Jurnal Teknologi Lingkungan Universitas Trisakti
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    TINGKAT KEASAMAN (pH) DAN OKSIGEN TERLARUT SEBAGAI INDIKATOR KUALITAS PERAIRAN SEKITAR MUARA SUNGAI CISADANE

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    Acidity and dissolved oxygen as indicator of water quality for Cisadane estuary. A lot of waste which flows into the rivermouth of Cisadane River were considered to influence to degree of acidity (pH) value and oxygen concentration of that waters. The change of those values will be indicator of waters quality. Based on that condition, the research at the rivermouth of Cisadane and at vicinity was carried out in 2003 – 2005 and two different monsoon. As long as those periods the waters quality were increased, the degree of acidity was increased between 0.88% - 3.49%, whereas oxygen concentration between 12.55% - 39.15%. The influence of river flows with a lot of organic matter were caused the lower of oxygen concentration and pH value. The oxygen concentration at the Cisadane River just 1.89 ml/l and pH 6.8. The lowest of those parameters were equal to the highest of nitrate concentration (29.53 μgA/l). Nevertheless those condition were better after to river outside

    PENGARUH pH PADA PROSES KOAGULASI DENGAN KOAGULAN ALUMINUM SULFAT DAN FERRI KLORIDA

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    Influence of pH in the Coagulation Process Using Aluminum Sulphate and Ferric Chloride. Coagulation occurs by interaction of coagulant with the contaminant such as colloidal particles. Coagulation process influences by several factors i.e. pH, dosages, and turbidity. This research studies the influence of pH and dosages in the coagulation and flocculation process using aluminum sulphate (Al2(SO4)3..14,3H2O ) and ferric chloride (FeCl3.6H2O). Artificial suspensions using kaolin represents high turbidity suspension (124 NTU) and medium turbidity suspensions (51 NTU) are prepared in this research. Result suggests pH and dosages has significant impact for aluminum sulphate, whereas ferric chloride provides a wider range of pH than aluminum sulphate

    SIMULASI MODEL TRANSPOR SEDIMEN TERSUSPENSI UNTUK MENDUKUNG PERENCANAAN PELABUHAN TELUK BAYUR, SUMATERA BARAT

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    Simulation model of suspended sediment to support development planning for Teluk Bayur port. The survey was conducted at Teluk Bayur sea waters during September 2008, where this area is development planning for Teluk bayur port. Objective of research is known suspension sediment transport at dredging area and dumping site for development planning of Teluk Bayur port at Teluk Bayur, Province of West Sumetera. Grab sampler was used to carry sediment bottom and Nansen bottle was used collect water sample for total suspended sediment (TSS). Analysis of hydrodynamic pattern used modeling system by software SMS 8.1 (Surface Water Modeling System) with SED2D module. The result had shown that TSS is above sea water standard for marine organism, between 6,0 – 10,0 mg/L. Therefore bottom sediment was dominated by sand, and then silt and gravel. The result of modeling shown that sediment transport depends of monsoon current pattern, where sediment transport to east-northeast on west monsoon and to northwest-north on east monsoon. Dredging and dumping site activity due to decreasing water quality at construction time

    HUBUNGAN TINGKAT KEBISINGAN PESAWAT UDARA TERHADAP KESEHATAN PEKERJA DI SEKITAR LANDAS PACU 1 DAN 2 BANDAR UDARA INTERNASIONAL SOEKARNO–HATTA, BANTEN

