition: HRT (9 h to 46 h) and MLSS (1000-6000 mg/L). Compared to conventional AS system, Halotolerant enriched-Activated sludge system could remove average of 86.7% COD, compared with conventional AS which was 85.7%. Average COD effluent of Halotolerant Enriched-Activated Sludge was also considerably lower, which was 127 mg/L, than conventional AS which was 150 mg/L. Halotolerant enriched-activated sludge also produced less sludge, giving a high F/M ratio (4.9) compared with conventional AS (3.5). In order to make effluent fulfilled stream standard regulation (at central java region COD was<150 mg/L), the favorable operational condition for both reactors would be at VLR 0.268 to 2.03 kg COD, HRT was 25 hours HRT, with MLSS was 2584 – 3956 mg/L and maximum chloride concentration 1920 mg/L.
Co-Authors Bekti Marlena Farida Crisnaningtyas Ikha Rasti Julia Sari Januar Arif Fatkhurrahman Kukuh Aryo Wicaksono Nanik Indah Setianingsih Nasuka Nasuka Rame Rame Rame Rustiana Yuliasni Silvy Djayanti Yose Andriani