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Application of Mine Dewatering Methods to Reduce Wastewater Pollution in The Environment: Implications for Andesite Mining Adnyano, A.A Inung Arie; Prastowo, Rizqi; Bahy, Muhammad Nauval; Hikmahtiar, Syouma; Said, Ahmad; Ashadi, Abdul Latif
International Journal of Hydrological and Environmental for Sustainability Vol. 1 No. 1 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Wastewater pollution in mining areas often occurs and becomes a problem in the surrounding groundwater aquifer system. One of the efforts to determine the distribution of wastewater pollution is to calculate the discharge and volume of wastewater. In this study, an open channel in the form of a ditch or commonly referred to as a drainage system is carried out to determine the total water discharge entering the research location, design the dimensions of the sump and design the optimal cross-sectional dimensions of the ditch to overcome the discharge of water that comes out and pollutes the environment. The method used is to make an open channel in the form of a trapezoid to be used around the andesite rock mining site which then drains the mine water to the setlingpond. Efforts to drain the water that has entered the main sump (mine dewatering system) are carried out by making wells, after which the waste water is channeled into the settling pond using a pump. From the results of the study, information was obtained that the total water discharge entering the sump was 235,175 m so that the volume of the sump made was 300 m with dimensions of top area: 20m x 10m, bottom area: 10m x 10m, with a depth of 2m for total water discharge for ditches. 0.0237 m so that the volume of the trench made is 0.228 m.

Three-dimensional Magnetotelluric Inversion and Magnetic for The Characterization of The Geothermal Field Reservoir Zone “X” Asrowi, Ridho Hanan; Daud, Yunus; Ashadi, Abdul Latif; Hikmahtiar, Syouma; Said, Ahmad
International Journal of Hydrological and Environmental for Sustainability Vol. 2 No. 3 (2023): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v2i3.301

Geothermal as an alternative energy source that is renewable and environmentally friendly has an important role in providing domestic energy needs. Exploration is one of the most important stages in the development of geothermal energy because it can minimize the risk at the stage of exploitation and development. Geophysical methods such as geomagnet and magnetotelluric are one of the methods used in exploration. Magnetic method can provide information on the description of rock demagnetization due to the presence of heat source. However, the magnetotelluric method will provide information about rock type resistance on geothermal fields. The existence of heat source using the geomagnetic method is represented by a low anomaly value as an indication of demagnetized rocks. The results of 3D inversion processing show a low value of type resistance in the area and form an updome. The correlation of the two results of processing the data can be seen in the southern part of the "X" geothermal field research area. Based on 3D Inversion modeling it can be seen the depth of the "X" Base of Conductor (BOC) geothermal system ranges from 1000 m to -800 m with resistivity â‰¤ 10 Î©m which is suspected as volcanic rocks. Geothermal reservoir is at a depth of 1000 m to -2000 m with a moderate resistivity of 40 - 60 Î©m which is suspected as an andesite volcanic rock, with temperature estimates ranging from 218o C to 255o C.

A Review of Insights into Algae as a Sustainable Bio-based Photocatalyst for Environmental Remediation Ramadhani, Ramadhani; Said, Ahmad
International Journal of Hydrological and Environmental for Sustainability Vol. 3 No. 1 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i1.387

Algae have recently emerged as a promising photocatalyst material due to their abundancy, low cost, and environmentally friendly nature. This review summarizes recent progress on utilizing algae as bio-based photocatalysts. Eutrophication and abundance of algae which make it an ideal candidate as a sustainable photocatalyst source, have been discussed. Recent work on synthesis methods such as hydrothermal treatment, calcination, and templating to produce photocatalytically active algae nanoparticles (NPs) has been reviewed. Photocatalytic activity of algae-based materials have been studied such as wastewater treatment, dye removal, and heavy metal remediation. Finally, strategies to further enhance algae's photocatalytic performance, including coating and doping with metals, coupling with graphene, and heterogeneous integration are highlighted here. To wrap up, this review underscores the exciting potential of algae as a sustainable and effective next-generation photocatalytic material.

A REVIEW: FACILE AND GREEN SYNTHESIS OF MARINE MACROALGAE AND ITS PHOTOCATALYTIC PERFORMANCE ON POLLUTED WATER REMEDIATION ., Ramadhani; Said, Ahmad
Journal of Aquatropica Asia Vol 9 No 1 (2024): Journal of Aquatropica Asia
Publisher : Jurusan Akuakultur, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/joaa.v9i1.5245