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    The Relations between Airplane's Noise Level and Employees Health in Runways 1 and 2 Soekarno-Hatta International Airport, Banten. Soekarno-Hatta International Airport in Tangerang, Indonesia has flew over 70.000 passengers every day nowadays, it has 2 runways with specification number 07R/25L, length 3600 m (1st runway), 3660 m (2nd runway), width 60 m and can be used for Boeing 747 landing. Noise level measurement at Soekarno-Hatta International Airport conducted at 4 measurement points around 1st and 2nd runway using Sound Level Meter at 300 m from runway. 120 questionnaires were given to the employees around runway to observe their health problem. The result of noise level measurement was due from 72,15 dB(A) to 87,93 dB(A).As for Time Weighted Average (TWA) calculation was only conducted at point 1 to point 4, but point 1 and point 2 was not included at the calculation due to normal result at point 1 and 2 compared to the permitted threshold 85 dB(A) which ruled by Kep - 51/MEN/1999. As for point 3 and 4 the result shown that Time Weighted Average are 88,40 dB(A) and 88,52 dB(A) for 5,48 hours and 5,33 hours. The result shown that 41,67 % of employees at PKP-PK unit had hearing problem, as for office employees is 3,33 %. The result shown that Self Protection Device was the only significant relation due to employees’ hearing problem with 1,5 times larger hearing problem chance to the employees with more than 10 years work duration compared to the less than 10 years work duration employee. As for the official workers the risk was 4,1 times for the employees with more than 50 years old age compared to less than 50 years old age. Self Protection Device usage should be more effective with regular inspection by the occupational safety authorities and punishment to the indiscipline employee, and to place more barriers at the location which has direct impact to the employees, and also placing some acoustic noise absorber at PKP-PK building. Abstract in Bahasa Indonesia:Bandar Udara Internasional Soekarno-Hatta adalah bandar udara terbesar di Indonesia yang saat ini menerbangkan 70.000 orang tiap harinya, spesifikasi panjang landasan pacu (runway) 1 dengan nomor 07R/25L sebesar 3600 m dan runway 2 dengan nomor 07L/25R sebesar 3660 m dan lebar 60 m. Pengukuran bising dilakukan di 4 titik di sekitar wilayah runway 1 dan 2 menggunakan alat Sound Level Meter (SLM) pada jarak 300 m dari runway. Untuk mengetahui keluhan yang dialami oleh pekerja di area runway dilakukan penyebaran kuesioner terhadap pekerja sebanyak 120 buah, 20 eksemplar pada tiap unit PKP-PK, serta 60 pada area perkantoran. Hasil pengukuran antara 72,15 dB(A) sampai 87,93 dB(A). Perhitungan tingkat pemaparan kebisingan (TWA) dilakukan pada titik 1 hingga 4, adapun titik 1 dan 2 tidak dilanjutkan karena masih dibawah ambang batas yaitu 85 dB(A) oleh Kep- 51/MEN/1999. Perhitungan TWA di titik 3 dan 4 menunjukkan waktu pemaparan yang diizinkan sebesar 5,48 jam dan 5,33 jam, pemaparan sebesar 88,40 dB(A) dan 88,52 dB(A). Dari penyebaran kuesioner didapat hasil sebanyak 41,67 % pekerja di unit PKP-PK mengalami gangguan pendengaran, dan di area perkantoran sebanyak 3,33 %. Berdasarkan analisis statistik diketahui bahwa kepatuhan terhadap penggunaan alat pelindung diri (APD) memiliki hubungan yang bermakna terhadap gangguan pendengaran pekerja di unit PKP-PK dengan masa kerja >10 tahun memiliki resiko 1,5 kali mengalami gangguan pendengaran dibanding masa kerja 50 tahun memiliki resiko 4,1 kali lebih besar mengalami gangguan pendengaran dibanding pekerja dengan umur < 50 tahun. Efektifitas penggunaan APD sebaiknya ditingkatkan dengan pemeriksaan berkala oleh pihak K3 PT. Angkasa Pura II serta pemberian sanksi bagi yang melanggar, begitu pula dengan pemberian barrier pada daerah yang berhubungan langsung dengan lokasi kerja serta pemberian peredam akustik pada bangunan PKP-PK

