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All Journal Jurnal Teknologi Lingkungan Universitas Trisakti Reaktor Jurnal Ilmu Lingkungan JURNAL TEKNOLOGI LINGKUNGAN Journal of Engineering and Technological Sciences JURNAL SELULOSA Molekul: Jurnal Ilmiah Kimia Jurnal Teknik Lingkungan Jurnal Teknik Kimia Indonesia Jurnal Multidisiplin Madani (MUDIMA)
Agus Jatnika Effendi
Jurusan Teknik Lingkungan, Institut Teknologi Bandung, Jln. Ganesha No. 10, Bandung, 40132
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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APLIKASI TEPUNG JAGUNG SEBAGAI KOAGULAN ALAMI UNTUK MENGOLAH LIMBAH CAIR TAHU Prihatinningtyas, Eka; Effendi, Agus Jatnika
Jurnal Teknik Lingkungan Vol 18, No 1 (2012)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.837 KB) | DOI: 10.5614/jtl.2012.18.1.10

Abstract

Abstrak: Proses pembuatan tahu menghasilkan banyak sekali limbah cair yang mempunyai karakteristik kekeruhan, total padatan dan total padatan tersuspensi yang tinggi. Salah satu proses pengolahan yang dapat dilakukan adalah dengan koagulasi. Tepung jagung dapat digunakan sebagai koagulan alami. Tujuan dari penelitian ini adalah mencari kondisi optimum pengolahan limbah cair tahu dengan meggunakan koagulan alami yang terbuat dari tepung  jagung. Ekstrak jagung dapat dibuat dengan cara melarutkan 5 gram tepung jagung dalam 100 ml NaCl dan diaduk selama 30 menit. Selanjutnya campuran tersebut dipisahkan dengan sentrifugasi. Supernatan yang diperoleh dinamakan ekstrak jagung. Jagung  ionik diperoleh dengan cara melewatkan ekstrak jagung dalam kolom resin Amberlite. Hasil percobaan menunjukkan bahwa jagung dapat digunakan sebagai koagulan alami karena bersifat polielektrolit. Adanya gugus karboksil, hidroksil dan amida menyebabkan larutan polielektrolit ini bermuatan negatif. Hasil koagulasi memberikan efisiensi penurunan kekeruhan yang cukup signifikan. Jagung ionik memberikan hasil penurunan kekeruhan yang lebih baik jika dibandingkan dengan ekstrak jagung karena jagung ionik bersifat lebih negatif daripada ekstrak jagung. Proses koagulasi yang terjadi pada kekeruhan awal yang tinggi memberikan efisiensi penurunan kekeruhan yang lebih baik dibandingkan dengan kekeruhan rendah. Proses koagulasi berjalan dengan efisien pada pH 5 karena pada titik tersebut diperoleh titik isoelektrik. Pada over flowrate kurang dari 0,03 m/menit, alum akan memberikan efisiensi penyisihan padatan tersuspensi yang lebih besar daripada ekstrak jagung. Sedangkan pada over flowrate lebih dari 0,03 m/menit kecepatan pengendapan kaolin dengan alum sama dengan ekstrak jagung.Kata kunci: koagulasi, koagulan alami, ekstrak jagung, jagung ionik. Abstract: Tofu industries produced amount of wastewater which characteristics of high in  turbidity, total solid and  total suspended solid. Coagulation can be done to reduce that parameters. Starch can be used as natural coagulant at this process. The aim of this research was found the optimum condition on tofu wastewater treatment using natural coagulant from maize. Maize extract made by dissolved 5 grams of maize into 100 ml NaCl and stirred 30 minutess to accomplish extraction and then separated by centrifugation. The supernatant named extract of maize. Extract of maize loaded onto column packed with Amberlite and produced ionic maize. The experimental results show that the maize can be used as a natural coagulant because they are polyelectrolytes. Presence of carboxyl, hydroxyl and amides groups led to this solution are anionic polyelectrolytes. The results of the efficiency of coagulation provide a significant turbidity removal.  Ionic maize yield better turbidity removal compared to extract of maize because ionic maize more negative than extract of maize. Coagulation processes that occur at high initial turbidity gave efficiency of  turbidity removal better than low turbidity. Coagulation process runs efficiently at pH 5 because at that point obtained the isoelectric point.  At over flowrate of more than 0.03 m/ min, the alum will provide efficiency of suspended solids removal greater than extract of maize. While the over flowrate less  than 0.03 m / min, settling velocity of kaolin using  alum and extract of maize are the same. Keywords: coagulation, natural coagulant, extract of maize, ionic maize. 
Karakterisasi Ekstrak Tapioka dan Tapioka Ionik sebagai Biokoagulan dalam Proses Pengolahan Air Prihatinningtyas, Eka; Effendi, Agus Jatnika
Jurnal Teknologi Lingkungan Vol. 19 No. 2 (2018)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.274 KB) | DOI: 10.29122/jtl.v19i2.2041

