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All Journal BERITA BIOLOGI JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Zona Ekasakti Jurnal Penelitian dan Pengabdian (EJPP) Journal of Scientech Research and Development TOFEDU: The Future of Education Journal
Hendra Anwar
Jurusan Teknik Lingkungan, Fakultas Tekknik, Universitas Nahdlatul Ulama Sumatera Barat
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Public Health Social Sciences Other

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Pengaruh variasi konsentrasi terhadap sifat listrik lapisan tipis CoFe2O4 Hendra Anwar; Jepri Limbong; Hary Sanjaya
Jurnal Zona Vol 6, No 1 (2022)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v6i1.54

Abstract

A thin layer is a very thin layer of material (organic, inorganic metal or a mixture of organic metals) which has the properties of a conductor, a semiconductor, a superconductor or an insulator. CoFe2O4 nanoparticles are very popular materials to be developed in the field of electricity and magnetism because they have cubic magnetocrystalline properties and high coercivity properties, as well as medium saturation magnetization. Sol-gel is one of the techniques in the manufacture of thin films that involves chemical processes in the form of hydrolysis and condensation reactions. Sol-gel dip coating is a technique for making a thin layer that has several advantages, namely a simple method, easy, few precursors so that it saves production costs and does not damage the environment. XRD test results of a 0.20 M CoFe2O4 thin layer found a peak in the 2Ө 18.1152 region with a diffraction pattern (111). The highest UV-Vis absorbance peak at a wavelength of 285 nm was 2.5423 A and the lowest bandgap value was 2.79 eV. The resistance value is 6.46 and the resistivity value is 0.00016225 m. 
THE DIVERSITY OF BUTTERFLY IN AIR DINGIN LANDFILLS, BALAI GADANG, PADANG CITY Leila Muhelni; Hendra Anwar
BERITA BIOLOGI Vol 19, No 2 (2020)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v19i2.3788

Abstract

The study of butterfly in the in Air Dingin Landfills needs to be carried out to find out what types of butterflies are in this area and how their diversity is, given the increasing area of Landfills that will change the surrounding environment into a place of rubbish heap. The study was conducted by implementing survey method with insect net. The collection of butterflies was carried out in 2 periods (2x6 = 12 days) in April-June 2019 during sunny weather from 09:00 – 12:00 of Western Indonesian Time. All butterflies were collected at ±5 m distance from the collector. The data was analysed to calculate abundance, relative abundance, frequency of the presence of butterfly, and determine diversity was conducted by using the Shannon-Wiener Index and Evenness index. The results obtained 5 families, 14 genera, 22 species, and 220 individuals consisting of 122 males and 98 females. The diversity index value obtained was 2.27 and categorised as the medium category it is mostly because, as assumed, the environmental conditions of the Air Dingin Landfills were still in good condition. 
KINETIKA TRANSPOR FENOL MELALUI MEMBRAN KLOROFORM DALAM TEKNIK MEMBRAN CAIR FASA RUAH Mistia Sari; Hendra Anwar
Journal of Scientech Research and Development Vol 4 No 2 (2022): JSRD, December 2022
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v4i2.72

Abstract

Penelitian tentang kineka transpor fenol melalui membran kloroform dalam teknik membran cair fase ruah telah dilakukan. Proses kinnetika ditentukan dengan mengukur kosentrasi fenol yang tersisa di fasa sumber dan yang sampai ke fasa penerima perwaktu, dan dimonitor dengan Spektrofotometer UV/VIS pada panjang gelombang 510 nm. Kondisi percobaan diatur berdasarkan kondisi optimum yang telah diperoleh oleh penelitian sebelumnya, di mana fasa sumber mengandung 6 mL fenol 2,13 x 10-4M pH 2, fasa membrane merupakan 30 mL kloroform dan fasa penerima 12 mL NaOH 0,1 M. dari hasil percobaan menunjukkan, pada temperatur 304 0K system transpor fenol memenuhi reaksi konsekutif irrevesibel orde pertama. Konstanta kecepatan transpor fenol masuk membran (k1) adalah 0,046 menit- dan konstanta kecepatan transport fenol keluar membran (k2) adalah 0,054 menit dan energi aktivasi sistem transpor adalah 21,941 KJ/mol.
PENGOLAHAN LIMBAH PADAT DAUN KAKAO DENGAN PROBIOTIK Pediococcus pentosaceus DAN KOTORAN KAMBING (ANALISIS KADAR AIR, pH, DAN SUHU) Mistia Sari; Hendra Anwar
Journal of Scientech Research and Development Vol 5 No 1 (2023): JSRD, June 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i1.172

