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All Journal Bumi Lestari Jurnal Sains dan Teknologi Jurnal Sains dan Teknologi Jurnal Teknik Sipil Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences Jurnal Dampak Jurnal Rekayasa Sipil dan Lingkungan RACIC : Rab Construction Research Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Penelitian Pendidikan IPA (JPPIPA) Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Al-Ard: Jurnal Teknik Lingkungan Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Jurnal Penelitian IPTEKS JURNAL TEKNIK Neo Teknika: Jurnal Ilmiah Teknologi Jurnal Teknik Sipil dan Teknologi Konstruksi Jurnal Daur Lingkungan KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Journal of Infrastructure and Civil Engineering Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Techno SAINSTEK Jurnal Meteorologi dan Geofisika JURNAL REKAYASA KIMIA & LINGKUNGAN
Lita Darmayanti
Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Potensi Daur Ulang Sampah Domestik Di Wilayah Pengembangan I Kota Pekanbaru Putri, Dini Riskiana; Yenie, Elvi; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study aims to determine the data generation, composition, physical and chemical characteristics of domestic waste and the potential for recycling in the Development Area I of Pekanbaru City based on the level of income levels of the High Income, Medium Income and Low Income. The data generated can be used for planning and development for waste management systems. Determination of waste generation is done based on SNI 19-3964-1994 method. The results showed that Sukajadi District's solid waste generation was in the weight unit of 0.407 kg / o / day and a volume unit of 2.86 l / o / day, Senapelan District in the weight unit of 0.383 kg / o / day and a volume unit of 2.64 l / o / day, Pekanbaru City District in units of weight 0.396 kg / o / day and volume units 2.61 l / o / h, Lima Puluh District in weight units 0.373 kg / o / day and volume units 2.13 l / o / day and Sail District in weight units 0.383 kg / o / day and volume unit 2.53 l / o / day. Waste composition in Pekanbaru City Development Area I is dominated by organic waste by 48%. Physical characteristics of brupa gravity specific gravity is 0.09 kg / l and compaction factor is 1.07 l / day. Chemical characteristics for water content are 35.80%, volatile content is 58.73%, ash content is 1.64% and fixed carbon is 3.83%. potential for waste recycling Domestic Development Region I Pekanbaru City is divided into two types of recycling, namely composting final product at 462.738 kg / day and Recyclable at 131.08 kg / day. Keywords: domestic waste, waste generation, composition of waste, potential for waste recycling
Pengaruh Ukuran Saringan Dan Suhu Pembakaran Terhadap Membran Keramik Untuk Menyisihkan Zat Organik Dan Warna Pada Air Gambut Febriansyah, M.; Darmayanti, Lita; HS, Edward
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Peat water has a high concentration of organic substances and is brownish red when consumed directly will have a negative impact on health. Ceramic membrane is a technology that can be used to filter and absorb organic matter and color in peat water. Therefore, this article will present a brief review of making ceramic membrane from clay and rice husk for the remove color and organic matter from peat water. Keywords : ceramic membrane, filtration, peat water
Penentuan Isoterm Adsorpsi Komposit Spent Bleaching Earth (SBE) - Mushroom Substrate (SMS) Sebagai Adsorben Logam Cu2+ Rezeki, Muhammad Dio; Yenie, Elvi; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Copper (Cu) is a heavy metal that is toxic and can accumulated in the body. The limits of the highest concentration of this element in contamined waters range from 1-5 mg/l. Adsorption is a simple method that has proven to be quite enough effective to treating liquid waste. Isotherms of adsorption shows that the variations of adsorben and adsorbate that occur in solution at constant temperatures. The adsorption approach model in this study is isothermic adsorption. The determination of Cu2+ metal adsorption isotherms by the SBE-SMS adsorben composite is determined using the linear regression method and from the regression equation will be obtained the R2 value. The relation coefficient value from the Langmuir isother equation is obtained the value of R2 = 0.4065 and in the Freundlich isother equation obtained the value of R2 = 0.6999. From the results of Cu2+ metal adsorption research using adsorben composite spent bleachin earth (SBE) – spent mushroom substrate (SMS) it is known that isotherms adsorption that occurs following isotherm Freudlich model.Key words: Composite, Copper (Cu), Isotherm Adsorption, Spent Bleaching Earth (SBE), Spent Mushroom Substrate (SMS)
Pengolahan Air Gambut Dengan Teknologi Biosand Filter Dual Media Usman, Ratika; Darmayanti, Lita; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Clean water fulfillment become a common problem and yet to be solved  especially for isolated countryside area. Clean water can be defined as daily needs water and its quality should fulfill the requirement of healthy water based on laws and can be drinked when it is cooked.  High demand of clean water for peat area community  made this research to be important.   The utilization of simple water treatment system is expected to solve the problem of clean water for the comunity. Treatment method used in this research is biosand filter with dual media of pumice and quartz sand. Water quality parameter tested are pH, color, solution degree, and organic contain (KmnO4). Statistical analysis used in this research is two ways varian analysis (Anova). The result of the research shows that the best arrangement of filtering media layers are pumice at the top and quartz sand underneath it and for the thickness of the filtering media, the best thickness to used is 40 cm of pumice thickness and 20 cm of quartz sand thickness. Dual media biosand filter can generate maximum efficiency in raising pH value of 36,54%, lowering peat water solution level of 88,41 %, lowering peat water color value of 92 ,33 % and also lowering organic content of 93,24 %. Keywords : dual media biosand, peat water, pumice , sand.
