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PENGEMBANGAN PROSES OKSIDASI TINGKAT LANJUT MENGGUNAKAN FOTOKATALIS TiO2 DENGAN PENAMBAHAN H2O2 UNTUK PENGOLAHAN LIMBAH CAIR INDUSTRI PERTAMBANGAN BATUBARA Marhaini, Marhaini; Wibowo, Hendra Satria
Jurnal Distilasi Vol 1, No 1 (2016): Jurnal Distilasi
Publisher : Universitas Muhammadiyah Palembang

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Abstract

Pencemaran lingkungan yang diakibatkan oleh methylen blue dapat menggangu kesehatan lingkungan. Proses pengolahan limbah methylen blue diteliti dengan menggunakan proses elektrokoagulasi. Proses elektrokoagulasi menggunakan reaktor batch dengan volume 1 liter dengan voltase 12 volt dan 5 A dan jarak antar plat adalah 2 cm. Elektroda yang digunakan adalah besi dan alumunium dengan konfigurasi Fe-Fe (katoda) Al-Al (anoda), Fe (katoda) Al-Al-Al (anoda), Fe-Fe-Fe (katoda) Al (anoda), Al-Al (katoda) Al-Al (anoda), dan Fe-Fe (katoda) Fe-Fe (anoda). Hasil penelitian menunjukkan bahwa konfigurasi Fe Al-Al-Al menhasilkan laju penurunan konsentrasi methylen blue lebih tinggi dibandingkan dengan susunan konfigurasi elektroda yang lain. Kinetika elektrokoagulasi menunjukkan bahwa laju penurunan konsentrasi methylen blue berlangsung pada orde 2
PENGEMBANGAN PROSES OKSIDASI TINGKAT LANJUT MENGGUNAKAN FOTOKATALIS TiO2 DENGAN PENAMBAHAN H2O2 UNTUK PENGOLAHAN LIMBAH CAIR INDUSTRI PERTAMBANGAN BATUBARA Marhaini, Marhaini; Wibowo, Hendra Satria
Jurnal Distilasi Vol 1, No 1 (2016): Jurnal Distilasi
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jd.v1i1.904

Abstract

Pencemaran lingkungan yang diakibatkan oleh methylen blue dapat menggangu kesehatan lingkungan. Proses pengolahan limbah methylen blue diteliti dengan menggunakan proses elektrokoagulasi. Proses elektrokoagulasi menggunakan reaktor batch dengan volume 1 liter dengan voltase 12 volt dan 5 A dan jarak antar plat adalah 2 cm. Elektroda yang digunakan adalah besi dan alumunium dengan konfigurasi Fe-Fe (katoda) Al-Al (anoda), Fe (katoda) Al-Al-Al (anoda), Fe-Fe-Fe (katoda) Al (anoda), Al-Al (katoda) Al-Al (anoda), dan Fe-Fe (katoda) Fe-Fe (anoda). Hasil penelitian menunjukkan bahwa konfigurasi Fe Al-Al-Al menhasilkan laju penurunan konsentrasi methylen blue lebih tinggi dibandingkan dengan susunan konfigurasi elektroda yang lain. Kinetika elektrokoagulasi menunjukkan bahwa laju penurunan konsentrasi methylen blue berlangsung pada orde 2
Pengolahan Limbah Cair Minyak Bumi Secara Adsorpsi Menggunakan Karbon Aktif Kulit Singkong Marhaini Marhaini; Sri Martini; Khairil Iksani
TEKNIKA Vol. 15 No. 1 (2021): Teknika Januari - Juni 2021
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.7325341

Abstract

Minyak dan gas bumi merupakan salah satu sumber energi utama yang digunakan dalam aktifitas industri, transportasi dan rumah tangga. Keadaan tersebut mengakibatkan peningkatan produksi dan konsumsi minyak bumi yang berdampak langsung pada meningkatnya limbah cair minyak bumi yang dihasilkan. Dengan demikian, dibutuhkan teknologi pengolahan limbah cair yang efektif dan efisien serta ramah terhadap lingkungan. Dalam penelitian ini, limbah kulit singkong dimanfaatkan sebagai bahan baku pembuatan karbon aktif, yang akan dipergunakan sebagai adsorbent untuk menurunkan kadar minyak, BOD5, COD, sulfida dan amonia dalam limbah cair dengan waktu kontak sebagai variabel tetap utama. Data experimen menunjukan bahwa karbon aktif dari kulit singkong dapat meningkatkan kualitas limbah cair minyak bumi, di mana waktu kontak antara adsorben dan sampel limbah cair berpengaruh pada penurunan konsentrasi polutan hingga mencapai efisiensi penurunan sebesar 36.95, 10, 7.93, 37.5, dan 30.8 % untuk  minyak lemak, BOD5, COD, sulfide dan ammonia secara berturut – turut dengan waktu kontak selama 30 jam.
Pelatihan Penggunaan Mmicrosoft Office Bagi Guru SMP Al-Hamidiyah Palembang Masayu Rosyidah; Marhaini Marhaini; Reny Kartika Sary; Febi Ardianto; Yosi Apriani
Jurnal Abdimas Madani dan Lestari (JAMALI) Volume 01, Issue 02, September 2019
Publisher : UII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jamali.vol1.iss2.art3

