ABSTRACT The growth of the population leads to an increase in population mobility and the number of vehicles. The rise in motorized transportation results in an increasing demand for motor vehicle lubricating oil. The increased need for oil is directly proportional to the waste produced, namely used oil. One of the technologies that can be utilized in processing used oil is purification, as it…
ABSTRACT Microplastics are generally defined as synthetic polymers that are under 5 mm in size. Microplastics that accumulate in water will have a negative impact on aquatic ecosystems. This study aims to analyze the abundance and types of microplastics in water and digestive organs in the Sail River, Pekanbaru. The Sail River is a tributary that will empty into the Siak River. High activity a…
ABSTRACT The growth of the population in Pekanbaru city each year has led to an increase in the number of motor vehicles, resulting in a rise in noise intensity. The aim of this research is to measure and map the noise level during peak hours at the intersection of Kaharuddin Nasution Street and Soekarno Hatta Street in Pekanbaru city, analyze the relationship between the number of vehicles an…
NUR AFNI ALVIONITA 1903155213
SUMMARY Depression is a psychological illness that can occur in humans regardless of gender, age, and background. Areca nut (Areca catechu L.) has been studied for its potential as an in vivo antidepressant drug using the FST (Forced Swim Test) method or forced swimming test in single animal trials. The purpose of this study was to determine the antidepressant activity of young areca seed meth…
SUMMARY Durian seeds (Durio zibethinus) have an active component in the form of protein and starch which can act as coagulant agent. This study aims to prepare, characterize and determine the best method for preparing durian seed biocoagulant using dry mil (DM) and wet mill (WM) method in removing color, odor, turbidity, TSS and TDS of peat water. Characterization of biocoagulant included…
SUMMARY Endophytes are microorganisms that live within plant tissue without causing damage to the host. Endophytic microorganism promotes plant growth and is well-known as a source of novel bioactive secondary metabolites which potential as a candidate of antimicrobial, antiinsects, anticancer and other properties. Botryosphaeria rhodina is an endophytic fungus isolated from the roots of mangr…
SUMMARY Depression is a mental disorder caused by an imbalance of neurotransmitters which can be treated with antidepressants. The method commonly used for antidepressant screening which is validated by animal behavior is the Forced Swim Test (FST). It has not been clarified the antidepressant activity of n-hexane extract young areca nut (Areca catechu L.) through FST using a single test a…
SUMMARY Endophytic fungi are microorganisms that reside in plant tissues, have no negative effects on their hosts, and can produce large quantities of secondary metabolites identical to those of their hosts. The endophytic fungus B. rhodina is a member of the genus Botryosphaeria, which can grow in a variety of climates worldwide. Multiple species of this genus have been reported to possess an…
ABSTRACT Peat water has a brownish red color because it contains high organic matter. Adsorption using zeolite as an adsorbent is one of the peat water treatment methods. POBA (Palm Oil Bottom Ash) is a solid waste from the disposal of oil palm boilers. POBA has a high silica content which can be used as a base for zeolite manufacture. The use of POBA as a low-cost adsorbent is one of the solu…
ABSTRACT Domestic wastewater has become an important issue that arises in line with the increasing human population. Domestic wastewater contains high organic matter, so it can reduce water quality if it is directly discharged into water bodies. According to the Indonesian Ministry of Environment in 2014 around 60-70% of rivers in Indonesia have been polluted by domestic wastewater. For this r…
ABSTRACT Dimethyl carbonate (DMC) is a compound that exhibits versatile reactivity and is widely used in chemical transformation reactions such as methylation, carbonylation, and methoxycarbonylation. Dimethyl carbonate (DMC) is also considered one of the alternative additive substances capable of replacing conventional additives due to its environmentally friendly nature compared to other add…
ABSTRACT Trisodium phospate is a product needed in the industrial, medical, and household world. Trisodium phospate is the most complex compound and commercial products generally vary in composition and often contain excess sodium hydroxide. Trisodium phospate is a strong base, most uses of trisodium phospate depend on its own characteristics. For example, many heavy cleaners contain trisodium…
ABSTRACT The polymer industry produces various types of plastic products, synthetic rubber, synthetic fibers and so on. In the process of making polymers, besides requiring resin as the main raw material, it also requires plasticizers as additional materials. Plasticizers are materials added to resin to make it soft and easy to shape. Dimethyl phthalate is one type of plasticizer used. Dimethy…
ABSTRACT Styrene (C6H5CH=CH2) is the simplest aromatic monomer and is a petrochemical product that is widely used to make synthetic rubber and plastics. Styrene is known commercially as styrene monomer (SM), styrene is produced in large quantities for polymerization. In this design, a styrene plant will be built with a capacity of 50,000 tons/year in the industrial area of Dumai City, Riau. S…
ABSTRACT Carbon in peat soil persists in the form of organic matter, which, when peat forests are cleared, can easily decompose and emit CO2 as a result of soil respiration. Carbon sequestration is an effort to store carbon in the soil using organic solids such as biochar. One biomass that can be utilized to produce biochar is sugarcane bagasse. Sugarcane bagasse contains lignocellulosic conte…
ABSTRACT Peat water in Riau Province has the potential to meet the water demand in the region in terms of quantity. However, in terms of quality, it does not meet the criteria for clean water and requires treatment. The aim of this research is to analyze the characteristics, adsorption efficiency of organic matter and color in peat water, and calculate the adsorption capacity and equilibrium m…
ABSTRACT High density polyethylene (HDPE) is a chemical compound with the molecular formula (-CH2- CH2-)n. HDPE has slightly hazy and transparent characteristics, as well as being elastic. This chemical has a melting point above 127°C at a pressure of 1 atm. Process of HDPE production is the CX-Mitsui process with Ziegler-Natta catalyst, which operates at 0.2-0.7 MPa and temperature at range …
SUMMARY Pyrrosia longifolia is an epiphytic plant that belongs to the family Polypodiaceae. Other species, such as P. petiolosa and P. lancelota have been reported as sources of antioxidants and anti-inflammatory agents, however this species has not received as much attention as it acknowledges. The purpose of this research was to isolate secondary metabolites having antioxidant activity from …
SUMMARY Palm shell fly ash is a waste generated from the processing of palm oil industry, however, its utilization has not been widely studied. This study aims to utilize fly ash as a substitute for sand in the manufacture of lightweight bricks using the mixing method. This research was conducted with the % weight ratio of cement: foaming agent: sand: the fly ash of 0%, 5%, 10% and 15%. Both th…