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Phytoremediation and Potency of Hyperaccumulator Plants NURIL HIDAYATI
HAYATI Journal of Biosciences Vol. 12 No. 1 (2005): March 2005
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (37.383 KB) | DOI: 10.4308/hjb.12.1.35

Abstract

Phytoremediation is defined as cleaning up of pollutants mediated primarily by plants. It is an emerging technology for environmental remediation that offers a low-cost technique suitable for use against different types of contaminants in a variety of media. Phytoremediation is potentially applicable to a diversity of substances, involving hyperaccumulators heavy metals and radionuclides. It is also applicable to other inorganic contaminants such as arsenic, various salts and nutrients, and a variety of organic contaminants, including explosives, petroleum hydrocarbons and pesticides. At least there are one taxon of plant as hyperaccumulator for Cd, 28 taxa for Co, 37 taxa for Cu, 9 taxa for Mg, 317 taxa for Ni, and 11 taxa for Zn. Extensive progress were done in characterizing physiology of plants which hyperaccumulate or hypertolerate metals. Hypertolerance is fundamental to hyperaccumulator, and high rates of uptake and translocation are observed in hyperaccumulator plants. Hyperaccumulator plants and agronomic technology were undertaken to improve the annual rate of phytoextraction and to allow recycling of soil toxic metals accumulated in plant biomass. These techniques are very likely to support commercial environmental remediation. Most phytoremediation systems are still in development, or in the stage of plant breeding to improve the cultivars for field use. However, application for commercial purposes has already been initiated. Many opportunities have also been identified for research and development to improve the efficiency of phytoremediation.
Mercury and Cyanide Contaminations in Gold Mine Environment and Possible Solution of Cleaning Up by Using Phytoextraction NURIL HIDAYATI; TITI JUHAETI; FAUZIA SYARIF
HAYATI Journal of Biosciences Vol. 16 No. 3 (2009): September 2009
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (44.037 KB) | DOI: 10.4308/hjb.16.3.88

Abstract

Water contamination with heavy metals, mainly mercury and cyanide (CN) due to small scale of public mines and large scale of industrial mines have been in concern to residents around the area. Surveys of heavy metal contamination in aquatic environments, such as rivers and paddy fields over two gold mine areas in West Jawa were conducted and possible solution of using indigenous plants for phytoremediation was studied. The results showed that most of the rivers and other aquatic environments were affected by gold mine activities. Rivers, ponds, and paddy fields around illegal public mines were mostly contaminated by mercury in considerably high levels, such as paddy fields in two locations (Nunggul and Leuwijamang, Pongkor) were contaminated up to 22.68 and 7.73 ppm of Hg, respectively. Whereas rivers located around large scale industrial mines were contaminated by CN. Possible solution of cleaning up by using green technology of phytoremediation was examined. Some plant species grew in the contaminated sites showed high tolerance and potentially effective in accumulating cyanide or mercury in their roots and above ground portions. Lindernia crustacea (L.) F.M., Digitaria radicosa (Presl) Miq, Paspalum conjugatum, Cyperus kyllingia accumulated 89.13, 50.93, 1.78, and 0.77 ppm of Hg, respectively. Whereas, Paspalum conjugatum, Cyperus kyllingia accumulated 16.52 and 33. 16 ppm of CN respectively. Key words: phytoextraction, contaminants, cyanide, mercury
Fitoekstraksi Sianida pada Centrosema pubescens Benth yang Tumbuh di Limbah Tailing Terkontaminasi Sianida Fauzia Syarif; Nuril Hidayati; Titi Juhaeti
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 1 (2009): February 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v14i1.2626

Abstract

Contamination of mined soil and water affects not only to agriculture system but alsofood chains and epidemiological problems. As soil metal can not be biodegraded,remediation of soil heavy metal risks has been a difficult and expensive goal. Presentlythere are several different strategies available for the clean up and restoration ofcontaminated soils. One approach to minimize risks from some toxic pollutants isphytoextraction using hyperaccumulator plants, known as phytoremediation. In thisresearch Centrosema pubescens was studied to examine its potency ashyperaccumulator against cyanide. Although cyanide is not categorized as heavymetal, its presence is considered as one of important toxic pollutants in theenvironments. Detoxification of cyanide (CN) contaminated soils and waters withplants seems to be a feasible option. Centrosema pubescens which proven tolerant anddominant in the CN contaminated environment was used in this research. The plantswere grown in tailing waste media added by 0, 10, 20 and 30 ppm CN. Different pHlevels were applied, i.e.+ 6 and +5. The results showed that the plants were capable ofgrowing under high level of CN. The results indicated that Centrosema pubescens canbe considered as high tolerance and potentially effective in accumulating CN, i.e up to3.564 ppm in roots and up to 3.564 ppm in shoot with concentration ratio (shoot/root)up to 1.13. The plants also indicated high tolerance by producing high biomass underhigh level of CN, i.e up to 36.517 g (under 20 ppm CN).
Potensi Hiperakumulasi Saccharum spontaneum pada Medium Limbah Tailing Terkontaminasi Sianida Nuril Hidayati; Titi Juhaeti; Fauzia Syarif
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 2 (2008): June 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v13i2.2677

