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ANALISIS KIMIA KAYU KARET ( Heavea brasiliensis Muell. Arg. ) DIAWETKAN SECARA TRADISIONAL
Get PDFChemical Analysis of Wood Rubber (Heavea brasiliensis Muell. Arg.) Preserves in Traditional        Rubber wood (Hevea brasiliensis Muell.Arg.) is one type of wood is not preserved, so it is easily attacked by wood destroying insects such as dry powder beetles, dry wood termites, termites, and ambrosia beetles. To solve this problem was the preservation of wood, both in traditional or modern. The preservation of wood in the traditional way, such as by immersion in water, boiling and steaming. In this research, analysis of levels of starch, cellulose and lignin in rubber wood, marinated, boiled or steamed. The goal was to determine the levels of starch, cellulose and lignin in rubber wood that has been given the treatments compared to the control. Soaking process conducted for 3, 7 and 14 days. While boiling and steaming during 0.5, 1 and 2 hours. The analyzes were performed with Luff-Schoot method for the determination of levels of starch and Chesson method for determination of cellulose and lignin. Strach and lignin analysis results indicated a declining trend in treatment for soaking, boiling and steaming compared with controls. But not so in the levels of cellulose. The conclusion was soaking in water for 7 days or boiling or steaming for 1 hour already could lower levels of starch.Keywords: rubber wood, traditional preservation, starch, cellulose, lignin. ABSTRAK       Kayu karet ( Hevea brasiliensis Muell.Arg. ) merupakan salah satu jenis kayu yang tidak awet, sehingga mudah diserang oleh serangga perusak kayu seperti kumbang bubuk kering , rayap kayu kering, rayap tanah, dan kumbang ambrosia. Untuk mengatasi masalah tersebut perlu dilakukan pengawetan kayu baik secara tradisional maupun modern. Pengawetan kayu dengan cara tradisional, antara lain dengan cara perendaman dalam air , perebusan dan pengukusan. Pada penelitian ini dilakukan analisa kadar pati, selulosa dan lignin pada kayu karet yang direndam , direbus atau dikukus. Tujuannya adalah untuk mengetahui kadar pati, selulosa dan lignin pada kayu karet yang sudah diberi perlakuan tersebut dan dibandingkan dengan kontrol. Proses perendaman yang dilakukan selama 3, 7 dan 14 hari. Sedangkan perebusan dan pengukusan selama 0,5 , 1 dan 2 jam. Analisa dilakukan dengan metode Luff-Schoot untuk penetapan kadar pati dan metode Chesson untuk penetapan kadar selulosa dan lignin. Hasil analisa kadarpati dan lignin menunjukkan adanya kecenderungan penurunan pada perlakuan perendaman , perebusan dan pengukusan dibandingkan dengan kontrol. Tetapi tidak demikian pada kadar selulosanya. Kesimpulannya adalah perendaman dalam air selama 7 hari atau perebusan atau pengukusan selama 1 jam sudah dapat menurunkan kadar pati.Kata kunci : kayu karet, pengawetan tradisional, pati, selulosa, lignin
PENGEMBANGAN EKOWISATA BERBASIS MASYARAKAT DI PULAU HARAPAN TAMAN NASIONAL KEPULAUAN SERIBU, JAKARTA
Get PDFImplementation of research activities conducted in the area of Hope Island Thousand Islands National Park . The purpose of this research is ( i ) Identify the potential of tourism in Hope Island TNKpS , ( ii ) Identify the readiness of the community in the development of community-based ecotourism ( iii ) Developing a community-based ecotourism in the area of Hope Island TNKpS . Data on the public , managers and visitors obtained by distributing questionnaires and interviews . Respondent data retrieval community and visitors conducted by interview and questionnaire , sampling methods conducted by purposive sampling method . Purposive sampling method used to obtain data on natural resources