Marsi Marsi
Department of Chemical, Engineering Faculty, Sriwijaya Univrsity, Indralaya 30662

Published : 7 Documents
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Characteristics of Composite Rice Straw and Coconut Shell as Biomass Energy Resources (Briquette)(Case study: Muara Telang Village, Banyuasin of South Sumatra) Yerizam, Muhammad; Faizal.M, Faizal.M; Marsi, Marsi; Novia, Novia
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 3 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

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Rice straw and coconut shell as Solid residues are, biomass residue materials that are not optimally used by farmers in Muara Telang and potentially become environmental pollutant. These residues are used as an alternative energy which are biomass briquettes. Post-harvest produced 114 tons yield of rice straw and 80 tons yield of coconut shell. Mostly these residues were burned and produced environmental gas pollutant such as  CO, CO2 and NOx emissions. Rice straw and coconut shell have carbon compound that contained in the fixed carbon (FC), which flammable and became energy resources. Rice straw has 15.61% of FC and coconut shell has 78.32% of FC. Rice straw fuel value is 1525.5 cal/gram while  coconut shell has 7283.5 cal/gram of fuel value. The fuel value of biobriquette in ratio 50:50 is 4354.50 cal / gram. This fuel value close to coal fuel value between 4000 - 8000 cal / gram.
PERUBAHAN JERAPAN P PADA ULTISOL AKIBAT PEMBERIAN CAMPURAN ABU TERBANG BATUBARA-KOTORAN AYAM Hermawan, Agus; Sabaruddin, Sabaruddin; Marsi, Marsi; Hayati, Renih; Warsito, Warsito
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 11, No 1 (2014)
Publisher : Faculty of Agriculture, Sebelas Maret University

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Abstract

Ketersediaan P tanaman yang rendah akibat tingginya jerapan P merupakan kendala utama pada Ultisol. Penelitian ini bertujuan untuk mempelajari pengaruh pemberian campuran abu terbang batubara-kotoran ayam (ATB-KA) terhadap perubahan jerapan dan ketersediaan P pada Ultisol. Perlakuan yang diterapkan pada percobaan ini meliputi dosis ATB-KA dengan komposisi 1:1 (b/b), yaitu 0, 15, 30,45, dan 50 ton ha-1, dan dosis pupuk P yang terdiri dari 0, 87, 174, 261, dan 348 kg P2O5 ha-1. Percobaan dilakukan menurut Rancangan Acak Lengkap Faktorial dengan 3 ulangan. Hasil penelitian ini menunjukkan bahwa dosis ATB-KA, pupuk P, dan interaksi keduanya berpengaruh sangat nyata terhadap nilai titik muatan nol (TMN), pH, dan muatan negatif tanah. Campuran ATB-KA dapat digunakan sebagai amelioran untuk meningkatkan pH tanah dan muatan negatif tanah. Pemberian campuran ATB-KA dosis 30 ton ha-1 dan pupuk P dosis 174 kg P2O5 ha-1 dapat meningkatkan muatan negatif tanah yang lebih baik dibanding kombinasi perlakuan yang lain. Jerapan P minimum (127,07 mg kg-1) dan P-tersedia maksimum (102,21 mg kg-1) diperoleh pada dosis ATB-KA sebesar 42,64 ton ha-1 dan pupuk P dosis 261 kg P2O5 ha-1.
Modifikasi Titik Muatan Nol Tanah Bermuatan Terubahkan melalui Pemberian Campuran Abu Terbang Batubara-Kotoran Ayam Hermawan, Agus; Sabaruddin, Sabaruddin; Marsi, Marsi; Hayati, Renih; Warsito, Warsito
Jurnal Agrista Vol 17, No 3 (2013): Volume 17 Nomor 3 Desember 2013
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Abstract

