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PENGARUH PRA-PERLAKUAN ADSORPSI KARBON AKTIF TERHADAP FOULING MEMBRAN ULTRAFILTRASI POLISULFON (UF-PSf) PADA PENYISIHAN BAHAN ORGANIK ALAMI (BOA) AIR GAMBUT Aulia Rahma; Mahmud mahmud
Jernih: Jurnal Tugas Akhir Mahasiswa Vol 1 No 2 (2018): JERNIH
Publisher : Prodi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jernih.v1i2.574

Abstract

Fouling merupakan salah satu kendala yang membatasi kinerja membran ultrafiltrasi (UF). Keberadaan Bahan Organik Alami (BOA) menjadi penyebab utama terjadinya fouling membran pada air gambut. Pra-perlakuan adsorpsi mampu menjadi solusi untuk mengurangi fouling dan meningkatkan performa membran UF polisulfon (UF-PSf). Penelitian ini bertujuan untuk menyelidiki pengaruh pra-perlakuan adsoprsi terhadap perubahan nilai fluks pada membran UF- PSf, dan menganalisis model pembentukan fouling yang paling tepat untuk menggambarkan proses hibrid adsorpsi dan UF-PSf. Proses hibrid adsorpsi dan UF-PSf dilakukan pada kondisi optimum dengan pH 4 dan dosis optimum Powdered Activated Carbon (PAC) 1040 mg/L pada tekanan 1-3 bar. Tekanan operasi terbaik terjadi pada tekanan 3 bar dengan nilai fluks permeat sebesar 85,064 L/m2.jam dan rejeksi BOA sebesar 85,24% (UV254) dan 85,07% (KMnO4). Modified Fouling Index (MFI) merupakan pemodelan yang tepat untuk menggambarkan pembentukan fouling pada proses hibrid adsorpsi dan UF-PSf pada penyisihan BOA air gambut. Tekanan 1 bar memiliki potensi fouling yang tinggi dengan nilai R2 sebesar 0,998.
Membran karbon templated silika dari karbon nipah (Nypa fruticans) untuk aplikasi desalinasi air rawa asin [Carbon templated silica membranes from nypa carbon (Nypa fruticans) applied for wetland saline water desalination] Muthia Elma; Mita Riani Rezki; Mahmud Mahmud; Sunardi Sunardi; Elsa Nadia Pratiwi; Era N R Oktaviana; Siti Fatimah; Aulia Rahma
Jurnal Riset Industri Hasil Hutan Vol 12, No 2 (2020)
Publisher : Kementerian Perindustrian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24111/jrihh.v12i2.6543

Abstract

Nypa carbon templated into silica matrices is an innovation to enhance inorganic silica membrane robustness. Performance of the membrane will be more  stable during application for desalination process. This research aims to investigate silica-nypa membrane performance for   desalination of wetland saline water. Silica-nypa was fabricated by carbon templated which obtained from nypa fruticans leaves and mixed into silica sol by  sol-gel method. Support membrane was coated into  silica-nypa sol by dip-coater and calcined via rapid thermal processing (RTP) technique. Silica-nypa membrane applied for  wetland saline water desalination via pervaporation. The results showed that silica membrane performed the highest water flux by adding nypa 2.5 wt% calcined at 350°C (1.008 kg m-2h-1). Carbon from nypa offered great effect to silica membrane performance. Furthermore, all membranes had high salt rejection >98%. Therefore, carbon template silica membrane from nypa was successfully fabricated and  applied for wetland saline water desalination.
PENGEMBANGAN BAHAN AJAR BUKU SAKU MATEMATIKA BERBASIS PENDIDIKAN KARAKTER MATERI TRIGONOMETRI Budi Cahyono; Dian Tsani; Aulia Rahma
Phenomenon : Jurnal Pendidikan MIPA Vol 8, No 2 (2018): Jurnal Pendidikan MIPA
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/phen.2018.8.2.2929