Ketahanan Beton Mutu Tinggi Di Lingkungan asam Pandiangan, Jaya Alexander; Olivia, Monita; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This research studies the durability of high strength concrete in acidic environment likes peat water and sulfuric acid solution. The high strength concrete will immersion in that both solution. After that, concrete will testing by mechanics and physical behavior likes compressive strength test, permeability test, porosity test, mass lost, visual changes, and acidic depth penetration by age of concrete. The main indictor of acidic solution in this reseach is point of hydrogen (pH) by solution. The range of pH by peat water are 4.00 – 5.00 and sulfuric acid is is 5.00. The limited of compressive strength of the test spesimen is 50 MPa. This research gives the decrease of compressive strength by age in peat water immersion, whereas in sulfuric acid immersion this research shows the increase of compressive strength by age. The value of permeability of concrete in peat water immersion show the increase of permeability by age, but in sulfuric acid immersion the value of permeability increase in 28 days immersion and then decrease in 91 days immersion. Percent of porosity increase in 28 days immersion and decrease in 91 days immesion in peat water and sulfuric acid solution. Weight change test shows the dercrease of weight of the test speciment from all solution. The visual inspection changes test gives colouring changes onlyin test specimen in acidic solution and the result of depth penetration acid test is not showed the different result.  Keyword: Peat water, sulfuric acid, high strength concrete, mass lost, compressive strength, acidic penetration, permeability, pH, porosity, visual inspection
Analisa Gugus Fungsi Komposit Adsorben Berbahan Spent Bleaching Earth (SBE) Dan Spent Mushroom Substrate (SMS) Husni, Afdaul; Yenie, Elvi; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Spent Bleaching Earth (SBE) is a solid waste generated in the stages of the process of purification of oil in the vegetable oil industry, while the Spent mushroom substrate (SMS) is one of the waste biomass resulting from the production of mushrooms. The second material is the waste that has been tdik used anymore, and if not used back can cause environmental pollution. This study aims to determine the functional groups of the composite adsorbent using the method of FTIR spectra with the variation of the composition of the SBE-SMS 25: 75 %. Composite that has been made then were characterized by the methods of FTIR to analyze the cluster function. FTIR analysis of the composite adsorbent after the test FTIR known to the presence of hydroxyl group (O-H), cluster C=O (ketone, amide, ester, carboxyl and aromatic compounds), phosphate groups (P-OH), a cluster of aluminum silica (Si-O-Al) and cluster siloxane (Si-O-Si).Key words: Composite, FTIR, Spent Bleaching Earth, And Spent Mushroom Substrate.
