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Sains Natural: Journal of Biology and Chemistry

JSN
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Published by Universitas Nusa Bangsa

ISSN : 20863446 EISSN : 2621508X DOI : https://doi.org/10.31938/jsn

Core Subject : Science, Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

Jurnal Sains Natural is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication with the objectives to explore the knowledge about natural sciences. This journal incorporates not only all branches of chemistry and biology, but also sub-disciplines like Biochemistry, Polymer, Agricultural chemistry, Environmental chemistry, etc.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 251 Documents

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ISOLASI DAN IDENTIFIKASI JAMUR ENDOFIT PADA UMBI TALAS (Colocasia esculenta (L.) Schoot) Fitria Dewi Sulistiyono; Siti Mahyuni
JURNAL SAINS NATURAL Vol. 9 No. 2 (2019): Sains Natural
Publisher : Universitas Nusa Bangsa

Isolation and Identification of Endofit Fungus in Taro Tubers (Colocasia esculenta (L.) Schoot)Endophytic fungi are fungi the living and associated in plant tissue. Association the endophytic and host are mutualism. The ability of endophytic producing a secondary compound is an opportunity to be developed. The aims of this research is isolate and identify the types of endophytic fungi in tubers of taro. The methode used microscopis and macroscopis idetify. The result types of endophytic fungi in tubers of taro are Aspergillus, Sclerotium, Fusarium, Mucor and Rhizopus.Keyword: Taro, Idetify, Endophytic fungiABSTRAKMikroorganisme endofitik adalah mikroorganisme yang hidup dan berasosiasi di dalam jaringan tanaman inang. Asosiasi yang terjadi umumnya bersifat mutualisme. Kemampuan mikroorganisme endofitik memproduksi senyawa metabolit sekunder sesuai dengan tanaman inangnya merupakan peluang yang sangat baik. Pemanfaatan mikroorganisme endofit diharapkan dapat melestarikan tanaman inangnya yang membutuhkan waktu untuk tumbuh dan berkembang. Â Tujuan dari penelitian ini adalah mengisolasi dan mengidentifikasi jenis-jenis jamur endofit yang terdapat pada umbi talas. Metode yang digunakan adalah identifikasi secara mikroskopis dan makroskopis. Hasil identifikasi dengan pengamatan secara makroskopis dan mikroskopis diperoleh genus Aspergillus, , Sclerotium, Fusarium, Mucor, dan Rhizopus.Kata kunci : Talas, Identifikasi, Kapang endofit

PRESIPITASI LOGAM BERAT LIMBAH CAIR LABORATORIUM MENGGUNAKAN NATRIUM SULFIDA DARI BELERANG ALAM Wisni Rona Anami; Mamay Maslahat; Dian Arrisujaya
JURNAL SAINS NATURAL Vol. 10 No. 2 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

