Article Per Year (5 Year)
p-Index From 2020 - 2025
1.037
P-Index
This Author published in this journals
All Journal Jurnal GEOSAPTA Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Penelitian Enjiniring Fakultas Teknik Unhas
Hatta, Asta Arjunoarwan
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Public Health

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Optimasi Penggunaan Dosis Koagulan Alum dan Poly Aluminium Chloride (PAC) dalam Pengelolaan Limbah Cair Batubara Nur Ramadhan, Aditya Anugrah; Ramli, Muhammad; Hatta, Asta Arjunoarwan
Jurnal Penelitian Enjiniring Vol 26 No 1 (2022)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052022.01

Abstract

Setiap pertambangan batubara diharuskan mengolah terlebih dahulu air limbah yang dihasilkan sebelum dibuang ke lingkungan. Proses pengelolaan limbah cair batubara yang umum digunakan untuk memenuhi baku mutu tersebut adalah pengendapan padatan tersuspensi dengan penambahan koagulan. Penggunaan dosis koagulan yang tidak tepat dapat mempengaruhi keefektifan koagulan dalam membuat parameter pada air sesuai dengan baku mutu yang ditetapkan oleh pemerintah. Penelitian ini bertujuan untuk menentukan dosis yang tepat dari beberapa koagulan dalam pengelolaan limbah cair batubara. Pada studi ini, dilakukan jar test untuk mengetahui nilai TSS dan pH akhir pada sampel yang telah diberi perlakuan berupa penambahan variasi dosis koagulan alum dan PAC, yaitu 50, 100 dan 150 ppm. Dosis optimum diperoleh dengan menggunakan analisis interpolasi kuadratik. Hasil analisis menunjukkan bahwa dosis optimum Dosis optimal pada Alum adalah 25 ppm sedangkan pada PAC adalah 23 ppm. Dosis koagulan dan nilai TSS memiliki hubungan yang signifikan dimana penambahan jumlah dosis akan menurunkan nilai TSS dengan rata-rata presentasi penurunan TSS sebesar 94,55% pada Alum dan 98,88% pada PAC. Dosis koagulan dan nilai pH memiliki hubungan yang signifikan dimana penambahan jumlah dosis akan menurunkan nilai pH dengan presentasi penurunan pH sebesar 9,74% pada Alum dan 16,41% pada PAC
Studi Ekstraksi Tembaga Dari Bijih Oksida Dengan Menggunakan Larutan Asam Sitrat Sufriadin, Sufriadin; Mukhlis, Mukhilis; Hatta, Asta Arjunoarwan
Geosapta Vol 9, No 2 (2023): JULI 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v9i2.15056

Abstract

Bijih tembaga oksida merupakan bijih tembaga sekunder dengan kadar tembaga yang relatif lebih rendah namun memiliki cadangan yang besar dibandingkan dengan bijih sulfida. Pelindian tembaga dari bijih oksida menggunakan asam organik yaitu asam sitrat merupakan pendekatan baru karena pada umumnya pelindian menggunakan asam anorganik yang memiliki efek negatif terhadap lingkungan. Penelitian ini bertujuan untuk mengetahui komposisi mineral dan kadar tembaga sampel bijih oksida serta menganalisis pengaruh waktu serta konsentrasi asam sitrat. Metode analisis yang digunakan dalam penelitian ini adalah metode mikroskopi optis dan X-Ray Diffraction (XRD) untuk analisis mineralogi, serta metode Atomic Absorption Spectrophotometry (AAS) untuk menentukan kadar tembaga. Percobaan pelindian tembaga dari bijih oksida dilakukan pada tekanan atmosfer. Hasil analisis mikroskopi dan XRD menunjukkan bahwa mineral yang terdapat pada sampel bijih tembaga oksida terdiri dari kalkopirit, kovelit, malasit, pseudomalasit, dan langit sebagai mineral pembawa logam Cu. Kuarsa, kaolinit, kamosit, maghemit, goetit, dan hematit juga dijumpai pada sampel sebagai mineral pengotor. Berdasarkan hasil percobaan pelindian terhadap bijih tembaga dengan asam sitrat menunjukkan bahwa recovery tertinggi yaitu 19,07% yang dicapai pada variabel konsentrasi 0,5 M. Sementara itu, pada pelindian dengan variabel waktu diperoleh recovery tertinggi sebesar 22,88% selama pelindian 4 jam.
Peningkatan Kualitas Bahan Baku Pengrajin Batubata Di Desa Panyyangkalang Kecamatan Bajeng Kabupaten Gowa ., Sufriadin; Nur, Irzal; Widodo, Sri; ., Djamaluddin; Qaidahiyni, Nirmana Fiqra; Arumansawang, Andi; Hatta, Asta Arjunoarwan; Fajar, Nur Alam
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 1 (2024): Community Development
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i1.219

