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All Journal Jurnal Solum Tropical Wetland Journal Agroekotek View Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Civil Engineering and Planning (JCEP) Journal of Infrastructure and Civil Engineering Impression : Jurnal Teknologi dan Informasi
Ahmad Kurnain, Ahmad
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Public Health Transportation Other

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MOISTURE RELEASE OF TROPICAL PEAT SOILS AS DECREASING WATER TABLE Kurnain, Ahmad
TROPICAL WETLAND JOURNAL Vol 1, No 1 (2015)
Publisher : The Journal is published by Graduate Programe of Lambung Mangkurat University

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Abstract

Hydro-physics of peat soils varied with their peat decomposition degree. One of the important hydro-physics is ability of the peat soil to release water as decreasing water table. Potential of water availabilty to crop growth is evidently related to this behaviour. The present study was conducted to understand modes of moisture release of peat soils as decreasing water table. Water tables were simulated using a hanging column method.  The water table was arranged at levels of 0, 10, 20, 30, 50, and 100 cm below peat column surfaces. Potential of moisture release or in oppositely potential of moisture retention could be modelled with the 3 parameter equation.  Highly decomposed peat characterized by higher bulk density and lower total porosity stored less water but retained more water.Key words: available water, bulk density, peat soil, porosity.
Performance of Activated Carbon Adsorption and Ultrafiltration Membrane Hybrid Process for Leachate Treatment Farah Diena, Nurin Nisa; Mahmud, Mahmud; Riduan, Rony; Kurnain, Ahmad
TROPICAL WETLAND JOURNAL Vol 4, No 1 (2018)
Publisher : The Journal is published by Graduate Programe of Lambung Mangkurat University

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Abstract

Leachate is wastewater that contains pollutants dominated by organic matter. Conventional leachate treatments have some disadvantages therefore alternative treatments are needed. One of that alternative treatments is ultrafiltration membrane and adsorption as pretreatment. The aims of this study are to analyze adsorption isotherm and kinetic model for UV254 (UV adsorbance at 254 nm wavelength) adsorption, the performance of powdered activated carbon (PAC) adsorption and ultrafiltration membrane hybrid process for UV254 of leachate removal, and the effect of pretreatment towards membrane fouling. The result of this study are Freundlich isotherm and pseudo second order kinetic model best fitted model for ultrafiltration membrane hybrid process condition for UV254 removal level are at pH 6; 120 minutes contact time; and 4 g/L PAC doses. Adsorption as pretreatment can reduce membrane ultrafiltration fouling.
CAPILLARY ACTION OF WATER ON PEAT SOIL APPLIED SWRT MEMBRANES IN DIFFERENT LAND USES Nugraha, Muhammad Imam; Kurnain, Ahmad
Jurnal Solum Vol 20, No 2 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.2.%p.2023

Abstract

Plants, water, and peat soil interact to form peatland ecosystems, which are composed of these three interrelated elements. The water balance of peatlands is significantly influenced by the capillarity of the peat soil. This study attempts to ascertain the impact of depth on applying subsurface water retention technology (SWRT) membrane on capillary action based on moisture of peat soil in different    land uses. A completely nested randomized design was utilized in this investigation to avoid bias of the different degree of decomposition between land uses. The type of land use—namely, shrubs (PL1) and agricultural land (PL2) was the first account. The position of the membrane (its depth), which was set at -20 cm (D1), -30 cm (D2), and -50 cm (D3) and in addition to a control treatment without membrane installation (D0), was the second account. Three times each experimental unit was repeated. The YL-100 soil moisture content sensor, which is powered by Arduino, presented the research results. Arduino can produce digital values with a range of 0 to 1023 by converting moisture values that were  output as analog signals into digital values using an analog to digital converter (ADC) with a resolution of 10 bits. The outcome revealed that soil moisture content increasing up to the peat soil layer of 5 to 10 cm until the fifth day of observation due to rainfall along our study that increased the flux of water flow into the peat soil. 
Pengaruh Pemberian Pupuk Urea, Zeolit dan Asam Humat Terhadap Pertumbuhan Bawang Daun (Allium fistulosum L.) dan Perubahan Beberapa Sifat Kimia Tanah Pada Lahan Gambut Ramadhani, Riko Putra; Ifansyah, Hairil; Kurnain, Ahmad
Agroekotek View Vol 7, No 1 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/agtview.v7i1.4081

