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All Journal Journal The Winners Proceeding Seminar LPPM UMP Tahun 2014 Binus Business Review Awang Long Law Review Jurnal Akuntansi dan Keuangan Indonesia Jurnal Rekayasa Proses
Titik Indrawati
Bina Nusantara University
Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Social Sciences

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Penurunan Kadar Cr (VI) Pada Limbah Cair Laboratorium Menggunakan Serbuk Besi Limbah Industri Elektroplating Indrawati, Titik; Puspawiningtyas, Endar
Proceeding Seminar LPPM UMP Tahun 2014 2014: Proceeding Seminar Nasional LPPM 2014, 20 Desember 2014
Publisher : Proceeding Seminar LPPM UMP Tahun 2014

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Abstract

Limbah cair yang dihasilkan dari kegiatan pengujian di laboratorium  mengandung logam Cr(VI) bersifat sangat toksik  dan berpotensi mencemari lingkungan. Untuk itu diperlukan suatu metode pengolahan yang sesuai dengan karakteristik limbah tersebut. Dalam penelitian ini dikaji penurunan kadar Cr(VI) menggunakan serbuk besi limbah industri electroplating. Tujuannya adalah untuk mendapatkan massa besi dan suhu optimum serta menentukan konstanta kesetimbangan adsorbsi menurut Freundlich dan Langmuir. Variabel bebas yang digunakan adalah massa besi dan suhu. Variasi massa besi yang digunakan yaitu 0,5 gr, 1 gr, 1,5 gr, 2 gr, 2,5 gr, sedangkan variasi suhu yaitu 30, 40 oC, 50oC dan 56oC. Variabel tetap yang digunakan adalah pH 2, waktu kontak 20 menit dan kecepatan pengadukan 120 rpm. Uji kadar Cr(VI) dilakukan dengan metode SNI 06-6989.53-2005. Dari hasil penelitian diketahui bahwa serbuk besi limbah elektroplating mampu menurunkan kadar Cr(VI) secara optimal pada penambahan massa besi sebanyak 2,0 yaitu  rata-rata sebesar 89,0% pada berbagai variasi suhu.  Suhu optimal yang dapat menurunkan kadar Cr(VI) yaitu suhu 56oC dengan prosentase 85,55%. Pada penelitian ini diperoleh konstanta kesetimbangan Freundlich, KF adalah 4,1570  dan n adalah 0,5685 dengan kesalahan 7,68%, sedangkan konstanta kesetimbangan Langmuir, qmax adalah -0,0434 dan bl adalah -6,4994 dengan kesalahan sebesar 3,81%.Kata kunci: kadar Cr(VI), limbah cair laboratorium, serbuk besi, konstanta kesetimbangan Freundlich dan Langmuir
Analisis Perbandingan Reksa Dana Saham Syariah dengan Reksa Dana Saham Konvensional Periode 2009–2012 Esha, Mulya Riyady; Heykal, Mohamad; Indrawati, Titik
Binus Business Review Vol 5, No 1 (2014): Binus Business Review
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/bbr.v5i1.1212

Abstract

The purpose of this study is to measure performance of sharia equity fund compared conventional equity fund and to find out whether the performance of sharia equity fund and conventional equity fund could outperform the market. The research method is annual return, risk adjusted return, and snail trail. The research object is equity fund that has been stated effective by Bapepam – LK before the research period. Result from this study is sharia equity fund has a better performance, a few of equity fund can outperform from the market, and the result of statistic test declares that there is not any different average performance of sharia equity fund and conventional equity fund with Significance level (0.05). Conclusion of the study is sharia equity fund have better performance and it could be compared with conventional equity fund.
Merger Bank Bermasalah di Indonesia Indrawati, Titik
Journal the Winners: Economics, Business, Management, and Information System Journal Vol 2, No 2 (2001): The Winners Vol. 2 No. 2 2001
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/tw.v2i2.3824

Abstract

The basic of problem for direction and senior manager bank is how to maximalize the value of share owner. It focus on how to make value by merger, how to get the value of bank target, and how to consider the nonfinancial influence the value by merger. The objective of the research wrap up the traveling’s merger and acquisition phenomenon in Indonesia. That objective are more focused on how merger can increase value, how to decide Bank’s value and the non financial parameter that can affact the sucsess of the merger comp. It’s concluded that Indonesian society see Bank merger as a final action to save a Bank from Bankcoruptcy. In negotiating the merger agreement, buyer and seller must consider the financial & non financial parameters.
DETERMINASI CAPITAL SRTUCTURE PADA PERUSAHAAN MANUFAKTUR DI BURSA EFEK JAKARTA PERIODE 2000 - 2004 Indrawati, Titik; Suhendro, Suhendro
Jurnal Akuntansi dan Keuangan Indonesia Vol. 3, No. 1
Publisher : UI Scholars Hub