and human resources at the Hope Island , while the data on perception , motivation , participation and public interest is taken by using the questionnaire . Meanwhile , the development of community-based ecotourism in Hope Island , formulated using SWOT analysis approach . Data were analyzed using SWOT table .Research results indicate that the potential for ecotourism resources contained in the Hope Island which can be used as a tourist attraction and cultural landscape of the Hope Island itself, from the readiness of the community , the majority of the community supports the development of ecotourism in Hope Island , based on the SWOT matrix , strategy higher in priority to the development of ecotourism activities in Hope Island is a strategy that combines the strengths and opportunities is developing a program of community-based ecotourism activities that combine the potential of nature and culture of Hope Island to attract visitor
PENGARUH MUTILASI DAN ABLASI TERHADAP MOLTING KEPITING BAKAU (Scylla Serrata) SEBAGAI KEPITING LUNAK
Get PDFEffect of Mutilation and Ablation to Molting of Mangrove Crab (Scylla serrata) as Soft Crab         Soft crabs that are more expensive than regular crab, that having hard carapace, in nature and in culture are very difficult to find. This study aimed to get the soft crabs more easily controlled the number of molting in culture, by the method of mutilation and ablation. Thus the supply in market will be able to meet existing demand. Four treatment techniques had been implemented namely mutilation, ablation, ablation + mutilation, and controls which each performed four replications. Complete Randomized Desaign (CRD) was used because the experiment was conducted in a fairly homogeneous patch of tambak pond. Experimental unit in the form of bamboo pen cages with the size of 2x1x1m filled with 20 crabs.  All experimental crabs were ready for molting (dark color) even with 40-90 g of varied sizes. The results showed that each week until the third week, the average number of crabs per unit experiment with techniques of mutilation was always having highest of molting number, respectively 1.00, 3.25, and 11.00 crabs and having the lowest mortality rate, respectively 0. 25, 1.75, and 1.25 crabs, compared with the ablation, mutilations + ablation technique, and control. Statistically four treatments in molting, in week two and three was significantly different , eventhough in mortality was not (α = 5%).Keywords : mangrove crab (Scilla serrata), soft crabs, mutilation, ablation ABSTRAK               Kepiting lunak yang harganya lebih mahal dari kepiting biasa bercangkang keras, di alam maupun dalam budidaya sangat susah ditemukan.  Penelitian ini bertujuan untuk mendapatkan kepiting lunak yang lebih mudah terkontrol jumlahnya dalam budidaya, dengan metoda mutilasi dan ablasi. Dengan demikian dalam pasar ketersediaannya akan dapat memenuhi permintaan yang ada. Empat perlakuan telah dilaksanakan yaitu teknik mutilasi, ablasi, mutilasi+ablasi, dan kontrol dengan masing-masing dilakukan empat kali ulangan. Rancangan Acak Lengkap (RAL) digunakan karena percobaan ini dilakukan di suatu petak tambak yang cukup homogen. Unit percobaan berupa keramba bambu tancap ukuran 2x1x1m yang diisi 20 kepiting yang semua kepiting dalam percobaan siap molting (warnanya gelap) meskipun dengan ukuran yang bervariatif 40-90 g. Hasil penelitian menunjukan bahwa tiap minggu sampai pada minggu ke tiga rata-rata jumlah kepiting per unit percobaan dengan teknik mutilasi selalu tertinggi terjadinya proses molting yaitu masing–masing 1,00; 3,25; dan 11,00 ekor dan mortalitasnya terendah yaitu 0,25; 1,75; dan 1,25 ekor dibanding dengan teknik ablasi, mutilasi+ablasi; dan kontrol. Secara statistik ke empat perlakuan dalam molting pada minggu ke dua dan ke tiga berbeda nyata hasil terbaik ditunjukkan oleh perlakuan mutilasi, meskipun dalam mortalitas tidak berbeda nyata (selang kepercayaan 95 %).Kata Kunci : Kepiting bakau (Scilla serrata), kepiting lunak, mutilasi, ablasi
