Jurnal Riset Teknologi Pencegahan Pencemaran Industri

Study of The Influence of Extract Cocoa Pods (Theobroma Cacao) as a Preservative Ingredient on Mahoni Woods (Swietenia Mahogany) Through Cold Soaking on Mechanical Properties

2025-01-31T08:44:28+00:00

An attempt has been made to extend the service life of mahogany wood (Swietenia mahogany) by preserving it. The purpose of this study was to determine the mechanical properties of mahogany wood after cold soaking with preservatives of cocoa pods extract (Theobroma cacao). This research uses an experimental method of cold soaking which is carried out in the Material Testing Laboratory of the Mechanical Engineering Department of Padang State Polytechnic. The preservation process used cacao pod extract preservative solution at concentrations of 0%, 3%, 6%, 9%, 12%, and 15%. The observed responses were the preservative retention values and mechanical properties (compressive strength parallel to the fiber direction, flexural strength, and surface hardness) of the wood. The preservation method applied was cold soaking for 120 hours. The increase in retention value was directly proportional to the increased concentration of extract added. The improved properties of wood (compressive strength in the grain direction and flexural strength) also increased with increasing extract concentration. The results obtained showed that the highest value was obtained at a 15% concentration of the added extract with a retention of 7.6078 kg/cm2, a compressive strength parallel to the fiber of 227.92 kg/m2, and a flexural strength of 387.82 kg/m2. This data shows that cocoa pods extract has the potential to be used as an environmentally friendly wood preservative.

Environmental Pollution and Threats to the Future of Sustainable Ecotourism: Challenges and Solutions in Riau Province

2025-04-23T05:55:23+00:00

Riau Province has great potential in ecotourism development, especially in coastal areas, mangrove forests, and tropical peatlands. However, this development is faced with serious challenges in the form of environmental pollution that threatens the sustainability of natural tourism destinations. This study aims to identify the forms of pollution that occur in Riau's ecotourism areas, analyze their impacts on ecosystems and tourism activities, and formulate strategic solutions for sustainable management. The method used is a qualitative approach with case studies in several leading ecotourism locations such as Mangrove Ecotourism in Bengkalis and Zamrud Lake tourism in Siak. Data were collected through interviews, observations, and field documentation. The findings of this study clearly demonstrate that environmental pollution—particularly from domestic waste, peatland fires, and land-use changes—poses a significant threat to the ecological integrity and long-term viability of ecotourism destinations in Riau Province. Without immediate and coordinated intervention, these threats risk undermining the region’s ecotourism potential. Therefore, this study concludes that sustainable ecotourism in Riau can only be achieved through an integrative and participatory management model that involves capacity building for local communities, strict enforcement of environmental regulations, and multi-stakeholder collaboration. Such strategic efforts are essential to preserve the natural assets of Riau and ensure that ecotourism continues to provide ecological, social, and economic benefits in the future.

The Effect of Kaolin Addition as a Binder in Making Pellets Iron Concentrate

2025-01-31T08:45:00+00:00

Pellets iron concentrate are formed from fine particles in the form of iron ore concentrate or iron sand after the ore has undergone the agglomeration stage and taken the shape of tiny, marble-like lumps. Iron pellets are also an important raw element in the steelmaking process. The physical, chemical, and metallurgical standards for iron pellet quality vary depending on the specific processing method used to create the pellets. The purpose of this research is to make iron pellets using iron sand derived from zircon sand processing byproducts by adding binders. There are three primary phases in the production of iron pellets, Mixing of iron pellet materials, the second balling process and the third induration process. Materials needed to make iron pellets include water, binder, and iron ore/sand. Typically, bentonite, limestone, and/or similar compounds are used as binder. However, in this study kaolin was used as a substitute for commercial binders with variations of (5; 10; 15 and 20%) binder. Based on the test results kaolin greatly affects the hardness of iron pellets. This can be seen from the results of the Compression Strength Test an average of 107.8 to 156.9 N/Pellet or the equivalent of 11 to 16 Kg/Pellet and the results of the drop test pellets broke at a height of 3 - 4 meters. This indicates that the pellets contain good qualities and exhibit resistance to impacts or mechanical pressure that may arise during transportation or utilization.

Analysis of mixing coal and biomass fuels on industrial boiler performance

2024-08-01T05:03:05+00:00

The aim of this study is the experimental investigation and characterization of the effects of using biomass mix and coal fuels boilers on the efficiency and environmental impact of industrial boiler combustion. The experimental data collected relates to the coal boiler and biomass mix fuel boiler, and boiler performance parameters. Two different methods for controlling coal and biomass mix fuel feed are considered. One method involves manually controlled biomass mix feed through the boiler control system and one more for use full coal boiler. The boilers control system regulates the intake of coal and biomass mix fuel into the furnace based on combustion chamber temperature and pressure parameters. The results shows that the biomass mix boiler does not significantly affect the combustion process but reduces fuel consumption, better than coal boiler. The findings are expected to provide valuable insights for industry stakeholders and policymakers, promoting the adoption of more sustainable and cost-effective fuel alternatives in industrial applications.

Soil Characteristics in Post-Mining Reclamation Zones of a Clay Mine PT Solusi Bangun Indonesia Tbk Cilacap

2025-04-09T02:16:46+00:00

Former clay mining areas often face soil degradation that makes it difficult for vegetation to thrive, even after reclamation. This study explores the physical and chemical characteristics of soil in the reclaimed land of PT Solusi Bangun Indonesia Tbk in Cilacap, aiming to understand how effective the rehabilitation efforts have been. Soil samples were taken from six locations, chosen based on differences in vegetation cover and land elevation. The analysis focused on physical properties such as pH, moisture content, temperature, specific gravity, and porosity, along with chemical aspects like macronutrient levels and heavy metal content. Results showed that soil pH ranged from neutral to slightly acidic, with moisture content varying across the site. While macronutrients were generally adequate for plant growth, their distribution was uneven. Some heavy metals, particularly cadmium and silver, were found in concentrations above recommended environmental limits, whereas lead and arsenic levels remained within safe thresholds. Overall, the reclamation process has helped improve soil conditions, but additional steps—like adding lime, incorporating organic matter, and applying specific remediation techniques—are needed to boost soil fertility and reduce contamination risks. Continued monitoring and adaptive strategies will be key to sustaining the health of the reclaimed landscape