Precipitation of Laboratory Wastewater Heavy Metals by Natural Sulphur Sodium SulfideÂ Sodium sulfide (Na2S) from natural sulfur has been used for heavy metal precipitation from laboratory wastewater. Heavy metals in laboratory wastewater include mercury (Hg), lead (Pb), chromium (Cr) and zinc (Zn). Initial laboratory wastewater testing was performed by measuring the initial pH and the concentration of heavy metals in the wastewater prior to precipitation using the atomic absorption spectrophotometer. Sulphide precipitation phase consists of variations in the concentration of NaOH, time, temperature, and volume of dissolving Na2S. Parameters for the efficiency of Hg, Pb, Zn and Cr heavy metal precipitation were the initial pH, concentration and rate of stirring of the solution. Results showed that the optimum precipitation efficiency for Zn is achieved by using 10 % Na2S solution with an efficiency of 97.93 %. The most significant reduction in Cr and Hg was the use of 20 % Na2S solution with a precipitation efficiency of 99.24 % and 99.76 % respectively. The optimal efficiency for Pb with a 30 % Na2S solution was 99.68 %. Natural sulfur can reduce the levels of heavy metals in laboratory wastewater by precipitation.Key words: Natural sulfur, Heavy metals, Precipitation, Sodium sulfide,Â ABSTRAKPresipitasi logam berat dari limbah cair laboratorium telah dilakukan dengan menggunakan natrium sulfida (Na2S) dari belerang alam. Logam berat yang terkandung dalam limbah cair laboratorium diantaranya adalah merkuri (Hg), timbal (Pb), kromium (Cr) dan seng (Zn). Pengujian awal limbah laboratorium dilakukan dengan mengukur pH awal dan kadarÂ logamÂ beratÂ yangÂ terdapatÂ dalamÂ limbah sebelum presipitasi menggunakan pH meter dan spektrofotometer serapan atom. Tahapan presipitasi limbah oleh sulfida meliputi pembuatan variasi konsentrasi NaOH, waktu, suhu, dan volume pelarutan Na2S. Parameter efisiensi presipitasi logam Hg, Pb, Zn, dan Cr meliputi pH, Konsentrasi dan Kecepatan pengadukan. HasilÂ penelitianÂ menunjukkanÂ efisiensi pengendapan optimal untuk logam Zn terdapat pada penggunaan larutan Na2S 10% dengan efisiensi 97,93%. Larutan Na2S 20% paling banyak menurunkan logam Cr dan Hg dengan efisiensi masing-masing sebesar 99,24% dan99,76%. Efisiensi optimal untuk logam Pb berada pada penggunaan larutan Na2S 30% dengan efisiensi 99,68%. BelerangÂ alamÂ mampuÂ menurunkan kadar logam berat dalam limbah cair laboratorium dengan metode presipitasi.Kata kunci: Belerang alam, Logam berat, Presipitasi, Natrium sulfida

Activation of oil palm empty bunches with hydrochloride acid & phosphoric acid and characterization based SNI No. 06-3730-1995 Irna Diah Mumpuni; Mamay Maslahat; Devy Susanty
JURNAL SAINS NATURAL Vol. 11 No. 1 (2021): Sains Natural
Publisher : Universitas Nusa Bangsa

Activated carbon is a solid product resulting from carbonization and activation of lignocellulosic biomass by several methods and activators. Each activator can produce different characteristics of activated carbon. The activated carbon of Oil Palm Empty Fruit Bunches (OPEFB) is processed from Empty Fruit Bunches (EFB) waste, which is quite abundant in Indonesia. The purpose of this study was to determine the characteristics of OPEFB carbon that had been chemically activated using hydrochloric acid (HCl) and phosphoric acid (H3PO4) based on the Indonesian National Standard (SNI) No. 06 - 3730 - 1995. The research method consisted of the process of carbonization of OPEFB using a pyrolysis device at 400oC for 6 hours; activation of carbon with activator HCl and H3PO4 at various activator concentrations; characterization of activated carbon on the parameters of moisture content, ash content, absorption of iodine, and absorption of methylene blue. The results showed that the 0.5000 M HCl was the best activator that produced the quality of OPEFB activated carbon according to SNI 06 - 3730 - 1995 on parameters of moisture content, ash content and absorption of iodine.Keywords:Â Activated Carbon,Â Iodine Absorption,Â Oil Palm Empty Fruit BunchesABSTRAKAktivasi karbon tandan kosong kelapa sawit dengan asam klorida dan asam fosfat serta uji karakterisasi berdasarkan SNI No. 06â€“3730â€“1995Karbon aktif merupakan produk padatan yang dihasilkan dari karbonisasi dan aktivasi biomassa lignoselulosa dengan beberapa metode dan aktivator. Masing-masing aktivator dapat menghasilkan karakteristik karbon aktif yang berbeda. Karbon aktif Tandan Kosong Kelapa Sawit (TKKS) diolah dari limbah TKKS yang keberadaannya cukup melimpah di Indonesia. Tujuan penelitian ini adalah mengetahui karakteristik karbon TKKS yang telah diaktivasi secara kimia menggunakan aktivator asam klorida (HCl) dan asam fosfat (H3PO4) berdasarkan Standar Nasional IndonesiaÂ (SNI) No.Â 06 â€“ 3730 â€“ 1995. Metode penelitian terdiri atas proses karbonisasi TKKS menggunakan alat pirolisis pada suhu 400 â„ƒ selama 6 jam; aktivasi karbon dengan aktivator HCl dan H3PO4 pada berbagai konsentrasi aktivator; serta karakterisasi karbon aktif pada parameter kadar air dan abu, daya jerap terhadap iod serta daya jerap terhadap biru metilen. Hasil penelitian menunjukkan bahwa HCl 0,5 M merupakan aktivator terbaik dan karbon aktif yang dihasilkan memiliki karakteristik yang sesuai dengan SNI 06 â€“ 3730 â€“ 1995 pada parameter kadar air dan abu serta daya jerap terhadap iod.Kata kunci: Daya Jerap Iod, Karbon Aktif, Tandan Kosong Kelapa Sawit

