Activated sweetcorn husk (Zea mays saccharata Sturt) treated with H₂SO₄ has been studied for its effectiveness as an adsorbent due to its large surface area and abundant active sites within its structure. This research aimed to determine the optimal adsorbent dosage and the optimum pH for the adsorption of Rhodamine B dye. The adsorption process was conducted in batch mode using various ads…
Activated sweetcorn husk (Zea mays saccharata Sturt.) carbon using H2SO4 has potential as an adsorbent for Rhodamine B dye adsorption. The H2SO4 activator removes impurities, increasing the surface area. This study aims to determine the adsorption efficiency, capacity and kinetic model. The method was used a batch system with variations contact time (30, 45, 60, 75 and 90 minutes) and stirring …
Activated sweet corncob (Zea mays saccharata Sturt.) carbon has potential as an adsorbent material due to its large surface area and abundance of active sites, making it effective for adsorbing Rhodamine B dye. The activated carbon was activated using sodium hydroxide (NaOH), which functions to break lignin and cellulose bonds, thereby expanding the surface area and enhancing the formation of a…
Sweetcorn cob activated carbon (Zea mays saccharata Sturt.) has shown potential as an adsorbent due to its large surface area and abundant active sites, making it effective in adsorbing the dye Rhodamine B. The adsorption capability of sweetcorn cob carbon was enhanced through activation using sodium hydroxide (NaOH). This NaOH activation serves to break the bonds between lignin and cellulose, …
Taxus sumatrana is a plant that grows in the highlands and is included in the Gymnospermae subdivision. The branches of the T. sumatrana have various chemical contents with several biological activities. According to various studies, T. sumatrana contains secondary metabolites such as alkaloids, saponins, flavonoids, and terpenoids. Secondary metabolite extracted from T. sumatrana are know to p…
Oil palm empty fruit bunches (Elaeis guineensis Jacq.) are one of the production residues in the form of solid waste that has the potential as activated charcoal as an Escherichia coli (E. coli) adsorbent. The presence of cellulose in oil palm empty fruit bunches plays an important role as a carbon source in adsorbing E. coli. This study aims to determine the variation of adsorbent dosage and c…
Pyrazolines is a five-ring compound and a heterocyclic compound containing two nitrogen bases formed from chalcone (reaction between ketone and aldehyde) with hydrazine through condensation and cyclization reactions. Pyrazolines have various activities, one of which was anticancer activity. This study aims to synthesized the pyrazoline was -3-(naphthalene-2-yl)-5-(3-nitrophenyl)-1-phenyl-4,5-di…
Oil palm empty fruit bunch charcoal (Elaeis guineensis Jacq.) is a potential raw material that can be utilized as an adsorbent for Escherichia coli (E. coli). The cellulose content in the empty fruit bunch charcoal acts as a carbon source in the E. coli adsorption process, whose efficiency can be enhanced through an activation process using ZnCl₂ as an activating agent. The addition of ZnCl2…
ABSTRACT Terephthalic acid is used as the main raw material for making polyester yarn fiber for the textile industry, as the main raw material for making "polyester chips" as a raw material for making polyester fiber which is useful for textile raw materials, tires, seatbelts, reinforcement and heat-resistant jackets, as polyester filament for polyester yarn raw materials, can be used as a…
White jabon fruit (Anthocephalus cadamba Miq.) has the potential to be used as a biosorbent because it contains cellulose, whose adsorption capacity can be enhanced through activation. Activation in this study used NaOH and was combined with humic compounds from peat water, such as humic acid, which is expected to increase the surface area and multiply the active sites on the biosorbent. This s…
The white jabon fruit (Anthocephalus cadamba Miq.) combined with humic acid extracted from peat water, is believed to hold potential as a biosorbent capable of removing various dyes, including Safranin O. This fruit was selected due to its relatively high cellulose content, making it suitable for biosorption applications. The aim of this study is to determine the adsorption capacity and efficie…
White jabon fruit powder (Anthochepalus cadamba Miq.) combined with humic acid from peat water has the potential to be used as a biosorbent in absorbing Crystal Violet dye. Jabon puith fruit is used as a biosorbent because of the cellulose content contained in the jabon fruit itself. The combination with humic acid aims to increase the active sites of the biosorbent in absorbing Crystal Violet …
White jabon fruit (Anthocephalus cadamba Miq.) is one of the biosorbents that has the potential to adsorb methylene blue dye because it has high cellulose content. The ability of white jabaon fruit powder can be improved through activation. Activation using NaOH is expected to increase the surface area and multiply the active sites on the white jabon fruit biosorbent. This study aims to determi…
Acacia bark powder (Acacia crassicarpa) can be used as an adsorbent because it contains cellulose, hemicellulose and lignin which play an active role in the adsorption process. This study aims to determine the contact time, stirring speed and optimum temperature of Rhodamine B dye adsorption by acacia bark powder (Acacia crassicarpa). The method used was adsorption method using batch system. Ad…
Hydrazone compounds belonged to the azomethine group, characterized by a distinctive chain (-NHN=CH-). As analogs of Schiff bases, hydrazones exhibited promising pharmacological properties, including potential anticancer activity. This study aimed to synthesize the hydrazone compound, (E)-2-((E)-1-(naphthalen-2- yl)-3-(4-nitrophenyl)allylidene)hydrazine-1-carboxamide and to evaluate its antican…
Acacia bark powder (Acacia crassicarpa) is a biomass that contains cellulose, lignin and hemicellulose as active sites of adsorbent. The purpose of this study was to determine the adsorbent dose, pH and optimum adsorbate concentration as well as the adsorption isotherm model of Rhodamine B by acacia bark powder (Acacia crassicarpa). The method used in this research is batch system adsorption.…
Abundant durian peel waste can cause problems in the environment. Durian peel contains chemical compounds in the form of cellulose, lignin and starch so that it can be used as raw material in the manufacture of activated carbon. In this study, chemical activation using with KOH was carried out followed by physical activation using a furnace with a comparison between the use of air (atmosphere) …
Durian peel waste can be utilized as a source of activated carbon because it has a high cellulose content of 50-60%. This utilization can reduce the amount of durian peel waste and the negative impact on the environment. In this research, a comparative study of physical activation using a furnace with air and a furnace supplied with N2 gas was conducted. The synthesis of activated carbon began …
Vinyl chloride is an important monomer in the polyvinyl chloride (PVC) industry, with domestic demand projected to reach 179,440 tons by 2025. This study proposes a preliminary design for a vinyl chloride monomer (VCM) plant with a capacity of 89,700 tons per year at the Balaraja Industrial Estate, Banten, using acetylene and chlorine as the primary feedstocks. The process is organized into…
ABSTRACT Vinyl chloride is generally produced as a material for making polymers, especially polyvinyl chloride (PVC). The aim of establishing a vinyl chloride factory is to increase domestic production capacity and build Indonesia's ability to become an exporter. Vinyl chloride is produced through a direct chlorination process with the main raw materials being ethylene and chlorine. This proce…