Article Per Year (5 Year)
p-Index From 2019 - 2024
0.61
P-Index
This Author published in this journals
All Journal EnviroScienteae Jukung (Jurnal Teknik Lingkungan) Comment: an International Journal of Community Development Jurnal Natural Scientiae (JNS)
Mahmud Mahmud
Program Studi Teknik Lingkungan, Fakultas Teknik Universitas Lambung Mangkurat
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Other

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
PENGARUH TATA GUNA LAHAN TERHADAP FLUKTUASI DEBIT EMBUNG KAMPUNG BANJAR DI WILAYAH PERKANTORAN PROVINSI KALIMANTAN SELATAN Mahmud Mahmud; Ahmad Kurnain; Rizqi Puteri Mahyudin; Fitria Hutabarat
EnviroScienteae Vol 18, No 1 (2022): ENVIROSCIENTEAE VOLUME 18 NOMOR 1, APRIL 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v18i1.12975

Abstract

This study was conducted to find out  the value of the drainage coefficient of the office area in South Kalimantan under the existing conditions, the effect of land use changes on fluctuations in discharge at Embung Kampung Banjar and the green open space that must be available with the existence of Embung Kampung Banjar. The existence of Embung Kampung Banjar is expected to reduce the impact of excessive rainfall which causes various kinds of natural disasters. This study usesd the Rational Method analysis to get the value of rainfall intensity in determining the planned discharge, the method of analysis of the coefficient of flow and the research method used for discharge fluctuations in Embung Kampung Banjar that is simulated with the synthetic unit hydrograph ITB –2 Kirpich, Snyder and Mononobe which all calculations by useng Microsoft Excel . The results shows that the simulation of land use change by adding the area of residential housing and offices are evidence of reduced open areas. The calculation of the maximum discharge coefficient of the existing flow using the Synthetic Unit Hydrograph (HSS) ITB 2 Timelag Kirpich of 7.83 m3/s and the results of flood tracking caused a decrease in peak discharge of 5.4 m3/s the largest land use change was found in the flow coefficient is 0.499 with a maximum discharge of 9.69 m3/s where the housing area is 0.85 km2 and offices are 0.47 km2. In Indonesian Law Number 26 of 2007 on Spatial Planning Article 29 paragraph 3 regarding the proportion of Green Open Space (RTH) about 20 percent of the city area. The calculation results of the peak discharge capacity of Embung Banjar Kampung which is equal to 6.8963 m3/s equal to 15 percent of the flow area of Embung Kampung Banjar which is obtained from the maximum discharge calculation, which is 9.69 m3/s. Then the results of the routing flood that caused a decrease in the discharge amounted to 6.6 m3/s, so the overall result is that the reservoir is still safe if overflow occurs in the reservoir.
ANALISIS DERAJAT KEASAMAN DAN OKSIGEN TERLARUT PADA AIR ASAM TAMBANG: STUDI KASUS VOID M4E-WEST DI PT JORONG BARUTAMA GRESTON Eva Rizka Octiana; Mahmud Mahmud; Rd. Indah Nirtha
Jukung (Jurnal Teknik Lingkungan) Vol 1, No 1 (2015): September 2015
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v1i1.1035

Abstract

Air asam tambang merupakan air yang sifatnya asam dan akan menggenangi suatu lubang bekas tambang apabila telah selesai dieksplorasi. Pengolahan aktif air asam tambang pada void M4E-West dengan menggunakan kapur tohor membuat pH air naik menjadi netral-basa. Pada perairan tergenang terdapat stratifikasi vertikal kualitas airnya. Penelitian ini bertujuan untuk mengidentifikasi pengaruh kedalaman terhadap perubahan nilai parameter pH dan DO air void dan menganalisis pengaruh lingkungan terhadap nilai pH air void M4E-West. Metode penelitian ini yaitu menguji parameter pH, DO, dan suhu secara insitu dan mengambil sampel air uji kandungan Fe dan Mn di laboratorium. Hasil penelitiannya itu terdapat penurunan pH terhadap waktu, nilai pH yang hampir sama di seluruh ke dalaman dan nilai DO dipengaruhi oleh kedalaman dimana semakin menuju ke dasar nilainya semakin rendah. Kondisi pH tanah di sekitar void berpengaruh terhadap nilai pH air void M4E-West.
PENGARUH PROSES HIBRID KOAGULASI DUA TAHAP DAN MEMBRAN ULTRAFILTRASI POLISULFON TERHADAP PENYISIHAN BAHAN ORGANIK ALAMI AIR GAMBUT Raissa Rosadi; Mahmud Mahmud; Chairul Abdi
Jukung (Jurnal Teknik Lingkungan) Vol 3, No 2 (2017): September 2017
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (981.011 KB) | DOI: 10.20527/jukung.v3i2.4031