INSIDENSI SERANGAN HAMA PENGGEREK BATANG PADA PERSEMAIAN KALIANDRA DI PT.USAHA TANI LESTARI SUMBA BARAT NTT. Wida Darwiati Jusuf; Mira Yulianti
JURNAL SAINS NATURAL Vol. 10 No. 1 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

Stem borers at Kaliandra Nursery In PT Usaha Tani Lestari, Sumba Barat NTT. Â Â Â Pest attack is the major problem in the cultivation of energy-producing wood plants, one of which is a stem borer that attacks Kaliandra (Calliandra callothyrsus) plant. The information regarding the level of stem borer attack is needed as a material consideration in the management of the energy-producing timber plant. The purpose of this study is to assess the incidence, calculate the percentage and intensity of attacks and identify the stem borer. This research was conducted at Kaliandra Nursery PT. Sustainable Farming in West Sumba, NTT. The results showed that the identification of stem borer pests of the Xyleborus sp (Scolytidae: Coleoptera) species. 7-month-old seedlings have been attacked with an average stem diameter of 1.21 cm and a stem height of 63.7 cm. The holes produced by the pest Xyleborus sp by 2 mm with the highest number of hole holes 30 points per seed. the distance of the first drill hole from the base is 3.01 cm and the final distance of the drill hole is 56.96 cm. The results of the percentage of attacks reached 90% with the category of severe attacks, the incidence of stem borer pests are also driven by very extreme weather factors/heat.Keywords: Stem Borer, Kaliandra, Percentage, And Intensity of The AttackABSTRAKÂ Â Â Serangan hama merupakan masalah utama yang dihadapi dalam budidaya tanaman penghasil kayu energi, salah satunya adalah hama penggerek batang yang banyak menyerang tanaman kaliandra (Calliandra callothyrsus). Informasi mengenai tingkat serangan hama penggerek batang diperlukan sebagai bahan pertimbangan dalam pengelolaan tanaman penghasil kayu energi tersebut. Tujuan penelitian ini adalah mengkaji insidensi, menghitung persentase dan intensitas serangan serta mengidentifikasi hama penggerek batang tersebut. Penelitian ini dilaksanakan di persemaian kaliandra PT. Usaha Tani Lestari Sumba Barat, NTT. Hasil penelitian menunjukkan bahwa identifikasi hama penggerek batang adalah dari jenis Xyleborus sp (Scolytidae : Coleoptera). Bibit umur 7 bulan sudah terserang dengan rata-rata diameter batang 1,21 cm dan tinggi batang 63,7 cm. Lubang gerek yang dihasilkan hama Xyleborus sp sebesar 2 mm dengan jumlah lubang gerek terbanyak 30 titik per bibit. Jarak lubang gerek pertama dari pangkal bawah 3,01 cm dan jarak terakhir lubang gerek sepanjang 56,96 cm. Hasil persentase serangan mencapai 90% dengan kategori serangan yang berat, insidensi hama penggerek batang tersebut juga dipacu oleh faktor cuaca yang sangat ekstrem /panas.Kata Kunci : Hama penggerek batang, kaliandra, persentase, dan intensitas serangan

KARAKTERISASI DAN PROPORSI ABU TERBANG (FLY ASH) DALAM PEMBUATAN PCC (PORTLAND COMPOSITE CEMENT) Nurlela Nurlela; Finda Pratiwi Istomo
JURNAL SAINS NATURAL Vol. 10 No. 2 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