ABSTRAK. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian campuran abu terbang-kotoran ayam (ATB-KA) terhadap perubahan titik muatan nol (TMN) tanah dan dampaknya terhadap jerapan dan ketersediaan P pada Ultisol. Dua perlakuan yang diuji adalah ATB-KA (w/w 1:1) pada dosis 0, 15, 30, 45 dan 60 ton ha-1, dan pemupukan P pada dosis 0, 87, 174, 261 dan 348 kg P2O5 ha-1.  Perlakuan ini ditata dalam Rancangan Acak Lengkap yang diulang sebanyak tiga kali. Hasil penelitian menunjukkan bahwa aplikasi CATK untuk setiap dosis pemupukan P berkorelasi secara nyata dengan status tanah TMN, pH, muatan negatif, jerapan dan ketersediaan P. TMN berkorelasi positif dengan pH dan muatan negatif. Muatan negatif secara nyata berkorelasi negatif dengan jerapan P, dan berkorelasi positif dengan P tersedia. Modification of PZS of Soil With Variable Charge by Application of Coal Fly Ash-Chicken Manure MixtureABSTRACT. The objective of current research was to study the effect of coal fly ash-chicken manure mixture (FA-CM) on the changes on the soil PZC status and its impact on P sorption and availability in Ultisols. Two treatments - FA-CM mixture (w/w of 1:1) at the rate of 0, 15, 30, 45 and 60 ton ha-1, and P fertilization at the rate of 0, 87, 174, 261 and 348 kg P2O5 ha-1 were tested.  These treatments were arranged according to Factorial Completely Random Design with three replicates. The results showed that the application of FA-CM for each dosages of P fertilizer correlated significantly with the status of soils PZC, pH, negative charge, P sorption and P-available. PZC has possitive correlation with pH and negative charge. Negative charge has a significantly negative correlation with P sorption, and posssitively correlation with P-available.
Karakter Fisik dan Kimia Sumber Air Canal di Lahan Rawa Pasang Surut untuk Budidaya Perikanan Marsi, Marsi; Susanto, Rubiyanto H; Fitrani, Mirna
Jurnal Perikanan Dan kelautan Vol 21, No 2 (2016): Desember 2016
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas Riau

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Tidal lowland is a potential land for aquaculture, however it should be manage intensively in order to give a good and sustainable contribution for society. Tidal fenomenon and rainfall will interacted with water quantity and quality which will used as fish media culture. Fish need optimal water to support its growth and survival. Based on measure and water analysis in two locations, at Mulyasari village, Tanjung Lago District, Banyuasin Regency, South Sumatera, tidal and rainfall gave effect to physical, chemical and biological of water quality and quantity. Related to the change of weather where in the second year (2016) the dry season was longer than rainy season since 2015,the rainfall was only about 200 mm- 310 mm/month. The lower of rainfall effected to the water level in canals and influent the brightness and turbidity, sea intrution that brought salinity about 5-15 ppt in the water.Acidity was also decline about 3.5-5 with ammonia- free reached 0.25 mg/L. Nitrate and nitrite were in common such a natural water condition, yet pyrite oxidized that caused the water and land tobe reddish yellow and looked like greasy in the surface. These condition would be harmfull for fish. The tidal and rainfall was also effect plankton abundance. The data shows that fitoplankton and zooplankton were higher in the canals than in the pond.
Pemanfaatan Sari Timun untuk Mengurangi Tingkat Stres dan Meningkatkan Kelangsungan Hidup Pascalarva Udang Vaname (Litopenaeus vannamei) selama Masa Penurunan Salinitas Taqwa, Ferdinand Hukama; Marsi, Marsi; Haris, S.
Jurnal Lahan Suboptimal Vol 5, No 1 (2016): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Taqwa et al, 2016. The Using of Cucumbar Extract to Reduce the Stress Level and Increase the Survival Rate of White Shrimp Postlarvae (Litopenaeus vannamei) during Salinity Decreasing Time. JLSO 5(1):53-61.The purpose of this study was to evaluate the effect of adding cucumber extract on the level of stress and survival of white shrimp postlarvae during acclimatization. The method used was completely randomized design with five treatment and three replication of adding cucumber extract that equal 15 ppm (T1), 30 ppm (T2), 45 ppm (T3), 60 ppm (T4) and without adding cucumber extract (T0) as a control. The results showed that addition of cucumber extract equivalent to 15 ppm (T1) in diluents media during 96 hours of acclimatization produce survival 91.67%, body fluid glucose levels are lower at 161.67 mg dl-1 and consumption level of oxygen 4.39 mg O2 g-1 h-1. Physical chemistry value of media acclimatization still in tolerance except in ammonia
Utilization of Anadara granosa as a Liming Materials for Swamp Fish Ponds for Pangasius sp Culture Jubaedah, Dade; Marsi, Marsi; Rizki, Rani Ria
Aquacultura Indonesiana Vol 18, No 2 (2017)
Publisher : Indonesian Aquaculture Society (MAI)