Abstract

ABSTRAK Penyisihan kandungan bahan organik alami (BOA) pada air gambut dengan menggunakan membran ultrafiltrasi polisulfon mempunyai kendala berupa terjadinya fouling membran. Proses hibrid koagulasi satu tahap dan ultrafiltrasi diketahui hanya mampu menyisihkan kandungan BOA yang bersifat hidrofobik dan sebagian kandungan hidrofilik. Penggunaan koagulasi dua tahap diduga mampu mengurangi potensi fouling pada membran, serta lebih baik dalam menyisihkan kandungan BOA hidrofobik dan hidrofilik. Penelitian ini bertujuan untuk mendapatkan dosis dan tekanan optimum pada proses hibrid koagulasi dua tahap dan UF-PSf dalam menyisihkan kandungan BOA air gambut, serta mengetahui pengaruh praperlakuan koagulasi dua tahap terhadap perubahan nilai fluks pada membran UF-PSf. Proses koagulasi menggunakan alat jar test dengan koagulan Al2(SO4)3. Sistem filtrasi pada membran UF-PSf menggunakan sistem aliran dead-end. Kondisi operasi optimum pada proses hibrid koagulasi dua tahap dan UF-PSf didapatkan pada dosis 175 mg/L dan tekanan filtrasi 3 bar dengan besar penyisihan BOA zat organik KMnO4 dan UV254 berturut-turut sebesar 97,32% dan 96,02%%. Praperlakuan koagulasi dua tahap memberikan pengaruh terhadap nilai fluks yang semakin besar pada proses hibrid koagulasi dua tahap dan UF-PSf. Nilai fluks pada tekanan optimum 3 bar yaitu sebesar 154,84 L/m2.jam. Kata kunci:   Air gambut, bahan organik alami,  fouling membran, koagulasi dua tahap, membran ultrafiltrasi polisulfon. ABSTRACT  Removal of natural organic matter (NOM) on peat water by Polysulfone ultrafiltration membrane (UF-PSf) have some of promblem, namely membrane fouling. Hybrid process of one-stage coagulation and UF-PSf can remove hydrophobic and some hydrophilic content of NOM. Two stage coagulation was allegedly able to decrease membrane fouling, and better to remove hydrophobic and hydrophilic content of NOM. The purpose of this reseach is to find the optimum dose and pressure on two stage coagulation and UF-PSf hybrid process to remove NOM in peat water, and to known the effect of two stage coagulation pretreatment towards flux value changes on UF-PSf membranes. The coagulation process using jar test instrument with Al2(SO4)3 coagulant. The filtration system on the UF-PSf membrane using dead-end flow system. The optimum dose and pressure on hybrid process of two stage coagulation and UF-PSf is 175 mg/L and 3 bar with BOA removal of organic subtances KMnO4 and UV254 respectively amounted to 97,32% and 96,02%. Two stage coagulation pretreatment giving icreasing the flux value on two stage coagulation and UF-PSf hybrid process. The flux value of optimum pressure at 3 bar is 154,84L/m2.hours.  Keywords:    peat water, natural organic matter (NOM), fouling membrane, two stage coagulation,           polysulfone ultrafiltration membrane.
PENGARUH pH AIR GAMBUT TERHADAP FOULING MEMBRAN ULTRAFILTRASI Herwati Nani; Mahmud Mahmud; Chairul Abdi
Jukung (Jurnal Teknik Lingkungan) Vol 1, No 1 (2015): September 2015
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jukung.v1i1.1038

