Aqueous crystallization of monocalcium phosphate monohydrate with green mussel shells (Verna Piridis) for calcium sources

2021 ◽  
pp. 106913
Author(s):  
A. Prihanto ◽  
D.F. Fitriyana ◽  
S. Muryanto ◽  
I. Masykur ◽  
R. Ismail ◽  
...  
Keyword(s):  
Monocalcium Phosphate ◽  
Green Mussel ◽  
Calcium Sources ◽  
Mussel Shells ◽  
Aqueous Crystallization

scholarly journals Mechanism of Coagulation Using Chitosan from Mytilus Virdis Linneaus Shells in Water Treatment

2018 ◽  
Author(s):  
sinardi ◽  
Prayatni Soewondo ◽  
Suprihanto Notodarmojo ◽  
cynthia radiman
Keyword(s):  
Water Treatment ◽  
Inorganic Compounds ◽  
Drinking Water Treatment ◽  
Turbid Water ◽  
Degree Of Deacetylation ◽  
Green Mussel ◽  
Environment And Health ◽  
Residual Aluminum ◽  
Mussel Shells ◽  
Flocculation Process

Green mussel (Mytilus viridis Linnaeus) is one of the shells from marine source that can be used as chitosan. On the other side of drinking water treatment using synthetic coagulant such us aluminum sulphate (Al2 (SO4)3) concerns about the residual aluminum in the water that contains inorganic compounds are carcinogenic so it is necessary to do research about potential use of chitosan as a coagulant. This study conducted on laboratory-scale use of chitosan from green mussel shells as a coagulant in coagulation-flocculation process using turbid water from Tirtawening in Bandung City, Indonesia. The purpose of this study was to determine the mechanism of coagulation-flocculation process based on the characteristics of chitosan. Preparation of chitosan with deproteination process done using a solution of NaOH 3.5% 10: 1 (v: w), stirring 2 hours 65oC. Demineralization process using a solution of HCl 1 N 15: 1 (v: w), stirring 30 minutes 50 °C. Deacetylation process using a solution NaOH 60% 20:1 (v: w) stirred 60 minutes 120oC produce chitosan with degree of deacetylation about 77.8% and molecular mass about 4,26x104 g / mol. The degree of deacetylation of chitosan effect ability formation of flock and the molecules of mass of chitosan effect in binding colloids in turbid water into one and form a flock large. The results concluded that chitosan from green mussel shells can be used as a coagulant for turbidity removal in water treatment and use it safe for the environment and health because from natural compounds and biodegradable.

scholarly journals Penerapan Teknologi Pengolahan Limbah Cangkang Kerang Hijau sebagai Pakan Ternak dan Ikan

2021 ◽  
Vol 9 (2) ◽  
pp. 169-177
Author(s):  
Kartono Kartono ◽  
Mukarto Siswoyo ◽  
Bukhori Bukhori
Keyword(s):  
Action Research ◽  
Community Participation ◽  
Animal Feed ◽  
Fish Feed ◽  
Hammer Mill ◽  
Mussel Shell ◽  
Community Based ◽  
Green Mussel ◽  
Shell Waste ◽  
Mussel Shells

Abstract. Environmental problems in Muara Village, Suranenggala Subdistrict,Cirebon Regency, are accumulated waste of green mussel shells. The objectives ofthis PKM activity are: 1) to deal with the accumulation of green mussel shells asfeed ingredients / fish pelets by applying technology, namely; hammer millmachines, mixer machines, pelet extruders, and 2) to improve the welfare of thecommunity from the activities of making fish feed / pelets. The method used isParticiparoty Action Rural (PRA) which is one of the Participaroty Action Researchmethods. This method prioritizes community participation, identifying problems,compiling programs to plan solutions together. The location of the activity wascarried out in the fishermen group in Muara Village, Suranenggala District,Cirebon Regency. The results of the application of technology for the process ofmaking animal feed carried out in Muara Village can create new businesses forcommunity groups, especially fishermen groups, so that it has implications forincreasing welfare for the surrounding community. Based on the results ofmonitoring and evaluation, it is concluded that the application of appropriatetechnology in overcoming the accumulation of green mussel shell waste can create anew business, namely UKM making fish feed / pelets which in turn can improvewelfare for the community.Keywords: SMEs, appropriate technologyAbstrak. Permasalahan lingkungan di Desa Muara Kecamatan SuranenggalaKabupaten Cirebon adalah menumpuknya limbah cangkang kerang hijau. Tujuandari kegiatan PKM ini adalah 1) untuk menanggulangi menumpuknya limbahcangkang kerang hijau sebagai bahan pakan/pelet ikan dengan penerapanteknologi, yaitu mesin hammer mill, mesin mixer, pelet extruder; dan 2) untukmeningkatkan kesejahteraan masyarakat dari kegiatan pembuatan pakan/pelet ikan.Metode yang digunakan adalah Participaroty Action Research (PAR). Metode inimengutamakan partisipasi masyarakat, mengidentifikasi masalah, dan menyusunprogram merencanakan solusi bersama-sama. Lokasi kegiatan dilaksanakan padakelompok nelayan di Desa Muara, Kecamatan Suranenggala, Kabupaten Cirebon.Hasil dari penerapan teknologi untuk proses pembuatan pakan ternak yangdilakukan di Desa Muara dapat memunculkan usaha baru bagi kelompokmasyarakat, khususnya kelompok nelayan sehingga dapat berimplikasi terhadapmeingkatnya kesejahteraan bagi masyarakat sekitar. Berdasarkan hasil monitoringdan evaluasi disimpulkan bahwa penerapan teknologi tepat guna dalammenanggulangi menumpuknya limbah cangkang kerang hijau dapat menciptakanusaha baru, yaitu UKM pembuatan pakan/pelet ikan yang pada akhirnya dapatmeningkatkan kesejahteraan bagi masyarakat.Kata Kunci: UKM, Teknologi tepat guna