EKSTRAKSI PADAT-CAIR ZnO DENGAN ASAM DARI DEBU FILTER PROSES PEMBUATAN BAJA
Get PDFZnO Solid – Liquid Extraction with Filter Dust Acid from The Steel Making Proccess          Zinc Oxide is a white metal oxide which is widely used in various industries. Zinc oxide can be produced with the direct, indirect process (method of France) and hydrometallurgical. Source manufacture ZnO derived from material containing zinc metal. The content of ZnO in the dust filter in the steel making process as a potential raw material for the manufacture of ZnO. The purpose of this study was to determine the type of acid and concentration were better for extraction ZnO viewed from purity and the yield. This research was conducted by method of  solid-liquid extraction, followed by the presipitation process. Testing of purity of ZnO with better extraction result were H2SO4 0,75 M was 89.67% with a yield of 97.73%, while the H2SO4 0,50 M was 80.45% (yield 63.96%), H2SO4 0,25 M was 76,48% (46.95% yield), HCl 0,75 M was 79.23% (81.70% yield), HCl 0,50 M was 76.98% (yield 49%), and HCl 0,25 M was 74.57% (30.23% yield). ZnO composition data from extraction results were analyzed using X-ray fluorescence (XRF).Key words: Solid-liquid extraction, ZnO, Dust, Steel, XRF ABSTRAK            Seng Oksida merupakan oksida logam berwarna putih yang banyak digunakan di berbagai industri. Seng oksida dapat diproduksi dengan proses langsung, proses tidak langsung (metode Prancis) dan hidrometalurgi. Sumber pembuatan ZnO berasal dari material yang mengandung logam seng. Kandungan ZnO dalam debu filter pada proses pembuatan baja berpotensi sebagai bahan baku untuk pembuatan ZnO. Tujuan dari penelitian ini adalah menentukan jenis asam dan konsentrasi yang lebih baik untuk ekstraksi ZnO dilihat dari kemurnian dan rendemennya. Penelitian ini dilakukan dengan metode ekstraksi padat-cair  yang dilanjutkan dengan proses pengendapan. Pengujian kemurnian ZnO hasil ekstraksi yang lebih baik yaitu H2SO4 0,75 M adalah 89,67% dengan rendemen 97,73%, sedangkan H2SO4 0,50 M adalah 80,45% (rendemen 63,96), H2SO4 0,25 M adalah 76,48% (rendemen 46,95%), HCl 0,75 M adalah 79,23% (rendemen 81,70%), HCl 0,50 M adalah 76,98% (rendemen 49%), dan HCl 0,25 M adalah 74,57% (rendemen 30,23%). Data komposisi hasil ekstraksi ZnO yang dianalisis menggunakan X-ray fluorescence (XRF).Kata Kunci : Ekstraksi padat-cair, ZnO, Debu Baja, XR
ANALISIS KADAR AMONIA (NH3) DALAM AIR DI SUNGAI CILEUNGSI
Get PDFThe increasing number of their activities and industry, have caused the changes on the quality of the water .Research aimed at determined ammonia in the waters of the cileungsi with the methods non standard salycilate test kit of the spectrophotometer uv-visible with reference method fenat based on sni 06-6989.30-2005 .Research carried out with the methods purposive sampling , the sample of the water drawn represent part upstream , central and hilir the river cileungis .The results of the analysis and testing in the laboratory , ammonia levels in a stream cileungsi be between 0,160-0,460 mg / l and consequently qualified of quality standard pp no. 82 2001
PEMANFAATAN TALAS BOGOR (Colocasia esculenta (L) Schoot) SEBAGAI LARVASIDA NYAMUK
