In this study, carbon quantum dots (CQDs), which were synthesized from arabica coffee ground-derived activated carbon, have been successfully employed as a fluorescence sensor to detect Fe3+ ions. CQDs fabricated using microwave heating for 5–10 min, emitted vibrant blue light at 455 nm when exposed excitation 365 nm. Dynamic scattering (DLS) analysis revealed that the average size of was 10.12 with yield 6.01%. Fluorescence detection developed sensing Fe3+, Pb2+, and Cr3+ The addition three...

The study aims to generate and characterize a bio-nanocomposite film derived from sweet potato starch Moringa oleifera leaf extract carbon quantum dots (CQDs) Arabica coffee grounds employing the solvent casting method. effect of various concentrations CQDs (0–400 ppm) was investigated on physicochemical properties, UV-barrier, antioxidant biodegradability bionanocomposite (BNC) films. morphological surface examined using scanning electron microscopy (SEM). Thermogravimetric analysis (TGA)...

Abstract Cellulose nanofiber (CNF) gel has been obtained from TEMPO-oxidized differently treated lower part of empty fruit bunches (LEFB) oil palm. Three kinds materials were initially used: (i) α-cellulose, (ii) raw LEFB fiber two-times bleaching, and (iii) three-times bleaching. The nanofibers (CNF1, CNF2 CNF3, respectively) then characterized using several methods, e.g. FT-IR, SEM, UV-Visible, TEM, XRD TGA. at different levels bleaching showed that the Kappa number decreased with increase...

This research was aimed to investigate the effect of Co and Co-Mo metal loaded on Sarulla Natural Zeolite which has been activated calcined (SNZ-Cal) as supports for better understanding characterization catalytic activity hydrocracking MEFA rubber seed oil. The added through a wet impregnation method using Co(NO3)2·6H2O (NH4)·6Mo7O24·4H2O precursor salts. catalyst oxidized at 500 °C 2 h within oxygen gas flow, followed by reduction process with H2 flow similar condition obtain catalysts....

This study aims to determine the composition fiber natural of bamboo, pineapple leaf and coir in single hybrid composite see best characteristics tensile strength flexural test by using a Universal Testing Machine (UTM) observe effect on microstructure through optical scanning electron microscopy. Bamboo, Palf have synthesis from was used as reinforcement polyester hand lay up or hot-compression moulding while filler:matrix (45%:55wt.%, 70%:30wt.% 15%:85wt.%). From variation volume fraction...

While the utilization of wood as a raw material in related industries has been increasing with population increasing, availability from natural forests continued to decline. An alternative this situation is manufacture particleboard non-wood lignocellulose materials through modification sandwich (SPb) using bamboo strands reinforcement. In study, strandsof belangke (Gigantochloa pruriens W) and tali apus) were utilized. The particles included sugar palm fibers, cornstalk, sugarcane bagasse....

This study utilizes the microwave method to determine optimum conditions for synthesizing carbon quantum dots (CQDs) trough activated from coffee arabica grounds. Response Surface Methodology (RSM) with a Box-Behnken Design was used optimization (BBD). In this study, 200-mesh obtained grounds as raw material CQDs using method. The independent variables that are estimated influence measured parameters mass of (X1: 0.5-1.5 g), synthesis time (X2: 3-7 minutes) and power (X3: 60-100 %). were...

This research explores utilizing abundant, economical cassava as a raw material for producing cationic starch in Indonesia. Cationic was synthesized by etherifying with CHPTAC monomer at 50-90°C. Successful modification confirmed via FTIR and NMR spectra. Characterization revealed the 80°C product exhibited optimal properties: high degree of substitution (0.35) reaction efficiency (98±1.2%). Its amorphous morphology impacted thermal resistance compared to crystalline forms. economically...

Oil palm empty fruit bunch (EFB), nowadays, has not been fully utilised economically and is always subjected to environmental concern, whereas its handling in the oil mill also consumes unproductive cost energy. In this work filled polypropylene composites were prepared using solution technique reactive processing a screw extruder. Results indicate that first technique, tensile strength of increases with increasing loading up 20% (by weight) presence 3% acrylic acid 0.01 mol ratio dicumyl...

In this research, microencapsulation of Zingiber cassumunar roxb essential oil (EO) with chitosan and waste oil-palm trunk fiber as a packaging materials were examined. Encapsulation process was done by spray drying method ratio between palm trunk, chitosan, ginger denoted OPT, Chi EO, respectively namely 3:0:1, 0:3:1 2:2:1 investigated. The material characterisations using FTIR, GC-MS, XRD, PSA SEM. results suggested that or the strong sharp absorption peak at 1743 cm−1, 1154 cm−1 721...

