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Wahab Wahab
Jurusan Teknik Pertambangan Fakultas Ilmu Dan Teknologi Kebumian, Universitas Halu Oleo
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Social Sciences Other

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SURVEI POTENSI KEPURBAKALAAN GUA – GUA DI KECAMATAN WIWIRANO, KABUPATEN KONAWE UTARA MELALUI PENDEKATAN SISTEM INFORMASI GEOGRAFIS (SIG) sandy suseno; Adha Mashur Sajiah; Ahmad Firman Tarta; Danial Danial; Wahab Wahab
SANGIA JOURNAL OF ARCHAEOLOGY RESEARCH Vol. 3 No. 2: December 2019
Publisher : Laboratorium Jurusan Arkeologi Fakultas Ilmu Budaya Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/sangia.v3i2.734

Abstract

This study aims to determine the distribution of caves / niches that are potentially archaeological in the District of Wiwirano, North Konawe as well as identifying archaeological remains found at these sites. Next, the locational cave / niche aspect is examined with a Geographic Information System (GIS) approach. Through the GIS approach, the data summarized will be visualized in the form of a thematic map containing the distribution of caves / niches in the District of Wiwirano, North Konawe including archaeological information contained in these caves / niches.Data collection was carried out by direct observation in the Wiwirano District area, North Konawe. At the time of the observation, the astronomical coordinates of the cave / niche were recorded and also the archaeological remains at that location were recorded. The next step, classifying the collected data is followed by digitizing the data for mapping through the GIS approach. The expected results of this study are to become the main reference about the distribution of caves / niches in the District of Wiwirano, North Konawe. In addition, the results of this study can reveal the potential of archaeological remains in the region. This is in accordance with UHO's strategic objectives namely the provision of quality, relevant and competitive education services as well as the achievement of improved quality of research and service that has competitiveness, and community development rural-oriented. This research is also in line with UHO's strategic goal of producing a database that can be a reference for UHO archeology students in conducting their final project research.
PELINDIAN BIJIH NIKEL LATERIT KADAR RENDAH MENGGUNAKAN METODE ATMOSPHERIC ACID LEACHING DALAM MEDIA ASAM KLORIDA (HCL) Dian Permana; Rizky Kumalasari; Wahab Wahab; Musnajam Musnajam
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 30, No 2 (2020)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/risetgeotam2020.v30.1097

Abstract

Ekstraksi nikel laterit menggunakan metode hidrometalurgi lebih efisien dari segi konsumsi energi dengan lebih sedikit gas buang dibandingkan dengan metode pirometalurgi. Hal ini menyebabkan nikel laterit berkadar rendah dapat diekstraksi lebih banyak menggunakan metode hidrometalurgi. Salah satu metode hidrometalurgi dalam mengekstraksi nikel dari bijih nikel laterit adalah Atmospheric Acid Leaching. Penelitian ini bertujuan untuk memperoleh data persentase perolehan nikel, menentukan variabel yang paling berpengaruh dan menentukan kondisi optimum dalam proses pelindian. Pada penelitian ini dilakukan variasi pada faktor-faktor yang berpengaruh dalam proses leaching yakni temperatur, konsentrasi asam dan waktu pelindian. Analisis kandungan nikel hasil pelindian dilakukan menggunakan Atomic Adsorbtion Spectroscopy (AAS). Hasil penelitian menunjukkan bahwa persentase perolehan nikel terendah adalah 9,40% Ni dan tertinggi 75,76% Ni. Perhitungan ANOVA digunakan untuk menentukan faktor paling berpengaruh pada proses pelindian nikel laterit. Faktor yang paling berpengaruh dalam penelitian ini adalah temperatur (B), diikuti konsentrasi asam (A), waktu pelindian (C), interaksi konsentrasi-temperatur (AB), interaksi temperatur-waktu (BC), interaksi konsentrasi-waktu (AC) dan interaksi konsentrasi-temperatur-waktu (ABC). Kondisi optimum pelindian diperoleh pada kondisi temperatur 75°C, konsentrasi asam 2,9-3 Molar dalam waktu 69-70 menit dengan perolehan nikel >70%. ABSTRACT -  Leaching of Low-Grade Nickel Laterite Ore Using Atmospheric Acid Leaching Method in Hydrochloric Acid. Nickel laterite extraction using the hydrometallurgical method is more efficient in energy consumption with less exhaust gas than the pyrometallurgical method. This method causes the extraction of low-grade nickel laterite ore using hydrometallurgy could be more effective. One of the hydrometallurgical methods to extract nickel from its ore is atmospheric acid leaching. This research aims to determine the percentage of nickel recovery through the leaching process, determine the most influenced leaching factor, and determine the optimum leaching condition. The main factors that influence the leaching process are temperature, acid concentration, and leaching time. Atomic adsorption spectroscopy was chosen to analyze the leaching solution. This research showed that the lowest recovery of nickel leaching was 9,40% of Ni, and the highest was 75,76% of Ni. Analysis of variance (ANOVA) was used to determine the most influenced factor of leaching. The most influenced factor was the temperature (B), followed by acid concentration (A), duration (C), the interaction of acid concentration-temperature (AB), the interaction of temperature-duration (BC), the interaction of acid concentration-duration (AC), and interaction of acid concentration-temperature-duration (ABC). The optimum leaching condition is at 75°C of temperature, 2,9-3 molar of acid concentration, in 69-70 minutes of duration, which has >70% of Ni recovery.
Studi Pengaruh Variabel Proses dan Kinetika Ekstraksi Nikel dari Bijih Nikel Laterit Menggunakan Larutan Asam Sulfat pada Tekanan Atmosferik Wahab Wahab; Erwin Anshari; Marwan Zam Mili; WD. Rizky Awaliah Nafiu; Muh. Nuzul Khaq; Daniyatno Daniyatno; Firdaus Firdaus; Yayat Iman Supriyatna
Jurnal Rekayasa Proses Vol 15, No 1 (2021)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.61533