Batubara digunakan sebagai bahan bakar untuk membentuk klinker yang merupakan bahan dasar semen. Residu yang dihasilkan yaitu abu terbang/fly ash yang dapat mencemari udara. Fly ash bersifat pozzolan yang dapat bereaksi dengan kapur dan bersifat mengikat, sehingga dapat digunakan sebagai bahan tambahan dalam pembuatan semen sebagai pengganti material yang selama ini digunakan yaitu trass. Oleh karena itu, perlu dilakukan penelitian terhadap proporsi fly ash agar mendapat kualitas semen yang memenuhi persyaratan SNI 0302-2014. Metode penelitian yang dilakukan adalah karakterisasi oksida dalam fly ash menggunakan XRF, optimasi penggilingan sampel fly ash, pencampuran blanko semen dengan sampel fly ash, dan pengujian kimia dan fisika. Pengujian kimia meliputi uji kapur bebas, uji bagian tak larut, uji hilang pijar dan uji XRF. Sedangkan untuk pengujian fisika meliputi uji kehalusan, uji residu dengan ayakan 45 Î¼m, uji kandungan air, uji pemuaian, uji nilai konsistensi, uji setting time, dan uji kuat tekan. Komposisi fly ash yang ditambahkan pada blanko semen adalah 0%, 10%, 20%, 30%, dan 40%. Hasil pengujian kimia dan fisika didapatkan semakin banyak penambahan fly ash maka akan mempengaruhi kualitas dari semen yang dihasilkan. Hasil pengujian kimia untuk uji kapur bebas mengalami penurunan, sedangkan untuk uji bagian tak larut dan uji hilang pijar mengalami kenaikan. Pengujian fisika meliputi uji kehalusan, uji kandungan udara, uji pemuaian, uji setting time, mengalami kenaikan sedangkan uji residu mengalami penurunan. Hal ini disebabkan semakin halus luas permukaan semen maka nilai residu yang dihasilkan semakin menurun. Berdasarkan hasil penelitian dapat disimpulkan bahwa penambahan fly ash 10%-30% memenuhi persyaratan SNI 0302-2014.

Identification of molecular bacterial isolate endofit bacteria Kasturi mango (Mangifera casturi Kosterm) leaves and analysis of antibacterial activity Usep Suhendar; Siti Mahyuni; Sogandi Sogandi
JURNAL SAINS NATURAL Vol. 11 No. 1 (2021): Sains Natural
Publisher : Universitas Nusa Bangsa

The increase in infectious diseases caused by pathogenic bacteria impacts the increase in the incidence of pathogenic bacteria to antibiotics. This study aimed to find candidates for the endophytic bacterial isolates of kasturi mango, which have antibacterial potential. After being tested against the pathogenic bacteria, Bacterial isolates showed potential activity using the disc diffusion method. The observations of five endophytic bacterial isolates from the leaves of Kasturi mango, namely L1, L2, L3, L4, and L5, showed that L2 was the most potential compared to other isolates. The formation of a clear zone indicates the inhibitory activity. Molecular identification was carried out by PCR amplification on the 16S rRNA gene. Furthermore, the L2 isolate was identified as Enterobacter cloacae with a 99% sequence similarity. Subsequent tests on several bacteria, including S. mutans ATCC 31987, S. aureus ATCC 25323, E. coli ATCC 25922 and Shigella dysenteriae ATCC 13313. All isolates showed an inhibition zone in the five bacteria.Keywords:Â Endophyte,Â Kasturi Mango,Â AntibacterialABSTRAKIdentifikasi molekuler isolat bakteri endofit daun mangga Kasturi (Mangifera casturi Kosterm) dan analisis aktivitas antibakteriMeningkatnya angka kejadian penyakit menular yang diakibatkan oleh bakteri patogen berdampak pada meningkatknya kemampuan resistensi bakteri patogen terhadap antibiotik. Penelitian ini bertujuan untuk mendapatkan kandidat isolat bakteri endofit daun mangga kasturi yang memiliki aktivitas sebagai antibakteri. Isolat bakteri yang telah diujikan terhadap bakteri patogen Propionibacterium acnes menunjukkan aktivitas potensial dengan menggunakan metode difusi cakram. Hasil pengamatan dari lima isolat bakteri endofit dari daun mangga kasturi yaitu L1, L2, L3, L4, dan L5 menunjukan L2 yang paling potensial dibandingkan isolat yang lain. Aktivitas penghambatan ditunjukkan dengan terbentuknya zona bening. Identifikasi molekuler dilakukan dengan amplifikasi PCR pada gen 16S rRNA. Selanjutnya, isolat L2 diidentifikasi sebagai Enterobacter cloacae dengan kemiripan urutan 99%.Â Pengujian berikutnya dilakukan terhadap beberapa bakteri diantaranya bakteri S. mutans ATCC 31987, S. aureus ATCC 25323, E. coli ATCC 25922 dan S. dysenteriae ATCC 13313. Semua isolat menujukkan adanya zona hambat pada kelima bakteri tersebut.Kata Kunci: Endofit, Mangga Kasturi, Antibakteri

