ORCID Profile
0000-0002-6829-1321
Current Organisation
Universitas Riau
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Publisher: IOP Publishing
Date: 05-2020
DOI: 10.1088/1757-899X/845/1/012008
Abstract: Geopolymers have zeolite-like chemical compositions, which has some characteristics such as wide surface area and excellent stability so that it can be used for adsorbents for peat water treatment. In this research, the kaolin based geopolymers were applied as an adsorbent for processing the peat water into clean water. The variable used in this research were adsorbent mass (1 1.5 2 and 2.5 g), and time (30 60 and 90 minutes). The results indicated that the kaolin-based geopolymers were very efficient in removing color and organic content. The optimum condition was mass adsorbent of 1 g and time of 30 min, and the result was 100% for removing color and 98.77% for removing organic content.
Publisher: Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau
Date: 19-11-2020
DOI: 10.31258/UNRICSCE.2.72-76
Abstract: Various types of waste are found in TPA Muara Fajar Timur, Rumbai District, Pekanbaru. One of the waste that does not decompose is styrofoam. If styrofoam is not handled seriously, it will have an impact on the environment and endanger the surrounding community. Styrofoam waste contains polystyrene foam which contains hazardous materials for health and the environment. For this reason, efforts should be made to handle the styrofoam waste, namely by recycling styrofoam into useful and economical products. One of the uses of Styrofoam waste is making latex glue. Latex glue is a product that is widely used by the community so that if it is produced it will be able to meet the needs both for themselves and for the needs of the community. Latex glue is made from styrofoam by adding toluene and surfactants (sodium lauryl sulfate / SLS) or by adding gasoline to Styrofoam.The results obtained were that the community could understand and be able to make latex glue. The results of the success questionnaire show the high interest and benefits of this activity. This shows that this activity has been successfully implemented in Muara Fajar Timur Village, Rumbai District, Pekanbaru.
Publisher: Springer Science and Business Media LLC
Date: 05-01-2023
Publisher: Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau
Date: 12-11-2020
Abstract: The LaMnO3 perovskite catalyst was successfully synthesized using a simple solid-state reaction method. This catalyst is used to activate PMS in the organic content's degradation process in the secondary effluent palm oil mill (POMSE). The organic content in POMSE is equivalent to the COD value thus the COD value is used as a parameter for the process's success. The catalyst performance test shows that the catalyst effectively reduces COD, and the waste meets the maximum threshold allowed by government regulations. The variables that affect the catalyst's effectiveness were the calcination temperature of the catalyst, catalyst loading, PMS concentration, and temperature. The temperature of calcination affects the perovskite crystal formation the higher the temperature, the more active catalyst obtained. The catalyst loading and PMS concentration variables affect the degradation process of organic levels in POMSE at low levels, the higher the catalyst loading and PMS concentrations will increase the effectiveness of the degradation process, but at certain levels, the addition of catalysts and PMS reduces the effectiveness of the process. LaMnO3-800oC catalyst presents the highest activity of 92.7% and met the allowable threshold of COD 300 mg/L. The sequence for removal of COD among the three catalysts with an order of LaMnO3-800oC LaMnO3-700oC LaMnO3-600 oC. The pseudo-second-order kinetics equation fits the experimental data. The effect of temperature on the kinetics constant follows the Arrhenius equation. Furthermore, the catalyst obtained was stable, with no significant decrease in catalysts activity up to three runs.
Publisher: Elsevier BV
Date: 05-2023
Publisher: Universitas Padjadjaran
Date: 15-04-2020
Publisher: Universitas Muhammadiyah Palangkaraya
Date: 28-11-2022
DOI: 10.33084/PENGABDIANMU.V7I6.3991
Abstract: Mutiara Ayu is a Micro, Small, and Medium Enterprise (MSME) which was founded by a group of housewives in Mutiara Kualu 8 Housing, Kualu Village, Tambang District, K ar Regency, which produces Healthy Soybean Extract. Since its establishment in November 2020, MSME Mutiara Ayu has been experiencing various problems in running its business. The University of Riau Abdimas team, in partnership with MSME Mutiara Ayu, provided assistance to solve the problems being faced in the form of increasing knowledge and skills to improve product quality and quantity. The community partnership scheme service program was carried out for two months, namely July – August 2022, involving Real Work Lecture (Kukerta) students. This program was carried out in several stages of implementation, namely: (1) The preparation stage includes coordination with partner MSMEs, analysis of business conditions, recruitment, briefing with the community service team and students, coordination with various related parties, identification of needs, and analysis of instruments, (2) The implementation phase includes the provision of instruments and training, technical guidance, and assistance. (3) The monitoring and evaluation phase includes coordination with partner MSMEs, village parties, and Kukerta students. The results achieved in the Kukerta-integrated Abdimas program are an increase in product quality and quantity as well as an increase in the knowledge and skills of MSME Partners related to production and business management, which is expected to increase Mutiara Ayu's MSME income in the future.
Publisher: Elsevier BV
Date: 10-2023
Publisher: IOP Publishing
Date: 11-2019
DOI: 10.1088/1742-6596/1351/1/012030
Abstract: Laccase is an important industrial enzyme used in the paper, food and textile industry. It is produced by many different organisms, including filamentous fungi. Trichoderma asperellum LBKURCC1 is a strain isolated from Riau soil, which can produce laccase by solid state fermentation (SSF) of rice husk and rice straw. The aim of this work was to optimize SSF production of laccase from rice straw, through optimizing Nitrogen, Carbon and surfactant supplements to the fermentation media. Effect of surfactant, nitrogen supplement, and carbon supplement were evaluated by using a Central Composite Design (CCD) and surface response analysis. The concentration of the surfactant, Tween-20, at all concentration levels tested had no significant effect to the model. In contrast, the nitrogen and carbon supplement concentrations were significant factors (P-Value .05) enhancing laccase production. Optimum conditions for laccase production were 23 g/L nitrogen and 1% carbon supplement, giving a maximum laccase activity of 56.8 U/L enzyme extracted, equivalent to 0.7 U per g rice straw fermented. Optimizing the nitrogen and carbon supplement increased yields up to 3 times the level obtained in a non-optimized media.
Publisher: Springer Science and Business Media LLC
Date: 03-02-2022
Publisher: Elsevier BV
Date: 06-2020
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