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All Journal JURNAL INTEGRASI PROSES Usroh: Jurnal Hukum Keluarga Islam Yurisprudentia: Jurnal Hukum Ekonomi
Sandy Wijaya
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Religion Humanities Economics, Econometrics & Finance Law, Crime, Criminology & Criminal Justice Other

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DISTILASI EKSTRAKTIF PADA PEMISAHAN ASETON DAN METANOL Yansen Hartanto; Herry Santoso; Sandy Wijaya; Andrew Mardone
JURNAL INTEGRASI PROSES VOLUME 6 NOMOR 4 DESEMBER 2017
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1408.227 KB) | DOI: 10.36055/jip.v6i4.2505

Abstract

Distilasi merupakan proses pemisahan yang banyak digunakan pada industri kimia. Akan tetapi pemisahan ini tidak bisa digunakan untuk campuran azeotropik. Untuk memisahkan campuran ini distilasi harus dimodifikasi dengan penambahan komponen lain (entrainer) seperti distilasi azeotropik heterogen dan distilasi ekstraktif. Selain itu distilasi juga bisa dilakukan dengan menggunakan dua tekanan yang berbeda seandainya titik azeotrop dipengaruhi oleh tekanan. Pada penelitian ini digunakan campuran aseton dan metanol di mana kedua komponen ini banyak dijumpai pada industri kimia karena banyak digunakan sebagai pelarut. Distilasi yang dikaji pada penelitian ini yaitu distilasi ekstraktif dan entrainer yang digunakan yaitu air. Penelitian ini bertujuan untuk menentukan variabel desain yang optimum seperti jumlah tahap kolom distilasi, lokasi umpan masuk dan lokasi entrainer masuk menggunakan Aspen Plus. Fungsi objektif yang diminimumkan yaitu penjumlahan biaya kapital dan biaya operasi yang dikenal dengan Total Annual Cost (TAC). Dari hasil penelitian ini diperoleh bahwa kondisi optimum diperoleh saat jumlah tahap kolom distilasi pertama sebesar 70, umpan masuk pada tahap ke-61, dan entrainer masuk pada tahap ke-30. Sedangkan desain optimum kolom distilasi kedua yaitu jumlah tahap 26 dan umpan masuk pada tahap ke-13.Kata Kunci: distilasi, azeotropik, entrainer, TAC. 
PERNIKAHAN DALAM MAHRAM MUSHAHARAH DI DESA MEKARJAYA KECAMATAN BUAY PEMACA KABUPATEN OKU SELATAN Annisa Nurbaiti; M Tamudin; Sandy Wijaya
Usroh: Jurnal Hukum Keluarga Islam Vol 5 No 2 (2021): Usroh
Publisher : Program Studi Al-Ahwal Al-Syakhshiyyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.04 KB)

Abstract

Marriage in mahram mushaharah is a marriage that is prohibited in Islam according to the word of Allah SWT. in Qs.An-Nisa verse 23 about mahram muabbad which means people who are forbidden to be married forever. However, marriages in this mushaharah mahram are still found in Mekarjaya Village, Buaypemaca District, South OKU Regency. This research is a field research that is conducting interviews and direct observations of the object of research using a qualitative approach. And supported by primary and secondary data sources. All the data is arranged systematically and then a conclusion is drawn in relation to the problem under study. Marrying a stepdaughter is not allowed under Islamic law, if there has been dukhul with his biological mother, as in the opinion of the majority of scholars. Meanwhile, Ibn Hazm has another opinion, namely that it is permissible to marry a stepdaughter even though there has been dukhul as long as the stepchild is not under the care of his stepfather. As Ibn Hazm has stated in his book Al-Muhalla bil Atsar that the cause of kemahraman between the stepchild and his stepfather if it has fulfilled two absolute conditions simultaneously, namely dukhul and hujur. If one of them is not fulfilled, then it cannot be said to be a mahram. So that his stepdaughter is lawful for his stepfather to marry. As in the case that the researcher has encountered, the marriage of Tejo and Tiwi when viewed from Ibn Hazm's opinion is legally permissible. While the marriage of Yanto and Yuna is not allowed/forbidden, both according to the opinion of the majority of scholars and Ibn Hazm.
Late Fines on Paylater Tiktok Services: A Review of Civil Law and a Compilation of Sharia Economic Law Yuswalina -; Sandy Wijaya; Kurnia Rahmawati
Yurisprudentia: Jurnal Hukum Ekonomi Vol 12, No 1 (2026)
Publisher : Universitas Islam Negeri Syekh Ali Hasan Ahmad Addary Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/yurisprudentia.v12i1.19808

Abstract

Advances in financial technology have driven the use of “pay-later” services on e-commerce platforms, including TikTok PayLater. However, the regulations regarding late payment penalties in these services raise academic questions due to differences in legal framework between the Civil Code (KUH Perdata) and the Compilation of Sharia Economic Law (KHES). This study aims to analyze the validity of applying late payment penalties on TikTok PayLater from the perspectives of civil law and Islamic economic law, as well as to identify the points of divergence in their regulations. The study employs a literature review (library research) using a normative legal approach. Primary data was obtained from the TikTok PayLater terms of service, while secondary data was sourced from legislation, the KHES, and relevant literature. The data were analyzed qualitatively using documentation techniques. The results indicate that a late payment penalty of IDR 80,000 per 25 days is justifiable under the Civil Code (KUH Perdata) pursuant to Article 1243, provided it is based on a breach of contract and has been validly agreed upon by the parties. Conversely, based on KHES, the legal relationship in such services is more appropriately classified as a qardh contract; thus, the imposition of penalties that provide additional benefits to the creditor has the potential to conflict with the principle prohibiting riba. From a Sharia perspective, penalties for late payment are only justified in the form of ta’widh as compensation for actual losses, not as an instrument that generates profit. Thus, this study confirms the existence of a discrepancy between the regulations on late payment penalties in civil law and Sharia economic law regarding the TikTok PayLater practice.
Co-Authors Andrew Mardone Annisa Nurbaiti Herry Santoso Kurnia Rahmawati Tamudin, M. Yansen Hartanto Yuswalina -