Tar is a toxic polycyclic aromatic hydrocarbon (PAH) compound that can cause pipe clogging problems and engine damages. Thus, the purpose of this study to assess effectiveness coconut coir from shells (Cocos nucifera) as tar adsorbent integrated into pyrolysis reactor. The process occurred at 400 °C for 4 h in equipment consisted combustion reactor, filter reactor an adsorbent, condenser. results FTIR SEM analysis have shown could be effectively used adsorbent. GCMS test showed no PAH...

The characteristic of cellulose nanofiber-based (CNF) hydrogel isolated crosslinked with two different agents such as N,N′-methylene bisacrylamide (MBA) and chitosan were investigated for the first time from abaca fiber (Musa textilis). isolation α-cellulose was performed using acid hydrolysis alkalization, subsequently treated steam explosion (thermomechanochemical process) to finally obtain CNF. In addition, CNF hydrogels characterized determine chemical, thermal, structural, morphological...

The two main problems faced by the conventional coconut shell charcoal industry are low yield and smoke pollution.Therefore, purpose of this study is to modify pyrolysis reactor equipped with tar scrubbers as a solution problem pollution yield, improve quality charcoal.A size 2.4 x 1.2 m heat coming out rocket stove can be blown from bottom, thus it propagate evenly through perforated plate.The was designed circulating pipes places for channeling non-condensable gases used fuel.Produced rose...

PLA (Poly Lactid Acid) - Bentonite polymer nanocomposite which is a combination of natural and nanometer-scale inorganic substances created through three processes, mixing using melt blending, molding with hot press specimens Standard ASTM D 638 Type IV drying. In this study, combined two types bentonite obtained from different areas to find differences in the quality results characterization. To optimize performance filler, before mixing, have furificate first (NaPO3)6 also open interlayer...

The aim of this paper is introducing new natural fibers for use as fillers in a polymeric matrix enabling production cost-effective, biodegradable, and lightweight composites load carrying structures. Abaca (Musa textilis) fiber, one such kind, rich cellulose relatively inexpensive, abundantly available. In study, investigations on the physical, chemical, mechanical properties abaca fiber are carried out, density, cellulose, hemicellulose, lignin determined experimentally. Analysis tensile...

The anatomical characteristics of the stem belangke bamboo (Gigantochloa pruriens), which is native in North Sumatra, Indonesia, were examined to attain valuable information for identification and effective utilization. number type vessel bundles fiber metaxylem dimensions longitudinal (bottom, middle, top) radial (outer, central, inner) directions culm investigated by optical microscopy. vascular distributed unevenly arranged alternately, as shown cross-sectional images culms. proportion...

Today, the application of natural fiber as raw material for textile become wider, such from pineapple, bamboo, hemp, jute, flax, kenaf, and banana. The is abundance can be cultured, it will a big potential textile. aim this research to analyze characteristic durian North Sumatera an alternative fiber. was analyzed using FT-IR, SEM, DSC also chemical physical were characterized. analysis showed contained cellulose (57-64%), hemicellulose (30.7%), lignin (13.6%), absorbed water (0.08%). has...

The effect of nanocrystalline cellulose (NCC) and nanofiber (NFC) was estimated as a means reinforcing compatibilizing agent polypropylene/ cyclic natural rubber (PP/CNR) blend in terms mechanical thermal properties. morphological NCC NFC on the PP/CNR property determined through several characterization techniques, i.e. SEM, contact TGA/DTG. Scanning electron microscopy (SEM) images revealed that addition became more homogenous than without nanocellulose. improvement nanocomposites also...

The composite formation from PLA /PCL mixture with bentonite as filler has been carried out by melt intercalation method. Bentonite was obtained the local area of Bener Meriah, in Aceh which modified CTAB surfactant. is a swelling (Na+) bentonite. mass ratio PLA: PCL varied at 60:40, 50:50, and 40:60, additive 3%, 5% 8% total weight mixture. Temperature heating duration to were 180°C 20 minutes, respectively. In process forming sample accordance ASTM D-638 standard. produce white bone...

Biobased becomes one of the new breakthrough in smart engineering, especially biomedical applications, such as tissue engineering that serves a supporting physical structure to trigger growth skin tissue. From various studies which had been done, it was known optimal healed wounds or injuries relatively short time. In this study, natural polymer based e.g Poly(Lactic Acid) (PLA)/Chitosan Nanocomposites made. PLA synthesized from saba banana (Musa acuminata) raw material using Ring-Opening...