Abstract

ABSTRACTThe ability of tapioca to act as natural coagulants (biocoagulants) was tested using artificial water. As turbidity was added as kaolin. This research aimed to determine the compounds and or groups that act as natural coagulant and to describe the mechanism of flocculation: extraction which yields tapioca extract and ion exchange which yields ionic tapioca. Coagulation process was performed at three different initial turbidities, i.e. 50 NTU (low turbidities), 150 NTU (middle turbidities) and 300 NTU (high initial turbidites). At the same condition (coagulant dose 20 ppmv, pH 5), ionic tapioca yield better turbidity removal compared tapioca extract i.e 11.2% at low initial turbidites; 2.4% at middle initial turbidities and 12.8% at high initial turbidities. FTIR analysis  showed that tapioca extract and ionic tapioca contained of carboxyl, hydroxyl and amides groups which  can act as active components on coagulation process. The presence of those groups caused positive and negative charges (amphoter). Coagulation process ran efficiently at pH 5 because the isoelectric point is obtained at that condition.Keyword : bio coagulants, coagulation,  coagulant agents, ionic tapioca, tapioca extract,ABSTRAK Kemampuan tepung tapioka sebagai koagulan alami (biokoagulan) telah diuji dengan menggunakan limbah artifisial dari kaolin. Penelitian ini bertujuan untuk menentukan senyawa atau gugus yang berperan sebagai biokoagulan dan menjelaskan mekanisme flokulasi yang terjadi. Perlakuan awal tapioca sebelum digunakan sebagai koagulan adalah ekstraksi yang menghasilkan ekstrak tapioka  dan pertukaran ion  yang menghasilkan tapioka ionik. Proses koagulasi dilakukan pada 3 macam kekeruhan awal yaitu 50 NTU (kekeruhan rendah), 150 NTU (kekeruhan sedang) dan 300 NTU (kekeruhan tinggi). Pada kondisi operasi yang sama (dosis 20 ppmv dan pH 5), tapioka ionik memberikan efisiensi penurunan kekeruhan yang lebih tinggi, yaitu sebesar 11,0% pada kekeruhan awal 50 NTU; 2,4% pada kekeruhan awal 150 NTU dan 12,8% pada kekeruhan awal 300 NTU. Hasil analisa FTIR menunjukkan bahwa ekstrak tapioka dan tapioka ionik mempunyai gugus karboksil (-OH), gugus karboksil (-COOH) dan gugus amida (-CONH2). Keberadaan ketiga gugus tersebut menyebabkan biokoagulan ini memiliki muatan positif dan negatif sekaligus (amfoter). Proses koagulasi berjalan dengan efisien pada pH 5 karena titik isoelektrik diperoleh pada pH tersebut. Kata kunci : biokoagulan, koagulasi, agen koagulan, ekstrak tapioka, tapioka ionik
Variasi Konsentrasi Air Limbah Proses Pencucian Pulp pada Membraneless Air Cathode Microbial Fuel Cell Wardhana, Krisna Adhitya; Effendi, Agus Jatnika
JURNAL SELULOSA Vol 9, No 02 (2019): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v9i02.237