Abstract

Telah dilakukan penelitian pembuatan kompos dari daun kakao sebanyak 1500 gram dengan activator kotoran kambing dengan berat 300 gram dan bakteri Pediococcus pentosaceus Sebanyak 1 x 109 CFU/mL difermentasikan selama enam minggu. Penelitian ini bertujuan untuk melihat keefektifan kerja dari activator kotoran kambing dan bakteri Pediococcus pentosaceus dalam pengomposan limbah daun kakao, Nilai Ph, temperature dan kadar air di analisis secara berkala. Persentase kompos yang terbentuk selama inkubasi enam minggu yaitu 56,94 % dengan kadar air 60.34%, suhu 28oC dan Ph 8.93
ANALISIS KESESUAIAN KUALITAS AIR MINUM TERHADAP DEPOT AIR MINUM ISI ULANG DI KELURAHAN ANDURING BERDASARKAN PERMENKES RI Hendra Anwar; Rianti Noviza
Ekasakti Jurnal Penelitian dan Pengabdian Vol. 4 No. 2 (2024): Ekasakti Jurnal Penelitian dan Pengabdian
Publisher : LPPM Universitas Ekasakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31933/ejpp.v4i2.1144

Abstract

Population growth which is increasing rapidly every year is one of the factors increasing public interest in consuming drinking water from refill drinking water depots (DAMIU). Based on BPS data from the city of Padang, all households in the Kuranji sub-district have used refilled drinking water as a source of drinking water. However, compared to bottled drinking water produced by the industry through an automated process and accompanied by quality testing before being circulated, many DAMIU business managers are not aware of the importance of government policies regarding quality testing of refill drinking water so that a lot of drinking water from DAMIU is declared does not meet drinking water requirements. This study aims to obtain data and information about the quality of drinking water on drinking water DEPOT in Anduring Village which includes physical and chemical parameters of drinking water (pH, Odor, Taste, Color, Turbidity, Total Dissolved Solids (TDS) and Total Hardness as CaCO 3 ) based on PERMENKES RI No. 492/MENKES/PER/IV/2010 . This type of research is classified as laboratory experiment research, to obtain primary data and secondary data. This primary data is obtained from the results of laboratory analysis through samples taken by non- probability sampling with technique convenience sampling while secondary data were obtained from historical reports and published document data which were used as reference and interpretation of the analysis obtained. The results of this study indicate that one of the depots from the three depots as samples in this study was declared not to meet the drinking water quality requirements for one test parameter, namely the pH parameter, while the other two depots were declared to have met the drinking water quality requirements for all tested parameters.
The Aeration Process on the Reduction of COD, BOD, and TSS Parameters in Palm Oil Mill Liquid Waste through Aerobic Treatment Jefri Suryadi; Leila Muhelni; Sanny Edinov; Dertha Mukhtar; Hendra Anwar
The Future of Education Journal Vol 4 No 8 (2025): Continued
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v4i8.930

Abstract

Palm oil mill liquid waste contains high organic matter and nutrients, such as Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Suspended Solid (TSS), and low acidity (pH). If this liquid waste is discharged directly into water bodies without treatment, it will pollute the environment and disrupt aquatic ecosystems (National Standardization Agency.2016). One of the efforts to treat liquid waste in palm oil mills can be done by aeration process. The aeration process aims to increase the level of dissolved oxygen (DO) in liquid waste so that aerobic microorganisms can effectively degrade organic matter. The aeration process can be carried out by several methods, such as using an aerator (Fitri, A., Susanto, H., & Budiaman, I. G. S. 2017).)Dissolved Oxygen (DO) Increased from 0 hours to 3.9 Mg/l, 24 hours to 5.7 Mg/l and 72 hours to 6.3 Mg/l. PH Increased from 0 hours to 4.32, 24 hours to 4.78 and 72 hours to 5.32 So the increase in DO and PH during the Aeration process is very helpful in reducing the level of pollutants in palm oil mill waste The effectiveness of the aerobic aeration process in the treatment of palm oil mill waste is able to reduce the level of TSS, COD, BOD, for TSS at 0 hours 461 m/L, 24 hours 403 m/L ,72 hours 275 m./L for COD at 0 hours 4240 m/L 24 hours 3816 m/L ,72 hours 1018 m/L for BOD at 0 hours 506 m/L, 24 hours 358 m/L ,72 hours 298 m/L.
ANALISIS KANDUNGAN N, P, K, DALAM KOMPOS ORGANIK LIMBAH BAGLOG JAMUR TIRAM PUTIH (PLEUROTUS OSTREATUS) DAN KOTORAN SAPI MENGGUNAKAN AKTIVATOR EM4 Deya Suryani; Hendra Anwar; Mistia Sari; Laila Muhelni
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 8 No. 3 (2025): August 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v8i3.4169