Abstract

The teacher is a professional educator with the task of educating, teaching, guiding, directing, training, assessing, and evaluating students in early and secondary education in certain formal institutions. One of the problems faced by Al-Hamidiyah Middle School teachers is the low competency of teachers, especially in the use of computer technology devices. This is unfortunate, even though the demands on teachers' assignments are in line with the enactment of the 2013 curriculum, where teachers are required to work using applications, learning media using information technology, application-based assessment systems, computer-based national exams, and others. This obstacle occurs because there is still a lack of teacher motivation to add competence outside the main task for a variety of reasons conveyed. The approach used in this dedication activity with a persuasive-educative approach, by providing knowledge, understanding, and skills in using Microsoft Office. The method used in the form of lectures, practice, and discussion. The results of this dedication the teacher understands and is able to practice directly.
Training on Introduction to Platforms and Utilization of Social Media in Online Business for MSME Actors Students of SMK Alwashliyah 2 Simalungun Regency Beby Karina Fawzeea Sembiring; Marhayanie Marhayanie; Marhaini Marhaini; Syafrizal Helmi Situmorang; Tetty Yuliaty
Budapest International Research and Critics Institute (BIRCI-Journal): Humanities and Social Sciences Vol 4, No 1 (2021): Budapest International Research and Critics Institute February
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v4i1.1690

Abstract

Given the blossoming essence of social media marketing, literature does not delve into the complexities and consequences of small and medium-sized enterprises (SMEs). This paper seeks to advance awareness and provide an extensive analysis of the inspiration and efficiency benefits of social media provided by small and medium-sized businesses through a digital economy analysis. The conceptual analysis shows that interactivity, compatibility, and cost-effectiveness are reasons for social media use, ultimately providing advantages. SMEs of Facebook and Twitter profiles are used to analyze the conceptual paradigm suggested. This research reveals that the interdependencies of social media's motives and the consequences of social media use are optimistic but sporadic across small and medium-sized companies. SMEs selling physical goods prefer to use social media on cost-effective motivations, whereas small and medium-sized businesses tend to see interactivity as the main incentive. Furthermore, the study results indicate that Facebook and Twitter in a two-site story generate success gains for small and medium-sized enterprises' users. The study offers future analysis and management priority problems that strongly affect the academic and practice culture. Obviously, despite any bottlenecks in use, SMEs in developing markets tend to reap expanded social media gains through multi-platform marketing activities. 
PEMBERDAYAAN IBU-IBU PKK DALAM PELATIHAN PEMBUATAN DECOUPAGE BERBASIS INDUSTRI KREATIF Wisudawati, Nidya; Marhaini; Mardwita; Patradhiani, Rurry; Hastarina, Merisha
Jurnal Abdimas Musi Charitas Vol. 5 No. 1 (2021): Jurnal Abdimas Musi Charitas Vol. 5 No. 1, Juni 2021
Publisher : Universitas katolik Musi Charitas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.513 KB)

Abstract

This training aims to increase the economic independence of housewives in RT 030 RW 007,Kalidoni Village, Palembang. The implementation of this activity is packaged interactively bypresenting lecturers from the Faculty of Engineering, University of MuhammadiyahPalembang. The form of service activities is in the form of decoupage technique training, thistechnique is a technique of beautifying ordinary items into good products, artistic value andhigher selling value. The material used is plain woven bag material which is then decoupagetechnique (from French which means cutting, decorating), affixed with motif tissue paper(napkin) followed by varnishing, will produce a beautiful woven bag. This skill is quite easy butrequires precision and gentleness because the tissue paper used is very smooth and easily torn ifyou are not careful in cutting, pasting and varnishing. Not only training, but in this activity,online business counseling is also held through the marketplace and social media. An effectivesolution for mothers of productive age but do not work outside the home. Overall, theimplementation of activities can provide new business opportunities for housewives.
Pengaruh Aditif Limbah Kerang Darah (Anadara Granosa) Terhadap Kualitas Beton K-225 Dian Kharismadewi; Muhammad Afrizal Pelantika; Marhaini Marhaini
Jurnal Inovator Vol 5 No 2 (2022): Optimalisasi Proses Manufaktur
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/ji.v5i2.225