Get PDFUse of Bogor Taro (Colocasia esculenta (L)) Schoot  as a Mosquito Larvacide       The case of dengue fever in Indonesia is still a major issue. Various efforts have been made towards the controllingof mosquitoes which have succeeded either chemically or naturally. Colocasia esculenta (L.)Schott (Bogor taro) have the potential to be a larvacide to exterminate mosquito larva. Taro is one of the many plants used as a source of non-rice carbohydrate that contains a high amount of nutrients, taro also contains anti nutrition .The purpose of this research was to harness waste from the Bogor taro harvest in which the use of the leaves and stem. Generally, the leaves and stem of taro is used as food for cattle as well as the presence of anti nutrition.The result of the phytochemical analysis had shown that taro (Colocasia esculenta (L) Schott), consists of anti nutrition substance, other than calcium oxalate, saponin, tannin, flavonoid, thereby potentially being a larvacide. During the preliminary test, a LC50 with a magnitude of 83 ppm was obtained for the concentration of the stem extract and 61,75 ppm for the leaf extract. The leaf extract had a stronger ability than the stem extract for it can could 50% of the sample being testedKey words: larvacide, antinutritrion,metabolite secondary ABSTRAK       Kasus demam berdarah dengue (DBD) di Indonesia, masih sangat mengkhawatirkan. Berbagai upaya pengendalian terhadap kerapatan populasi nyamuk telah dilakukan baik secara kimia maupun alamiah. Colocasia esculenta (L.)Schott (talas Bogor) berpotensi sebagai larvasida untuk membunuh larva nyamuk.Talas merupakan salah satu tanaman sumber karbohidrat non beras yang bergizi tinggi. Tetapi talas juga memiliki zat antinutrisi. Penelitian ini bertujuan memanfaatan limbah hasil panen talas Bogor yang berupa daun dan batang yang masih terbatas penggunaannya, umumnya digunakan sebagai makanan ternak. Hasil uji fitokimia bahwa talas Bogor, mengandung zat antinutrisi diantaranya, kalsium oksalat, saponin, tannin, dan flavonoid, adanya kandungan senyawa ini menunjukkan bahwa batang dan daun talas berpotensi sebagai larvasida. Pada uji pendahuluan perhitungan nilai profit diperoleh persamaan regresi linier, peroleh hasil prediksi nilai LC 50 sebesar 83 ppm merupakan kemampuan konsentrasi dari ekstrak batang yang mampu membunuh 50 % larva uji dan 61,75 ppm merupakan konsentrasi dari ekstrak daun yang mampu membunuh larva uji dalam hal ini adalah larva nyamuk stadium III. Berdasarkan hasil tersebut, bahwa ekstrak daun talas mempunyai kemampuan yang lebih kuat dalam membunuh 50 % larva  uji daripada ekstrak batang talas.Kata Kunci: larvasida, antinutritrion,metabolite secondar
ANALISIS VEGETASI GULMA PADA PERTANAMAN JAGUNG DAN HUBUNGANNYA DENGAN PENGENDALIAN GULMA DI LAMBUNG BUKIT, PADANG, SUMATERA BARAT
Get PDFThe Vegetation Analysis of Weeds in Corn (Zea mays L.) Plantation and Its Conjunction with Weed Control in Lambung Bukit, Padang, West Sumatra        Research about the vegetation analysis of weeds in corn (Zea mays L.) plantation and its conjunction with weed control in Kelurahan Lambung Bukit, Padang, West Sumatra had been conducted from March to Juny 2011 by using systematic squares method of 10 total plots with size 1x1 m2. It was found consist of 10 families, 15 genera,16 species and 1892 individuals weeds. Spermacoce alata (Rubiaceae) showed the highest value of Summed Dominance Ratio (23,17%) and the lowest rate of SDR Hedyotis sp., Cyperus cephalotes and Amaranthus sp. (0,65%). The diversity index of the weeds was H'= 1,2005 (moderate). Integrated weed management is a concept that prioritizes natural control by creating environmental conditions that not favorable for the development of weeds and improve the competitiveness of crops against weeds.Keywords: Weeds, corn, composition, structure, control ABSTRAK        Penelitian mengenai analisis vegetasi gulma pada pertanaman jagung dan hubungannya dengan