Abstract

This development research is motivated because students need practical teaching materials when studied in class or outside the classroom. Religious characteristics and politeness of low students demand to reduce character values in teaching materials, so as to improve learning achievement and improve the character's value of participants student. This research is a type of R D research with the procedure for developing pocket books using the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The subject of this study was the students of MA Sunan Katong class X with data analysis techniques using descriptive qualitative and quantitative. Based on the results of the study it can be concluded that mathematical pocket books based on character education on trigonometry material are feasible to use. Test the validity by evaluating the validator included in the valid category but needs to be slightly revised with an average percentage of 70.80%. The response of students to pocket books is included in the excellent category with a percentage of 86.60%. The results of the t-test get the result t_count = 2,248 t_table = 1,668 then H_1 is accepted. This means that the class average using mathematical pocket books based on character education is better than those that do not use pocket books. The n-gain score is 0.34. This shows that learning uses a pocket book of trigonometry based on character education to effectively improve the character education of students in the medium category.
PENGARUH PROFITABILITAS, LIKUIDITAS, UMUR PERUSAHAAN, UKURAN PERUSAHAAN DAN RISIKO BISNIS TERHADAP STRUKTUR MODAL PADA PERUSAHAAN MAKANAN, MINUMAN DAN TEMBAKAU BURSA EFEK INDONESIA PERIODE 2012 – 2017 Aulia Rahma; Ahmad Muslim; Febria Nalurita
PROSIDING SEMINAR NASIONAL CENDEKIAWAN PROSIDING SEMINAR NASIONAL CENDEKIAWAN 2019 BUKU II
Publisher : Lembaga Penelitian Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/semnas.v0i0.5851

Abstract

Tujuan dari penelitian ini adalah untuk menguji dan menganalisis pengaruh empiris profitabilitas, likuiditas, umur perusahaan, ukuran perusahaan dan risiko perusahaan terhadap struktur modal. Metodologi penelitian ini menggunakan purposive sampling. Jumlah sampel adalah 20 perusahaan. Tujuan dari tes ini adalah untuk membuktikan pengaruh variabel independen terhadap variabel dependen. Penelitian ini menggunakan model data panel dan diolah menggunakan eviews 9. Hasil penelitian ini menunjukkan bahwa profitabilitas, likuiditas, ukuran perusahaan berpengaruh signifikan terhadap utang jangka panjang. Sementara profitabilitas, likuiditas, umur perusahaan, ukuran perusahaan berpengaruh signifikan terhadap utang jangka pendek. Sedangkan umur perusahaan, risiko bisnis tidak berpengaruh terhadap utang jangka panjang dan risiko bisnis tidak berpengaruh terhadap utang jangka pendek. 
Penyidikan Tindak Pidana Penyelundupan Manusia Oleh Direktorat Reserse Kriminal Umum Polisi Daerah Riau Aulia Rahma; Erdianto '; Widia Edorita
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Hukum Vol 4, No 1 (2017): Wisuda April 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Ilmu Hukum

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

People smuggling occurred in the city of Pekanbaru, this is because Pekanbaru a place where the border regions directly adjacent to some neighboring countries. Such as Malaysia and Singapore, so it becomes a shortcut or transit for people smuggling. people smuggling that occurred during this the Regional Police Pekanbaru city. The Regional Police Pekanbaru city in 2013 that managed to arrest two suspects and took fourteen foreign nationals who comes from Afganistan and Pakistan, in 2014 that managed to arrest five suspects and took twenty one foreign nationals who comes from Afganistan and Pakistan more. In 2015 that took twenty six foreign nationals who come from Afganistan and Myanmar.Who comes from the land.This type of research is quite sociological research, because in this study the autors directly conduct research on location or places studied in order to give a complete and clear picture of problems examined. This research was conducted at the Regional Police in Pekanbaru, while the sample population is a whole party with regard to the issues examined in the study. The source of the data used primary data and secondary data, while data collecting technique in this research is done with interviews and study data using deductive method is to analyze the problems of general nature subsequently with drawn padfa specific conclusion basic on existing theories.Result of the research this paper is : first, Invistigation of the crime people smuggling in the region Pekanbaru town in handling the Regional Police is not yet optimal, secondly, cost constraints, the infrastructure facilities, the victim, the lack of public knowledge about the crime of people smuggling, and the need translator for their investigation process, third efforts in dealing with the crime of people smuggling is effective and efficient in handling criminal cases of people smuggling with doing additional costs, complementary facilities and infrastructure, protection of victims, made approaches to community related dangers the crime of people smuggling, and the need for translator for investigation the crime of people smuggling.Key words : Invistigation-People Smuggling-Victim
ASESSMEN PERKEMBANGAN SOSIAL EMOSIONAL ANAK DI RA ASSYAFIIYAH MADA JAYA LAMPUNG Aulia Rahma
QURROTI : JURNAL PENDIDIKAN ISLAM ANAK USIA DINI Vol 2, No 1 (2020): April 2020
Publisher : STPI Bina Insan Mulia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (775.224 KB) | DOI: 10.36768/qurroti.v2i1.99

