Adsorption of Nickel in Nickel Sulphate Solution (Niso4) by Lapindo Mud

Abstract

This research has been carried out to produce adsorbent from Lapindo mud through various activation process, to adsorb nickel from nickel sulfate solution. Several investigations were performed in this research such as characterization of Lapindo mud before and after activation, effect of physical, chemical and chemico-physical activation to Si/Al ratio and determine the most effective method to produce adsorbent with high adsorption rate. Lapindo mud in this research was prepared through several methods such as without activation, calcination at 500 °C for 3 hours, chemical activation with 6 N HCl under reflux for 6 hours, chemical activation with 6 N NaOH under reflux for 6 hours, chemical activation with 6 N HCl under reflux followed by calcination process and the last treatment is chemical activation with 6 N NaOH under reflux followed by calcination process. The object of this research is the Lapindo mud adsorbent ability to adsorb Ni from NiSO4 solution. While activation methods and nickel concentration in this become independent variable. The reduction of nickel concentration efficiency is determined by the nickel concentration before and after adsorption process. The Si/Al ratio of Lapindo mud before activation process was 3.01 and it increase as the mud is activated. The highest Si/Al ratio was found at activation using HCl which is 7.85. Chemical activation using NaOH was found to be the best method to create the adsorbent with adsorption capacity 98.3%.

Studi Literatur Kemampuan Dan Karakterisasi Adsorben Dari Lumpur Lapindo

“…Dalam proses pembuatan adsoben lumpur Lapindo metode aktivasi fisika dilakukan dengan kalsinasi pada suhu 200 -1000 ⁰C [3,5,6,9] . Sedangkan aktivasi kimia dilakukan dengan perendaman adsorben dalam larutan asam HCL dan H 2 SO 4 atau larutan basa NaOH [5,6,7,9,13,16].…”

“…[13] Ni 98,31% [16] Persamaan ion polisilanol dan merkuri (Hg + dan Hg 2+ ) ditunjukkan di bawah ini:…”

The Promising Potential of Sidoarjo Hot Mud as Additional Material for Concrete Lining Production

“…Lusi is dried in the oven and sieved using a sieve number 200. Sa'diyah et al [30] explained that Lusi contains 70% water and 30% solids; thus, the drying and sieving processes are crucial to reducing the water content and filtering the material.…”

Estimasi temperatur bawah permukaan reservoir Gunung Lumpur Bledug Kuwu (GLBK) Jawa Tengah menggunakan metode Geotermometri

“…Dari hasil penelitian geokimia air asin di GLBK diperoleh kandungan unsur-unsur diantaranya SiO2, Na, K, Mg, Li, dan B yang diduga dipengaruhi oleh aktivitas panas bumi (Rizqiya, 2014;Rohmah, Lalasari, Wahyuadi, & Natasha, 2018). Reservoir panas bumi ini diduga sebagai penyuplai letupan-letupan lumpur hangat yang juga membawa larutan kaya mineral termasuk belerang dan garam dengan konsentrasi tinggi konsentrasinya belerang 62.883 x 102 mg/Kg, dan NaCl 57.15 mg/L (Sa'diyah, Syarwani, & Hadiantoro, 2017;Siregar & Siregar, 2016). GLBK diduga memiliki temperatur yang lebih tinggi dibandingkan dengan temperatur yang keluar di permukaan.…”