This review critically examines the burgeoning field of research focused on the environmentally benign synthesis of metallic nanoparticles exploiting the unique properties and diverse array of marine macroalgae species. Harnessing macroalgal biomolecules as reductants and stabilizers, numerous findings have discovered the biosynthesis of silver, gold, iron oxide, zinc oxide, and other nanoparticles through a sustainable "phycosynthesis" technique without toxic chemicals. Extensively characterized for their morphologies and properties, these algae-mediated nanoparticles exhibit notable photocatalytic activities in degrading various organic dyes and pollutants. Particularly, over 90% degradation efficiency has been achieved for dyes like methylene blue, methyl orange, and rhodamine B utilizing nanoparticles produced from macroalgae such as Sargassum horneri, Syringodium isoetifolium and Ulva lactuca. The mechanism is hypothesized to involve photoexcitation generating reactive oxidative species on the nanoparticle surface that rapidly cleave dye molecules. Improved understanding of the roles of macroalgal biomolecules and optimization of synthesis conditions may enable enhanced catalytic performances. With their widespread availability and biodiversity remaining largely untapped, marine macroalgae prove promising as renewable resources for developing eco-friendly water remediation technologies through metal/metal oxide nanocatalyst design.

Microbially Induced Calcium Carbonate Precipitation as Bio-Mimetics Material in Applications of Slashing Carbon Emission and Carbon Sequestration: A Review Ramadhani, Ramadhani; Said, Ahmad
Cipasung Techno Pesantren: Jurnal Ilmiah Vol 18 No 1 (2024): Cipasung Techno Pesantren: Scientific Journal
Publisher : LPPM Sekolah Tinggi Teknologi Cipasung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Concrete production contributes radically to global carbon dioxide emissions. Microbially induced calcium carbonate precipitation (MICP) is an evolving technology that allows calcium carbonate to be precipitated on concrete through microbial metabolic activity. This review paper aims to present an overview of contemporary findings on the solicitation of MICP for advancing the properties of concrete, reducing carbon emissions from cement production, and elevating carbon sequestration. The results of previous studies have expounded that MICP treatment can enhance the compressive strength, stiffness, and durability of concrete. More importantly, MICP technology propounds the potential to moderately supersede cement content in concrete, thereby lowering carbon emissions from cement production. The microbial precipitated calcium carbonate may also accelerate the sequestration of carbon dioxide. While more research is still needed, MICP shows capacity as a sustainable technique for developing low-carbon concrete materials.

Bank Indonesia's Strategy in Accelerating Sharia Economic Growth Said, Ahmad; Susanto, Eko
Journal of Islamic Economy Vol. 1 No. 3 (2024): NOVEMBER-JOIE
Publisher : Pt. Anagata Sembagi Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62872/1p7ps815

Seconomy has become an integral part of the Indonesian economic system, especially after the implementation of policies that support the sustainability of this sector. In an effort to accelerate the growth of the sharia economy, Bank Indonesia (BI) plays an important role with various strategic policies implemented to strengthen this sector. The strategies implemented by BI not only include monetary policy, but also financial inclusion, development of the sharia capital market, and strengthening of sharia financial institutions. This study aims to explore more deeply the efforts of Bank Indonesia in encouraging the development of the sharia economy and its impact on overall economic growth. The research method used in this study is a qualitative descriptive approach with analysis of literature studies and relevant secondary data. Based on the analysis conducted, the strategies implemented by Bank Indonesia have proven effective in increasing the contribution of the sharia economy sector to Indonesia's Gross Domestic Product (GDP). Bank Indonesia, through comprehensive policies, provides significant impetus for the growth of the sharia economy, both in terms of macroeconomic policies and the real sector.

A REVIEW: FACILE AND GREEN SYNTHESIS OF MARINE MACROALGAE AND ITS PHOTOCATALYTIC PERFORMANCE ON POLLUTED WATER REMEDIATION ., Ramadhani; Said, Ahmad
Journal of Aquatropica Asia Vol 9 No 1 (2024): Journal of Aquatropica Asia
Publisher : Program Studi Akuakultur, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/joaa.v9i1.5245

This review critically examines the burgeoning field of research focused on the environmentally benign synthesis of metallic nanoparticles exploiting the unique properties and diverse array of marine macroalgae species. Harnessing macroalgal biomolecules as reductants and stabilizers, numerous findings have discovered the biosynthesis of silver, gold, iron oxide, zinc oxide, and other nanoparticles through a sustainable "phycosynthesis" technique without toxic chemicals. Extensively characterized for their morphologies and properties, these algae-mediated nanoparticles exhibit notable photocatalytic activities in degrading various organic dyes and pollutants. Particularly, over 90% degradation efficiency has been achieved for dyes like methylene blue, methyl orange, and rhodamine B utilizing nanoparticles produced from macroalgae such as Sargassum horneri, Syringodium isoetifolium and Ulva lactuca. The mechanism is hypothesized to involve photoexcitation generating reactive oxidative species on the nanoparticle surface that rapidly cleave dye molecules. Improved understanding of the roles of macroalgal biomolecules and optimization of synthesis conditions may enable enhanced catalytic performances. With their widespread availability and biodiversity remaining largely untapped, marine macroalgae prove promising as renewable resources for developing eco-friendly water remediation technologies through metal/metal oxide nanocatalyst design.