    PEMANFAATAN LIMBAH KULIT UDANG MENJADI EDIBLE COATING UNTUK MENGURANGI PENCEMARAN LINGKUNGAN

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    Utilize shrimp waste to be edible coating to reduce environmental pollution. Devisal obtained from Fisheries sector come from shrimp export were 125.596 ton at 2007 [3]. Shrimp produce 65%-85% waste. Researches to utilize shrimp waste to be chitosan as “edible coating” were done. Chitosan Processing were drying, destroying, demineralization, neutralization, deproteination, neutralization, deasetilization, neutralization and drying. Shrimp shell produce15% chitosan with water content 5,56%, ash content 0,86% and deasetilalization degree 90%. Chitosan were applied on salted boiled fish with concentration 0% and 1,2%. The result show organoleptic value of Salted boiled fish without and with chitosan (0% and 0,25%) were 7,93 and 7,98 and TPC value were 2,4 x 103 and 4,5 x 103. This research show chitosan from shrimp shell could be “edible coating” to pursue microbial growth and to increase self life fisheries product.   Abstract in Bahasa Indonesia:  Devisa yang diperoleh dari sektor perikanan 34% berasal dari ekspor udang sebesar 125.596 ton pada tahun 2007 [3]. Produksi udang menghasilkan limbah + 65%-85% dari berat udang. Penelitian untuk memanfaatkan limbah kulit udang menjadi chitosan sebagai “Edible Coating” telah dilakukan melalui proses : pengeringan, penghancuran, demineralisasai, netralisasi, deproteinas, netralisasi, deasetilasi, netralisasi dan pengeringan. Rendemen chitosan yang dihasilkan 15 % dengan kadar air 5,56%; kadar abu 0,86%; derajat deasetilasi 90%. Chitosan diaplikasikan pada ikan pindang digunakan konsentrasi : 0% dan 0,25 %. Dari hasil “ Edible Coating” pada ikan pindang menunjukkan nilai rata-rata organoleptik dengan dan tanpa chitosan adalah : 7,93 dan 7,98 dan nilai TPC masing-masing 2,4 x 103 dan 4,5 x 103 menunjukkan perbedaan yang sangat nyata pada taraf uji 1%. Dari hasil Penelitian menunjukkan chitosan dari kulit udang bisa menjadi “edible coating” untuk menghambat pertumbuhan bakteri dan menambah daya awet produk perikanan

    KUALITAS AIR TANAH DI KECAMATAN TEBET JAKARTA SELATAN DITINJAU DARI POLA SEBARAN Escherichia coli

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    Distribution pattern of Escherichia coli to indicate the ground water quality in Tebet District South Jakarta. Most citizen in Tebet District use ground water as one alternative to daily pure water need. A report of BPLHD DKI (2008) indicated that 80% of ground water sample from 75 wells in 75 sub districts in Jakarta were Escherichia coli (E. coli) bacteries polluted from water septic tank. One of reasons that ground water was polluted is due to the highly rapid growth citizen and the ever-limited area. Physic parameter is temperature while the chemical parameters are pH and Dissolved Oxygen, and biologic parameter is E. coli bacteries. Checking of E.coli contain in ground water in Tebet sub district used Most Probable Number (MPN) method from SNI 01-2332-1991. Report of this research showed that ground water in Tebet Sub district have range total of bactery E. coli from 3 MPN/100 ml to 160 MPN/100ml. As a result of correlation test we get relation between total amount of E.coli bacteries against well depth and distance of septic tank. The more shallow depth of well and closer distance of septic tank and pure water source, the more E.coli bacteries consists in ground water. Distributing pattern of E. coli bacteries can be explained with mathematic model with helper of program surfer. Distributing pattern of E. coli in Kebon Baru, Bukit Duri and Manggarai and West Tebet and go to left bottom of spread of E.coli become increase.   Abstract in Bahasa Indonesia:  Sebagian besar penduduk di Kecamatan Tebet memanfaatkan air tanah sebagai salah satu alternatif dalam pemenuhan kebutuhan air bersihnya. Berdasarkan laporan dari BPLHD DKI (2008) bahwa 80 persen sampel air tanah dari 75 sumur di 75 kelurahan di Jakarta tercemar bakteri Escherichia coli (E. coli) yang berasal dari rembesan tangki septik. Salah satu faktor penyebab pencemaran air tanah adalah tingginya kepadatan penduduk dan keterbatasan lahan sehingga fasilitas sanitasi tidak terencana dan terbangun dengan baik, seperti : jarak tangki septik dan saluran drainase yang terlalu dekat dengan sumur air bersih. Daerah Padat penduduk dan tingginya penggunaan air tanah di Kecamatan Tebet menjadi sasaran utama dalam penelitian ini. Parameter fisik yang diukur, yaitu suhu, parameter kimia, yaitu pH dan DO dan parameter biologi, yaitu bakteri E. coli. Pemeriksaan kandungan Bakteri E. coli pada air tanah di Kecamatan Tebet menggunakan metode Most Probable Number (MPN) yang mengacu pada SNI 01-2332-1991. Hasil penelitian menunjukkan bahwa jumlah bakteri E. coli pada air tanah di Kecamatan Tebet berkisar antara 3 MPN/100 ml sampai 160 MPN/100 ml. Dari hasil uji korelasi diketahui bahwa jumlah bakteri E. coli pada air tanah dipengaruhi oleh kedalaman sumur dan jarak tangki septik terhadap sumur air tanah. Semakin rendah kedalaman sumur air tanah dan semakin dekat jarak tangki septik terhadap sumur air tanah maka semakin buruk kualitas air tanahnya dan jumlah bakteri E. coli yang terkandung di dalam air tanah pun semakin banyak. Pola persebaran bakteri E. coli dapat dijelaskan dengan menggunakan model matematis dengan bantuan program surfer. Pola persebaran bakteri E. coli di Kelurahan Kebon Baru, Bukit Duri dan Manggarai semakin ke arah kanan atas semakin tinggi, sedangkan untuk di Kelurahan Menteng Dalam dan Tebet Barat semakin ke arah kiri bawah sebaran bakteri E. coli semakin tinggi