Abstract

Management and utilization of turf soil for cultivation faces several problems such as pH conditions that quite high acidic, and also the fertility in turf soil is quite low. The mixing of Urea Fertilizer with the addition of ameliorant materials such as Zeolite, and Humic Acid was expected to improve the N nutrient status in turf soils to achieve optimal conditions for plants growth to be cultivated on turf soils. The goals of this study was to determine the effect ofapplied Urea Fertilizer, Zeolite and AH-90 on changes in pH, N-Mineral (NH4+    and NO3-),soluble Fe, dry weight, N absorption of Onion plants (Allium fistusolum L.) that planted on turf soils. This study used a completely randomized design (CRD). The experimental factor that applied in this study was Urea Fertilizer within the level 0 kg/ha, 75kg/ha and 100 kg/ha. Zeolite within the level 0 tons/ha and 10 tons/ha. And Humic Acid (AH-90) within the level 0 kg/ha and 10 kg/ha. The result of this study showed that the interaction of treatment (Urea, Zeolite and Humic Acid) had no impact on parameter changes in the pH value of turf soils, N Plant Tissue,and dry weight of onion plants. The addition of Urea was able to increase the Nitrate (NO3-)content in the soil. And Zeolite application can reduce the Ammonium (NH4+) and iron solubilityin turf soil.
Analisis Perbandingan Parameter Model Mock dan Nreca Dalam Prediksi Aliran Rendah (Studi Kasus: DAS Siak Bagian Hulu) Husaini, Rizki Ramadhan; Ningrum, Puspa; Alputra, Giya Naufal; Kurnain, Ahmad
Journal of Infrastructure and Civil Engineering Vol. 4 No. 3 (2024)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v4i3.63

Abstract

Analisis aliran rendah (low flow) merupakan salah satu aspek penting dalam pengelolaan sumber daya air, terutama untuk menjaga keberlanjutan pasokan air pada musim kering dan mengelola dampak kekeringan. Beberapa model hidrologi untuk analisis aliran rendah dapat digunakan termasuk Metode Mock dan NRECA. Penelitian ini bertujuan untuk membandingkan dua metode tersebut dalam analisis debit lapangan guna mendapatkan hasil yang terbaik. Uji model Mock dan NRECA dilakukan menggunakan tiga parameter utama dan dievaluasi berdasarkan berbagai kriteria penilaian kinerja model. Pada DAS Siak Bagian Hulu, hasil uji dengan menggunakan Metode Mock menunjukkan koefisien korelasi (R) sebesar 0,405, volume error (VE) sebesar 3,735 %, dan koefisien efisiensi (CE) sebesar -1,106. Sementara itu, hasil untuk Metode NRECA memberikan koefisien korelasi (R) sebesar 0,456, volume error (VE) sebesar 4,866 %, dan koefisien efisiensi (CE) sebesar -2,462. Secara keseluruhan, hasil analisis debit lapangan terbaik di DAS Siak Bagian Hulu ditunjukkan oleh metode Mock dibandingkan dengan NRECA
Pekanbaru Town Square Development With Concept Mix Use Building (Shopping Mall, Hotel, Condotel, Convention, Sport Centre) Kurnain, Ahmad; Bambang Supeno; Muhammad Yazid; Rahmat Tisnawan; Rizki Ramadhan Husaini
Journal of Civil Engineering and Planning (JCEP) Vol. 6 No. 1 (2025)
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v6i1.10106

Abstract

This study assesses the financial feasibility of a privately financed infrastructure project under a Build-Operate-Transfer (BOT) scheme with a total investment of USD 76 million. The investment is distributed over a three-year construction phase, followed by a 30- to 60-year operation period generating annual net profits of USD 8.64 million. Key financial metrics including Net Present Value (NPV) and Internal Rate of Return (IRR) are utilized to evaluate the project. The results indicate a negative NPV of approximately USD -14.85 million for a 30-year operation, suggesting the project is not viable under a conservative time horizon. However, extending the operation to 60 years yields a positive NPV of USD +23.8 million and an estimated IRR of 11.7%, surpassing the assumed discount rate of 10%. These findings highlight the importance of operational duration in BOT projects and suggest that long-term operation is essential to achieve financial sustainability. Recommendations include extending the concession period and optimizing cost structures to enhance investment attractiveness.
CAPILLARY ACTION OF WATER ON PEAT SOIL APPLIED SWRT MEMBRANES IN DIFFERENT LAND USES Nugraha, Muhammad Imam; Kurnain, Ahmad
Jurnal Solum Vol. 20 No. 2 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.2.%p.2023