pengendalian gulma di Kelurahan Lambung Bukit, Padang, Sumatera Barat telah dilaksanakan dari bulan Maret sampai Juni 2011. Penelitian dilakukan dengan menggunakan Metode Kuadrat sebanyak 10 plot dengan ukuran 1x1 m2. Pada penelitian ini didapatkan 10 famili, 15 genus, 16 jenis, dan 1892 individu gulma. Gulma yang memiliki nilai SDR tertinggi yaitu gulma jenis Spermacoce alata famili (Rubiaceae) dengan nilai Summed Dominance Ratio (SDR)  23,17 % dan nilai SDR terendah Hedyotis sp., Cyperus cephalotes dan Amaranthus sp. (0,65%). Nilai indeks dari keanekaragaman jenis gulma berada pada nilai H’ = 1,2005 (sedang). Pengelolaan gulma terpadu merupakan konsep yang mengutamakan pengendalian secara alami dengan menciptakan keadaan lingkungan yang tidak menguntungkan bagi perkembangan gulma dan meningkatkan daya saing tanaman terhadap gulmaKata Kunci: Gulma, Jagung, Komposisi, Struktur, Pengendalia
PEMANFAATAN LIMBAH PRODUKSI KAKAO UNTUK PAKAN BENIH IKAN NILA (Oreochromis niloticus)
Get PDFUtilization of Waste Production of Cocoa for Tilapia Fish (Oreochromis niloticus) Seed Feed          Problems often arise in fish farming is the cost of artificial feed (pellets) which is expensive. The availability of local feed ingredients are still very limited and reliance on imports causing feed prices to rise. Therefore we need research to find alternative raw materials that can substitute fish meal price is relatively cheaper, widely available, and do not compete with cattle and human needs. Raw materials include cocoa shell waste derived from cocoa plantations. This study aimed to evaluate the use of cocoa shell waste for growing out of  tilapia fish (Oreochromis niloticus). The study was conducted at the Center for Research and Development of Freshwater Aquaculture, Bogor. When the study will be conducted over two months. The fish used were tilapia fish 7-8 cm size were maintained on media aquarium measuring 50 × 40 × 40 cm. In addition, the feed given that the result of the fortification of rind cocoa powder, cocoa seed shell powder, rice bran, tapioca flour, water and salt. Commercial feed was also used in this study as a comparison. Feed given as much as 3% of the total biomass of fish in each aquarium. Every two weeks the data  collection of body length and weight of fish seeds were measured. The data would be observed that the length and absolute weight, specific growth rate (SGR), increase biomass and fish survival rate. The results of this study indicated that tilapia fish fed the formulation of cocoa waste could not achieve the growth of fish with commercial feed. Further studies on cocoa waste hopely be better to produce fish seeds which same growth with the growth of fish fed by commercial feed.Key words: Feed, waste of cocoa, tilapia, Oreochromis niloticus ABSTRAK        Permasalahan yang sering muncul pada usaha budidaya ikan yaitu biaya pakan buatan (pellet).yang mahal. Ketersediaan bahan baku pakan lokal masih sangat terbatas dan ketergantungan pada impor menyebabkan harga pakan meningkat. Oleh karena itu diperlukan penelitian untuk mencari alternatif bahan baku yang dapat menjadi substitusi tepung ikan dengan harga yang relatif murah, banyak tersedia, dan tidak bersaing dengan kebutuhan ternak dan manusia. Bahan baku tersebut antara lain limbah kulit kakao yang berasal dari perkebunan kakao. Penelitian ini bertujuan untuk mengevaluasi pemanfaatan limbah kulit kakao untuk pembesaran benih ikan nila (Oreochromis niloticus). Penelitian dilakukan di Balai Penelitian dan Pengembangan Budidaya Air Tawar, Bogor. Waktu penelitian akan dilaksanakan selama 2 bulan. Ikan yang digunakan yaitu benih ikan nila ukuran 7-8 cm yang dipelihara pada media akuarium berukuran 50 × 40 × 40 cm. Selain