Oily sand and water contaminated with oil is part of the results of exploration and exploitation of petroleum categorized as hazardous and toxic waste (B3), it is necessary to carry out special processing into slurry fluid and injection into disposal wells. The main problem in the injection process is the increase in bottom hole pressure during the injection process which causes well plugging p…
ABSTRACT Energy auditing is one of the steps made in an effort to realize energy saving programs. The energy widely used in the pulp and paper industries is thermal energy (steam) and electrical energy. Pulp drying is one of the processes that many use such energy. The thermal energy used was of low to medium pressurized steam, which used to increase air temperature to dry pulp sheet. Res…
ABSTRACT The increasing demand of pulp in the world requires sufficient availability of raw materials. To fulfill the raw material supply, it can be established through development of industrial plantations [HTI]. Acacia sp and eucalyptus sp are the types of wood that are prioritized for development in industrial plantations because these species are fast growing species, high timber produ…
ABSTRACT Pulp washing is done to separate the pulp with impurities, soda carry over is the amount of sodium pulp carried in the pulp and then out of the rest of the washing process. The amount of sodium that is still contained in the pulp needs to be known because this sodium will affect the amount of bleach used in the bleaching stage. This research was conducted based on the washing fibe…
ABSTRACT Soil respiration is one of the contributors to carbon dioxide (CO2) emissions from the agricultural sector. But the agricultural sector can also reduce the CO2 emissions it produces, one of which is by making biochar from agricultural waste. The addition of biochar to the soil can have a positive impact on the physical, chemical, and biological properties of the soil so as to lowe…
ABSTRACT Used oil is a potential alternative fuel and can reduce the waste of used oil. Used oil utilization has been carried out at The Production Technology Laboratory, Department of Mechanical Engineering, Riau University on modified diesel engines. The problem is that the resulting emissions still exceed the quality standard at a power load of 2.000 W. In the present work, gas emission…
Abstract: PT. Z is the palm oil processing mill in Pelalawan Regency that utilizes solid waste of palm shells and fiber as boiler fuel. This process will produce particulate emissions, one of which is dustfall which contains Silica (Si) because more than 50% of the constituent elements of boiler are Silica. The purpose of this research is to determine dustfall concentration and the silica c…
ABSTRACT Emulsifier is an oleochemical product that are needed as an emulsion stabilizer in the food industry. The emulsifier most widely used is MDG (Mono-Diglyceride) because it is GRAS (Generally Recognize As Safe). The process of making MDG generally consist of three ways which is esterification of fatty acid with glycerol. Therefore, in this study MDG was synthesized by esterification…
ABSTRACT Sago waste is a lignocellulosic material that can be used as a raw material for making bioethanol. The lignin content in lignocellulose can inhibit the rate of saccharification by blocking access to cellulase enzymes in cellulose. The pretreatment stage is the initial stage of the conversion process of lignocellulose to bioethanol with the aim of reducing lignin levels in lignocel…
This development research aims to develop LKPD based on Introduction, Connection, Application, Reflection, Extencion (ICARE) on the subject of ion equilibrium and pH of a valid saline solution. This research is a development research (R&D) that uses the ADDIE model (Analysis, Design, Development, Implementation, Evaluation) but this research only reaches the Development stage. The research…
The development of a chemistry e-module based on phenomenon-based learning in thermochemistry material is required due to problems observed in multiple schools, including SMAN 2 Tapung Hulu, SMAN 3 Tapung, and SMAN 5 Tapung in Kampar Regency. The problems discovered are students' low critical thinking skills, particularly on thermochemistry material; the availability of innovative, interes…
The development of interactive multimedia by articulate storyline application aims to develop an innovative and independent learning media for 11th grade students at Senior High School (SMA) on Thermochemistry subject matter. This research was designed using Research & Development (R&D) design with Plomp development model. Expert assessments (validation sheets) and user (teachers and students) …
ABSTRACT Greywater is a waste from kitchen, bathroom, and laundry activities that contains high organic matter. The organic matter contained in the wastewater is utilized by the microalgae Chlorella sp. as a source of nutrient and its reduce the pollutant in wastewater. This study aims to count the number cells of Chlorella sp. which grew in suspension and attached to the Kaldness 1 (K1) b…
ABSTRACT Domestic wastewater based on its characteristics is divided into two type which is black water and grey water. Grey water that directly flowed into the environment is one of the main causes of water pollution. The high content of organic matter causes grey water must be treated. Microorganisms can be use to treat this grey water one of them is microalgae Chlorella sp which consume…
ABSTRACT Drinking water needs in Bangkinang Subdistrict, Kampar Regency comes from wells, river water and tap water where the quality and quantity have not been guaranteed. Community water needs reach 191,61 L/sec in 2039, so it is necessary to plan a drinking water supply system with raw water sources originating from the Kampar River. Based on mass balance analysis, there are units that …
ABSTRACT Microplastics are one of the major threats to ecosystems in rivers. Microplastic is the smallest part of plastic measuring
ABSTRACT Empty palm bunches as solid waste from the processing of fresh fruit bunches have the potential to be used as renewable energy source in the form of biomass briquettes. This can be seen form the thermal energy of empty palm bunche is 20.093 kJ/kg (Mardiansyah, 2015). However, the burning of empty palm bunches briquettes can effect indoor air quality, so need to do study test pollu…
ABSTRACT Fatty Alcohol (fat alcohol) is a product of CPO processing. Fatty Alcohol is a derivative of vegetable fats and animal oils and is a non-oil and gas export commodity that is needed in various industries such as the perfume, cosmetics, pharmaceutical, food and beverage industries. The need for fatty alcohol continues to increase every year. The import of fatty alcohol has been carr…
Water pollutions due to dye effluents have been considered as a major environmental issues. Dyes usually have very complex structures, which are difficult to degrade by biological processes. Photocatatalytic method has been regarded as an effectively method for the degradation of dyes from aqueous solution. In this study, the composite MnO/fly was prepared and studied as well as proved as …
Hydrazone is a versatile compound in drug design for the synthesis of heterocyclic compounds with different biological activities because it has two active centers, namely two nitrogen atoms and two carbon atoms. Hydrazones play an important role in heterocyclic structures where hydrazones can be used as intermediates to synthesize heterocyclic compounds. The combination of hydrazones with…