Claim Missing Document
Check
Articles

Found 3 Documents
Search

Recycling End-of-Life (EoL) Reverse Osmosis (RO) Membranes into Ultrafiltration Membranes using Potassium Permanganate (KMnO4) for Aquaculture Water Filtration Putri, Raden Rara Dewi Artanti; Triwibowo, Bayu; Prasetiawan, Haniif; Salwa, Dian Fatimatus; Fauziah, Whilda; Pradana, Daffa Zamiira; Aldiansar , Divifan Armyko
Sainteknol : Jurnal Sains dan Teknologi Vol. 23 No. 2 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v23i2.32896

Abstract

Sustainable and economical management of aquaculture water is a significant challenge in the fisheries industry. This study aims to convert End-of-Life (EoL) Reverse Osmosis (RO) membranes into Ultrafiltration (UF) membranes using a potassium permanganate (KMnO4) solution as an oxidizing agent to enhance the efficiency of aquaculture water filtration. The conversion process involves immersing the used RO membranes in a 4,5% w/v KMnO4 solution for 3 days at room temperature. Prior to conversion, the membranes were cleaned using a 0,1% w/v Sodium Dodecyl Sulfate (SDS) solution and 0,05 M Ethylenediaminetetraacetic Acid (EDTA) to remove organic and inorganic contaminants. The results showed an increase in water flux from 20 L/m²•h to 50 L/m²•h after conversion. The analysis of aquaculture water quality after filtration using the converted UF membranes showed a significant reduction in Biological Oxygen Demand (BOD) from 5,547 mg/L to 3,817 mg/L, representing 31,2% reduction, and Chemical Oxygen Demand (COD) from 29,91 mg/L to 24,22 mg/L, representing 19% reduction. The membranes were highly effective in removing coliforms, achieving a 100% reduction from 180 MPN/100mL to 0 MPN/100mL. The values of DO and TDS decreased by only about 2%, salinity values remained unchanged, while total ammonia increased. The conversion process increases efficiency filtration, reduces operational costs, and decreases membrane waste. 
Penguatan Desain Kemasan Pupuk Kotoran Sapi dalam upaya Pemberdayaan Kelompok Tani “Dewi Sri”: Strengthening the Design of Cow Manure Fertilizer Packaging to Empower The "Dewi Sri" Farmer Groups Wijaya, Muhammad Burhan Rubai; Damayanti, Astrilia; Kurniawan, Adhetya; Wibowo, Muhammad Yusuf; Ar Rasyid, Moh. Rizal; Salwa, Dian Fatimatus; Fitri, Amelia
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 8 No. 6 (2023): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v8i6.5590

Abstract

The “Dewi Sri” Farmers Group is located in Terwidi Hamlet in Plalangan Village, Gunungpati, Semarang City, where part of the population raises various livestock, namely cows, goats and poultry. The problem that occurs is the accumulation of cow dung which causes environmental pollution. This service activity aims to overcome the buildup of livestock waste, especially cow manure by using it as organic fertilizer and then packaging it with an attractive design so that it has a high selling value. The methods used are preparation, socialization, and mentoring. The results obtained from this activity, the preparation/coordination stage with the head of KT Dewi Sri, the socialization stage in the form of an explanation of the innovative packaging design, and the mentoring stage in the form of the issuance of a Packaging Design Copyright by the Directorate General of Intellectual Property.
Developing integrated digital printing learning module on thematic lessons for students with mental retardation Nurjaya, Nurjaya; Salwa, Dian Fatimatus; Nabil, Nisrina Hasna'; Wibowo, Muhammad Yusuf; Istighfaroh, Maulina
International Journal on Education Insight Vol. 3 No. 2 (2022)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/ijei.v3i2.6256

Abstract

Education is important for every human because we can think and have a lot of knowledge for life. Children with special needs for mental retardation have problems or problems during the learning process, one of them is thematically. The Research and Development (R&D) research method is carried out by studying research related to the product, developing a product based on these findings, testing it in the field in a setting, and revising it to correct deficiencies found at the proposed testing stage. The development model used in this research is the Analyze, Design, Develop, Implement, and Evaluation (ADDIE) model. Analysis of the needs of mentally retarded students found the competencies need to be improved are the ability to read, write and count or commonly called calistung. This model will develop a learning media. The learning media that will be developed are in the form of modules intended for students with mental retardation in grade 2 elementary school (SD). The module was then developed into a learning module that is integrated with digital media. This development resulted in a product in the form of a printed module of the hypercontent type of digitally integrated thematic subject for grade 2 students of the Elementary School with Special Requirements. This module can help the teaching and learning process that is suitable to be applied to mentally retarded children.