KARAKTERISTIK MEMBRAN KOMPOSIT BERBASIS KITOSAN/PVA TERMODIFIKASI LEMPUNG DARI BABAKAN MADANG BOGOR Thria Kharisma; Nina Ariesta; Dian Arrisujaya
JURNAL SAINS NATURAL Vol. 10 No. 1 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

The use of natural polymers as membranes of DMFC from chitosan was developed because it is more environmentally friendly and has high thermal stability, but the proton conductivity is low. The Clay from Babakan Madang, which contained of SiO2 50% was expected to increase proton conductivity and improve the characteristics of the polymer membrane. Chitosan / PVA based membrane synthesis was carried out by adding clay weight variations of 0.3, 0.6 and 0.9 g. The spectra of membranes investigated by FT-IR Â confirmed the presence of functional groups from chitosan/PVA/clay. Morphological analysis using SEM showed that there were granules of clay dispersed on the membrane. The determination of membran conductivity using EIS Â showed the highest proton conductivity value was a membrane with the addition of 0.6 g clay, it was 6.96 x 10-7 S / cm. The membrane water swelling produced on the three membranes tended to be high, with the smallest value of 56.69% on the membrane with the addition of 0.9 grams of clay. The methanol uptake data found that the conductivity of membrane with the addition of 0.6 grams of clay was 346.11%.

FERMENTASI BIJI KOPI ARABIKA (Coffea arabica L.) DENGAN PENAMBAHAN BAKTERI ASAM LAKTAT (Lactobacillus sp) Zakia Arachmah Siregar; Devy Susanty; RTM Suthamihardja
JURNAL SAINS NATURAL Vol. 10 No. 2 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

