Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal WAKTU: Jurnal Teknik UNIPA JiTEKH (Jurnal Ilmiah Teknologi Harapan)
Dian Majid
Teknik Lingkungan, Universitas PGRI Adi Buana, Surabaya, Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Potensi salvinia molesta dan pistia stratiotes dalam penurunan kadar fosfat, BOD, dan COD pada limbah cair laundry Imelda Wulansari Tuye; Joko Sutrisno; Dian Majid
WAKTU: Jurnal Teknik UNIPA Vol 21 No 02 (2023): WAKTU: Jurnal Teknik UNIPA
Publisher : Fakultas Teknik , Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/waktu.v21i02.7727

Abstract

Tingginya kadar fosfat, BOD, dan COD disebabkan oleh pembuangan limbah dari kegiatan laundry ke dalam badan air tanpa pengolahan yang memadai. Penelitian ini bertujuan untuk mengurangi kadar fosfat, BOD, dan COD dengan menggunakan berbagai jenis tanaman. Tanaman yang digunakan dalam penelitian ini meliputi Pistia stratiotes, Salvinia molesta, serta kombinasi kedua jenis tanaman tersebut. Metode eksperimen yang digunakan adalah sistem batch. Hasil penelitian menunjukkan bahwa tanaman Pistia stratiotes dan Salvinia molesta efektif dalam menurunkan kadar fosfat, BOD, dan COD. Kadar fosfat mengalami penurunan sebesar 39%, 41%, dan 44% pada reaktor I, II, dan III masing-masing. Kadar BOD mengalami penurunan sebesar 90%, 86%, dan 91% pada reaktor I, II, dan III masing-masing. Selain itu, kadar COD juga mengalami penurunan sebesar 91%, 87%, dan 91% pada reaktor I, II, dan III. Secara keseluruhan, kombinasi tanaman Pistia stratiotes dan Salvinia molesta menunjukkan hasil yang paling efektif dalam mengurangi fosfat, BOD, dan COD pada limbah laundry. Oleh karena itu, tanaman-tanaman tersebut dapat digunakan dengan baik untuk mengurangi pencemaran limbah industri.
Analisis dan Uji Korelasi Tingkat Kebisingan Lalu Lintas: Ruas Jalan Bundaran Waru Kota Surabaya Mohammad Maghfur Ali; Dian Majid
JITEKH Vol 11 No 2 (2023): September 2023
Publisher : Universitas Harapan Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35447/jitekh.v11i2.803

Abstract

Abstract−This study aims to analyze noise levels and provide recommendations for noise control. Noise tests were conducted using a sound level meter, in accordance with the SNI 8427-2017 standard, at three sampling points. Data analysis covered vehicle volume (in emp), average noise levels (Ls), correlation tests, and control recommendations. Data processing was carried out using Microsoft Excel, SPSS (25), and Sketchup software. The results showed that the highest vehicle volume reached 2,090 vehicles per hour with a composition percentage of motorcycles (MC) at 69.3%, light vehicles (LV) at 56.2%, and heavy vehicles (HV) at 9.4%, in line with the emp values of MKJI (1997). The noise level (Ls) reached a fairly high level, hitting 72.5 dB. There is a moderate to very strong relationship between vehicle volume and noise levels (with correlation values ranging from 0.450 to 0.874). To control the noise, it is suggested to add vegetation barriers such as Acacia trees and Sebe shrubs, which can enhance the effectiveness of existing barriers in reducing noise to below the quality standard as per the Minister of Environment Regulation No. 48 of 1996 for residential and commercial areas
Co-Authors Imelda Wulansari Tuye Joko Sutrisno Mohammad Maghfur Ali