Abstract

Plants, water, and peat soil interact to form peatland ecosystems, which are composed of these three interrelated elements. The water balance of peatlands is significantly influenced by the capillarity of the peat soil. This study attempts to ascertain the impact of depth on applying subsurface water retention technology (SWRT) membrane on capillary action based on moisture of peat soil in different    land uses. A completely nested randomized design was utilized in this investigation to avoid bias of the different degree of decomposition between land uses. The type of land use—namely, shrubs (PL1) and agricultural land (PL2) was the first account. The position of the membrane (its depth), which was set at -20 cm (D1), -30 cm (D2), and -50 cm (D3) and in addition to a control treatment without membrane installation (D0), was the second account. Three times each experimental unit was repeated. The YL-100 soil moisture content sensor, which is powered by Arduino, presented the research results. Arduino can produce digital values with a range of 0 to 1023 by converting moisture values that were  output as analog signals into digital values using an analog to digital converter (ADC) with a resolution of 10 bits. The outcome revealed that soil moisture content increasing up to the peat soil layer of 5 to 10 cm until the fifth day of observation due to rainfall along our study that increased the flux of water flow into the peat soil. 
EDUKASI DAN PENERAPAN TEKNOLOGI SEDERHANA PENGELOLAAN AIR BERSIH DI PONDOK PESANTREN AL QUDS PUTRA Tisnawan, Rahmat; Bagio, Toni Hartono; Basri, Doni Rinaldi; Kurnain, Ahmad; Surya, Afin; Lestari, Suci Shinta
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2025): Volume 6 No. 1 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i1.37335

Abstract

Pondok Pesantren Al-Quds Putra menghadapi tantangan dalam menyediakan air bersih yang memadai, yang dapat berdampak negatif terhadap kesehatan santri dan lingkungan pesantren. Untuk mengatasi masalah ini, dilakukan kegiatan pengabdian masyarakat yang berfokus pada edukasi dan penerapan teknologi sederhana pengolahan air bersih dengan metode filtrasi. Sistem filtrasi yang digunakan terdiri dari beberapa lapisan pasir, kerikil, dan karbon aktif yang berfungsi untuk menyaring partikel besar dan kotoran dari air. Kegiatan ini dimulai dengan sosialisasi dan pelatihan kepada santri dan pengurus pesantren mengenai pentingnya air bersih dan teknik pengolahan yang benar. Pemasangan sistem filtrasi dilakukan secara partisipatif, melibatkan seluruh elemen pesantren untuk memastikan pemahaman dan keterlibatan aktif. Hasil implementasi menunjukkan peningkatan signifikan dalam kualitas air yang memenuhi standar kesehatan yang ditetapkan oleh Kementerian Kesehatan. Selain itu, edukasi yang diberikan juga berhasil meningkatkan kesadaran lingkungan di kalangan santri. Kegiatan pengabdian masyarakat ini menunjukkan bahwa penerapan teknologi sederhana pengolahan air bersih di Pondok Pesantren Al-Quds berhasil meningkatkan kualitas air dan kesadaran lingkungan
PEMANFAATAN DRONE UNTUK PEMBELAJARAN PEMETAAN TOPOGRAFI DAN BATAS WILAYAH PEMERINTAHAN DI SMK N 5 RUMBAI KOTA PEKANBARU Husaini, Rizki Ramadhan; Basri, Doni Rinaldi; Kurnain, Ahmad; Anugerah, M Fajar
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2025): Volume 6 No. 1 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i1.37438