Synthesis of Hydroxyapatite from Indonesian Green Mussels (Perna viridis) via Precipitation Methods

2020 ◽  
Vol 833 ◽  
pp. 199-203
Author(s):  
Agung Shamsuddin Saragih ◽  
Amin Pamungkas ◽  
Alfian Noviyanto
Keyword(s):  
Functional Group ◽  
Calcium Content ◽  
Precipitation Method ◽  
Precipitation Process ◽  
Perna Viridis ◽  
X Ray ◽  
Green Mussel ◽  
Good Potential ◽  
Mussel Shells ◽  
The Fourier Transform

Based on the X-Ray Fluorescence test it was identified that the calcium content in green mussel shells was very high with concentration about 93.83%. The calcium is the main constituent of hydroxyapatite besides phosphorus, so the purpose of this study is to identify a very good potential for synthesized hydroxyapatite from green mussel shells, which is considered the waste of shells that cause environmental pollution. Hydroxyapatite synthesized from green mussels using precipitation method, calcium from green was reacted with phosphate obtained from phosphoric acid. The Fourier transform infrared spectrum show that the functional group in powder is a functional group of hydroxyapatites. The FTIR chart of shellfish hydroxyapatite soaked in acetone and after the precipitation process is heated again to 900°C is the most similar graph to the FTIR commercial HA graph. The results of the X-Ray Diffraction test also prove that the clam shell with this treatment has a diffraction pattern resembling standard hydroxyapatite.

The Effect of Hydrothermal Holding Time on The Characterization of Hydroxyapatite Synthesized from Green Mussel Shells

2021 ◽  
Vol 80 (1) ◽  
pp. 84-93
Author(s):  
Rifky Ismail ◽  
Muhammad Bagus Laroybafih ◽  
Deni Fajar Fitriyana ◽  
Sri Nugroho ◽  
Yanuar Iman Santoso ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Hydrothermal Reaction ◽  
Holding Time ◽  
Hydroxyapatite Nanoparticles ◽  
Precipitated Calcium Carbonate ◽  
Green Mussel ◽  
Mussel Shells ◽  
Xrd Patterns ◽  
Hydroxyapatite Crystals

Hydroxyapatite is generally utilized in medical fields especially as a substitute to bone and teeth. Hydroxyapatite nanoparticles have been succesfully synthesized from green mussel shells as a source of calcium carbonate by hydrothermal method. The green mussel shells were calcined, hydrated, and undergone carbonation to form Precipitated Calcium Carbonate (PCC). The PCC of shells was then added with (NH4)2HPO4 with the mole ratio of Ca/P = 1.67. Hydrothermal reaction was carried out at 160oC with variations of the holding time (14, 16, and 18 hrs). The formation of hydroxyapatite was characterized using XRD and SEM-EDX. The XRD patterns showed that the products were hydroxyapatite crystals. The morphology of hydroxyapatite observed using SEM showed that the crystal uniformity of hydroxyapatite. The best result was obtained at 18 hrs holding time of hydrothermal because the hydroxyapatite produced has the highest purity without any impurities phase.

scholarly journals POTASSIUM CHLORIDE IMPREGNATED ON ACTIVATED GREEN MUSSEL SHELLS (KCL/ AGMS): AN ACTIVE CATALYST TOWARDS KNOEVENAGEL CONDENSATION

2019 ◽  
Vol 81 (4) ◽  
Author(s):  
Bayu Ardiansah ◽  
Ridla Bakri ◽  
Yudis Ananda Putra
Keyword(s):  
Knoevenagel Condensation ◽  
Aromatic Aldehydes ◽  
Cost Effective ◽  
Impregnation Method ◽  
Green Catalyst ◽  
Green Mussel ◽  
Bond Forming ◽  
Basic Catalysts ◽  
Mussel Shells ◽  
Homogeneous Acid

Knoevenagel condensation represents one of the most important C-C bond forming reactions in organic chemistry. The typical reaction was carried out commonly in the presence of homogeneous acid as well as basic catalysts. With the problems like corrosive and high catalyst amount, the search for a new heterogeneous catalyst is an attractive research topic in this area. KCl supported on activated green mussel shell (KCl/AGMS) was prepared by impregnation method and characterized by some analytical instrumentations (IR, XRD, SEM, EDAX). The prepared materials shows an incredible catalytic ability in Knoevenagel condensation of ethyl acetoacetate with aromatic aldehydes to produce condensed products 3a-3d in medium to good yields (60-94%). The findings disclose a mild route for the synthesis of Knoevenagel products using a cost-effective and green catalyst.

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