Abstract
Litter mangrove contains elements lignin-selulosa that can be adsorb heavy metal so that it can be modified into biosorben. Batik industry an industry that potentially produce waste containing heavy metal so that it can be caused damage environment .One of a breed of metal the polluter high priority found in sewage batik industry is lead. The purpose of this research to make use of litter mangrove as biosorben adsorption metal lead and applied on waste batik industry to adsorption metal lead . The condition steady adsorption lead by biosorben litter mangrove happened to pH 3 , contact time 30 minutes and weights biosorben 0.5 gram. Litter mangrove can be used as biosorben capable of absorbing metal lead of batik industry with capacity adsorption 0,6025 µg / g with efficiency adsorption 100 %. Isoterm adsoprsi lead by biosorben litter mangrove following a pattern isoterm freundlich assuming that happens adsorption physics form a multilayer worth regression 0,9213 but type isoterm langmuir having value regression less similar namely 0,9114.
Highlights
Serasah mangrove mengandung unsur lignin-selulosa yang dapat mengadsorpsi logam berat sehingga dapat dimodifikasi menjadi biosorben
The results showed that mangrove litter could be used as biosorbent which was able to absorb lead metal from the batik industry with an adsorption capacity of 0.6025 μg / g with 100% adsorption efficiency
Isoterm adsoprsi timbal oleh biosorben serasah mangrove mengikuti pola Isoterm Freundlich dengan asumsi bahwa terjadi adsorpsi fisika yang membentuk lapisan multilayer dengan nilai regresi 0,9213, akan tetapi tipe Isoterm Langmuir memiliki nilai regresi yang tidak terlalu berbeda jauh yaitu 0,9114
Summary
Timbal 100 mg/L dipipet 10, 8, 6, 4, 2 mL kemudian dimasukkan ke dalam labu ukur 100 mL ditepatkan dengan asam nitrat 0,05 N sehingga dihasilkan larutan standar timbal dengan konsentrasi 10, 8, 6, 4, 2 mg/L. Campuran diaduk selama 15 menit dengan kecepatan 100 rpm, kemudian disaring dan diukur dengan spektrofotometer serapan atom. Sebanyak 0,5 gram biosorben dimasukkan masing-masing ke dalam 50 mL timbal 10 mg/L, kemudian larutan diaduk dengan kecepatan 100 rpm. Setelah itu campuran disaring dan absorbansi filtratnya diukur dengan spektrofotometer serapan atom. Erlenmeyer yang berisi bobot optimum biosorben dimasukkan masing-masing 25 mL larutan timbal dengan konsentrasi 10; 20; 40; 60; 80; dan 100 mg/L pada kondisi pH dan diaduk pada waktu kontak optimum setelah itu campuran disaring dan absorbansinya diukur dengan spektrofotometer serapan atom. Hasil yang didapatkan kemudian ditentukan penentuan pola pada kurva Isoterm Langmuir dan Freundlich
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