Abstract

UPAYA PENINGKATAN MANAJEMEN SUMBER DAYA MANUSIA DI TK AR-RAIF, KALASAN SLEMAN, YOGYAKARTA Aulia Rahma
QURROTI : JURNAL PENDIDIKAN ISLAM ANAK USIA DINI Vol 2, No 2 (2020): Oktober 2020
Publisher : STPI Bina Insan Mulia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (741.135 KB) | DOI: 10.36768/qurroti.v2i2.132

Abstract

APLIKASI MEMBRAN SILIKA-PEKTIN UNTUK DESALINASI AIR PAYAU Muthia Elma; Mahmud Mahmud; Akhbar Akhbar; Lilis Suryani; Fitri Ria Mustalifah; Aulia Rahma; Dhiyaur Rahmah; Nur Baity
Jukung (Jurnal Teknik Lingkungan) Vol 6, No 1 (2020): MARET 2020
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.241 KB) | DOI: 10.20527/jukung.v6i1.8233

Abstract

Di Indonesia khususnya Kalimantan Selatan, sumber air yang digunakan kebanyakan adalah air sungai. Namun saat kemarau seperti bulan juli-agustus, air sungai banyak yang telah tekontaminasi air laut yang menyebabkan air menjadi asin akibat intrusi air laut. Salah satu teknologi yang dapat digunakan untuk memisahkan garam terlarut yang ada adalah dengan menggunakan teknologi membran dengan proses desalinasi. Membran yang digunakan adalah membran silika. Namun silika memiliki hidrostabilitas yang rendah sehingga perlu disisipkan dengan karbon yang terbuat dari pektin limbah kulit pisang agar memperkuat struktur pori maupun hidrostabilitas membran itu sendiri agar menambah kekuatan membran untuk menyaring kandungan garam yang ada pada air rawa asin. Tujuan dari penelitian ini adalah mengetahui kinerja dari membran silika-pektin pisang dengan proses sintesis membran 4 layer (Konsentrasi pektin 0,1% dengan suhu kalsinasi 300 oC dan 400 oC dengan teknik RTP (Rapid Thermal Processing) menggunakan metode pervaporasi (PV) serta air laut artifisial sebagai air umpan (NaCl 0,3 wt%) dengan suhu ruang (25 0 C).  Diperoleh hasil penelitian konsentrasi pektin 0,1 % dengan suhu kalsinasi 300 oC dan 400 oC adalah berturut-turut 5,45 dan 13,70 Kgm-2h-1. Sementara itu, nilai rejeksi kedua membran ini berturut-turut 91,94 % dan 92,08. Jadi,  kinerja kedua membran silika pektin tersebut yang paling baik adalah pada suhu kalsinasi 400oC untuk deslinasi air asin. Kata kunci : Air asin, desalinasi, membran silika-pektin, pervaporasi. In Indonesia, especially South Kalimantan, the source of water used is mostly river water. But during the dry season like July-August, many river water has contaminated sea water which causes the water to become salty due to sea water intrusion. One technology that can be used to separate existing dissolved salts is to use membrane technology with the desalination process. The membrane used is the silica membrane. However, silica has low hydrostability so it needs to be inserted with carbon made from pectin from banana peel waste in order to strengthen the pore structure and membrane hydrostability itself in order to increase the strength of the membrane to filter out the salt content in salt marsh water. The purpose of this study was to determine the performance of the banana silica-pectin membrane with a 4 layer membrane synthesis process (pectin concentration of 0.1% with calcination temperature of 300 oC and 400 oC with RTP (Rapid Thermal Processing) technique using pervaporation (PV) method and water artificial sea as feed water (NaCl 0.3 wt%) with room temperature (25 oC) .The results of the study were 0.1% pectin concentration with calcination temperature of 300 oC and 400 oC were respectively 5.45 and 13.70 Kgm-2h-1. Meanwhile, the rejection values of the two membranes were 91.94% and 92.08, respectively, so the best performance of the two pectin silica membranes was at calcination temperature of 400oC for saltwater deslination. Keywords: Desalination, pervaporation, salt water, silica-pectin membrane.
PENGGUNAAN MEDIA AUDIO VISUAL DALAM MENGEMBANGKAN KEMAMPUAN BAHASA LISAN ANAK DI RA ASSYAFI’IYAH MADA JAYA WAY KHILAU PESAWARAN Aulia Rahma; Febrianty Razuba; Mhd Habibu Rahman
EARLY CHILDHOOD : JURNAL PENDIDIKAN Vol. 4 No. 1 (2020): Early Childhood: Jurnal Pendidikan
Publisher : Pendidikan Guru PAUD, FKIP, Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/earlychildhood.v4i1.806