Abstract

One approach to minimize risks from some toxic pollutants is phytoextraction using hyperaccumulator plants. These remarkable plant species accumulate appreciable high concentration of pollutants, including cyanide than normal plants. Although cyanide is not categorized as heavy metal, its presence is considered as one of important toxic pollutants in the environment. Detoxification of cyanide contaminated soils and waters with plants seems to be a feasible option. Since plants vary in their ability to accumulate specific contaminants, it is necessary to select plant species that can both accumulate and tolerate the contaminants. This study aims to characterized plants that grow under extreme contaminated media of gold mined tailing belongs to PT ANTAM Cikotok and to analyse their potencies as hyperaccumulators. Saccharum spontaneum which was proven tolerant and dominant in the contaminated site as well as potential in producing high biomass was used in this research. The plants were grown in tailing waste media added by 0, 5 and 10 mg kg-1 CN. Organic fertilizers i.e. manure and compost were applied to increase CN uptake. The results showed that the plants were capable of growing under the highest level of CN. Application of organic fertilizer increased plant uptake. The results indicated that Saccharum spontaneum can be considered as high tolerance and potentially effective in accumulating CN in their roots and above ground portions.
PENGEMBANGAN INSTRUMEN PENILAIAN PORTOFOLIO MATERI SISTEM PENCERNAAN KELAS XI SMA NURIL HIDAYATI
Berkala Ilmiah Pendidikan Biologi (BioEdu) Vol 5 No 3 (2016)
Publisher : Program Studi Pendidikan Biologi, FMIPA, Universitas Negeri Surabaya

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Abstract

Penelitian ini bertujuan untuk menghasilkan Instrumen Penilaian Portofolio Pada Materi Sistem Pencernaan Kelas XI SMA yang layak dan sesuai dengan tuntutan penilaian Kurikulum 2013. Pengembangan instrumen penilaian portofolio ini menggunakan model pengembangan ADDIE yang terdiri dari lima tahap, yaitu Analysis, Design, Develop, Implemetation, dan Evaluation. Kelayakan instrumen penilaian portofolio didapatkan berdasarkan 2 metode yaitu validasi oleh 4 validator dan pemberian angket respon guru yang diisi oleh 4 guru biologi SMAN 1 Bangil.Hasil penelitian berupa instrumen penilaian portofolio pada materi Sistem Pencernaan kelas XI sesuai tuntutan penilaian kurikulum 2013 mencakup pemetaan penilaian portofolio materi Sistem Pencernaan, tata cara penilaian portofolio, petunjuk pelaksaaan penilaian portofolio siswa, lembar konsultasi portofolio siswa, lembar penilaian diri siswa, tugas 1 siswa, rubrik penilaian portofolio tugas 1 siswa, tugas 2 siswa, rubrik penilain portofolio tugas 2 siswa, dan format penilaian portofolio siswa materi Sistem Pencernaan. Instrumen Penilaian Portofolio dinyatakan layak dalam segi validitas dengan persentase sebesar 97% dan mendapat respon positif guru biologi sebesar 90% dengan kategori sangat positif.Berdasarkan hasil penelitian dapat disimpulkan bahwa instrumen penilaian portofolio pada materi Sistem Pencernaan kelas XI layak digunakan dan sesuai dengan tuntutan penilaian Kurikulum 2013. Kata kunci: Kelayakan Instrumen Penilaian, Penilaian Kurikulum 2013, Penilaian Portofolio, dan Sistem Pencernaan.
HUBUNGAN AIR DAN TANAMAN DIPELAJARI SECARA TERINTEGRASI DENGAN MODEL SIMULASI DINAMIK Nuril Hidayati
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1152