    SUMBER PENCEMAR DAS CILIWUNG SEGMEN 2 SERTA UPAYA PENANGGULANGANNYA

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    Pollutant Resources in Ciliwung Watershed Segment 2 and its Solutions. Ciliwung River flows across provinces West Java and DKI Jakarta and has a very important role to the people who lives along side it. According to Ministry of Environment in 2006, Ciliwung River’s drainage basin is divided to 5 segments. This Ciliwung River’s drainage basin segment 2 is in the Bogor municipalities and involving 16 villages. This research is to identify the resources and the variety of the pollution itself, and make the mapping for the vile level of the drainage basin area that has a correlation to the water’s quality, as a result of the activities from the people who lives in the segment 2 and recommends the effort to overcome it. The sample taken in 12 chosen points based on the allotment from the length of the river and the easily reached. The laboratory analysis result the highest BOD level founded in in Kedung Badak Pedes (12nd point) with concentration reaches 34,7 mg/l, COD in Kebon Pedes (11th point) reaches 39,95 mg/l, N in Paledang (7th point) reaches 11,25 mg/l and Fosfat in Babakan Pasar (6th point) reaches 0,267 mg/l . The vile level, as a result the vilest area is in Babakan Pasar based on the highest number of diarchea, Kedung Halang for the clean water supply, and Babakan Pasar and Sempur for the environmental sanitation. The source of the pollution in the segment 2 is organic material from domestic waste dropped to the river. Therefore, it is recommended to repair and to improve sanitation and clear water supply.   Abstract in Bahasa Indonesia:  Sungai Ciliwung melintasi provinsi Jawa Barat serta DKI Jakarta dan memiliki fungsi penting bagi masyarakat sekitar DAS. Menurut Kementrian Lingkungan Hidup tahun 2006, DAS Ciliwung ini terbagi atas 5 segmen. Segmen 2 ini berada pada wilayah kotamadya Bogor, meliputi 16 kelurahan. Penelitian ini bertujuan untuk mengidentifikasi sumber dan jenis pencemar, membuat pemetaan tingkat kekumuhan di DAS berkaitan dengan sanitasi dan pengaruhnya terhadap kualitas sungai, yang diakibatkan kegiatan penduduk di DAS Ciliwung segmen 2 serta menentukan upaya penanganannya. Pengambilan sampel dilakukan di 12 titik dan menunjukkan bahwa konsentrasi BOD tertinggi yaitu di Kedung Badak (di titik 12) dengan konsentrasi 34,7 mg/l, konsentrasi COD pada Kebon Pedes (di titik 11) dengan konsentrasi 39,95 mg/l, N pada Paledang (di titik 7) dengan konsentrasi 11,25 mg/l, dan Fosfat pada Babakan Pasar (di titik 6) dengan konsentrasi 0,267 mg/l. Untuk tingkat kekumuhan, angka kesakitan diare di Babakan Pasar tergolong Sangat Kumuh, Kedung Halang untuk tingkat pelayanan air bersih, serta Babakan Pasar dan Sempur untuk kondisi sanitasi lingkungannya. Sumber pencemar utama sungai Ciliwung segmen 2 adalah bahan organik dari limbah domestik (cair dan padat). Untuk itu salah satu program yang direkomendasikan adalah program peningkatan sarana sanitasi dan pelayanan air bersih

    PENGOLAHAN AIR LIMBAH DOMESTIK DENGAN PROSES ELEKTROKOAGULASI MENGGUNAKAN ELEKTRODA ALUMINIUM Studi Kasus: Limbah Cair Gedung Syarif Thajeb (M), Universitas Trisakti