Application of Major and Trace Elements for Detecting the Origin of Groundwater: Lithium Enrichment in Ain Al-Harrah Hot Spring Influenced by Red Sea, Saudi Arabia Umam, Rofiqul; Cengiz, Korhan; Said, Ahmad
International Journal of Hydrological and Environmental for Sustainability Vol. 3 No. 3 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i3.522

Major and trace elements are valuable tracers for understanding the groundwater cycle. In groundwater flow path applications, these elements help delineate groundwater flow paths and identify areas of recharge and discharge. While in geothermal systems, the major and trace elements can indicate the contribution of deep hydrothermal fluids. In this study, we used major and trace elements as a groundwater tracer used to determine the origin of the Ain Al-Harrah hot spring in Saudi Arabia. Water sample data collection was taken from previous studies. In the data collection process, pre-washed 0.5 L polyethylene bottles were used to collect a total of five water samples from Ain Al-Harrah hot spring, Saudi Arabia. To prevent contamination, all samples were stored in a refrigerated room to maintain their chemical composition until the analysis process. The analytical results of the study showed that most of the hot water samples from Ain Al-Harrah hot spring, Saudi Arabia had been influenced by seawater which exceeded the limit value of x = 0.86 in the Na/Cl ratio. In addition, the value of y = 0.1 at the SO4/Cl ratio is the horizontal limit between the two. The interpretation of Cl against Cl/Li also confirms that the hot springs of Ain Al-Harrah, Saudi Arabia have been largely mixed with surface water. In addition, it is likely that the origin of the hot springs of Ain Al-Harrah, Saudi Arabia is also from seawater intrusion from red sea that has undergone mixing by meteoric water.

Pelatihan Penguatan Pendidikan Karakter Remaja Upaya Pencegahan Penggunaan Narkoba Di Karang Taruna Karet Setia Budi Maududi, Mukhlish Muhammad; Rahman, Nurlina; Said, Ahmad
Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) Vol 9, No 1 (2025): Jurnal Pelayanan dan Pengabdian Masyarakat (PAMAS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM Universitas Respati Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/pamas.v9i1.2359

Character education can be interpreted as ethics education, moral education, value education, character education, which aims to develop students' abilities in determining good and bad, maintaining what is good, and applying these good in everyday life. The purpose of implementing this Community Service is to increase Partners' knowledge about Character Education so that it can become a stronghold in the person of each participant to dare to refuse invitations to use Narcotics. The implementation method in this counseling activity uses face-to-face and still pays attention to health protocols with the capacity of counseling participants around 15 participants of the Management and Members of Karang Taruna Kelurahan Karet, Setia Budi District, South Jakarta. From the results of the Community Service Program activities, results were obtained based on the Post-test , there was an increase in knowledge of the dangers of narcotics and sanctions for users and dealers and an increase in knowledge of character education.

Climate Classification, Hydrological, Agricultural, and Assessment of Climate Change Impacts Analysis in City of Pangkalpinang, Bangka Belitung Island Province, Indonesia Ramadhani; Said, Ahmad
Cipasung Techno Pesantren: Jurnal Ilmiah Vol 19 No 1 (2025): Vol. 19 No. 1 (2025): Cipasung Techno Pesantren: Scientific Journal
Publisher : LPPM Sekolah Tinggi Teknologi Cipasung

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This study assessed climate classification, hydrological conditions, and agricultural vulnerabilities in Pangkalpinang City, Bangka Belitung Province, Indonesia, using a 65-year (1959-2024) daily meteorological dataset. Climate classification revealed a dominant Af (Tropical Rainforest) type by the Köppen-Geiger method (occurring in 56 out of 66 years) with high precision (0.89-1.0) and a C1'As (perhumid mesothermal) classification predominating according to Thornthwaite (64 out of 66 years). Trend analysis showed a likely not significant temperature increase (approximately +0.02°C/year) and shifting precipitation patterns, with mean annual rainfall at 2289.84 mm and an annual precipitation concentration index (PCI) of 8.924, indicating a moderately irregular rainfall distribution. Hydrological analysis showed an average potential evapotranspiration (PET) of 0.284 mm, a soil moisture content of 99.751 mm, an average surface runoff of 4.577 mm, and 51 annual flood risk events, exhibiting a humid regime. Mean crop water requirement (CWR) was 4.857 relative units, and we observed a strong positive correlation (r=0.969) between the water requirement satisfaction index (WRSI) and crop water needs. The model validation exhibited a root mean square error (RMSE) between 0.1-0.5 and showed a stable Thornthwaite classification even with perturbations and the time series data analysis revealed the variability of parameters and a shift in temperature around the year 2000. These results emphasize the urgent need for localized climate adaptation strategies in Pangkalpinang.

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