Abstract

Water is the most crucial factor in affecting plant growth and production.In order to assess the complex relationship between plant and water,a dynamic model of crop growth was constructed by interlinking plant growth and soil water models.The growth model mainly consists of physiological processes, i.e.photosynthesis, respiration, partitioning, leaf growth and phenological development.The photosynthesis and partitioning models are based on SUCROS, extended in two ways, the calculation of light use efficiency as a function of air temperature and extinction coefficient as a function of LAI.The development model was calculated based on thermal time concept.Water balance model comprises evaporation and transpiration as water losses, and rainfall and irrigation as water sources at 1 m - depth. Evaporation was based on Penmann Monteith formula.Both models were linked by relating the degree of growth reduction to water deficits. Simulation results showed a good agreement with observed data in predicting soil water deficits and crop water use for all of the treatments, i.e.irrigated, irrigated just after flowering, dry and rainfed.Despite the model predicted soil water considerably well, it tent to overestimate soil water deficits in the beginning of the growing period for both years. The results also showed a good agreement between simulated and observed dry matter production,especially under irrigated and rainfed conditions.
Flow Akademik dan Prokrastinasi Akademik Nuril Hidayati; Lailatuzzahro Al-Akhda Aulia

Publisher : Ilmu Psikologi Universitas Yudharta Pasuruan

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Abstract

Procrastination is behavior that is often carried out in everyday life. One of them is in the wor ld of education, where the students deliberately delaying to begin or complete the tasks assigned in school or so-called academic procrastination. Students often do it because, they are waiting for the right time to work with focus and uncomfortable study flow academic or not conditions. Academic procratination scale with coefficient of pearson product moment correlation betwen 0,303 to 0,638 and coefficient of reliability 0,899 and to scale the flow academic 0,313 to 0.681 with a reliability coefficient of 0.93. Thus, all the scale is reliable to use. This study uses 120 students were selected by stratified random sampling of 759 students. The regression analysis of predictors obtained Freg value of 8.319. Thus, there is a highly significant relationship between academic procrastination with academic flow. Flow academic influence forming 6.59% of the academic procrastination behavior. Thus, it can be concluded that the hypothesis that there is a relationship between acadeic with academic procrastination accepted at significance level of 1%, which amounted to -0.257 r xy is greater than can be predid r table 5%. This means that the higher academic flow conditions of the students, the lower academic procrastination behavior of the student, and vice versa when the high academic procrastination behavior so low flow academic.
Problematika Pemanfaatan Sumber Dan Media Belajar Pada Guru PAI di MTs Hidayatussubban Dringo Todanan Blora Afni Firdausia; nuril hidayati
An Nuur Vol 11, No 1 (2021): Jurnal Ilmiah An-Nuur
Publisher : Sekolah Tinggi Agama Islam Almuhammad Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (683.359 KB) | DOI: 10.58403/annuur.v11i1.19

Abstract

Salah satu cara untuk menunjang keberhasilan guru dalam proses belajar mengajar di kelas yaitu dengan menyediakan alat bantu yang disebut sumber dan media belajar. Sering kali penggunaan sumber dan media belajar tak sesuai dengan materi yang diajarkan sehingga mengakibatkan guru kurang maksimal dalam menyampaikan materi. Kurangnya pengetahuan tentang perkembangan ilmu pengetahuan juga menjadikan guru kesulitan dalam penggunanaan sumber dan media belajar di sekolah. Metode analisis yang digunakan ada tiga tahap yaitu reduksi data, penyajian data, dan verifikasi data. Untuk pemeriksaan keabsahan data, peneliti menggunakan metode Triangulasi, dalam tehnik pengumpulan data. Hasil penelitian menunjukkan bahwa guru PAI di MTs Hidayatussubban masih belum dapat menggunakan atau mengoperasikan sumber belajar yang ada disekitar lingkungannya secara tepat, dan penggunaan media yang kurang tepat juga menjadikan siswa kurang berkonsentrasi dalam menerima pelajaran.  .
Pengembangan Lembar Kegiatan Siswa Materi Sistem Saraf, Indera, dan Hormon Nuril Hidayati
saintifika Vol 17 No 2 (2015)
Publisher : FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (203.682 KB)