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    Domestic waste water treatment according to electrocoagulation process with allumunium electrode. The treatment condition is not working well, because of the smell bad, polluter, and the effluent have nondegradable material (COD and VSS) with high concentration, that is COD and VSS in the amount of 6727,27 mg/L and 2915 mg/L. This Research exactly do it processes domestic wastewater according to elektrocoagulation process on laboratorium scale. NaCl concentrated variation, is using 0 gr/L, 0,5 gr/L, 1 gr/L and detention time (td) variation, is using 45 second, 55 second, 60 second, with rapid mixing variation are 150 rpm, 180 rpm, 200 rpm. Rapid mixing in flocculation unit is 20 rpm and detention time of sedimentation is 2,26 – 3,02 hours. Research result get optimum operational condition with NaCl concentrated 0,5 gr/L, rapid mixing 180 rpm, and detention time 55 second, with % removal COD is 95,43%, BOD 95,05%, TSS 98,98%, Detergen content 90,08%, Oil and Grease 84,10%, TKN 65,30%, VSS 99,21%, Phosphate 62,88% and Turbidity 96,30%. If with NaCl concentrated 0 gr/L, rapid mixing 180 rpm, and detention time 55 second (as aqualizer), with % removal COD is 95,54%, BOD 95,93%, TSS 98,94%, Detergent 86,92%, Oil and Grease 31,80%, TKN 59,70%, VSS 99,38%, Phosphate 25,34% and Turbidity 98,70%.  Abstract in Bahasa Indonesia:  Kondisi IPAL Gedung Syarif Thajeb (M) saat ini kurang berjalan maksimal karena sering menimbulkan bau dan effluent memiliki kandungan materi nondegradable (COD dan VSS) yang masih menunjukkan konsentrasi yang tinggi, yaitu COD dan VSS sebesar 6727,27 mg/L dan 2915 mg/L. Sehingga dalam penelitian ini dilakukan pengolahan limbah dengan proses elektrokoagulasi secara kontinue dengan menggunakan reaktor elektrokoagulasi dalam skala laboratorium. Pada proses ini digunakan konsentrasi NaCl untuk memperbesar penguraian Al terlarut, variasi konsentrasi NaCl yang digunakan adalah 0 gr/L, 0,5 gr/L, 1 gr/L dan variasi waktu tinggal 45 detik, 55 detik, 60 detik serta variasi kecepatan pengadukan 150 rpm, 180 rpm, 200 rpm. Kecepatan pengadukan di unit flokulasi adalah 20 rpm dengan waktu pengendapan selama 2 jam. Pada hasil penelitian diperoleh kondisi operasional optimum dengan konsentrasi NaCl 0,5 gr/L, kecepatan pengadukan 180 rpm dan waktu tinggal 55 detik, dengan % penyisihan COD sebesar 95,43%, BOD 95,05%, TSS 98,98%, Detergen 90,08%, Minyak Lemak 84,10 %, TKN 65,30%, VSS 99,21%, Total Phosphat 62,88% dan Kekeruhan 96,30%. Sedangkan jika digunakan dengan konsentrasi NaCl 0 gr/L, kecepatan pengadukan 180 rpm dan waktu tinggal 55 detik (sebagai pembanding), maka % penyisihan COD sebesar 95,54%, BOD 95,93%, TSS 98,94%, Detergen 86,92%, Minyak Lemak 31,80%, TKN 59,70%, VSS 99,38%, Total Phosphat 25,34% dan Kekeruhan 98,70%

    ANALISIS HUBUNGAN ANTARA OZON DENGAN TEMPERATUR (STUDI KASUS DATA WATUKOSEK 1993-2005)