Penggunaan Biokoagulan Dari Biji Tanaman Untuk Menurunkan Kekeruhan Pada Air Sungai Olivia, Arinda; Darmayanti, Lita; Fitria, Dewi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The problem that is often found in raw water sources, namely surface water or river water, is that it tends to have high turbidity concentrations. This turbidity is basically caused by particles that are difficult to settle. One method that can be used to remove turbidity in water is the coagulation and flocculation processes. This study aims to determine the biocoagulant ability of papaya seeds to reduce turbidity in river water, by varying the dose of coagulant 0.2 gr / l; 0.4 gr / l; 0.6 gr / l; 0.8 gr / l; 1.0 gr / l and 1.2 gr / l. The results obtained showed that the highest turbidity removal was at a coagulant dose of 0.6 gr / l with an efficiency of 87.42%. Keywords: coagulation and flocculation, biocoagulant, papaya seeds, turbidity
Pengolahan Air Limbah Kegiatan Laundry Menggunakan Metode Floating Treatment Wetland (Wastewater Treatment Of Laundry Activities Using Floating Treatment Wetland Method) Norima Sabrina; Lita Darmayanti; Yohanna Lilis Handayani
Jurnal Penelitian IPTEKS Vol 6, No 2 (2021): JURNAL PENELITIAN IPTEKS
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/ipteks.v6i2.5589

Abstract

Aktivitas manusia sehari-hari menghasilkan air limbah yang berpotensi mencemari lingkungan salah satunya adalah kegiatan laundry. Air limbah laundry biasanya dibuang tanpa mengalami pngolahan sebelumnya. Salah satu teknologi pengolahan air limbah yang mudah untuk diaplikasikan adalah floating treatment wetland. Penelitian ini bertujuan untuk mempelajari pengaruh surface coverage dan waktu detensi pada floating treatment wetland dengan menggunakan tanaman akar wangi untuk mengolah air limbah laundry. Variasi yang diteliti adalah waktu detensi (5, 10, dan 15 hari) dan surface coverage (5%, 10%, dan 15%). Parameter kualitas air yang diuji adalah pH, COD, dan TSS. Uji statistik yang digunakan dalam penelitian ini adalah Anova (analisis varian) dua jalur. Hasil penelitian menunjukkan bahwa floating treatment wetland menghasilkan efisiensi tertinggi dalam menurunkan pH dari 9,4 menjadi 7,4, COD dari 1230 mg/L menjadi 60 mg/L atau 95,12% pada waktu detensi 15 hari dan surface coverage 15%, dan TSS dari 1200 mg/L menjadi 200 mg/L atau 83,33% pada waktu detensi 5 hari dan surface coverage 15%. Hasil penelitian menunjukkan waktu detensi dan surface coverage memberikan efek signifikan terhadap efisiensi penurunan parameter pH dan COD, sedangkan pada parameter TSS tidak memberikan efek signifikan.
PENYISIHAN LOGAM CU (II) DARI LARUTAN DENGAN FLY ASH BATU BARA Lita Darmayanti; Suprihanto Notodarmodjo; Enri Damanhuri Enri Damanhuri
Neo Teknika Vol 4, No 1 (2018): Jurnal Neo Teknika Vol 4 No.1 Juni 2018
Publisher : Universitas Pandanaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (488.119 KB) | DOI: 10.37760/neoteknika.v4i1.1064

Abstract

Banyak polutan yang dilepaskan ke lingkungan dari berbagai operasi industri setiap harinya dan ini bisa dimanfaatkan secara kontinu untuk mencari adsorben baru. Salah satu limbah industri yang dihasilkan dalam jumlah banyak adalah fly ash yang merupakan limbah pembakaran batu bara. Fly ash merupakan bahan antropogenik yang kaya dengan alumina dan silika yang berpotensi untuk dijadikan adsorben logam berat. Penelitian adsorpsi untuk menyisihkan ion Cu (II) dilakukan secara batch dengan menggunakan fly ash yang didapat dari pembangkit listrik tenaga uap. Adsorpsi dipelajari sebagai fungsi pH larutan dan waktu kontak. Kinetika menunjukkan sorpsi mengikuti model pseudo second-order. Isoterm adsorpsi ion Cu (II) mengikuti persamaan Langmuir dengan baik. Kapasitas adsorpsi maksimum mencapai 10,9 mg ion Cu/g fly ash. Jumlah adsorben yang dibutuhkan untuk penyisihan maksimum ion Cu (II) adalah 10 g/L dengan efisiensi penyisihan 93,9%. Hasil penelitian menunjukkan fly ash dapat digunakan sebagai adsorben yang murah dan efektif untuk menyisihkan ion Cu (II) dalam larutan.Kata kunci: adsorpsi; fly ash; ion Cu; isoterm; kinetika
Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Fly Ash Lita Darmayanti; Suprihanto Notodarmodjo; Enri Damanhuri
Journal of Engineering and Technological Sciences Vol. 49 No. 4 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.4.9

Abstract

The ability of fly ash to adsorp Cu(II) ions from two different coal combustion systems was studied. Optimum removal was found at pH 5, contact time 30 minutes and 60 minutes for Fly Ash 1 and Fly Ash 2, respectively, and dosage 10 g/l. The difference in adsorption capacity between both fly ashes may be due to their carbon fraction and CaO content. The removal of Cu (II) ions was caused by both adsorption and/or precipitation. Precipitation is enhanced by lowering the carbon fraction and increasing the CaO content. The adsorption isotherm showed that the Langmuir model fitted well to the experimental data of both fly ashes. A thermodynamic study was conducted at three different temperatures: 25 °C, 45 °C, and 60 °C. The adsorption processes were spontaneous and endothermic and were more favorable at higher temperature.