Abstract

Leaching at atmospheric pressure is one of the leaching methods of concern because it has several advantages, namely that it can process low-level nickel ore, can operate at temperatures >100 ⁰C at atmospheric pressure, and can be used in saprolite and limonite ores. In this research, nickel extraction from nickel laterite ore was carried out using sulfuric acid solution (H2SO4) as a leaching agent. The variables that were varied in the leaching process were temperature (30, 60, and 90 ⁰C), sulfuric acid concentration (0.2, 0.5, and 0.8 molar) and leaching time (30, 60, and 90 minutes). In this study, a 3-factor analysis of variance (ANOVA) was used to see the significance of the variable effects and the order of the most influential variables. In addition, leaching kinetics was studied by shrinking core models to determine rate determining step. The results showed that the increase in temperature, sulfuric acid and leaching time produced a higher percentage of extracted nickel. Based on the 3-factor ANOVA, the order of the most influential variables was obtained, namely temperature, acid concentration and leaching time. The kinetics analysis showed that rate determining step of leaching ore nickel laterite with H2SO4 solution on atmospheric pressure is controlled by diffusion through solid layer product.Keywords: analysis of variance; leaching; saprolit; limonitA B S T R A KLeaching pada tekanan atmosfer adalah salah satu metode pelindian yang menjadi perhatian karena memiliki beberapa keuntungan yaitu dapat mengolah bijih nikel kadar rendah, dapat beroperasi pada temperatur >100 ⁰C pada tekanan atmosfer serta dapat digunakan pada bijih saprolit dan limonit. Dalam penelitian ini, dilakukan ekstraksi nikel dari bijih nikel laterit menggunakan larutan asam sulfat (H2SO4) sebagai agen pelindi. Variabel yang divariasikan dalam proses pelindian yaitu temperatur (30, 60, dan 90 ⁰C), konsentrasi asam sulfat (0,2; 0,5; dan 0,8 molar) dan waktu pelindian (30, 60, dan 90 menit). Dalam penelitian ini digunakan analysis of variance (ANOVA) 3 faktor untuk melihat signifikansi variabel dan urutan variabel yang paling berpengaruh. Selain itu, dilakukan studi kinetika pelindian menggunakan shrinking core model untuk mengetahui pengendali laju reaksi. Hasil penelitian menunjukkan bahwa peningkatan variabel temperatur, konsentrasi asam sulfat dan waktu pelindian menyebabkan meningkatnya persen ekstraksi nikel. Berdasarkan hasil ANOVA 3 faktor diperoleh urutan variabel yang paling berpengaruh yaitu temperatur, konsentrasi asam dan waktu pelindian. Hasil analisis kinetika menunjukkan bahwa pengendali laju reaksi pelindian bijih nikel laterit menggunakan larutan H2SO4 pada tekanan atmosfer yaitu difusi melalui lapisan produk padat.Kata kunci: analysis of variance; pelindian; limonit; saprolit
Studi Pengaruh Variabel Proses dan Kinetika Ekstraksi Nikel dari Bijih Nikel Laterit Menggunakan Larutan Asam Sulfat pada Tekanan Atmosferik Wahab Wahab; Erwin Anshari; Marwan Zam Mili; WD. Rizky Awaliah Nafiu; Muh. Nuzul Khaq; Daniyatno Daniyatno; Firdaus Firdaus; Yayat Iman Supriyatna
Jurnal Rekayasa Proses Vol 15, No 1 (2021)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.61533

