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All Journal Agroindustrial Journal Matrik: Jurnal Manajemen, Strategi Bisnis, Dan Kewirausahaan
Dian Indriana
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Social Sciences

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Horizontal Biofilter System in Tapioca Starch Wastewater Treatment: The Influence of Filter Media on the Effluent Quality Nur Hidayat; Sri Suhartini; Dian Indriana
Agroindustrial Journal Vol 1, No 1 (2012)
Publisher : APTA and DTIP FTP UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.374 KB) | DOI: 10.22146/aij.v1i1.23243

Abstract

The aim of this research was to analyse the use of different filter media at laboratory scale under a horizontal biofilter system treating tapioca starch wastewater (TSW) to improve the effluent quality that met the national standard. The completely randomized design was used in this study. A horizontal biofilter system was designed and filled with filter media, include sand, gravel, soil (entisol type), coconut fibre and bamboo plait, in each unit. Prior feeding to the biofilter unit, TSW was inoculated with Bacillus sp. N-09. The TSW flow rate was maintained at 6 l d-1 and operated for 1-month period. The results showed that the use of sand as filter media gave a better performance in improving the TSW effluent quality followed by gravel, coconut fibre, soil and bamboo plait. The horizontal biofilter system packed with sand filter media removed 98.53 % BOD, 98.71 % COD, 88.96 % TSS, and increased pH to 8.0.
Behavioral Biases, Financial Literacy, and Female Investors: The Role of Social Media Vera Setyadi; Indarto Indarto; Dian Indriana
MATRIK: JURNAL MANAJEMEN, STRATEGI BISNIS, DAN KEWIRAUSAHAAN Vol. 19 No. 1 (2025)
Publisher : Faculty of Economics and Business Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MATRIK:JMBK.2025.v19.i01.p07

Abstract

The Indonesian capital market faces challenges in investor growth, particularly with low investment levels among women. Female investors lag behind men in both the number of investors and the value of investments. Despite an increase in the number of female investors, their investment values remain low, indicating limited active participation. This research aims to examine how financial literacy and behavioral biases influence Indonesian female investors decisions, with social media as a moderating variable. Using a sample of 126 female investors, the test was conducted with PLS-SEM. The results showed that regret aversion bias significantly negatively impacts female investors decisions, while financial literacy has a positive and significant effect. Overconfidence bias and herding behavior do not significantly influence investment decisions. Social media does not moderate the effects of these biases and financial literacy on investment decisions but could act as predictor moderation variable with significant positive impact on investment decisions.
Co-Authors Indarto - Nur Hidayat Sri Suhartini Vera Setyadi