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All Journal Journal of Metallurgical Engineering and Processing Technology
Rijalul Haq, Shofa
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Chemical Engineering, Chemistry & Bioengineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analysis of Humic Acid Content in Reject Coal as an Organic Fertilizer in Coal Mining Reclamation Areas Nastigor Nasution, Roy; Nursanto, Edy; Ernawati, Rika; Rijalul Haq, Shofa
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11159

Abstract

An important effort to restore the productivity of degraded land is land reclamation, especially in areas where ecosystems have been destroyed. The use of organic materials that can improve soil quality is one of the methods used in the reclamation process. Humic acid, an organic component found in natural organic materials such as humus and compost, has attracted attention as an organic fertilizer material that can be used in reclamation, the aim of this research is to analyze the use of humic acid as an organic fertilizer in the reclamation process in the Spice Land area, South Kalimantan. This research was carried out through field and laboratory studies, looking at how humic acid affects the properties of degraded soil, pH, height and stem diameter. The results showed that the application of humic acid significantly improved the quality of reclaimed soil by increasing the soil's capacity to store water and increasing its fertility in addition to the physicochemical benefits, the use of humic acid helps the environment. By using it as an organic fertilizer in the reclamation process, you no longer need to use synthetic chemical fertilizers, which can have a bad impact on the environment. It also supports sustainable agricultural practices ,in reclamation, the use of humic acid as an organic fertilizer shows great potential to increase the success rate of restoration of degraded land. Consequently, this research encourages environmentally friendly practices for the restoration of damaged ecosystems and helps sustainable land management.
The Overview of Indonesia Coal Bed Methane Resources Nursanto, Edy; Rijalul Haq, Shofa; Inmarlinianto, Inmarlinianto
Journal of Metallurgical Engineering and Processing Technology Vol 4, No 2 (February 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v4i2.11170

Abstract

Coal Bed Methane (CBM) is generated by coal layers, there is a preceding process, which is the formation of coal (coalification). Coalification begins with the burial of organic material originating from plants. The burial, lasting hundreds of millions of years, results in increasing temperatures and pressures, causing physical and chemical changes to the organic material. Methane gas, the largest component of CBM, is formed. Two processes: biogenic and thermogenic. In the early stages of coalification, biogenic methane gas is produced as a byproduct of the activities of decomposing microorganisms (anaerobic bacteria), similar to what occurs in the decomposition of organic waste.  Only about 5 to 20 percent is stored within coal. There are four mechanisms for gas storage in coal: absorption, adsorption, free gas, and gas dissolved in water.  Among these four mechanisms, adsorption is the most significant, accounting for 98 percent of the stored CBM in a combined system of micropores (coal matrix) and cleats. Coal Bed Methane resources in Indonesia can be found across South Kalimantan, East Kalimantan, Sumatra, and Java.
Co-Authors Edy Nursanto Inmarlinianto Inmarlinianto, Inmarlinianto Nastigor Nasution, Roy Rika Ernawati