FERMENTATION OF ARABIC COFFEE SEEDS (Coffea arabica L.) WITH THE ADDITION OF LACTO ACID BACTERIA (Lactobacillus sp)Coffee bean fermentation is one of a series of processes for making ground coffee that can affect coffee quality. In this study the fermentation of Arabica coffee beans was carried out using lactic acid bacteria (Lactobaciilus sp) in the form of a starter. The analysis was carried out on five samples, namely brand a coffee samples (sample A), coffee samples processed without bacteria (sample B), coffee samples processed with the addition of bacteria and substrate as many as 10:90 (sample C), 20:80 (sample D ), 30:70 (sample E). The five coffee samples were analyzed for water content, pH, extract content, ash content, and caffeine content. Identification of caffeine was carried out by the UV-Vis spectrophotometric method at a wavelength of 275.0397 nm. The highest caffeine content was in sample C at 0.95% and the lowest caffeine content was in sample E 0.71%. The highest extract content was found in sample E at 27.72% and the lowest content in C at 24.60%. The highest water content results were found in sample C of 4.56% and the lowest in sample E of 4.26%. The highest ash content was found in coffee C samples at 4.98% and the lowest ash content in E at 4.43%. The highest value of the degree of acidity (pH) was found in sample B (6.19) and the lowest in sample A (5.41). The results showed that the Arabica ground coffee met the SNI 01-3542-2004 requirements on parameters of moisture content, extract content, ash content and caffeine content.Â Keywords: Arabica coffee, fermentation, Lactobacillus sp, CaffeineABSTRAKFermentasi biji kopi merupakan salah satu rangkaian proses pengolahan pembuatan kopi bubuk yang dapat mempengaruhi kualitas kopi. Pada penelitian ini fermentasi biji kopi Arabica dilakukan menggunakan bakteriÂ asam laktat (Lactobaciilus sp) dalam bentuk starter. Analisis dilakukan terhadap lima sampelÂ yaitu sampel kopi merk a (sampel A), sampel kopi yang diproses tanpa bakteri (sampel B) , sampel kopi yang diproses dengan penambahan bakteri dan substrat sebanyak Â 10:90 (sampel C), 20:80 (sampel D), 30:70 (sampel E). Kelima sampel kopi tersebut dianalisis kadar air, pH, kadar sari, kadar abu, dan kadar kafein. Identifikasi kafein dilakukan dengan metode spektrofotometri UV-Vis pada panjang gelombang 275,0397 nm. Kadar kafein tertinggi terdapat pada sampel C sebesar 0,95 % danÂ kadar kafein terendah pada sampel E 0,71%. Kadar sari tertinggi terdapat pada sampel E sebesar 27,72%Â dan kadar sari terendah pada C sebesar 24,60%. Hasil kadar air tertinggi terdapat pada sampel C sebesar 4,56% dan kadar terendah pada sampel E sebesarÂ 4,26%. Kadar abu tertinggi terdapat pada sampel kopi C sebesar 4,98% dan kadar abu terendah pada E sebesar 4,43%. Nilai derajat keasaman (pH) tertinggi didapatkan pada sampel B yaitu sebesar 6,19 dan terendah pada sampel A yaitu 5,41. Hasil uji menunjukkan bahwa kopi bubuk arabika dengan proses fermentasi enggunakan bakteri asam laktat memenuhi syarat SNI 01-3542-2004Â pada parameter kadar air, kadar sari, kadar abu dan kadar kafein.Kata kunci: Kopi arabika, fermentasi, Lactobacillus sp, Kafein

STUDY OF GELATIN FROM DUCK BONE AS AN ALTERNATIVE SOURCES OF HALAL GELATIN Muhammad Habbib Khirzin
JURNAL SAINS NATURAL Vol. 10 No. 1 (2020): Sains Natural
Publisher : Universitas Nusa Bangsa

Gelatin is an intermediate ingredient which is oftenly used in many field such as food, pharmacy, and cosmetics. It is usually extracted from pig and cow. Halal issue of gelatin sources and the outbreaks of mad cow diseases encouraged people to find an alternative sources of gelatin. One of the alternative sources of gelatin was duck bone. The aim of this research was to describe physicochemical properties of duck bone gelatin which is extracted by using acid extraction method as an alternative sources of halal gelatin. The extraction of duck bone gelatin used 5% concentration of HCl (hydrochloric acid). The extraction process consisted of four steps, they were degreassing, defating, demineralization, and acid extraction. The result showed that gelatin which was extracted from duck bone had these several characteristic: yield of 6.24%, pH 4.0, water content of 13.43%, ash content of 13.42%, protein content of 65.43%, and whiteness degree of 30.35%. Generally, gelatin which was extracted from duck bone had similar characteristic with commercial gelatin and SNI standard. Further researcher had been suggested to reoptimized extraction method in order to reduce ash content.