Abstract

Craftsman group of earth brick at Ballaparang sub village, Panyyangkalang village of Bajeng Subdistrict in the Gowa Regency has long been produced bricks mainly for the construction materials in the Makassar City and Gowa. However, some problems arisen by the craftsman such as brick quality produced is crack easily and the brick maturity during firing is difficult to control. To solve the problem, it was performed the counseling activity with the aims at increasing the brick quality through firing test with controlled temperature and time. The compressive strength test was conducted and compared to the brick produced by craftsman. In addition, mineralogical and chemical testing of raw material was performed using X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) methods respectively. Compressive strength test was carried out for both bricks produced by craftsman and brick fired in laboratory using Unconfined Compressive Strength (UCS) method. Testing results show that clay raw materials were composed of feldspar (plagioclase), quartz, illite, nacrite, and magnetite. Chemical testing exhibits that iron oxides (Fe2O3) is high so it is suggested to reduce the iron content in raw materials by using low-intensity magnetic separator. The implementation results of compressive strength produced by craftsman provide the average value of 3.03 MPa whereas brick fired in the laboratory give the minimum value of 5.09 Mpa which was achieved in 6 hour and 500oC firing. The contribution of this activity indicates the improvement of brick quality mainly compressive strength up to 59 %.
Sosialisasi Perencanaan Sumur Resapan Kecamatan Biringkanaya Purwanto, Purwanto; Ramli, Muhammad; Nur, Irzal; ., Sufriadin; Anas, Aryanti Virtanti; Widodo, Sri; S. Tui, Rini Novrianti; Amalia, Rizki; Hatta, Asta Arjunoarwan
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.447

Abstract

When there is a population increase within an area, it will be coincided with housing needs. The demand of residential area sometimes requires land conversion from various previous uses such as rice fields, swamps, and other rain catchment areas. This shift in land functions causes several problems, such as flooding in the rainy season, drought in the dry season, and other environmental problems, including the increasing household waste. This community service is conducted to socialize the planning of infiltration wells in Biringkanaya District. Mainly, this community service aims to increase the community's awareness regarding perodical flood disasters and surface water shortages around the area. Besides that, this community service also aims to socialize the use of infiltration wells as an attempt to manage water around the activity location. Several steps have been taken in order to achieve those goals. Those steps are surveying field conditions, taking out questionnaires, and public disseminating to the community and other stakeholders. The field survey shows that the flood occurs because the discharge of runoff water that falls into the rain catchment area is much greater than the discharge of runoff that comes out. Based on the analysis, planning and designing infiltration wells are imperative to accumulate ground water. After the dissemination, the level of public understanding of surface water conditions and the function of infiltration wells is increasing. The community provides input regarding planning for infiltration wells that can be utilized to manage household waste.
Pengenalan Karakteristik Mineral dan Batuan Bagi Siswa Jurusan Geologi Pertambangan SMK Penerbangan Techno-Terapan Makassar Amalia, Rizki; ., Sufriadin; ., Purwanto; Sutardjo Tui, Rini Novrianti; Hatta, Asta Arjunoarwan; Nur, Irzal; Ramli, Muhammad; Anas, Aryanti Virtanti; Widodo, Sri; Alvionita, A. Febbi; Gunawan, Syahrul; Aditya, Dzulkifli
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.563

Abstract

Minerals and rocks are knowledge that everyone who wants to work in the mining industry must know. This community service activity aims to improve the understanding and skills of students majoring in Mining Geology at SMK Techno-Terapan Makassar in describing the characteristics of minerals and rocks. The problems faced by partners are the lack of laboratory facilities and the dominance of theoretical learning so practicums are not optimal. This training involved 39 students who were guided by lecturers and students from the Department of Mining Engineering, at Hasanuddin University. The training method includes material presentation, rock description tutorials, and mineral identification using 18 igneous, sedimentary, and metamorphic rock samples. Assessment is carried out through pre-test and posttest to measure participants' understanding. The results show an increase in the average score from 6.31 to 7.56, with a maximum score of 10, although not significant for some participants. Apart from providing increased understanding, this activity hands over rock samples to partners for further learning. In conclusion, this training is effective in improving students' practical skills related to minerals and rocks, which is an important provision for their future in the mining-geology field.
Co-Authors ., Sufriadin Aditya, Dzulkifli Alvionita, A. Febbi Arumansawang, Andi Aryanti Virtanti Anas Djamaluddin . Gunawan, Syahrul Irzal Nur, Irzal Muhammad Ramli Mukhlis, Mukhilis Nur Alam Fajar Nur Ramadhan, Aditya Anugrah Purwanto . Qaidahiyni, Nirmana Fiqra Rini Novrianti Sutardjo Tui Rizki Amalia Rony, Zahara Tussoleha S. Tui, Rini Novrianti Sri Widodo Sufriadin, Sufriadin