Reusing water and excess detergent from the laundry industry has become an attractive method to combat water shortages. Membrane filtration is considered an advanced technique and highly attractive due to its excellent advantages. However, the conventional membrane filtration method suffers from membrane fouling, which restricts its performance and diminishes its economic viability. This study assesses the preliminary performance of submerged, gravity-driven membrane filtration—under ultra-low trans-membrane pressure (△P) of <0.1 bar—to combat membrane fouling issues for detergent and water recovery from laundry wastewater. The results show that even under ultra-low pressure, the membrane suffered from compaction that lowered its permeability by 14% under △P of 6 and 10 kPa, with corresponding permeabilities of 2085 ± 259 and 1791 ± 42 L/(m2 h bar). Filtration of a detergent solution also led to up to 8% permeability loss due to membrane fouling. During the filtration of laundry wastewater, 80–91% permeability loss was observed, leading to the lowest flux of 15.6 L/(m2·h) at △P of 10 kPa, 38% lower than △P of 6 kPa (of 25.2 L/(m2·h)). High △P led to both the membrane and the foulant compaction inflating the filtration resistance. The system could recover 83.6% of excess residual detergent, while most micelles were rejected (ascribed from 71% of COD removal). The TDS content could not be retained, disallowing maximum resource recovery. A gravity-driven filtration system can be self-sustained with minimum supervision in residential and industrial laundries. Nevertheless, a detailed study on long-term filtration performance and multiple cleaning cycles is still required in the future.
Tujuan penelitian ini untuk mengetahui bagaimana respon mahasiswa pendidikan Matematika terhadap gagasan pembelajaran mobile berbasis kearifan lokal dan kepariwisataan di UNDIKMA Mataram. Subjek ini menggunakan 40 orang mahasiswa program studi pendidikan matematika UNDIKMA Mataram TA.2019/2020 yang diambil dengan metode simple random sampling. Data respon mahasiswa tentang gagasan pembelajaran mobile berbasis kearifan lokal dan kepariwisataan dikumpulkan menggunakan angket. Instrumen pengukuran yang digunakan yakni instrument angket pembelajaran berbasis kearifan lokal dan kepariwisataan, angket pemanfaatan teknologi mobile, dan angket respon mahasiswa terhadap pembelajaran mobile berbasis kearifan lokal dan kepariwisataan. Hasil penelitian menunjukkanbahwa gagasan pembelajaran mobile berbasis kearifan lokal dan kepariwisataan pada Prodi Matematika sangat diperlukan. Hal ini ditunjukkan dari hasil penelitian pada tiap-tiap angket. Total rata-rata hasil dari observasi pembelajaran berbasis kearifan lokal dan kepariwisataan sebesar 37.4 yang terbilang rendah, dan pada data hasil respon mahasiswa terhadap pembelajaran mobile berbasis kearifan lokal dan kepariwisataan pada mata kuliah- mata kuliah MIPA sebesar 64.30 yang terbilang tinggi, dan pada data hasil pemanfaatan teknologi mobile dalam pembelajaran sebesar 64.25 yang terbilang tinggi.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.