itu, pakan yang diberikan yaitu hasil fortifikasi dari serbuk kulit buah kakao, serbuk kulit biji kakao, dedak padi, tepung tapioka, air, dan garam. Pakan komersil juga digunakan dalam penelitian ini sebagai pembanding. Pakan diberikan sebanyak 3% dari total biomassa ikan pada masing-masing akuarium. Tiap 2 minggu dilakukan pengambilan data panjang dan bobot tubuh benih ikan yang diuji. Data yang akan diamati yaitu pertambahan panjang dan bobot mutlak, laju pertumbuhan spesifik (SGR), pertambahan biomass, dan sintasan ikan uji. Hasil penelitian ini menunjukkan bahwa benih ikan nila yang diberi pakan formulasi dari limbah kakao belum dapat mencapai pertumbuhan yang setara dengan pakan komersial. Perlu penelitian lebih lanjut mengenai formulasi pakan limbah kakao yang lebih baik lagi agar mampu menghasilkan pertumbuhan benih ikan yang seimbang dengan pertumbuhan ikan yang diberi pakan komersial.Kata Kunci: Pakan, Limbah kakao, Nila, Oreochromis niloticu
SERANGAN HAMA DEFOLIATOR PADA POLA TANAM MONOKULTUR DAN AGROFORESTRI JABON
Get PDFDefoliator Pest Attack on Monoculture and Agroforestry Planting Patterns of Jabon       Jabon (Anthocephalus spp.) is one of the local plant species in Indonesia that have the potential to be developed in forest plantation as well as for other purposes, such as mined-land reclamation, reforestation and tree shade, because growth is very fast, the ability adaptation on various site conditions and silvicultural treatment is relatively easy. This species is also expected to become increasingly important to the timber industry in the future, especially when the raw material for construction timber from natural forests is to be on the wane. This plant has long time cultivated by society in almost all parts of Indonesia either by monoculture and mixture such as agroforestry. One of the obstacles of this type is their defoliator pests. This study aimed to identify the type of pest defoliator which attacking red Jabon (A. macrophyllus Roxb. Havil) and white Jabon (A. cadamba Miq.) 8 months aged were planted in monoculture or agroforestry (paddy-rice plants). The study was conducted on August to December 2014 in Sumber Mekar Mukti and Sukatani Village, Tanjung Lago Subdistrict, Banyuasin County, South Sumatera Province. The results showed that the types of pests that attack plant red Jabon was Moduza procris Cramer (Lepidoptera: Nymphalidae) with an attack percentage of 45.5%. While on the plant, namely white Jabon was Arthroschista hilaralis Walk with an attack percentage of 86%. As for the pattern of agroforestry between red Jabon, white Jabon and rice found only pests of A. hilaralis with an attack percentage of 5%. This shows that agroforestry cropping pattern could suppress pest attack in the plant of Jabon.Key words: pest, red Jabon, white Jabon  ABSTRAK        Jabon (Anthocephalus spp.) merupakan salah satu jenis tumbuhan lokal Indonesia yang berpotensi untuk dikembangkan dalam pembangunan hutan tanaman maupun untuk tujuan lainnya, seperti reklamasi lahan bekas tambang, penghijauan dan pohon peneduh, karena pertumbuhannya yang sangat cepat, kemampuan beradaptasinya pada berbagai kondisi tempat tumbuh, serta perlakuan silvikulturnya yang relatif mudah. Jenis ini juga diharapkan menjadi semakin penting bagi industri perkayuan di masa mendatang, terutama ketika bahan baku kayu pertukangan dari hutan alam diperkirakan akan semakin berkurang. Tanaman ini sudah lama dibudidayakan masyarakat hampir di seluruh wilayah Indonesia baik dengan pola tanam monokultur maupun campuran seperti agroforestri. Salah satu kendala dalam budidaya jenis ini yaitu adanya serangan hama defoliator. Penelitian ini bertujuan untuk mengidentifikasi jenis hama defoliator yang