Effectiveness of caporite to reduce concentration of iron and mangan in Ciliwung river water as raw water PDAM Nadhila Aulia Dwiputri; Mia Azizah; Nurlela Nurlela
JURNAL SAINS NATURAL Vol. 11 No. 1 (2021): Sains Natural
Publisher : Universitas Nusa Bangsa

The water of the Ciliwung river used as raw water for PDAM Depok contains iron and manganese, which levels were quite high and exceeded the quality standard. The purposes of the research are to determine the effectiveness of caporite to reduce levels of iron and manganese to reach levels that meet the standards of Government Regulation Number 82 of 2001. The sample used in this study was the water of the Ciliwung river used as a source of raw water for PDAM Depok with two different water treatment plant (WTP) locations, location 1 in Legong WTP and location 2 in Citayam WTP. Raw water was taken using a submersible water pump located at the bottom of the Ciliwung river. The analytical method used as a reference for determining iron levels was based on the FerroZine Rapid Liquid Method 1970, and for manganese levels was based on 1- (2-Pyridylazo) -2-Naphthol PAN Method 1977, both methods using the Spectrophotometric method. The results showed that iron and manganese levels were quite high, exceeding the standards of Government Regulation No.82 of 2001 with a maximum standard of iron content is 0.3 mg/L, and a maximum standard of manganese level is 0.1 mg/L. After adding a certain dose of chlorine to Ciliwung river water in the Legong and Citayam WTPs, it was found that chlorine effectively reduced Fe and Mn levels because it was able to reduce levels up to 80% and meet the quality standards.Keywords:Â Caporite,Â Iron,Â Manganese,Â Ciliwung River,Â RegulationABSTRAKEfektivitas kaporit untuk menurunkan kadar besi dan mangan dalam air sungai Ciliwung sebagai air baku PDAMAir sungai Ciliwung yang digunakan sebagai air baku PDAM Depok terdapat zat besi dan mangan dengan kadarnya cukup tinggi serta melebihi ambang baku mutu. Tujuan penelitian ini untuk mengetahui efektivitas kaporit dalam menurunkan kadar besi dan mangan sehingga memenuhi standar baku mutu Peraturan Pemerintah Nomor 82 Tahun 2001 untuk kelas 1. Sampel air yang digunakan dalam penelitian ini diambil dari 2 titik lokasi Instalasi Pengolahan Air (IPA) yang berbeda, yaituÂ dari IPA Legong danÂ IPA Citayam. Sampel air baku diambil dengan menggunakan pompa air submersible (pompa celup) yang berada di dasar sungai Ciliwung. Penelitian dilakukan dengan eksperimen jar test di laboratorium. Metode analisis untuk menentukan kadar besiÂ mengacu pada FerroZine Rapid Liquid Method tahun 1970 dan mangan berdasarkan 1-(2-Pyridylazo)-2-Napthol PAN Method tahun 1977 dengan menggunakan metode Spektrofotometri. Hasil penelitian menunjukan kadar besi dan mangan yang cukup tinggi hingga melebihi standar yang telah ditetapkan dalam PP No.82 Tahun 2001 dengan kadar Fe maksimal 0,3 mg/L dan kadar Mn maksimal 0,1 mg/L. Setelah dilakukan penambahan bahan kimia kaporit ke dalam sampel air sungai CiliwungÂ dariÂ IPA Legong dan Citayam, dengan dosis 10 mg/L untuk penurunan Fe dan 30 mg/L untuk penurunan Mn dapat efektif menurunkan konsentrasi Fe dan MnÂ hingga 80%, dan memenuhiÂ standar baku mutu yang digunakan.Kata Kunci: Kaporit, Besi, Mangan, Sungai Ciliwung, Baku Mutu

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Location
Kota bogor,

Jawa barat

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dian Arrisujaya

Contact Email arrisujaya@unb.ac.id

Phone +622517592051

Journal Mail Official jsainsnatural.unb@gmail.com

Editorial Address Universitas Nusa Bangsa Kampus Universitas Nusa Bangsa Jl. KH. Sholeh Iskandar Km. 4, Cimanggu, Tanah Sareal Bogor 16166

Location Kota bogor, Jawa barat INDONESIA

Abstract

Abstract

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Abstract

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Contact Name
Dian Arrisujaya

Contact Email
arrisujaya@unb.ac.id

Phone
+622517592051

Journal Mail Official
jsainsnatural.unb@gmail.com

Editorial Address
Universitas Nusa Bangsa Kampus Universitas Nusa Bangsa Jl. KH. Sholeh Iskandar Km. 4, Cimanggu, Tanah Sareal Bogor 16166

Location
Kota bogor,

Jawa barat

INDONESIA