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All Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Nurkhamim
UPN "Veteran" Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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LIMBAH TEMPURUNG KELAPA SEBAGAI ALTERNATIF PENYERAP LOGAM BERAT YANG RAMAH LINGKUNGAN DAN EKONOMIS Mycelia Paradise; Edi nursanto; Nurkhamim
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Coconut shell is one of the waste that has not been used optimally and its availability is abundant. Usually coconut shell used as handicrafts. Several studies shown that coconut shell can be used as activated carbon to adsorb heavy metals from wastewater through the adsorption process. Charcoal made from coconut shell are then activated using heating (physical activation) and using chemical solutions as activators (chemical activation). Chemical solutions usually used as activators are acidic or alkaline solutions such as hydrochloric acid (HCl), sulfuric acid (H2SO4), zinc chloride (ZnCl2), sodium carbonate (Na2CO3), sodium chloride (NaCl), phosphoric acid (H3PO4), and sodium hydroxide (NaOH). Several studies shown that coconut shell activated carbon is able to adsorb heavy metals copper (Cu), iron (Fe), zinc (Zn), lead (Pb), cadmium (Cd), chromium (Cr), and aluminum (Al) with good adsorption capacity Keywords: adsorption, coconut shell activated carbon
Menggali Potensi Energi Baru Terbarukan dari Air Asam Tambang di Danau Bekas Penambangan Batubara Nurkhamim
Retii 2021: Prosiding Seminar Nasional ReTII ke-16
Publisher : Institut Teknologi Nasional Yogyakarta

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Coal mining activities can produce acid mine drainage which is concentrated in ex-mining lakes. In this study, acid mine water was tested from coal mining lakes into new renewable energy in the form of electrical energy. This research was conducted using the Galvanic Cell principle, by varying the copper (Cu), zinc (Zn) and carbon (C) electrodes into 9 pairs of electrodes by combining the C-Zn, Cu-C and Cu-Zn electrode pairs. In the combination of electrodes, testing was carried out at 3 locations of ex-mining lakes with different pH (Pit 1 = 5.1 , Pit 2 = 5.0, Pit 3 = 3.3) producing electrical energy for Pit 1 Cu-Zn = 11 ,5 ml Volts, C-Zn= 29.6 ml Volts, C-Cu = 45.9 ml Volts, Pit 2 Cu-Zn = 17.0 ml Volts, C-Zn= 31.1 ml volts, C-Cu = 48.6 ml Volts and Pit 3 Cu-Zn = 23.3 ml Volts, C-Zn = 47.4 ml Volts, C-Cu = 59.0 ml Volts. Overall, this study succeeded in finding 3 pairs of combinations of Voltaic Cells as new electrodes for producing new renewable energy in the form of potential electrical energy from acid water in the former mining lake. Theoretically, the ability to generate electrical energy is also positively correlated with the ability of the electrodes to store electrical energy as the wet battery principle. Keywords: acid mine drainage, Voltaic cell, electrode
Co-Authors Edi nursanto Mycelia Paradise