Abstract

Pembelajaran Biologi saat ini ditekankan pada pendekatan kontekstual dan konstruktivisme dimana bukan saja pengetahuan yang mereka peroleh namun bagaimana mereka dapat menyikapi dan menerapkan apa yang telah mereka pelajari. Berdasarkan hasil observasi bahwa proses pembelajaran mata pelajaran Biologi seringkali dilakukan secara presentasi secara monoton dan belajar mandiri sehingga siswa kurang tertarik dan cenderung tidak memperhatikan. Siswa dituntut menggunakan lembar kegiatan siswa (LKS) yang kurang terarah dan kurang sesuai dengan kompetensi inti (KI) dan kompetensi dasar (KD) yang ditetapkan. Upaya pemecahan masalah yang dihadapi adalah dengan adanya inovasi bentuk lembar kegiatan siswa yang dirancang secara khusus berdasarkan KI dan KD serta karakteristik siswa dan kebutuhan sekolah. Tujuan dari penelitian ini adalah menghasilkan lembar kegiatan siswa yang layak dan valid yang sesuai dengan KI dan KD. Metode penelitian yang digunakan sesuai dengan model pengembangan Thiagarajan dengan empat tahap yakni define, design, develop, dan disseminate namun dalam penelitian ini hanya dilakukan sampai tahap develop saja. Objek penelitian adalah siswa kelas XI SMAN 9 Malang. Hasil penelitian ini diperoleh bahwa hasil penilaian validator menunjukkan kriteria valid dan layak untuk dipergunakan.
STUDI PENGARUH MASSA BAHAN TERHADAP KUALITAS KRISTAL BAHAN SEMIKONDUKTOR Sn(S0.6Te0.4) HASIL PREPARASI MENGGUNAKAN METODE BRIDGMAN THE STUDY OF MASS EFFECT ON THE QUALITY CRYSTAL OF SEMICONDUCTOR MATERIAL Sn (S0.6Te0.4) PREPARATION BY USING BRIDGMAN’S METHOD Nuril Hidayati; Ariswan Ariswan
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 6 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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Abstract

AbstrakTujuan penelitian ini adalah untuk mengetahui struktur kristal, morfologi permukaan kristal, dan komposisi kimia bahan kristal semikonduktor Sn(S0.6Te0.4) yang dipreparasikan dan ditumbuhkan menggunakan metode Bridgmann. Pada penelitian ini dibuat tiga sampel dengan variasi massa bahan. Massa bahan yang digunakan pada sample pertama sejumlah 1,996 gram, sampel kedua 2,003 gram dan sampel ketiga 2,010 gram. Dalam penelitian ini suhu yang digunakan untuk pemanasan ketiga sampel adalah sama yaitu mulai dari 280C, 3000C selama 2 jam, dan 6000C selama 6 jam. Sifat-sifat kristal Sn(S0.6Te0.4) hasil preparasi dikarakterisasi menggunakan XRD untuk mengetahui struktur kristal, SEM untuk mengetahui morfologi permukaan kristal dan EDAX untuk mengetahui komposisi kimia kristal. Hasil karakterisasi XRD menunjukkan bahwa kristal Sn(S0.6Te0.4) yang terbentuk merupakan polikristal dengan stuktur Orthorombik. Parameter-parameter kisi sampel pertama adalah a = 4,426 Å, b = 11,151 Å dan c = 3,959 Å, untuk sampel kedua adalah a = 4,273 Å, b = 11,134 Å dan c = 3,934 Å, sedangkan untuk sampel 3 adalah a = 4,286 Å, b = 11,134 Å dan c = 4,059 Å. Hasil analisis SEM menunjukkan bahwa kristal Sn(S0.6Te0.4) adalah homogen. Sedangkan hasil analisis EDAX memperlihatkan kristal Sn(S0.6Te0.4) mempunyai komposisi kimia Sn, S dan Te dengan perbandingan molaritas 1 : 0,57 : 0,42Kata kunci : teknik bridgmann, struktur kristal, morfologi permukaan, komposisi kimia, kristal Sn(S0.6Te0.4)AbstractThe purpose of this study was to determine the crystal structure, crystal surface morphology, and chemical composition crystal of the semiconductor cryetal material Sn(S0.6Te0.4) which was preparation and grown by using Bridgman method. There were three samples were made with material mass variation. Material mass that was used in the first sample was 1,996 grams, the second sample was 2,003 grams and the third sample was 2,010 grams. The temperature used in this research to the sample were heated from 280C, 3000C during 2 hours, and 6000C during 6 hours. The properties of crystaline Sn(S0.6Te0.4) were characterized by using XRD to determine the crystal structure, SEM to determine the crystal surface morphology and EDAX to determine the chemical composition. The result XRD characterization showed that crystal Sn(S0.6Te0.4) was a polycristalline whit structured orthorhombic structure. The lattice parameters of the first sample were a = 4,426 Å, b = 11,151 Å and c = 3,959 Å, the second sample were a = 4,273 Å, b = 11,134 Å and c = 3,934 Å, and the hird sample were a = 4,286 Å, b = 11,134 Å and c = 4,059 Å. The result SEM analysis showed that crystal Sn(S0.6Te0.4) was homogeneous. The EDAX analysis shows crystal Sn(S0.6Te0.4) has chemical compositions of Sn, S and with molar ratio 1: 0,57: 0,42Keywords: Bridgmann method, crystal structure, surface morphology, chemical composition, crystal Sn(S0.6Te0.4)