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Abstract

Availability of water in swamp areas is abandon almost throughout the year, therefore these areas are potential for aquaculture development. However, the characteristics of swamp water is mainly acid water, therefore, it becomes mayor problems in swamp fish culture development. Liming of ponds is intended to increase pH value of soil and water  of fish ponds. A. granosa shells is one of domestic waste containing of 61.16% CaO and 21.65% MgO, therefore it can be used as an alternative material for liming of fish ponds. The aims of this research was to evaluate the potency of lime derived from A. granosa shells to raise soil’s and water’s pH, and to evaluate its effect to survival and growth of Pangasius sp. The research was conducted and arranged based upon completely randomized design with five treatments and three replications. The treatments used consisted of different dosages of lime, namely : P1) 1 ton/ha; P2) 2 ton/ha; P3) 3 ton/ha; P4) 4 ton/ha and P5) 5 ton/ha of lime equivalent to CaO. The results showed that both the soil and water reach a neutral pH at a dosage of 2 ton/ha (P2), 3 ton/ha (P3), 4 ton/ha and 5 ton/ha. The dosage of 5 ton/ha (P5) was the best treatments among all treatments, with a highest survival rate (100%), absolute growth of fish lenght (9.35 cm) and weight (40.69 g), as well as feed efficiency (110.97%).
The Effect of Organic Liquid Fertilizer Application on Fish Pond’s Water Quality at the Reclaimed Indonesian Tidal Lowland Fitrani, Mirna; Marsi, Marsi; Susanto, Robiyanto H; Dewi, Santa
Aquacultura Indonesiana Vol 17, No 2 (2016)
Publisher : Indonesian Aquaculture Society (MAI)

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Abstract

Organic liquid fertilizer is the source of nutrients.  This fertilizer can be used to improve the water quality.  It is enviromentally friendly  and relatively cheap.  Application of the fertilizer has been done on aquaculture.  At the tidal lowland areas, application of this fertilizer is mostly as soil improvement agent.  It is limited to be used as water quality improvement agent.  Tidal lowland has an acid soil with a low fertility level characters. The objectives of the study are to know the effect of liquid organic fertilizer to the water quality (temperature, pH, dissolved oxigen, ammonia) and to the amount of plankton in the ponds. This research was done at the reclaimed tidal lowland in Banyuasin District of South Sumatera, Indonesia.  The organic liquid fertilizer was made by fermentation of  both animals manures and vegetable waste with the percentage of N : P2O5 : K2O were 0.120 : 0.023 : 0.750.  Water quality data was taken three times in every three days (plankton) from the ponds that was added by liquid fertilizer with dose of 4.35 L /pond (P1) and 8.7 L/pond (P2).  All the water quality data were analyzed qualitatively.  The results show that on treated  ponds pH dropped slightly since the beginning with pH 6.0 and remain 6.4 - 6.8 in the last day.   The value of  Ammonia ranges 0.06-0.15 mg.L-1 and Dissolve oxigen range 1.9-2.5 mg.L-1‑.    Phytoplankton and zooplankton amount increased and reached the peak on day 12 (12033 ind.L-1 and 364 ind.L-1 respectively), and finally turned down slowly.  Therefore, liquid fertilizer addition should be given to the ponds more than once during fish rearing period.  It is  in order to increase the amount of  plankton and to manage the water quality in the reclaimed tidal lowlands ponds