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    The analysis of correlation between ozone and temperature based on the Watukosek data of 1993-2005. The aim of this study was to use the data from insitu observation result (Watukosek profiles of ozone and temperature) and to know the altitude level which show highest correlation between ozone and temperature. The analysis was conducted by making the monthly profile of ozone and temperature within the 1993-2005 periods and searches the altitudes, which show highest correlation between ozone and temperature. The result showed that from Watukosek data  observation result in the period of 1993-2005 the altitude which showed highest correlation between ozone and temperature were 0.05m-3.0 km with coefficient correlation of 0.738-0.961 and altitude of 15-20 km with coefficient correlation of 0.941 -0.982.  Abstract in Bahasa Indonesia: Telah dilakukan analisis keterkaitan ozon dengan temperatur dari data Watukosek 1993-2005 dengan tujuan untuk melakukan pemanfaatan hasil penelitian (data profil ozon dan temperatur vertikal Watukosek), mencari level ketinggian yang mempunyai keterkaitan sangat besar antara ozon dengan temperatur. Penelitian dilakukan dengan membuat profil bulanan untuk ozon dan temperatur kemudian dicari level ketinggian yang mempunyai nilai korelasi profil ozon dan temperatur paling besar. Hasil penelitian menunjukkan bahwa korelasi antara ozon dan temperatur Watukosek dari data 1993-2005 korelasi yang besar sekali (koefisien korelasi lebih besar dari 0.9) diperoleh dari data pada ketinggian 15-20 km sedangkan untuk ketinggian 0.05 sampai dengan 3.0 km korelasinya antara 0.738-0.96

    PENYISIHAN Mn2+ DALAM AIR SUMUR DENGAN MEMANFAATKAN SABUT KELAPA

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    Analysis of Applying the Environment Management System ISO 14001 2004 Separation Mn2+ from water with coco fiber. Coco fiber is an organic waste which is produced from the coconut exfoliation at the market that can be used as absorbent to decrease the level of Mn2+ in sand water. It is known that sand water in Jakarta contains a highly level of Mn2+. Several methods already used to decrease the heavy metal are precipitative and also ion exchange method by synthetic resin. Both methods however are considered costy. There was therefore a need to find out a simple treatment with low cost material. Coco fiber which can be used to reduce heavy metal, especially Mn2+ in sand water was an alternative processing solution. This research was aimed at comparing the ability of coco fiber by treatment and non treatment in the way to separate heavy metal Mn2+ in water sand. The coco fiber by treatment uses hydrothermal method or heating (reflux) with of NaOH. From the result of mechanic shaking (shaker) found that the Mn2+ separation in the sand water by using absorbent of coco fiber non treatment was the most reducible than the treatment which was 99.56 % to 30 % level . From the column method, it was found out that the reducible maximum capacity of Mn2+ in sand water from coco fiber non treatment such as 0.327 mg/g and from coco fiber treatment was 0.202 mg/g. The absorption test in this column, known the optimal of maximum capacity, was coco fiber non treatment.   Abstract in Bahasa Indonesia: Analysis of Applying the Environment Management System ISO 14001 2004 Sabut kelapa merupakan limbah dari buah kelapa yang berasal dari pasar yang dapat dipakai sebagai adsorben dalam menurunkan Mn2+ dari air sumur. Seperti kita ketahui bahwa air sumur di Jakarta mengandung Mn2+ yang cukup tinggi. Berbagai macam metode untuk menurunkan kadar logam berat yang telah digunakan ialah metode pengendapan dan juga metode penukaran ion dengan resin sintetik. Kedua metode ini membutuhkan biaya yang cukup besar. Oleh sebab itu dicari cara perlakuan yang sederhana dan juga menggunakan bahan yang murah, maka dimanfaatkan sabut kelapa yang dapat menurunkan kadar logam berat terutama Mn2+ dalam air sumur sebagai pengolahan alternatif. Dalam penelitian ini dibandingkan kemampuan sabut kelapa yang diberi perlakuan dan sabut kelapa tanpa perlakuan dalam menyisihkan logam berat Mn2+ dari air sumur. Perlakuan sabut kelapa yang dimaksud yaitu dengan metode hidrotermal atau dengan cara pemanasan (refluks) dengan larutan NaOH. Dari hasil penelitian dengan metode pengguncangan mekanik (shaker) didapatkan bahwa penyisihan Mn2+ dari air sumur untuk sabut kelapa tanpa perlakuan jauh lebih besar daripada sabut kelapa perlakuan yaitu 99.56% terhadap 30%. Dan pada metode kolom didapatkan bahwa kapasitas maksimum menyerap Mn2+ dari air sumur untuk sabut kelapa tanpa perlakuan sebesar 0.327 mg/g dan sabut kelapa perlakuan sebesar 0.202 mg/g. Jadi dari uji adsorpsi pada kolom ini dapat diketahui bahwa kapasitas maksimum yang optimal adalah sabut kelapa tanpa perlakuan

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    Jurnal Teknologi Lingkungan Universitas Trisakti
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