Abstract

Perkembangan kemampuan bahasa lisan anak dapat dikembangkan dengan berbagai media. Salah satunya yaitu menggunakan media audio visual dengan cerita vidio yang di aplikasikan melalui laptop. Penelitian ini bertujuan untuk mengetahui bagaimanakah penggunaan media audio visual dalam mengembangkan kemampuan bahasa anak di RA Assyafi’iyah Mada Jaya Way Khilau Pesawaran. Penelitian ini merupakan penelitian deskriptif kualitatif, dengan subjek penelitian adalah kelompok B di RA Assyafi’iyah yang terdiri dari 15 orang anak. Teknik pengumpulan data dengan observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukan bahwa penggunaan media audio visual telah dilaksanakan kurang baik. Dengan kurangnya alat bantu LCD dan proyektor sehingga penyampaian video kurang maksimal dan guru kurang komunikatif terhadap anak. Pada hasil observasi penggunaan media audio visual menggunakan langkah-langkah sebagai berikut: Guru mempersiapkan RPPH sesuai dengan tema yang akan diajarkan, guru mengatur dan menyiapkan peralatan media yang digunakan, guru memperhatikan posisi duduk peserta didik dalam keadaan nyaman, guru mengajak anak untuk menyimak video dan menjelaskan tujuan pembelajaran, guru memastikan anak telah siap menyaksikan tayangan video, guru melakukan evaluasi. Maka semua indikator perkembangan kemampuan bahasa lisan dapat berkembang sesuai harapan, dari keenam langkah-langkah penggunaan media audio visual yang di terapkan oleh guru di RA Assyafi’iyah Mada Jaya Way Khilau Pesawaran dapat menjadi alternatif dalam mengembangkan kemampuan bahasa lisan anak usia dini. Kata kunci; Media Audio Visual, Kemampuan Bahasa lisan.
Verification of the Walkley Black Method Test for Determination of Organic Carbon Elements in Palm Oil Empty Fruit Bunch Waste Fertilizer Wakhid Khoirul Umar; Fandika Agustiyar; Aulia Rahma
Eksergi Vol 19, No 3 (2022)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v19i3.7267

Abstract

Verification of the organic carbon method on organic fertilizer from Palm Oil Empty Fruit Bunches (TKKS) waste using a UV-Vis Spectrophotometer has been carried out. The determination of this OPEFB fertilizer refers to the AOAC (2000) with the Walkley Black method. The results of the organic carbon test on OPEFB fertilizer show the correlation coefficient (r) value obtained is 1.0000, and the % relative standard deviation (RSD) value of 0.4022% means that the value is below 2/3 CV Horwitz of 4.7230. accuracy with a value of 106.99%. The method limit value (LOD) is 2.4531, and the quantization limit value (LOQ) is 8.1769. The instrument limit value (LOD) is 2.4990, and the quantification limit value (LOQ) is 8.3299; the test results indicate that it has complied with the conditions with acceptance. The test results for determining organic carbon in OPEFB fertilizer using the Walkley Black method with UV-Vis Spectrophotometer showed valid results, so the method could be used.