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All Journal Dialectical Literature and Education Journal Journal of Tourism and Economic International Journal of Research in Vocational Studies (IJRVOCAS) Legitima : Jurnal Hukum Keluarga Islam
Marhadi
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Decreasing pH, COD and TSS of Domestic Liquid Waste Using Photocatalysis TiO2 (Titanium Dioxide) Marhadi; Adriansyah, Endi; Herawati, Peppy; Suzana, Asih; Pratama, Aulia Intan
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 2 (2023): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i2.201

Abstract

Domestic waste comes from households that must be treated. Based on the Minister of Environment and Forestry Regulation Number P.68/Minister Environment and Forestry-Secretary General/2016 concerning Domestic Wastewater Quality Standards, the government has set a maximum limit for waste water that can be disposed of to the environment or receiving water bodies. includes pH, TSS and COD parameters. This is useful for overcoming the problem of environmental pollution caused by wastewater. Waste water that is not managed properly will have an impact on human health. environmental pollution is harmful to humans. Domestic sewage treatment using a titanium dioxide photocatalyst shows the results of testing the pH value on domestic waste as shown below, showing that overall the concentration of parameters has increased the pH value decrease 90% from acidic to normal with the best pH value with a value of 6.57 at a contact time of 210 minutes of mass catalyst 2.5 grams. Parameter concentration decreased TSS value from initial value of 157 mg/L to normal with the best TSS value of 94 mg/L at contact time of 210 minutes with catalyst mass of 2.5 grams. COD value at contact time of 210 minutes with a mass of 2.5 grams of catalyst with a value of 2861 mg/L. COD value affects the time and mass of the catalyst (1). a decrease of 40.1% where the TSS value meets the quality standard, and the COD value has decreased by 31%. Addition of further processing to get a better COD.
Tofu Wastewater Treatment Using Biocoagulant Moringa Seed Powder (Moringa Oleifera L) Nora, Fitrisia; Marhadi; Adriansyah, Endi; Suzana, Asih; Pramono, M. Sidik; Sufra, Rifqi; Syaiful, M.
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 3 (2023): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i3.211

Abstract

Indonesia has various types of vegetation which are used as natural coagulants or biocoagulants. Coagulants can be divided into chemical coagulants and natural coagulants (biocoagulants). Biocoagulants are more environmentally friendly and can be obtained from natural ingredients, both animals and plants, one of which is Moringa seeds. Moringa seeds or with the Latin name Moringa oleifera are a type of plant from the Moringaceae family. From several previous studies, Moringa seeds were used as a more economical and environmentally friendly wastewater treatment method. Moringa seed biocoagulant in powder form is made from ripe and old moringa seeds and contains less than 10% water. Moringa seed biocoagulant contains 4αL-rhamnosyloxy-benzylisothiocyanate and is a determinant of coagulation effectiveness. This active substance is able to absorb pollutants in waste water. This research aims to treat tofu waste with moringa seed biocoagulant in reducing pollutant parameters, namely TSS (Total Suspended Solid) and COD (Chemical Oxygen Demand). Results of the removal of pollutants from moringa seed powder biocoagulant in tofu waste water the efficiency value obtained for each TSS parameter, and the COD for the TSS parameter is 54.4%. and for the COD parameter of 14.6%, it can be concluded that the efficiency value for each parameter still does not meet the effectiveness value.
THE INFLUENCE OF VIDEO LEARNING ON UNDERSTANDING ENGLISH LEARNING DURING PANDEMIC Marhadi; Chairunnisa
Dialectical Literature and Educational Journal Vol. 8 No. 1 (2023): Dialectical Literature and Educational Journal
Publisher : Department of English Education, Universitas Panca Sakti Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51714/dlejpancasakti.v8i1.62.pp.40-44