Abstract

Membraneless-Microbial Fuel Cell (ML-MFC) satu kompartemen dengan katoda kontak udara saat ini sedang dikembangkan dan menjadi alternatif solusi untuk sumber energi terbarukan yang mampu menghasilkan listrik dari proses degradasi substrat. MFC membutuhkan substrat yang kaya senyawa organik seperti air limbah dari proses pencucian pulp. Pada air limbah ini terdapat lindi hitam dalam kondisi terencerkan yang mengandung lignin dan kaya senyawa organik sehingga memiliki potensi untuk digunakan sebagai substrat dalam reaktor MFC. Selain itu, penggunaan substrat berupa air limbah industri memiliki efek yang baik terhadap lingkungan karena berkontribusi dalam pengurangan kontaminan. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi awal Chemical Oxygen Demand (COD) air limbah pencucian pulp sebagai substrat terhadap arus dan voltase listrik yang terjadi dalam MFC. Dalam penelitian ini, reaktor MFC mengolah air limbah pencucian secara batch dengan 4 variasi konsentrasi COD yaitu 613 mg/L, 833 mg/L, 940 mg/L, dan 1620 mg/L dengan pH 8,91 - 10,03. Hasil penelitian menunjukkan MFC mampu mereduksi COD air limbah pencucian pulp sebesar 34 - 48%. Terkait potensi listrik, akumulasi arus listrik yang terjadi pada MFC sebesar 12,67- 39,17 mA/m2 pada kisaran voltase tertinggi dari 4 reaktor sebesar 214 - 287 mV. The Concentration Variation of Wastewater From Pulp Washing Process in Membraneless Air Cathode Microbial Fuel CellA one compartment Membraneless-Microbial Fuel Cell (ML-MFC) with an air cathode was recently developed and became alternative solution for renewable energy sources to generate electricity from substrate degradation. MFC needs proper substrate that was rich in organic content such as wastewater from pulp washing process. The wastewater contains black liquor that was already diluted and contains lignin and high organic content, so that it would be potential as MFC substrate. Furthermore, the utilization of industrial wastewater as substrate can contribute positive effect to the environment namely contaminant reduction. This research was conducted to understand the effect of initial Chemical Oxygen Demand (COD) concentration of wastewater from pulp washing process to electricity current and voltage occured from MFC. The wastewater from pulp washing process with 4 initial COD concentrations (61, 833, 940, and 1620 mg/L) and pH ranged from 8,91 to 10,03 were batch treated in a batch system using the MFC. The results showed that 34-48% COD removal can be performed by MFC. Related with electricity potency from MFC, electricity accumulation current happened on 12,67 mA/m2 - 39,17 mA/m2 at highest voltage from 4 reactors of 214-287 mV.
PENYISIHAN MERKURI (HG) DARI AIR HASIL PENCUCIAN TANAH MENGGUNAKAN ADSORBEN GAC TERIMPREGNASI FE DAN CE Aulia, Rizki Rilda; Effendi, Agus Jatnika
Jurnal Teknik Lingkungan Vol 26, No 1 (2020)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.tl.2020.26.1.3

Abstract

Abstrak. Merkuri banyak digunakan secara bebas dalam proses amalgamisasi pada pertambangan emas skala kecil (PESK), salah satunya di Kabupaten Lebak, Banten. Merkuri dapat mengalami transformasi sehingga dapat meningkatkan mobilitas dan sifat racunnya. Hal ini menjadi perhatian karena dapat menjadi potensi polusi pada permukaan tanah, air tanah, penyerapan oleh tumbuhan serta bioakumulasi pada rantai makanan. Pada penelitian pendahuluan dilakukan proses remediasi merkuri pada tanah dengan metode soil washing menggunakan pelarut KI. Namun pada pengolahan menggunakan metode soil washing, air hasil pencucian membutuhkan pengolahan lebih lanjut sebelum akhirnya dibuang karena memiliki konsentrasi merkuri melebihi baku mutu (1-3 ppm) sehingga perlu dilakukan pengolahan lanjutan yakni adsorpsi menggunakan adsorben GAC terimpregnasi Fe dan Ce dengan sistem batch. Berdasarkan PP No 101 Tahun 2014 tentang pengolahan limbah B3, baku mutu merkuri pada TCLP A 0,3 ppm dan TCLP B 0,05 ppm. Percobaan menunjukan bahwa sistem batch memiliki nilai kapasitas adsorpsi terbaik pada jenis adsorben GAC-Ce sebesar 0,087 mg/g dan konsentrasi merkuri mengalami penurunan hingga mencapai 0,443 ppm. Proses adsorpsi merkuri menggunakan GAC, GAC-Fe dan GAC-Ce lebih cocok dimodelkan dengan model isotherm Freundlich. Proses adsorpsi merkuri menggunakan GAC dan GAC-Fe mengikuti kinetika orde kedua semu sedangkan GAC-Ce mengikuti kinetika orde dua. Kata kunci: adsorpsi, GAC, merkuri, impregnasi, air soil washing, batch.  Abstract. Mercury is widely used freely in the process of amalgamization in small scale gold mining (ASGM), one of which is in Lebak Regency, Banten. Mercury can undergo transformation so that it can increase its mobility and toxicity. This is a concern because it can be a potential pollution on the ground surface, ground water, absorption by plants and bioaccumulation in the food chain. In a preliminary study carried out the process of remediation of mercury in the soil with the method of soil washing using KI solvent. However, in the processing using the soil washing method, the washing water needs further treatment before finally being discharged because it has mercury concentrations exceeding the quality standard (1-3 ppm) so that further processing needs to be done ie adsorption using GAC adsorbent impregnated with Fe and Ce with a batch system. Based on PP No. 101 of 2014 concerning B3 waste treatment, the mercury quality standard at TCLP A is 0.3 ppm and TCLP B is 0.05 ppm. Experiments show that the batch system has the best value of adsorption capacity in the type of GAC-Ce adsorbent of 0.087 mg / g and the concentration of mercury has decreased to reach 0.443 ppm. The mercury adsorption process using GAC, GAC-Fe and GAC-Ce is more suitable to be modeled with the Freundlich isotherm model. The mercury adsorption process uses GAC and GAC-Fe following pseudo second-order kinetics while GAC-Ce follows second-order kinetics. Keywords: adsorption, GAC, mercury, impregnation, air soil washing, batch.
Penggunaan limbah tempe dalam biodegradasi zat warna azo menggunakan bioreaktor membran aerob-anaerob Putri Sri Komala; Agus Jatnika Effendi; IG Wenten; W Wisjnuprapto
Jurnal Teknik Kimia Indonesia Vol 8, No 3 (2009)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2009.8.3.5