Abstract

Penggunaan membran ultrafiltrasi (UF) sebagai sistem pemisahan memiliki kekurangan yaitu terjadinya fouling pada membran akibat adanya bahan-bahan utama dalam air gambut, yaitu kontaminan biologis dan senyawa makromolekul. Salah satu penyebab fouling terbesar adalah  pH air gambut yang rendah. Tujuan dari penelitian ini adalah untuk menentukan pengaruh harga pH terhadap kinerja membran ultrafiltrasi dan pengaruhnya terhadap fouling membran ultrafiltrasi. Penentuan pengaruh pH terhadap fouling membran dilakukan dengan pengukuran fluks masing-masing pH, serta pengujian UV254 yang merupakan pengukuran terhadap kandungan Bahan Organik Alami (BOA), dan menguji perbandingan nilai ukuran molekul air gambut dengan nilai berat molekul air gambut yang dinyatakan dengan rasio E4/E6. Telah dilakukan penelitian tentang pengaruh pH air gambut terhadap fouling membran ultrafiltrasi. Total fluks terendah dihasilkan pada pH 4, sedangkan yang tertinggi pada pH 6. Persen penyisihan BOA paling besar adalah pada pH 3 dan terendah pada pH 7.Rasio E4/E6 tertinggi berada pada pH 7 yang mengindikasikan bahwa permeat yang dihasilkan hanya di dominasi oleh BOA dengan ukuran molekul kecil. Pada pH yang semakin rendah, rasio E4/E6 semakin menurun yang mengindikasikan bahwa pada pH rendah masih banyak terdapat molekul dengan ukuran besar.
Technology Application of Biopore for Reduce Run Off at SDN 2 Sungai Besar Banjarbaru Nova Annisa; Chairul Abdi; Mahmud Mahmud; Gusti Ihda Mazaya; Hafiizh Prasetia
Comment: an International Journal of Community Development Vol 4 No 1 (2021)
Publisher : Perkumpulan Peneliti Ilmu Lingkungan - Green Visioneers

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Biopores are holes in the soil formed as a result of organism activity to increase water absorption, reduce the risk of runoff, and preserve the environment. Making biopore infiltration holes is advantageous because it is practical, economical, and environmentally friendly. This community service activity aims to provide educational counseling and technical training to civitas of SDN 2 Sungai Besar Banjarbaru through the installation of biopore infiltration holes to prevent and overcome run off particularly during the rainy season. This community service activity follows a three-stage methodology: survey and observation, socialization and technical training, and practice creating biopore infiltration holes. Based on the outcomes of the activities, participation and collaboration with the residents went well and cooperatively, and the application of biopore infiltration holes was made in two locations throughout the garden. Thus, this community service activity benefited and was shared with the civitas of SDN 2 Sungai Besar Banjarbaru, particularly in terms of knowledge and skill transfer through the creation of biopore infiltration holes to prevent and overcome run off independently and sustainably.
PENGARUH KATALIS ASAM SULFAT PADA SINTESIS NITROSELULOSA TERHADAP DERAJAT SUBSTITUSI Fitriannoor Fitriannoor; Taufiqur Rohman Taufiqur Rohman; Mahmud Mahmud
Jurnal Natural Scientiae Vol 2, No 2 (2022): November 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v2i2.6671

Abstract

Effect of sulfuric acid as catalyst due to synthesis of nitrocellulose from pure cellulose towards substitusion degree had been done. The purpose of this research are to find FT-IR absorbance and substitution degree. Nitrocellulose wassynthesized using nitration method in a mixture nitric acid, sulfuric acid and water then cooled at 5OC - 15OC for 60 minutes. Results is showed that nitrocellulose synthesized has FT-IR character that the formation nitro functional group (-NO2) sharp peak at 1635 cm-1 were subtituted completely.  However the peak at 1361 cm-1 and 1288 cm-1 nitro functional group (-NO2) incompletely substituted because peak is not sharp.  So two hydroxyl functional group peak (-OH) at 3201 cm-1 and 3424 cm-1. Concluded, substitution degree using absorbance ratio from FT-IR spectrum is 2,89.
Co-Authors Ahmad Kurnain Chairul Abdi Chairul Abdi Chairul Abdi Eva Rizka Octiana Fitria Hutabarat Fitriannoor Fitriannoor Gusti Ihda Mazaya Hafiizh Prasetia Herwati Nani Raissa Rosadi Rd. Indah Nirtha Rizqi Puteri Mahyudin Taufiqur Rohman Taufiqur Rohman