Abstract

The first aim of this research is to explore the influence of video learning on understanding English learning during the pandemic at Mentari Ilmu Islamic Junior High School Karawang. Second, it aims to explore the effectiveness of video learning. Third, it aims to explore the supporting and inhibiting factors of video learning. This research was descriptive analysis research. The data collection techniques of this research used triangulation consisting of observation, interviews, and documentation. The participants consisted of three English teachers and sixty-one students in three classes. The data were analyzed using data reduction, display, and verification. The first finding is the influence of video learning on the understanding of 7th-grade English learning during a pandemic, there were 75,4% of students agreed that using video learning media in the online learning process during the pandemic had a good influence on their understanding. The second finding is the effectiveness of video learning on the understanding of 7th-grade English learning during a pandemic, there were 68,9% of students agreed that using video learning in the online learning process during the pandemic had a good effect on their understanding. The last finding of this research shows that learning videos for teachers have supporting factors and inhibiting factors in their use; for example: more easily understood by students because it contains audio-visual elements, do not make students bored quickly, and are easier to develop, while the inhibiting factor from using videos learning is that it takes more time in the preparation.
The Status of Pre-Islamic Arab Women: Reform and the Challenge of Fulfilling Women's Rights in Contemporary Islamic Family Law Practice Bimawan, Henri; Haeqhal, Muhammad; Marhadi; Rafi Kusuma F.R; Try Rama Bagus Sanjaya
Legitima : Jurnal Hukum Keluarga Islam Vol. 7 No. 2 (2025): Legitima : Jurnal Hukum Keluarga Islam
Publisher : Universitas Islam Tribakti Lirboyo Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33367/fv66cf88

Abstract

Purpose - This study aims to analyze the social status of Arab women during the Jahiliyyah period, within the context of the patriarchal social system that dominated Arab society at that time, and to evaluate how these conditions influenced the development of contemporary Islamic family law, particularly in terms of fulfilling women's rights. Methods - The research method used was a literature study with a historical approach. The primary data in this study consisted of verses from the Qur'an, while the secondary data included scientific references related to the research theme. Data were collected using documentation techniques and analyzed using content analysis techniques. Findings - The status of women in pre-Islamic Arabia was very marginalized, and they did not have proper legal status (in terms of inheritance, marriage, and social status). The arrival of Islam brought significant changes that improved the status of women by granting them basic rights. Reform efforts undertaken by Muslim countries, such as restrictions on polygamy, child custody rights, and fairer inheritance rules, are manifestations of the spirit of the Qur'an in creating justice and protecting women's rights. Research implications - Practically, the findings can be used as a basis for normative reflection for family law legislation with a gender justice perspective in contemporary Muslim societies. Originality/value - The originality of this research lies in its critical approach to the dominant narrative about pre-Islamic Arab women and its contextual connection to the development of Islamic family law.
Understanding Tourist Preferences for Sustainable Tourism Practice in Central Europe Wicaksono, Tutur; Marhadi
Journal of Tourism and Economic Vol. 7 No. 2 (2024): Edisi 14 Des 2024
Publisher : STIE Pariwisata API Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36594/jtec/qsp9wk69

Abstract

This study examines how tourists prioritize sustainable practices in Central Europe using the Kano model. With the growing importance of sustainability in tourism, there is limited research on how tourists evaluate different sustainable practices in this region. The objectives are to classify sustainable tourism practices into five Kano quality categories based on tourist preferences and to identify the key practices tourists prioritize when selecting destinations. A quantitative approach was used, surveying 250 tourists in Budapest, who rated 12 sustainable tourism practices. The data were analysed to categorize these practices as "Must-be," "One-dimensional," "Attractive," "Indifferent," or "Reverse." The results revealed that environmental conservation (M = 84.4%), wildlife-friendly tourism (M = 77.6%), and waste reduction (M = 75.2%) were the top priorities, classified as "Must-be" attributes, indicating their essential role in tourist satisfaction. In contrast, fair trade practices (68.8%) received lower priority. These findings suggest that tourists in Central Europe place more value on visible environmental sustainability efforts rather than ethical practices like fair trade. The study highlights the importance of focusing on environmental conservation, wildlife protection, and waste reduction in tourism strategies. By understanding these preferences, tourism stakeholders can develop strategies that align with tourists' priorities, supporting both sustainability and economic growth in the region.
Co-Authors Bimawan, Henri Chairunnisa Endi Adriansyah Haeqhal, Muhammad M. Syaiful Nora, Fitrisia Peppy Herawati Pramono, M. Sidik Pratama, Aulia Intan Rafi Kusuma F.R Rifqi Sufra Suzana, Asih Try Rama Bagus Sanjaya