Abstract

Tempeh waste is a form of waste that still has an economic value, due to its relatively high organic and nutrient content compared to yeast extract. In this research, tempeh waste was used as a co-substrate for the removal of azo dye from textile industry effluent using an aerobic-anaerobic membrane bioreactor. The bioreactor consists of a modified activated sludge process, i.e. a contact-stabilization process coupled with anoxic reactor and combined with an external ultrafiltration membrane to replace the sedimentation process in conventional activated sludge process. The feed consists of Remazol Black-5 azo dye at a concentration of 110-120 mg/L, and tempeh waste as an organic and nutrient source at 8-10% v/v concentration. An experiment was done to measure the effect of hydraulic retention time on dye removal, by varying the HRT in the contact tank at 1, 1.5, 2, 2.5, and 3 hours, and that of  stabilization- and anoxic tanks kept constant at 4 and 3 hours. From the experiment a 41-51% removal of the dye and 46-65% removal of organic compounds were obtained. The highest dye and organic compound removal was obtained at a contact HRT of 2 hours, namely 51% of dye removal and 65% of organic removal efficiencies. An auto-oxidation process occurs in the contact tank, resulting in an increase in the dye concentration.Keywords: tempeh waste, membrane bioreactor, Hydraulic Retention Time (HRT), contact tank, azo dye. Abstrak Limbah tempe merupakan salah satu limbah yang masih memiliki nilai ekonomis, karena kandungan senyawa organik dan nutrien yang terdapat didalamnya masih relatif tinggi jika dibandingkan dengan yeast extract. Dalam penelitian ini limbah tempe digunakan sebagai ko-substrat untuk penyisihan zat warna azo dari industri tekstil dengan menggunakan bioreaktor membran aerob-anaerob. Bioreaktor terdiri dari modifikasi proses lumpur aktif yaitu proses kontak-stabilisasi yang dihubungkan dengan reaktor anoksik dan dikombinasikan dengan membran ultrafiltrasi secara eksternal. Umpan terdiri dari zat warna azo Remazol Black-5 pada konsentrasi 110-120 mg/L dan limbah tempe sebagai sumber organik dan nutrien dengan konsentrasi 8-10% v/v. Percobaan dilakukan untuk mengamati pengaruh waktu retensi hidrolik (hydraulic retention time, HRT) tangki kontak terhadap penyisihan warna dengan variasi HRT tangki kontak antara 1, 1½, 2, 2½ dan 3 jam, sedangkan tangki stabilisasi dan anoksik pada HRT konstan 4 dan 3 jam. Dari percobaan dihasilkan penyisihan warna berkisar antara 41-51% dan penyisihan senyawa organik antara 46-65%. Baik penyisihan warna maupun senyawa organik terbesar dihasilkan pada HRT kontak 2 jam yaitu 51% untuk penyisihan warna dan 65% untuk penyisihan senyawa organik. Pada tangki kontak terjadi autoksidasi yang menyebabkan kenaikan konsentrasi warna.Kata Kunci: limbah tempe, bioreaktor membran, waktu retensi hidrolik (HRT), tangki kontak, zat warna azo.
A Case Study of Excreta Disposal Following the 2006 Java Earthquake* Thye Yoke Pean; Agus Jatnika Effendi; Prayatni Soewondo; Damir Brdjanovic; Tjandra Setiadi
Journal of Engineering and Technological Sciences Vol. 47 No. 2 (2015)
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.2015.47.2.9

