Kampar Kiri Hilir sub-district is one of the sub-districts in Kampar Regency which has the potential of the freshwater fisheries sub-sector businnes because it is supported by natural resources in the form of the Kampar Kiri River. This study aims to : (1) to calculate the economic value of capture fisheries resources in the Kampar River, Mentulik Village, Kampar Kiri Hilir sub-district, (2) to…
ABSTRACT Empty Palm Fruit Bunch (EFB) is a by-product of the palm oil industry that is abundant in Riau Province. The high cellulose content in EFB has the potential to be developed as a basic material for making activated carbon, which is the type of adsorbent most widely developed for heavy metal adsorption. This study aims to analyze the best carbonization temperature and time on the qu…
ABSTRACT Printing wastewater contains heavy metals such as lead (Pb) and copper (Cu), which are toxic. This study aimed to evaluate the effect of pH and stirring speed on the adsorption efficiency and capacity of Pb and Cu using a composite adsorbent of Spent Bleaching Earth (SBE) and Spent Mushroom Substrate (SMS) with a composition ratio of 25% SBE and 75% SMS. Characterization was conducted…
ABSTRACT Industrial printing wastewater contains heavy metals such as lead (Pb) and copper (Cu), which are toxic and difficult to degrade, thus requiring an effective treatment method. One alternative to reduce heavy metals is the adsorption method using a composite adsorbent made from Spent Mushroom Substrate (SMS) and Spent Bleaching Earth (SBE). This study aims to determine the removal …
ABSTRACT The problem of leaf litter and ketapang twig accumulation at the Faculty of Engineering, University of Riau, has prompted innovative efforts in its management. One approach that can be taken is to apply TOSS (Waste Management Technology at the Source) in managing this waste. This study aims to analyze the physical characteristics of biopellets produced from the TOSS biodrying pro…
ABSTRACT The increase in palm oil production in Indonesia produces abundant solid waste, one of which is empty oil palm bunches (EFB) which has the potential to be used as raw material for activated carbon. This study aims to analyze the best concentration and activation time on the quality of EFB activated carbon, the ability of EFB activated carbon to adsorb Cu²⁺ metal ions, and to an…
ABSTRACT Heavy metals such as Cu and Pb are hazardous pollutants that are toxic, persistent, and capable of accumulating in living organisms. The concentration of heavy metals exceeding the quality standards in wastewater requires further treatment before being discharged into the environment. Adsorption is an effective and economical method for reducing heavy metal content. This study aim…
ABSTRACT Power quality disturbances in the Distribution Network cause losses both from the generation side and from the load side, therefore a mechanism is needed that can anticipate these problems. This research offers a method that is able to overcome these problems. Especially related to disturbances caused by Voltage sag, Voltage swell due to changes in load characteristics in the repeater…
ABSTRACT Modern music has become an essential part of human life as time progresses, serving as entertainment, self-expression, and a tool for learning. The interest in modern music has grown, especially among the younger generation. This can be seen in the numerous concerts held by famous artists in Pekanbaru, as well as the many music-related facilities available. However, facilities to supp…
ABSTRACT Pekanbaru City, the capital of Riau Province, has various major events or events every year, even every few months. This is because Pekanbaru City is experiencing development and growth in the economic, business, and tourism sectors, where demand is increasing for venues for events, businesses, and exhibitions that can accommodate various types of sectors. These events or events are P…
ABSTRACT Silica gel is one of the silica-based materials that has quite extensive uses such as in the pharmaceutical industry, ceramics, paints and special applications in the chemical field. This study aims to synthesize silica gel from Bengkalis Beach sand by varying the concentration of HCl during gel formation. Silica gel is synthesized through several stages starting with the leaching pro…
ABSTRACT Silica gel is one of the silica-based materials that has quite extensive uses such as in the pharmaceutical industry, ceramics, paints and special applications in the chemical field. This study aims to synthesize silica gel from Bengkalis Beach sand by varying the concentration of HCl during gel formation. Silica gel is synthesized through several stages starting with the leaching pro…
ABSTRACT The increase in the number of laundry services will be directly proportional to the amount of liquid waste generated at the end of the activity. Therefore, it is necessary to develop effective and environmentally friendly waste treatment methods. The adsorption process is still the best choice for liquid waste treatment, especially if it uses environmentally friendly adsorbents, for e…
ABSTRACT Instant yeast is a leavening agent in making bread containing microorganisms of the Saccharomyces cerevisiae type. However, sourdough is now starting to be considered as an alternative because it has several advantages, including being able to enrich the taste, extend the shelf life of the product, and being easier to digest. This study aims to produce natural yeast through fermentati…
The aim of this research was to gain insights into the productivity nurses at Sansani Hospital Pekanbaru in relation to occupational safety and health (K3) as well as work discipline. In this context, occuptanional safet and health (K3) and work discipline serve as indenpendet variables, while nurses’ woek productivity is the dependent variable. The issue at hand is a decrease in the producti…
The purpose of this study is to find out more about how incentives and organizational climate affect employee productivity at Winstar Hotel Pekanbaru. Employee productivity as the dependent variable, incentives and organizational climate as independent variables. The problem is that there has been sales instability in the last five years and also criticism from customers about hotel services an…
The purpose of this study was to find out more about how occupational safety and health (OHS) and work incentives affect the productivity of production employees at PT. Panca Eka Bina Plywood Industry. Employee productivity as the dependent variable, occupational safety and health (OHS) and work incentives as independent variables. The problem is that there has been a decline in productivity as…
Profitability shows how efficiently a company manages its revenues and costs to generate profits. One of the non-oil and gas industry sectors that is the fourth largest contributor to Indonesia and is included in the priorities in the 2015-2035 National Industrial Development Master Plan (RIPIN) for the Indonesian economy is the Chemical, Pharmaceutical and Traditional Medicine Industry. Fluctu…
This study aims to assess the service quality provided by CV. Bilava Tour to its guests and the impact of slow responses on service quality. The research method used is descriptive qualitative research with techniques for data collection, data reduction, data presentation, and conclusion drawing. The findings of this study indicate that: first, the service quality of CV. Bilava Tour has not bee…
The community actively participates and involves themselves both directly and indirectly to help maintain and preserve the natural and cultural wealth they have. This study aims to determine the form of participation and to determine the factors that influence community participation in developing bono tourism objects. This study uses a quantitative research method. This study uses a population…