Abstract

Leaching at atmospheric pressure is one of the leaching methods of concern because it has several advantages, namely that it can process low-level nickel ore, can operate at temperatures >100 ⁰C at atmospheric pressure, and can be used in saprolite and limonite ores. In this research, nickel extraction from nickel laterite ore was carried out using sulfuric acid solution (H2SO4) as a leaching agent. The variables that were varied in the leaching process were temperature (30, 60, and 90 ⁰C), sulfuric acid concentration (0.2, 0.5, and 0.8 molar) and leaching time (30, 60, and 90 minutes). In this study, a 3-factor analysis of variance (ANOVA) was used to see the significance of the variable effects and the order of the most influential variables. In addition, leaching kinetics was studied by shrinking core models to determine rate determining step. The results showed that the increase in temperature, sulfuric acid and leaching time produced a higher percentage of extracted nickel. Based on the 3-factor ANOVA, the order of the most influential variables was obtained, namely temperature, acid concentration and leaching time. The kinetics analysis showed that rate determining step of leaching ore nickel laterite with H2SO4 solution on atmospheric pressure is controlled by diffusion through solid layer product.Keywords: analysis of variance; leaching; saprolit; limonitA B S T R A KLeaching pada tekanan atmosfer adalah salah satu metode pelindian yang menjadi perhatian karena memiliki beberapa keuntungan yaitu dapat mengolah bijih nikel kadar rendah, dapat beroperasi pada temperatur >100 ⁰C pada tekanan atmosfer serta dapat digunakan pada bijih saprolit dan limonit. Dalam penelitian ini, dilakukan ekstraksi nikel dari bijih nikel laterit menggunakan larutan asam sulfat (H2SO4) sebagai agen pelindi. Variabel yang divariasikan dalam proses pelindian yaitu temperatur (30, 60, dan 90 ⁰C), konsentrasi asam sulfat (0,2; 0,5; dan 0,8 molar) dan waktu pelindian (30, 60, dan 90 menit). Dalam penelitian ini digunakan analysis of variance (ANOVA) 3 faktor untuk melihat signifikansi variabel dan urutan variabel yang paling berpengaruh. Selain itu, dilakukan studi kinetika pelindian menggunakan shrinking core model untuk mengetahui pengendali laju reaksi. Hasil penelitian menunjukkan bahwa peningkatan variabel temperatur, konsentrasi asam sulfat dan waktu pelindian menyebabkan meningkatnya persen ekstraksi nikel. Berdasarkan hasil ANOVA 3 faktor diperoleh urutan variabel yang paling berpengaruh yaitu temperatur, konsentrasi asam dan waktu pelindian. Hasil analisis kinetika menunjukkan bahwa pengendali laju reaksi pelindian bijih nikel laterit menggunakan larutan H2SO4 pada tekanan atmosfer yaitu difusi melalui lapisan produk padat.Kata kunci: analysis of variance; pelindian; limonit; saprolit
Kinetics Study of Leaching Ore Nickel Laterite Using Hydrochloric Acid in Atmosphere Pressure Wahab Wahab; Deniyatno Deniyatno; Marthines Saranga; Yayat Iman Supriyatna
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 32, No 1 (2022)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/risetgeotam2022.v32.1163