Abstract

Providing safe excreta disposal following disasters is important for disease prevention and the safety and dignity of the affected population. This is challenging because every emergency varies due to the nature of the disaster, local conditions and the characteristics of the affected population. This paper investigates the impact of the 2006 Java earthquake on excreta disposal needs and the response to those needs. Relevant documents were retrieved from the ReliefWeb database, complemented by a literature search. The case study highlights gaps in rapidly providing latrines on a large scale. Three months after the disaster, only 57% of the latrines targeted had been provided. One way to address this problem is to better understand the factors affecting excreta disposal needs and response, allowing appropriate solutions to be identified more effectively.
Removal of COD & NH3 from Produced Water using Modified Horizontal Subsurface Flow Constructed Wetlands (HSCW) Agus Jatnika Effendi; Regi Risman Sandi
Reaktor Volume 18 No. 3 September 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (541.664 KB) | DOI: 10.14710/reaktor.18.03.166-170

Abstract

It is very common that COD and NH3 are found in Produced Water with elevated concentration. One proven technology that is capable in removing organic substances and nutrients, is Horizontal Subsurface Flow Constructed Wetland (HSCW). Based on characterization of produced water from one oil field in Indonesia, it was shown that COD and NH3 were found to exceed the threshold limit stated in Ministry of Environmental Decree no. 19 Year 2010. Modified HSCWs were developed in order to treat produced water containing high concentration of COD and NH3 and allowing anaerobic process to occur in the reactor. The HSCWs were planted by three different species; they were Sagittaria palaefolia (Jasmine Water), Scirpus grossus (Mensiang), and Typha latifolia (Walingi). Organic loading rates (OLRs) to the HSCWs reactor were varied from 7.2 to 72 gr COD/m2.day. It was found that HSCW planted with Typha latifolia had the highest removal efficiency for both COD and NH3 when the OLR was set at 14.4 gr COD/m2.day. Anaerobic bacteria were found in high number indicating that these bacteria involved actively in removing pollutants containing in produced water. However, further microbiology study should be performed in order to determine the role of anaerobic bacteria.
Hidrokarbon Aromatik Polisiklik pada Lahan Tercemar Limbah Minyak Bumi: Tinjauan Pertumbuhan Mikro-Organisme, Proses Metabolisme dan Biodegradasi Allen Kurniawan; Yanuar Chandra Wirasembada; Indah Mutiara Ningtyas Razaad; Adi Novriansyah; Mohamad Rafi; Agus Jatnika Effendi
Jurnal Ilmu Lingkungan Vol 16, No 1 (2018): April 2018
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (38.4 KB) | DOI: 10.14710/jil.16.1.9-24