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Abstract

This study attempts to analyze the determinants of capital structure in the Indonesian manufacturing industry from 2000 to 2004. Empirical hyphoteses, drawn from five independent variables are tested against a sample of 49 firms or a cross sectional data. The results show that only In total asset (size), net operating income (NOI), and return on asset (ROA) affect long-term debt to total asset (leverage). It finds a p'ositive relation between leverage and In total asset, a negative relation between leverage andprofitability (NOI and ROA). Delta sales (growth) and ownership structure have no effect on leverage. These findings are stable in 2000 through 2004
Study of chromium removal from wastewater using SSF-CW model: comparison between physical adsorption by coal CFA and phytoremediation by vetiver grass (Vetiveria Zizanioides L) Indrawati, Titik; Sarto; Prasetya, Agus
Jurnal Rekayasa Proses Vol 16 No 2 (2022): Volume 16, Number 2, 2022
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.69978

Abstract

The study aims to compare the effectiveness of chromium removal from water using adsorption by coal fly ash (CFA) and phytoremediation by vetiver grass (Vetiveria zizanioides L) as well as a combination of both CFA and vetiver grass. The experiment was carried out in four different reactors, having size of 100 cm (length) x 60 cm (wide) x 80 cm (height). One reactor was filled with gravel and CFA, without vetiver grass (RI), while another one was filled with gravel and vetiver grass, without CFA (RIV). The other two reactors were filled with gravel, CFA, and vetiver grass with the mass ratio of gravel/CFA of (25:2) and (25:1), denoted as RII and RIII, respectively. Fifty (50) L of synthetic wastewater containing 14.612 ppm of chromium was filled into the reactors and continuously recirculated for 15 days. Chromium accumulation in CFA and plants was analyzed on day 15. The results of plant development are indicated by the presence of new shoots and roots that grow during phytoremediation processes. In addition, there was an increase in weight and number of vetiver stems indicating the persistency of vetiver grass in such a harsh wastewater condition. The removal of Cr from wastewater in RI, RII, RIII and RIV at days 15 were 81%, 93.2%, 85.8% and 75.7%, respectively. It can be concluded that: (1) vetiver grass (Vetiveria zizanioides L) has high potential as phytoremediator plant, (2) Chromium adsorption by CFA plays important role in Cr removal from wastewater, and (3) combination of adsorption by CFA and a phytoremediation by vetiver grass significantly increases the removal of chromium from wastewater.
DISPUTE RESOLUTION OF DEFAULT OF CV KARYA PUTRA BERSAMA IN COAL PROCUREMENT AGREEMENT BETWEEN PT. TJIWI CHEMICAL PAPER MILL, TBK. AND PT. INDAH KIAT PULP & PAPER, TBK. Indrawati, Titik; Astutik, Sri; Subekti
Awang Long Law Review Vol. 7 No. 2 (2025): Awang Long Law Review
Publisher : Sekolah Tinggi Ilmu Hukum Awang Long

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56301/awl.v7i2.1493

Abstract

Contractual disputes due to breaches often occur in business relationships, including the case between CV. Karya Putra Bersama and the plaintiff. This study aims to analyze the legal basis and resolution process of breach of contract disputes and their impact on the parties. The research questions include the causes of the breach, dispute resolution steps, and court decisions. The study employs a normative juridical approach by analyzing contract documents, legal facts, and court rulings. Findings indicate that the defendant breached the contract due to delayed deliveries and violations of contractual commitments, leading to a court ruling requiring the defendant to pay penalties and damages. Furthermore, non-litigation efforts such as legal notices failed due to the defendant's lack of goodwill. This study emphasizes the importance of detailed contract drafting and optimizing non-litigation dispute resolution to prevent legal and financial losses.
Co-Authors Agus Prasetya Endar Puspawiningtyas, Endar Mohamad Heykal Mulya Riyady Esha, Mulya Riyady Sarto SRI ASTUTIK Subekti Suhendro Suhendro