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Reri Afrianita
Laboratorium Air Jurusan Teknik Lingkungan Universitas Andalas
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Nursing Public Health Veterinary Other

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Journal : Jurnal Dampak

 1 
EFISIENSI DAN KAPASITAS PENYERAPAN FLY ASH SEBAGAI ADSORBEN DALAM PENYISIHAN LOGAM TIMBAL (Pb) LIMBAH CAIR INDUSTRI PERCETAKAN DI KOTA PADANG Reri Afrianita; Yommi Dewilda
Jurnal Dampak Vol 10, No 1 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.10.1.1-10.2013

Abstract

ABSTRAKPenelitian ini bertujuan untuk menentukan kondisi optimum fly ash sebagai adsorben dalam menyisihan logam timbal (Pb). Penelitian adsorpsi dilakukan secara batch dengan menggunakan larutan artifisial Pb dengan variasi diameter adsorben, berat adsorben, waktu kontak dan kecepatan pengadukan. Hasil penelitian diperoleh kondisi optimum untuk setiap variasi parameter adalah diameter adsorben 0,075-0,14 mm, berat adsorben 1 gam, pH adsorbat 4, waktu kontak 60 menit, dan kecepatan pengadukan 120 rpm. Dapat disimpulkan makin kecil adsorben, maka semakin luas permukaan aktif pada adsorben serta kecepatan pengadukan yang rendah menyebabkan kurang efektifnya tumbukan yang terjadi antar adsorben dan adsorbat.Kata kunci: adsorpsi, fly ash, logam timbal (Pb), kondisi optimum.ABSTRACTThe aim of this research is to determine optimum conditionof fly ash as the adsorbent in the removal of lead (Pb) in water. The research was conducted in a batch method by using artificial Pb with different adsorbent diameters, contact times and mixing rates. Result showed the optimum condition of adsorbent diameter was 0.075-0.14 mm with weight of 1 gram, adsorbate pH of 4, contact time of 60 minutes, and the mixing rate of 120 rpm. From this research, it can be concluded that the less of adsorbent size will lead to the larger active surface area and the slower mixing rate will cause to the less effectiveness of adsorbent and adsorbate collision in water.Keywords:adsorption, fly ash, lead (Pb), optimum condition
Analisis Intrusi Air Laut dengan Pengukuran Total Dissolved Solids (TDS) Air Sumur Gali di Kecamatan Padang Utara Reri Afrianita; Tivany Edwin; Aroiya Alawiyah
Jurnal Dampak Vol 14, No 1 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.14.1.62-72.2017

Abstract

This research aims to analyze the effect of seawater intrusion with measurement of TDS dug well water in Padang Utara Subdistrict. The measurements of TDS carried out in three villages in Padang Utara Subdistrict, namely the Village are Air Tawar Barat, Ulak Karang Selatan, and Ulak Karang Utara with twice sampling frequency: on November 2015 and February 2016. TDS concentration in November 2015 is in the range of 20 to 9000.8 mg / L, while the measurement of TDS concentration in February 2016 is in the range of 160.8 to 735.2 mg / L. Measurement of TDS in November 2015 showed that there were three wells that indicated to seawater intrusion, i.e. the ULS 8 (1101.6 mg / L), ULS 9 (9000.8 mg / L), and ULU 6 (1926.4 mg / L). Correlation between TDS concentration with coastline distance have a value r amounted to 0,118-.095. The results showed that there are some wells that indicated to seawater intrusion along the coast in Padang Utara Subdistrict.Keywords : distance, dug wells Padang Utara Subdistrict, , seawater intrusion, TDSAbstrak-Penelitian ini bertujuan untuk menganalisis pengaruh intrusi air laut dengan pengukuran TDS pada air sumur gali di Kecamatan Padang Utara. Pengukuran TDS dilakukan di tiga kelurahan di Kecamatan Padang Utara yaitu Kelurahan Air Tawar Barat, Ulak Karang Selatan, dan Ulak Karang Utara dengan frekuensi pengambilan sampel sebanyak dua kali yaitu pada bulan November 2015 dan Februari 2016. Konsentrasi TDS pada November 2015 berada dalam rentang 20-9000,8 mg/L, sedangkan pengukuran konsentrasi TDS pada Februari 2016 berada dalam rentang 160,8-735,2 mg/L. Pengukuran TDS pada ovember 2015 menunjukkan bahwa terdapat tiga sumur yang yang terindikasi mengalami intrusi air laut, yaitu ULS 8 (1101,6 mg/L), ULS 9 (9000,8 mg/L), dan ULU 6 (1926,4 mg/L). Hubungan antara jarak sumur dari bibir pantai terhadap nilai TDS memiliki koefisien korelasi sebesar 0,118 0,095, hal ini menunjukkan tidak adanya pengaruh antara jarak dengan nilai TDS. Hasil penelitian menunjukkan bahwa terdapat beberapa sumur yang terindikasi mengalami intrusi air laut di sepanjang pesisir di Kecamatan Padang Utara.Kata kunci : intrusi air laut, jarak, Kecamatan Padang Utara, sumur gali, TDS
Evaluasi Tingkat Kebisingan Kawasan Selatan Universitas Negeri Padang Vera Surtia Bachtiar; Reri Afrianita; Ary Zamzamy
Jurnal Dampak Vol 15, No 1 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.15.1.7-15.2018

Abstract

This study aims to determine and evaluate the level of noise in the southern area of Universitas Negeri Padang (UNP) Kampus Air Tawar conducted at 23 points of measurement with 16 outside outdoor points and 7 indoor measurement points. Method of measurement under regulation of Indonesian government, KepMenLH Regulation no. 48 thn 1996 which regulate the noise level standard by using SLM (Sound Level Meter). The highest outdoor noise level occurs in front of GOR UNP (S16) at the time of L3 which is 80,91 dBA, while the highest indoor noise level when there was activity as well as no activity in the room was happened in lecture hall FBSS UNP (S7-interior) with value equal to 83, 99 dBA and 64.65 dBA. All points of a total of 16 outdoor and 7 indoor measurement points exceed the standard noise level threshold which is 55 dBA (+3 dB tolerance). However, from the questionnaire results most respondents just feel slightly disturbed by outdoor noise in the study area. The noise control that can be done such as cultivate number of natural vegetation such as heliconia sp, tea, acacia tree and pringgodani bamboo, also the installation of continuous wall from type of clear fiber that serves as building noise absorbers.
Co-Authors Amirul Luthfi Aroiya Alawiyah Ary Zamzamy Asri Astia Ningsih Astri Astia Ningsih Aulia Massyaf Putri Danar Adi Laksono Danir, Resi Meilinta Danir Fajri Dwi Arya Gunawan, Eko Amri Hadi, Refa Nabila Hanalde Andre Laksono, Heru Dibyo Latif , Melda Melda Latif Micko Tomas Mumuh Muharam Novizon, Novizon Pratama, Rizki Wahyu Putra, Ilham Hagi Reski Anggika Reski Anggika Ridwan Ridwan Ridwan Ridwan Ridwan, Ridwan Rifka Indriani Tivany Edwin Vera Surtia Bachtiar Yar Gustina Yega Serlina Yogi Kurniawan, Yogi Yommi Dewilda Zulkarnaini Zulkarnaini