Abstract

Abstract: Large-scale production of white oyster mushrooms (Pleurotus ostreatus) in Indonesia produces solid waste in the form of baglog waste, which still contains high-value organic materials, particularly in Lubuk Minturun, Padang City. However, mushroom baglog waste has great potential as an environmentally friendly and nutrient-rich organic compost material. This study utilized baglog waste from white oyster mushrooms using cow dung as an activator. This research was conducted using an experimental method by designing a mixture of organic materials and adding EM4 to accelerate the decomposition process. The fermentation process lasted for 30 days, with temperature, humidity, odor, and texture monitored to ensure optimal composting. The results showed that the use of EM4 significantly increased the nutrient content of the compost. The combination of mushroom baglog and cow dung produced compost with N, P, and K contents that met the organic compost quality standards based on SNI 19-7030-2004. Thus, the utilization of oyster mushroom baglog waste and cow dung into organic compost is environmentally friendly and produces high-quality organic fertilizer to support agricultural productivity. Keywords: organic compost, fermentation, pleurotus ostreatus, cow dung. Abstrak: Produksi jamur tiram putih ( pleurotus ostreatus ) di indonesia, dalam skala besar menghasilkan limbah padat berupa limbah baglog yang masih mengandung bahan organik bernilai guna tinggi, khususnya di Lubuk Minturun Kota Padang. Meskipun Demikian, Limbah Baglog Jamur memiliki potensi besar sebagai bahan kompos organik yang ramah lingkungan dan kaya nutrisi. Penelitian ini memanfaatkan limbah baglog dari jamur tiram putih yang menggunakan aktivator dari kotoran sapi. Penelitian ini dilakukan melalui metode eksperimental dengan merancang komposisi campuran bahan organik dan penambahan EM4 untuk mempercepat proses dekomposisi. Proses fermentasi berlangsung selama 30 hari dengan pemantauan  suhu, kelembapan, bau dan tekstur guna memastikan berlangsungnya proses pengomposan secara optimal.Hasil penelitian menunjukan bahwa penggunaan EM4 secara signifikan meningkatkan kandungan unsur hara dalam kompos. Kombinasi antara baglog jamur dan kotoran sapi mampu menghasilkan kompos dengan kandungan N,P,K yang memenuhi standar mutu kompos organik berdasarkan SNI 19-7030-2004. Dengan demikian, pemanfaatan limbah baglog jamur tiram dan kotoran sapi menjadi kompos organik yang ramah lingkungan sekaligus menghasilkan pupuk organik berkualitas untuk mendukung produktivitas pertanian Kata kunci : kompos organik, fermentasi, pleurotus ostreatus, kotoran sapi.
ANALISIS KADAR UNSUR HARA PADA KOMPOS DARI BATANG PISANG KEPOK (Musa acuminata) DENGAN AKTIVATOR EM4 DAN AIR CUCIAN BERAS” Rifqi Alfarestu; Leila Muhelni; Hendra Anwar; Hendra Anwar
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 8 No. 3 (2025): August 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v8i3.4197

Abstract

Abstract: Kepok banana (Musa acuminata) stem waste was mixed with rice bran to make compost, aiming to return organic matter to the soil and increase fertility. This study examined the effectiveness of EM4 activator and rice washing water in composting banana stem waste. There were four treatments: banana stem, bran (BD), banana stem, bran, rice washing water (BDA), banana stem, bran, EM4 (BDE), and banana stem, bran, EM4 and rice washing water (BDAE). The results showed that the addition of EM4 and rice washing water increased the composting speed within 30 days, using a C/N ratio reaching 20.76%, according to SNI standards. The nutrient content of the compost also met SNI 19-7030-2004 standards, using analysis providing levels of Nitrogen, Phosphorus, Potassium, organic C, and water content suitable for use. This study recommends further development to produce Liquid Organic Fertilizer (POC). Keyword:  Analysis of Nutrient Content in Compost from Kepok Banana Stems (Musa                 acuminata) with EM4 Activator and Rice Washing Water. Abstrak: Limbah batang pisang kepok (Musa acuminata) dicampur memakai dedak untuk dibuat kompos, bertujuan mengembalikan bahan organik ke tanah serta menaikkan kesuburan. Penelitian ini melihat efektivitas aktivator EM4 serta air cucian beras dalam pengomposan limbah batang pisang. Terdapat empat perlakuan: batang pisang, Dedak (BD), batang pisang, Dedak, Air cucian beras (BDA), batang pisang, Dedak, EM4 (BDE), dan  batang pisang, Dedak, EM4 dan   Air cucian beras (BDAE). Akibat menyampaikan bahwa penambahan EM4 dan  air cucian beras meningkatkan kecepatan pengomposan pada waktu 30 hari, memakai rasio C/N mencapai 20,76%, sesuai standar SNI. Kandungan hara pada kompos juga memenuhi standar SNI 19-7030-2004, memakai analisis membagikan kadar Nitrogen, Fosfor, Kalium, C organik, dan  kadar air yang layak digunakan. Penelitian ini merekomendasikan pengembangan lebih lanjut buat menghasilkan Pupuk Organik Cair (POC). Kata kunci:  Analisis Kadar Unsur Hara Pada Kompos Dari Batang Pisang Kepok (Musa                     acuminata) Dengan Ativator EM4 Dan Air Cucian Beras. 
Co-Authors Dertha Mukhtar Deya Suryani Hary Sanjaya Hendra Anwar Jefri Suryadi Jepri Limbong Laila Muhelni Leila Muhelni Mistia Sari Rianti Noviza Rifqi Alfarestu Sanny Edinov