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Journal of Energy and Mechanical Engineering
Published by Universitas Nahdlatul Ulama Gorontalo
ISSN : 30309867     EISSN : 30465850     DOI : 10.62299
Core Subject :
Menerima artikel hasil penelitian dan review. Jurnal ini menjadi wadah untuk menuangkan gagasan baru serta sarana presentasi di bidang sains yang mendukung pemahaman lebih baik mengenai permasalahan dan isu-isu dalam sains dan teknologi terapan, khususnya terkait: energi baru dan terbarukan (emisi dan pembakaran, bahan bakar dan pelumas, perpindahan massa dan panas, mesin pompa kalor, teknik termal dan fluida, komputasi energi, teknik pembangkit listrik, energi skala nano dan piko, material energi, serta topik lain seputar teknik konversi energi); teknologi pengelasan dan pengecoran, material suhu tinggi, material komposit, nanomaterial, komputasi material, teknologi korosi, teknologi pengujian tanpa merusak (NDT), material cerdas, serta topik lain seputar material dan metalurgi; manajemen teknik, teknologi perkakas dan pemesinan, material perkakas, CNC dan komputasi manufaktur, sistem manufaktur, teknologi pemrosesan material terkini, mikropemesinan, metrologi, serta topik lain seputar manufaktur dan ilmu mekanika lainnya.
Arjuna Subject : -
Articles 31 Documents
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BIOCHAR MULTIFUNGSI DALAM EKONOMI SIRKULAR: REKAYASA PROSES, HUBUNGAN STRUKTUR–FUNGSI, DAN JALUR IMPLEMENTASI UNTUK ENERGI, LINGKUNGAN, PERTANIAN, SERTA MATERIAL MAJU syamsu Akuba; Romi Djafar; Abd. Rasid Salim
Journal of Energy and Mechanical Engineering Vol. 3 No. 2 (2026): Journal of Energy and Mechanical Engineering (Juni)
Publisher : Fakultas Sains dan Teknologi - Universitas Nahdlatul Ulama Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62299/jeme.v3i2.42

Abstract

Biochar has evolved from a biomass carbonization product into an engineered material platform for carbon storage, energy, remediation, agriculture, and composite applications. However, recent literature remains fragmented across sectors, leaving the relationships among feedstocks, conversion conditions, structure, function, and sustainability impacts insufficiently understood. This review synthesizes the bibliographic records and abstracts provided in the reference dataset through title- and DOI-based deduplication, thematic relevance screening, and a comparative analysis of studies published over the past five years. The analysis is structured around a feedstock–process–structure–function–impact framework. The results show that temperature, residence time, atmosphere, heating rate, and activation govern the trade-offs among carbon yield, aromatization, surface functional groups, porosity, reactivity, and process emissions. Unmodified biochar is adequate for certain fuel and soil amendment applications, whereas pollutant and carbon dioxide capture, catalysis, energy storage, and composite reinforcement generally require surface engineering or hybrid architectures. Field evidence indicates that the optimum application rate is nonlinear and depends on the specific biochar–soil–plant combination; increasing the application rate does not necessarily produce greater benefits. In water treatment, laboratory adsorption capacity alone is insufficient to demonstrate feasibility because regeneration, leaching, ion competition, reactor configuration, and cost determine actual performance. This review proposes an intended-use-based biochar quality passport, tiered testing from the material to the system level, and life-cycle assessment that accounts for the product’s end-of-life fate. The novelty of this synthesis lies in integrating applications that are commonly examined separately and establishing a decision-making framework for matching biochar properties with their intended functions, risks, and implementation scales. This approach helps prevent universal claims and directs research toward long-term demonstration, standardization, and industrial integration that can be verified technically, economically, and environmentally across different regions.

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