Pendidikan terus mengalami perkembangan dan sangat penting bagi kehidupan karena mampu menciptakan kualitas sumber daya manusia (SDM) yang mumpuni. Penelitian ini dilatarbelakangi oleh efikasi diri dan kemandirian belajar peserta didik dalam pembelajaran kimia di SMAN 15 Pekanbaru. Tingkatan efikasi diri dan kemandiran belajar peserta didik tidak terlihat dengan jelas selama proses pembelajaran…
Teknologi informasi dan komunikasi merupakan salah satu faktor pendukung yang tidak bisa dilepaskan dalam dunia pendidikan. Bahkan mutu pendidikan diukur melalui penyesuaian perkembangan teknologi informasi dan komunikasi di dalam segala proses yang ada salah satunya pada proses belajar mengajar. Keberhasilan suatu proses belajar mengajar pada hakikatnya terletak pada efisiensi peran seorang gu…
Kurikulum merdeka belajar adalah kurikulum yang menuntut peserta didik untuk memiliki kemandirian, yaitu tiap – tiap peserta didik diberikan kebebasan guna mengakses ilmu yang diperoleh dari pendidikan formal maupun non formal dalam mengembangkan potensi yang ada pada dirinya. Pada kurikulum merdeka, lebih menekankan pada pembentukan karakter peserta didik yang sesuai dengan profil pelajar Pa…
This research aims to determine the validity and user response to the development of an interactive e-module using Flip PDF Professional on chemical bond material for class X SMA/MA equivalent. The type of research used is Research and Development (R&D) with a modified ADDIE development model. The test subjects in this research were three chemistry teachers and twenty students who had studied c…
Benzotrichloride was a derivative of toluene. Benzotrichloride was widely used in the synthetic dye industry, organic synthesis, as an intermediate in the chemical industry, in the production of benzoyl chloride, chlorinated toluenes, benzotrifluoride, benzoic acid, and as an intermediate for dyes. The demand for benzotrichloride in Indonesia and globally continued to increase, giving the benzo…
This report presents an analysis of carbonate residuals in limestone used by PT Riau Andalan Pulp and Paper in the pulp and paper production process, using two test methods: Ahlstrom and Econotech. The background to this research is based on the importance of limestone quality as the main raw material in production as well as the company's need to ensure efficiency and quality of production res…
Maredan clay located in the western part of Maredan Village, Siak Regency, Riau Province has potential as a raw material for zeolite synthesis. This study aims to determine the characteristics of the synthesized zeolite and determine the optimum contact time of zeolite in adsorbing lead (II) ions. Zeolite synthesis was carried out using hydrothermal alkali fusion method with time variation of 5…
White jabon fruit powder (Anthocephalus cadamba Miq.) can be used as a biosorbent because it contains cellulose. The white jabon fruit powder was activated with NaOH and combined using peat water to increase the surface area and multiply the active sites on the biosorbent. This study aims to determine the biosorbent dose, pH, pHpzc and optimum contact time of the combination of white jabon frui…
Durian peel contains high levels of cellulose, namely around 50-60%. This shows that durian peel is not just a waste, but it can produce activated carbon. This research aims to identify the effect of activators on the characteristics of durian peel carbon and determine the optimum pH for the adsorption activated carbon from durian peel on chromium (III) metal. Durian peel was converted into car…
Durian peel (Durio zibethinus Murr.) has the potential to be used as a biosorbent in the form of activated charcoal because it contains 50-60% cellulose and its adsorption capacity can be increased by activation. The activation carried out in this study used NaOH with varying activator concentrations (0.1; 0.2; 0.3 and 0.4 M) so that it is hoped that the optimum activator concentration can expa…
The development of telecommunication antenna technology is getting more challenge with the need for high and practical antenna performance. The antenna technology can be realized using the Split Ring Resonator (SRR) metamaterial structure. SRR metamaterials are periodic materials that have minimal manufacturing dimensions and are capable of working at high frequencies. The ability of the metama…
Activated charcoal of palm shell that activated with NaOH can be used as an adsorbent of heavy metal ions with quite high adsorption efficiency. In this research, i want to know the value of adsorption to a mixture of Zn2+ metal ions and Cr3+ metal ions. Activation using NaOH in this study aims to remove lignin levels from palm shells, also to expand porosity and increase active sites on palm s…
Palm kernel shell charcoal (Elaeis guineensis Jacq.) has potential as a heavy metal adsorbent, but its adsorption efficiency is relatively low. To increase the adsorption capacity of palm kernel shell charcoal on an adsorbate such as metal ions, activation of palm kernel shell charcoal with NaOH is one of the efforts. Adsorption competition between Pb (II) and Cu (II) metal ion in the mixture i…
Palm kernel shells (Elaeis Guineensis Jacq.) are one of the palm oil wastes that have benefits, such as activated carbon for the adsorption of heavy metals. The cellulose contained in palm kernel shells plays an important role in carbon source the adsorption of heavy metals, the effectiveness of which can be increased through the activation process. Activation in this research using a base acti…
The leban plant (Vitex pubescens Vahl) is a medicinal plant from the Vitex genus and the Lamiaceae family, a plant from the Vitex genus with the widest distribution in Indonesia. Leban contains several groups of bioactive compounds such as flavonoids, saponins, alkaloids and tannins, making Leban plants have potential as a source of antibacterial compounds. Endophytic fungi are mitosporic and m…
White jabon fruit powder (Anthocephalus cadamba Miq.) activated with NaOH and combined with humic acid from peat water has been investigated for its ability to be used as a biosorbent due to the large surface area and many functional groups contained in humic acid and jabon fruit which is used as a solid supporting humic acid. The purpose of this study was to determine the optimum biosorbent do…
Crude Palm Oil (CPO) as a raw material for the synthesis of biodiesel has a high content of free fatty acid, when reacted with the catalyst CaO of the clam shell that is a strong base will form an emulsion and CaO also has a small surface area that requires modification. Therefore, added porous silica material from the coconut fiber can improve the acidity and surface area of the catalyst. The …
Davallia denticulata, a member of the Davalliaceae genus, is an epiphytic plant that flourishes on host plants. Several species in this genus have been documented to contain antioxidant, antibacterial, and anticancer characteristic. The objective of this study was to isolate secondary metabolites from the chloroform extract of D. denticulata and evaluate the antifungal properties of the extract…