Abstract

Kemajuan teknologi dalam bidang pemetaan dan survei telah membuka peluang baru bagi dunia pendidikan, terutama dalam pengajaran geografi, sains, dan teknologi. Salah satu teknologi yang semakin banyak digunakan dalam pemetaan topografi adalah drone atau pesawat tanpa awak. Di tingkat sekolah menengah, pengenalan teknologi ini menjadi penting agar siswa mendapatkan wawasan yang mendalam tentang aplikasi ilmu pengetahuan dan teknologi secara praktis. Kegiatan pengabdian masyarakat ini dilakukan di SMK N 5 Rumbai Kota Pekanbaru yang bertujuan untuk memperkenalkan siswa pada teknologi drone serta memberikan pemahaman mengenai aplikasinya dalam pemetaan topografi dan pembuatan batas wilayah pemerintahan. Untuk melaksanakan kegiatan ini, tiga pendekatan digunakan: sosialisasi, pelatihan, dan simulasi. Sosialisasi melibatkan materi, diskusi, dan tanya jawab tentang pengenalan teknologi drone dan contoh pemanfaatannya dalam bidang keilmuan geografi. Sementara itu, pelatihan dan simulasi melibatkan penyebaran materi tentang pengoperasian drone dan contoh penggunaan langsungnya di lapangan. Hasil dari kegiatan pengabdian ini, siswa memperluas pemahaman mereka tentang betapa pentingnya menggunakan teknologi drone untuk pemetaan daripada menggunakan alat total station yang ada di sekolahnya yang dioperasikan secara manual. Mereka tidak hanya memperoleh pemahaman akademik yang lebih baik, tetapi kegiatan ini juga membuka mata mereka pada peluang karir di bidang teknik sipil, dan sistem informasi geografis. Beberapa siswa mengatakan mereka ingin belajar lebih banyak tentang teknologi drone untuk meningkatkan kemampuan mereka.
Analisis Konstruksi Substruktur Jembatan Rangka Baja Sungai Rokan Kiri di Kota Tengah Kabupaten Kampar Kurnain, Ahmad; Yazid, Muhammad; Tisnawan, Rahmat; Basri, Doni Rinaldi; Ningrum, Puspa
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 3 (2025): November 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i3.1261

Abstract

Penelitian ini membahas perencanaan teknis bangunan bawah jembatan, khususnya abutment pada Jembatan Rangka Baja Sungai Rokan Kiri di Kota Tengah, Kabupaten Kampar. Metode penelitian yang digunakan meliputi studi literatur dan studi desain, dengan pengumpulan data primer berupa hasil sondir, data tanah, topografi, serta hidrografi aliran sungai. Analisis dilakukan terhadap beban yang bekerja pada abutment, meliputi beban vertikal, beban horizontal, serta tekanan tanah lateral. Faktor keamanan terhadap geser (SF-{geser}) dan guling (SF-{guling}) dihitung untuk memastikan stabilitas konstruksi. Hasil perhitungan menunjukkan bahwa abutment yang direncanakan memenuhi kriteria keamanan yang dipersyaratkan, baik terhadap gaya geser maupun gaya guling, sesuai dengan standar peraturan Departemen Pekerjaan Umum. Dengan demikian, rancangan bangunan bawah jembatan ini dapat dinyatakan layak secara teknis dan aman digunakan dalam mendukung beban lalu lintas di atasnya.   This study discusses the technical planning of bridge substructures, particularly the abutment of the Steel Truss Bridge over the Rokan Kiri River in Kota Tengah, Kampar Regency. The research methods employed include a literature review and design study, with primary data collection consisting of cone penetration test (CPT) results, soil data, topographic data, and river flow hydrology data. The analysis focuses on the loads acting on the abutment, including vertical loads, horizontal loads, and lateral earth pressure. Safety factors against sliding (SF_sliding) and overturning (SF_overturning) are calculated to ensure the structural stability of the abutment. The calculation results indicate that the planned abutment meets the required safety criteria against both sliding and overturning forces in accordance with the standards set by the Ministry of Public Works. Therefore, the design of the bridge substructure can be considered technically feasible and safe to support traffic loads above it.  
Co-Authors Alputra, Giya Naufal Anugerah, M Fajar Bagio, Toni Hartono BAMBANG SUPENO Doni Rinaldi Basri Farah Diena, Nurin Nisa Hairil Ifansyah Husaini, Rizki Ramadhan lestari, Suci Shinta Mahmud Mahmud Muhammad Imam Nugraha Muhammad Yazid Muhammad Yazid Puspa Ningrum Rahmat Tisnawan Ramadhani, Riko Putra Riandi, Daly Rony Riduan Surya, Afin