menyerang tegakan jabon merah (A. macrophyllus Roxb. Havil) dan jabon putih (A. cadamba Miq.) umur 8 bulan yang ditanam secara monokultur maupun agroforestri (dengan tanaman padi). Penelitian dilakukan pada Bulan Agustus sampai Desember 2014 di Desa Sumber Mekar Mukti dan Desa Sukatani, Kecamatan Tanjung Lago, Kabupaten Banyuasin, Provinsi Sumatera Selatan. Hasil penelitian menunjukkan bahwa jenis hama defoliator yang menyerang tegakan jabon merah yaitu Moduza procris Cramer (Lepidoptera : Nymphalidae) dengan persentase serangan sebesar 45,5%. Sedangkan pada tegakan jabon putih yaitu Arthroschista hilaralis Walk dengan persentase serangan sebesar 86%. Adapun pada pola agroforestri antara jabon merah, jabon putih dan padi hanya dijumpai serangan hama A. hilaralis dengan persentase serangan sebesar 5%. Hal ini menunjukkan bahwa pola tanam agroforestri mampu menekan serangan hama pada tegakan jabon.Kata kunci : hama, jabon merah, jabon puti
PEMANFAATAN LIMBAH CANGKANG TELUR SEBAGAI BIOSORBEN UNTUK ADSORPSI LOGAM Pb Dan Cd
Get PDFWaste Utilization of Eggs Shell as an Adsorbent for Adsorption of Metal, Pb and Cd       Egg shell waste is one of waste that not be fully utilized. Eggshell can be used as a biosorbent substance because its contain a high CaCO3 and has a natural pore structure. Eggshell waste biosorbent potentially used as an alternative to adsorp heavy metal waste that pollute much in the environment. The purpose of the study was to use the waste to become biosorbent and to investigate its potential in adsorption Pb and Cd. Research methodology were producing biosorbent and getting optimum-sorption condition. They were contact time, biosorbent weights, and the concentration of Pb and Cd. Measurement of the concentration of Pb and Cd before and after sorption processes using instrument of Atomic Absorption Spectrophotometer (AAS) Agilent 240FS type AA. The results showed that eggshell biosorbent could adsorb heavy metals of Pb 65.99% in concentration of adsorbent of 160 ppm, contact time was 20 minutes, and biosorbent weights of 0.50 g. Adsorption of Cd was 93.16% in concentration of adsorbent was 20 ppm, contact  time  40 minutes, and biosorbent weights 0.25 g.Key words: eggshell biosorbent , Pb, Cd, Atomic Absorbtion Spectrophotometer ABSTRAK        Limbah cangkang telur termasuk salah satu limbah yang belum dimanfaatkan secara maksimal. Cangkang telur dapat dimanfaatkan sebagai zat penjerap yang baik karena mengandung CaCO3 yang tinggi dan memiliki struktur pori-pori alami. Limbah cangkang telur berpotensi digunakan sebagai biosorben alternatif untuk mengadsorpsi limbah logam berat yang banyak mencemari lingkungan yaitu logam berat Pb dan Cd. Tujuan penelitian ini adalah memanfaatkan limbah cangkang telur untuk dijadikan biosorben dan meneliti potensinya dalam adsorpsi logam Pb dan Cd. Tahapan penelitian terdiri atas preparasi dan pembuatan biosorben cangkang telur, dan  optimasi adsorpsi biosorben cangkang telur terhadap logam berat Pb dan Cd. Optimasi adsorpsi meliputi variabel waktu kontak optimum, bobot biosorben optimum, dan konsentrasi adsorbat optimum. Pengukuran konsentrasi logam berat Pb dan Cd sebelum dan setelah proses adsorpsi menggunakan instrumen Atomic Absorption Spectrophotometer (AAS) Agilent tipe 240FS AA. Hasil penelitian menunjukan bahwa biosorben cangkang telur dapat mengadsorpsi logam berat Pb sebesar 65,99% pada kondisi konsentrasi adsorbat 160 ppm, waktu kontak 20 menit, dan berat biosorban sebesar 0,50 gram. Sedangkan untuk logam berat  Cd, persen adsorpsi sebesar 93,16% pada konsentrasi sorbat 20 ppm, waktu kontak 40 menit, dan berat biosorben sebesar 0,25 gram.Kata Kunci: biosorben cangkang telur, Pb, Cd, Atomic Absorption spectrophotometer