Co-Authors AA Sudharmawan, AA Alex Kurniawandy Amalia Masturah Aminuyati Annam, M. Khairul Annisa Arifandita Mifshella Arhamny Arhamny Ari Sandhyavitri Aryo Sasmita Atria Martina Bambang Sujatmoko Benny urzikri Rahim Cahyani, Anugrah Damanhuri, Enri Damayanti, Elok David Andrio Desasy, Hannifah Julian Desce P Simarmata, Stella Dewi Fitria Dewi Fitria DEWI FITRIA, DEWI Dian Kharisma Dewi Dian Paramita Dwiegi Safitri Febriani Dwiegi Safitri Febriani Edward HS Edward Hs Edward Sitio Edy Saputra Elvi Yenie, Elvi Enri Damanhuri Enri Damanhuri Enri Damanhuri Ermiyati Ermiyati Eryan Chintya Debby Esther RA Fadli Dirga Subardi Fauzi, Manyuk Febiola, Ollga Febriana, Hertina Febriansyah, M. Ferdy Ashari Syawal Fika Rahma Yuni Fika Rahma Yuni Fikri Julian Fitra, Rakha Athaya Grethy Asmara Sitorus Habrio Ilva YR Hamdani . Hamdani Hamdani Hendriani, Annisa Hesti, Tsaniatul Amania Husni, Afdaul Imelda Dewi Agusti Iqbal Perdana Putra Jaya Alexander Pandiangan Jecky Asmura Kartika Pratama Syafitri Khairani , Ayu Dhea Kholik, Dede Abdul Leowedi, Agung Lidya Astuti Lisa Asmiyarna Lisa Asmiyarna M. Khairul Annam M. Ridwansyah Mahardika, Dewa Ayu Divia Pradhaswari Mahombar, Boby Steven Marta Yudha Ozman May Kristina Maya Septiani Wijaya Monita Olivia Muhamad Yusa Muhammad Hasbu Nazar Muhammad Ramadhan Saputra Muhardi Muhardi Mutia Putri Mutia Putri Nadia Yulia Lestari Nadya Dwi Permatasari Vionola Norima Sabrina Novriyanti, Lucky Okdika Berliandra Olivia, Arinda Oni Loretha Priscilia P Girsang, Yemima Priyambada, Gunadi Purwoko, Agus Putri, Dini Riskiana Putri, Nofia Afifah Regina Deva Aulia Reynaldi Saputra Rezeki, Muhammad Dio Rilian Gerry Sitompul Ririn Yuari Farandia Roma Dearni Ryan Renaldi S Siswanto Safitri, Nurramadhani Saputra, Muhammad Ramadhan Sarah Dwi Arini Shinta Elistya Shinta Elystia Sigalingging, Krisda Novita Soewignjo Agus Nugroho Sri Febria Suci, Nabila Rahma Suprihanto Notodarmodjo Suprihanto Notodarmojo Sutikno, Sigit Syamsul Arifin Syarfi Daud Tania Octalina Tamamy Ucok H Pulungan Usman, Ratika Winda Astuti Halinda Putri Wulandari Wulandari Yasmin Nabila Dharma Yogi Guntara Yohanna Lilis H