Abstract

Leaching of nickel laterite ore at atmospheric pressure is a leaching method that can be operated at >100⁰C temperatures in an atmospheric pressure, which is applicable to a low-grade laterite ore. This research aimed to study the effect of temperature, acid concentration, and leaching time on nickel extraction percentage and the leaching kinetics. Hydrochloric acid (HCl) was used as a leaching agent and several variables were applied, i.e., temperature (80⁰C, 90⁰C, 100⁰C), HCL concentration (5 M, 6 M, 7 M), and leaching duration (120 minutes, 150 minutes, 180 minutes) to investigate their effect on nickel extraction percentage. In addition, the kinetics of the leaching process was studied using a Shrinking Core Model. The results showed that the percentage of nickel extraction increased with increasing temperature, HCl concentration, and leaching time. The lowest percentage of nickel extraction of 51.29% was obtained when 80⁰C, five molar HCl, and 120 minutes leaching duration were applied. In contrast, The highest percentage of nickel extraction of 97.22% was obtained at 100⁰C, seven molar HCl, and 180 minutes of leaching time. The kinetics study results show that diffusion through the unreacted solid product layer controls the nickel leaching rate.
PRESIPITASI BESI DARI LARUTAN HASIL PELINDIAN BIJIH NIKEL LATERIT Wahab Wahab; Dandy Ashari; Deniyatno Deniyatno; Firdaus Firdaus; Erwin Anshari; Marwan Zam Mili; Rizky Awaliah Nafiu; Alrum Armid
Jurnal Teknologi Mineral dan Batubara Vol 18, No 3 (2022): Jurnal Teknologi Mineral dan Batubara Edisi September 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No3.2022.1176

Abstract

Presipitasi besi dari larutan hasil pelindian bijih nikel laterit merupakan tahapan yang harus dilakukan sebelum larutan diolah lebih lanjut. Tujuan penelitian ini adalah untuk mengetahui pengaruh varibel proses terhadap presipitasi besi serta mempelajari kinetika proses presipitasi. Dalam penelitian ini, presipitasi besi dilakukan menggunakan senyawa natrium hidroksida (NaOH). Variabel yang diamati yaitu temperatur (25, 40, 55, 70, dan 85°C) konsentrasi NaOH (10, 20, 30, dan 40% w/v), dan waktu (15, 30, 45, 60, dan 75 menit). Studi kinetika mengacu pada persamaan reaksi homogenous irreversible orde I, orde II dan orde III. Hasil penelitian menunjukkan bahwa peningkatan temperatur, konsentrasi NaOH, dan waktu meningkatkan persentase presipitasi besi. Persentase presipitasi besi tertinggi sebesar 84,868% dicapai pada pada temperatur 85°C, konsentrasi NaOH 40% w/v, dan waktu 75 menit. Studi kinetika menunjukkan bahwa reaksi presipitasi besi dari larutan hasil pelindian mengikuti reaksi irreversible orde III.
PENDAMPINGAN MASYARAKAT DALAM PENYUSUNAN PROGRAM PEMBERDAYAAN MASYARAKAT BERBASIS PARTISPATIF DI SEKITAR WILAYAH PERTAMBANGAN DESA MATABURA KECAMATAN AMONGGEDO KABUPATEN KONAWE Fitra Saleh; Jufri Karim; Erwin Anshari; Wahab Wahab; Marwan Zamili
Jurnal Pengabdian NUSANTARA Vol 2, No 2 (2022): Juli - Desember
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jpnus.v2i2.28362

Abstract

Matabura Village is one of the villages located in Amonggedo District, Konawe Regency, which is located around the nickel mining area. One of the obligations of mining companies is to develop a Community Empowerment Program (CEP) based on the needs of the community around the mine. The purpose of this activity is to provide participatory-based community assistance whose final product is an inventory of community needs which will later be given to mining companies around Matabura Village to be included in the CEP document. The method used is through Focus Group Discussion (FGD) activities and interviews with a sample of 50 respondents. The results of this activity showed that there was a change in the area of the village boundary from 551 Ha to 399.40 Ha and the number of hamlets from 2 to 3 hamlets and the results of interviews and Focus Group Discussions (FGD) recommended programs to be proposed, namely: Scholarship Program, Repair of Places of Worship, Normalization rivers, Utilization of Human Resources, Sports Facilities, Changing Land Profits, Liming or dolomite on plantation land.
PRESIPITASI BESI DARI LARUTAN HASIL PELINDIAN BIJIH NIKEL LATERIT Wahab Wahab; Dandy Ashari; Deniyatno Deniyatno; Firdaus Firdaus; Erwin Anshari; Marwan Zam Mili; Rizky Awaliah Nafiu; Alrum Armid
Jurnal Teknologi Mineral dan Batubara Vol 18 No 3 (2022): Jurnal Teknologi Mineral dan Batubara Edisi September 2022
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No3.2022.1176

