AJIE (Asian Journal of Innovation and Entrepreneurship)

Studi Kualitas Bahan Bakar Cair Hasil Pirolisis Limbah Plastik dengan Penambahan Aditif Solketal

2025-12-02T08:44:02+00:00

The increasing volume of global plastic waste, which has exceeded 367 million tons per year, has created a serious environmental problem, particularly in Indonesia, which contributes about 17% of the national waste. Mechanical recycling and direct incineration are considered less optimal due to limited product quality and potential pollution. As an alternative, pyrolysis offers a promising technology to convert plastic waste into liquid fuel (pyrolysis oil) with characteristics similar to conventional fuels. This study utilized even-numbered plastic wastes (HDPE, LDPE, PS) through pyrolysis at 300 °C for 45 minutes with a reactor capacity of 5 kg, producing 1 L of pyrolysis oil per batch. Characterization results indicated that most fuel parameters met ASTM standards, such as Total Acid Number (0.02 mg KOH/g), flash point (61 °C), and sulphur content (0.005%), although some deviations were found in water content, carbon residue, and cetane number. To improve its quality, 0.2% solketal was added as an oxygenated additive, which significantly enhanced engine performance and reduced emissions. Performance testing using a D-4D diesel engine demonstrated improved fuel efficiency, while emission tests showed lower opacity and CO levels, along with more complete combustion indicated by higher CO₂ emissions. These findings confirm that integrating pyrolysis with solketal additives can produce a more efficient, environmentally friendly alternative fuel with potential for application in sustainable energy industries.

Pengaruh Omni Channel terhadap Sales Performance dengan CRM sebagai Variabel Mediasi pada UMKM Sukabumi

2025-10-29T04:30:51+00:00

This study examines the paradoxical phenomenon of declining transaction values among MSMEs in Sukabumi despite a significant increase in the number of businesses and widespread participation in the Indonesian government's “Go Digital” program, yet their sales performance has not increased proportionally. This study aims to analyze the impact of Omni Channel l implementation on Sales Performance, with Customer Relationship Management (CRM) as a mediating variable. A quantitative approach using Structural Equation Modeling (SEM) with AMOS was applied. The population consisted of 110 MSMEs in Sukabumi who had participated in digital literacy training, specifically in internet marketing through WhatsApp Business. Data were collected using non-probability sampling and measured through 11 indicators. The results show that Omni Channel l has a significant direct effect on both CRM (β = 0.572, p < 0.001) and Sales Performance (β = 0.528, p = 0.002). However, CRM does not have a significant direct effect on Sales Performance (β = 0.272, p = 0.075). Furthermore, the indirect effect of Omni Channel l on Sales Performance through CRM was not supported. The structural model explains 51.8% of the variance in Sales Performance and 32.7% in CRM. These findings indicate that, in the context of MSMEs in Sukabumi, the implementation of simple and practical Omni Channel l, especially through WhatsApp Business, plays a more critical role in improving sales performance than formal CRM practices. The absence of a mediating effect of CRM suggests that most MSMEs operate at an operational stage where structured CRM systems have not been optimally implemented or are not yet necessary.

Strategi Infrastruktur Hijau dalam Mendukung Ketahanan Lingkungan Perkotaan di Kawasan Historis Baciro, Yogyakarta

2025-12-02T08:52:50+00:00

Many urban cities in Indonesia face critical challenges such as limited green open spaces, declining environmental quality, and spatial pressure driven by rapid population growth. These conditions threaten urban environmental resilience, particularly in maintaining quality of life and sustainable resource use. This study aims to formulate adaptive green infrastructure planning strategies for the Baciro historical neighbourhood in Yogyakarta to enhance environmental quality while preserving the area’s cultural identity. A qualitative case study approach was employed, combining spatial planning documents, field observations, and stakeholder interviews. The findings indicate that despite limited open spaces, Baciro offers significant opportunities for green infrastructure development through the utilization of residual and vertical spaces, including narrow alleys, riverbanks, and commercial building façades. Proposed strategies include the implementation of vertical gardens, green corridors, revitalized riverfronts, and pedestrian-friendly green streets. These interventions contribute ecological functions—such as water infiltration, microclimate regulation, and air quality improvement—while also strengthening social cohesion through community participation. Furthermore, integrating green infrastructure with the Transit Oriented Development (TOD) concept expands its role in promoting sustainable mobility and liveable urban spaces. This research demonstrates that green infrastructure can serve as a strategic instrument for achieving urban environmental resilience while safeguarding historical heritage in the face of urbanization pressures. The results provide insights and practical implications for planning similar historic neighbourhoods across Indonesian cities that encounter comparable spatial and environmental challenges.