Abstract

ABSTRAKHidrokarbon Aromatik Polisiklik (HAP) berasal dari proses alamiah dan limbah antropogenik di lingkungan. HAP merupakan polutan di udara, tanah, dan padatan yang mengendap pada fase cair (sedimen) dan berkembang akibat pembakaran tidak lengkap material organik. Kajian ini berupa studi literatur mengenai informasi secara lebih detil tentang laju kenaikan HAP pada tanah, gambaran umum proses metabolisme, proses biodegradasi HAP melalui keterlibatan mikroorganisme, dan alternatif pengolahan sebagai media teknologi penunjang aktivitas proses degradasi. Proses degradasi HAP dan substrat hidrofobik digunakan untuk membatasi jumlah fase cair terlarut melalui sorbsi, kristalin, dan non-aqueous phase liquid (NAPL) sehingga HAP terlarut menjadi tidak tersedia. Laju peningkatan HAP di dalam tanah terbagi atas tiga fase, yaitu fase eksponensial, fase lanjutan dengan pertumbuhan pseudo-linear, dan fase pseudo-stasioner pada kondisi tidak ideal berdasarkan ciri akses bakteri tersedia dalam jumlah tidak terbatas, dan transportasi substrat adalah homogen. Pada media heterogen, seperti tanah, HAP diserap dalam partikel organik pada pori-pori dengan ukuran kecil sehingga bakteri tanah tidak dapat mengakses HAP. Pada kasus pencemaran dalam skala besar, HAP akan berbentuk semacam tar droplet sehingga membatasi bakteri untuk mendegradasi HAP. Selain bakteri, jenis organisme dan mikroorganisme spesifik pendegradasi HAP dapat ditemukan pada jamur (fungi), cyanobacteria, dan alga.Kata kunci: biodegradasi, hidrokarbon aromatik polisiklik, mikroorganisme, proses metabolisme.ABSTRACTPolycylic Aromatic Hydrocarbons (PAHs) are derived from natural processes and the anthropogenic wastes in the environment. PAHs are pollutants found in the air, soil, and sediments which are developed due to incomplete combustion of the organic materials. This review provides a more detail literature study regarding the microbial growth, the metabolic process, and PAHs microbial biodegradation processes overview. The process of PAHs and the hydrophobic substrate degradation is applied to limit the amount of dissolved aqueous phase through sorption, crystalline, and non-aqueous phase liquid (NAPL) so that the dissolved PAHs are no longer available. microbial growth on PAHs as the sole carbon source can be divided into three phases which are the exponential phase, the advance phase with pseudo-linear growth, and pseudo-stationery phase in a non-ideal condition based on the characteristic of the unlimited bacterial access and the homogenous substrate transport. In the heterogeneous medium, such as soil, PAHs are absorbed into the organic particles of small sized pores so that the PAHs become inaccessible for the soil bacteria. In large scale pollution, the PAHs are in the form of tar droplets which limit the access for soil bacteria to degrade the PAHs. Other than bacteria, the specific organisms and microorganisms to degrade PAHs are found in fungi, cyanobacteria, and algae.Keywords: biodegradation, growth rate, metabolic process, microbial, polycyclic aromatic hydrocarbons.Citation: Kurniawan A., Wirasembada, Y.C., Razaad, I.M.N., Novriansyah, A., Rafi, M., Effendi, A.J.(2018). Hidrokarbon Aromatik Polisiklik pada Lahan Tercemar Limbah Minyak Bumi: Tinjauan Pertumbuhan Mikro-Organisme, Proses Metabolisme dan Biodegradasi, Jurnal Ilmu Lingkungan, 16(1), 9-24, doi:10.14710/jil.16.1.9-24
The Influence of ZnCl2 Activation on Macronutrient NPK Adsorption Simultaneously Using Coconut Shell Biochar for Soil Fertility Improvement Candra Purnawan; Christina Candra Dewi; Syafrudin syafrudin; Bimastyaji Surya Ramadan; Mochamad Arief Budihardjo; Agus Jatnika Effendi; Syarif Hidayat
Molekul Vol 16, No 1 (2021)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.35 KB) | DOI: 10.20884/1.jm.2021.16.1.713

Abstract

The influence of ZnCl2 activation on macronutrient Nitrogen, Phosphor, Potassium (NPK) adsorption simultaneously using Coconut Shell Biochar for soil fertility improvement has been conducted. Biochar formation is carried out at temperature up to 500 oC using variation in the concentration of ZnCl2 0,5; 1,0; 1,5; 2,0; dan 2,5 M. The biochar formed was characterized using Fourier Transform InfraRed (FTIR) spectroscopy and Surface Area Analyzer (SAA). Whereas NPK analysis has used the Indonesian standard method (SNI 7763: 2018). Based on this research, it was concluded that the greater the concentration of ZnCl2 activator, indicated that the higher intensity of the spectra of –OH and –NH2 at wave number 3400 cm-1 and 1600 cm-1. It showed that biochar activation was higher and a more active functional group was opened. Increasing the concentration of ZnCl2 activator has increased Biochar adsorption of NPK macronutrients. The optimum condition for activation of coconut shell Biochar was activation with ZnCl2 2.5 M. The addition of activated Biochar was increased soil adsorption on NPK macronutrients. Biochar addition had increased Nitrogen (N) adsorption up to 23.53%, Phosphor (P) up to 200%, and Potassium (K) up to 41.24%.
PENGARUH PERUBAHAN KONSENTRASI KO-SUBSTRAT TERHADAP POPULASI MIKROORGANISME PEMUTUS ZAT WARNA AZO DI BIOREAKTOR MEMBRAN Dini Adyasari; Agus Jatnika Effendi
Jurnal Teknik Lingkungan Vol. 16 No. 1 (2010)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614//jtl.2010.16.1.8