Abstract

Presipitasi besi dari larutan hasil pelindian bijih nikel laterit merupakan tahapan yang harus dilakukan sebelum larutan diolah lebih lanjut. Tujuan penelitian ini adalah untuk mengetahui pengaruh varibel proses terhadap presipitasi besi serta mempelajari kinetika proses presipitasi. Dalam penelitian ini, presipitasi besi dilakukan menggunakan senyawa natrium hidroksida (NaOH). Variabel yang diamati yaitu temperatur (25, 40, 55, 70, dan 85°C) konsentrasi NaOH (10, 20, 30, dan 40% w/v), dan waktu (15, 30, 45, 60, dan 75 menit). Studi kinetika mengacu pada persamaan reaksi homogenous irreversible orde I, orde II dan orde III. Hasil penelitian menunjukkan bahwa peningkatan temperatur, konsentrasi NaOH, dan waktu meningkatkan persentase presipitasi besi. Persentase presipitasi besi tertinggi sebesar 84,868% dicapai pada pada temperatur 85°C, konsentrasi NaOH 40% w/v, dan waktu 75 menit. Studi kinetika menunjukkan bahwa reaksi presipitasi besi dari larutan hasil pelindian mengikuti reaksi irreversible orde III.
SURVEI POTENSI KEPURBAKALAAN GUA – GUA DI KECAMATAN WIWIRANO, KABUPATEN KONAWE UTARA MELALUI PENDEKATAN SISTEM INFORMASI GEOGRAFIS (SIG) sandy suseno; Adha Mashur Sajiah; Ahmad Firman Tarta; Danial Danial; Wahab Wahab
SANGIA: Jurnal Penelitian Arkeologi Vol 3 No 2: SANGIA, JURNAL PENELITIAN ARKEOLOGI, VOLUME.3, NUMBER.2, 2019
Publisher : Laboratorium Jurusan Arkeologi Fakultas Ilmu Budaya Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/sangia.v3i2.734

Abstract

This study aims to determine the distribution of caves / niches that are potentially archaeological in the District of Wiwirano, North Konawe as well as identifying archaeological remains found at these sites. Next, the locational cave / niche aspect is examined with a Geographic Information System (GIS) approach. Through the GIS approach, the data summarized will be visualized in the form of a thematic map containing the distribution of caves / niches in the District of Wiwirano, North Konawe including archaeological information contained in these caves / niches.Data collection was carried out by direct observation in the Wiwirano District area, North Konawe. At the time of the observation, the astronomical coordinates of the cave / niche were recorded and also the archaeological remains at that location were recorded. The next step, classifying the collected data is followed by digitizing the data for mapping through the GIS approach. The expected results of this study are to become the main reference about the distribution of caves / niches in the District of Wiwirano, North Konawe. In addition, the results of this study can reveal the potential of archaeological remains in the region. This is in accordance with UHO's strategic objectives namely the provision of quality, relevant and competitive education services as well as the achievement of improved quality of research and service that has competitiveness, and community development rural-oriented. This research is also in line with UHO's strategic goal of producing a database that can be a reference for UHO archeology students in conducting their final project research.
Co-Authors Adha Mashur Sajiah Ahmad Firman Tarta Ali Okto Alrum Armid Dandy Ashari Danial Danial Daniyatno Daniyatno Deniyatno Deniyatno Deniyatno Deniyatno Deniyatno Deniyatno Dian Permana Erwin Anshari Firdaus Firdaus Firdaus Firdaus Fitra Saleh Harisma Harisma Jufri Karim La Ode Nafiu Marthines Saranga Marwan Zam Mili Marwan Zam Mili Marwan Zam Mili Marwan Zamili Masri Masri Muh. Nuzul Khaq Musnajam Musnajam Rizky Kumalasari sandy suseno sandy suseno Yayat Iman Supriyatna Yayat Iman Supriyatna