Abstract

Pesatnya perkembangan bidang konstruksi beton mengakibatkan peningkatan kebutuhan bahan baku pembuatan beton yang didapatkan langsung dari alam. Kebutuhan akan material yang ramah lingkungan juga meningkat seiring dengan perkembangan teknologi bidang konstruksi, sehingga berbagai penelitian dilakukan untuk mencari alternatif bahan baku tambahan atau campuran pembuatan beton. Pemanfaatan limbah kerang darah (Anadara granosa) menjadi salah satu alternatif bahan yang dapat digunakan untuk dalam campuran beton yaitu sebagai salah satu material pengganti agregat kasar. Pada penelitian ini, cangkang kerang darah sebanyak 10% dan 13% ditambahkan pada campuran beton normal dan diaging hingga 28 hari, dan kemudian dianalisa karakteristik dan kuat tekannya. Dari hasil analisa didapatkan terjadi peningkatan kuat tekan beton hingga 103,67% atau 233,47 Kg/cm2 dengan penambahan 10% cangkang kerang darah pada campuran beton normal, sedangkan penambahan lebih dari 10% dapat menurunkan kuat tekan beton. Hasil karakterisasi Scanning Electron Microscopy menunjukkan struktur permukaan beton yang memiliki banyak pori dengan permukaan yang relatif kasar dengan adanya penambahan cangkang kerang darah. Dari hasil analisa dapat disimpulkan bahwa cangkang kerang darah dapat digunakan sebagai bahan tambahan beton dengan jumlah penambahan maksimum 10% dari berat keseluruhan beton normal.
Analisa Efesiensi Bahan Bakar Dan Dampak Lingkungan Emisi Gas Buang Pembangkit Listrik Tenaga Diesel (Pltd) Terhadap Pembangkit Listrik Mesin Gas (PLTMG) marhaini, marhaini; Mardwita, Mardwita; Suranda, Arief
JURNAL SURYA ENERGY Vol 6, No 2 (2022)
Publisher : UNIVERSITAS MUHAMMADIYAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jse.v6i2.4215

Abstract

The need for electrical energy is a primary human need at this time, the need for electricity is almost a necessity for both industry, offices, and the general public. The main problem of the power generation industry today is the use of oil as fuel for power generation which will increase the cost of electricity production. One of the government's efforts to reduce the use of fuel oil is to use oil fuel with the consideration that natural gas is more effective and efficient, its use is more practical and its emissions are more environmentally friendly when compared to solar power. From these problems arose the idea of calculating the efficiency between a diesel-fired power plant (PLTD) and a gas engine power plant (PLTMG) powered by LNG (Liquedfied Natural Gas) and the resulting emission measurement results. The study conducted an efficiency analysis by carrying out a 50% and 75% load test of installed capacity and analyzing its environmental friendliness by taking the emission test results.
Korean Wave Cultural Influence And Fan Entrepreneurship Behaviortowards Entrepreneurial Interests (Case Study On S1 Management Student, USU Faculty of Economics And Business) Masturah, W Fildzah; Qaedi Hutagalung, Arif; Marhaini; Qamariah, Inneke
Journal Of Management Analytical and Solution (JoMAS) Vol. 1 No. 1 (2021): Journal Of Management Analytical and Solution
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.108 KB) | DOI: 10.32734/jomas.v1i1.5241

Abstract

The purpose of this study was to determine whether there is a positive and significant influence simultaneously   or   partially   on   Korean   Wave   culture   and   Fan   Entrepreneurship   behavior   on entrepreneurial interest in undergraduate (S1) students of Management, Faculty of Economics and Business, University of North Sumatra. The subjects of this study were undergraduate students (S1) in Management, Faculty of Economics and Business, University of North Sumatra from 2016 to 2019. The sample used was all 90 students. The dependent variable in this research is entrepreneurial interest (Y), while the independent variable includes Korean Wave culture (X1) and Fan Entrepreneurship behavior (X2). The data collection method used a questionnaire. The data analysis technique used descriptive statistical analysis, multiple regression analysis, F test, t test, and the coefficient of determination (R2). The results showed that Korean Wave culture and Fan Entrepreneurship behavior had a positive and significant effect on interest in entrepreneurship.  Korean Wave Culture and Entrepreneurship Fan Behavior have an effect of 29.4 percent simultaneously.
Numerical Alpha Archive Training System in Accordance with the Archival Code for High School Teachers in Medan City Juliaty, Tetty; marhaini; Situmorang, Syafrizal Helmi; Sembiring, Beby Karina Fawzeea; Pandia, Komariah
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.986 KB) | DOI: 10.32734/abdimastalenta.v4i2.4379

Abstract

Poor management of archives has the potential to cause loss and damage to records or documents. And cause difficulty finding back important archives such as securities. Not a few administrative staff and officials need a lot of time to find back the archived files. Poor archival storage and management are common in companies, including schools. Mulia Medan Private Vocational School, one of which is still not doing the archiving system correctly, where the storage system is not in accordance with the archival rules. Unfortunately, it is difficult for teachers to get the latest archival training, even since 13 years ago when schools were owned by regional autonomy, the gap between regional teachers' competencies and those at the center was farther. Regions are difficult to get the latest competency training in their fields. Then the lack of local government budget funds, schools and also related individuals becomes even more complex problems. Therefore the need for the latest archival training according to the rules has been very urgent especially for vocational teachers in the city of Medan, to prepare graduates who are ready to work. Administrative staff also need to gain competency in the archiving of alphanumeric systems in accordance with the rules of archiving and standards. For this purpose, teachers and administrative staff need to be given training and mentoring, and the results can be seen as a significant improvement in the ability and skills in organizing records after participating in training. The alphanumeric archive storage system is very helpful for schools in arranging archives according to RI rules. For this reason, adequate facilities and infrastructure are needed in schools, so that the support of school principals in the application of proper and proper records management is urgently needed so that teachers and administrative staff can realize them immediately at school.