Abstract

Abstrak : Zat warna azo merupakan masalah utama dari limbah yang dihasilkan oleh industri tekstil. Zat warna azo menjadi begitu berbahaya karena sifatnya yang toksik dan mutagenik untuk kehidupan. Untuk menghilangkan zat warna azo pada air buangan, maka dikembangkan strategi baru untuk pengolahan air buangan secara biologi bernama bioreaktor membran (BRM). BRM yang memiliki 3 tangki, yaitu anoksik, kontak, dan stabilisasi, akan beroperasi dengan konsentrasi ko-substrat yang divariasikan, yaitu 2%, 4%, 6%, 8%, dan 10%. Tujuan penelitian ini adalah mengetahui dinamika populasi mikroba yang mempengaruhi proses rekayasa yang terjadi di dalam BRM, seperti penyisihan warna dan zat organik. Parameter yang diukur adalah perubahan populasi mikroba per tangki, identifikasi jenis mikroba dominan, dan pengaruh mikroba terhadap pendegradasian warna dan zat organik. Hasil menunjukkan bahwa pertumbuhan mikroba optimum terjadi di konsentrasi ko-substrat 6%. Mikroba sangat berperan terhadap pendegradasian zat warna azo, terutama mikroba di tangki anoksik. Spesies dominan yang berpengaruh terhadap proses rekayasa BRM diidentifikasi berjumlah 7 spesies.Abstract : The azo dye is the main problem of the waste produced by the textile industries. It is very dangerous to living entities due to its toxicity and mutagenic properties. In order to remove the properties (color) of the azo dye waste when disposing to the water environment, this research developed a new concept using a Biology Treatment Process called as a membrane bioreactor (BRM). BRM has three tanks, which is anoxic, contacts, and stabilization, and it operates with various co-substrate concentrations, namely 2%, 4%, 6%, 8%, and 10%. The purpose of this research is to determine the dynamics of microbial population that affect the engineering process occurs in the BRM, such as azo dyes decolorization and organic matter removal. Parameters being measured are the changes in microbial populations in each tank, the identification of dominant microbial species, and the influence of microbes on color and organic matter removal. Results showed that optimum microbial growth occurred in the co-substrate concentration of 6%. Microbes contribute significantly in azo dyes removal, especially microbes in anoxic tank. There are 7 species identified as dominant species that contribute in the engineering process of BRM.Keywords : azo dyes, membrane bioreactor, microbial growth, microbial identification, the dynamics of microbial population
Co-Authors Adi Novriansyah Adyasari, Dini Allen Kurniawan Ananthi, Naraina Andhika, Sena Ansiha Nur Aulia, Rizki Rilda Candra Purnawan Christina Candra Dewi Damir Brdjanovic Damir Brdjanovic Dini Adyasari Dissa Samatha Eka Prihatinningtyas Eka Prihatinningtyas IG Wenten Indah Mutiara Ningtyas Razaad Indriati, Narita Jatnika, Mohammad Faiz Krisna Adhitya Wardhana, Krisna Adhitya Mochamad Arief Budihardjo Mohamad Rafi Mohammad Faiz Jatnika Narita Indriati Nur, Ansiha Prayatni Soewondo Prayatni Soewondo Primanandi, Dendy Puti Sri Komala Putri Sri Komala Ramadan, Bimastyaji Surya Regi Risman Sandi Samatha, Dissa Sari, Eka Pravita Setiadi, Tjandra Syafrudin syafrudin Syarif Hidayat Tarigan, Azarya Yoseph Thye Yoke Pean Thye Yoke Pean W Wisjnuprapto Wenten, IG. Wisjnuprapto, Wisjnuprapto Yanuar Chandra Wirasembada