The effect of CaO doping in activated carbon composite as a heavy metal adsorbent in water

Abstract

Lead (Pb) is a dangerous heavy metal that can settle in marine animals, and it will have a bad impact on our health. One of the efforts to reduce the stream’s levels of hazardous metals is by using the adsorption method. This study aimed to determine the effect of CaO doping on activated carbon composites on the physical properties of water and its ability to absorb Pb. Atomic Absorption Spectroscopy was conducted to determine the remaining Pb content after the adsorption process. Based on the results, it was found that the doping of CaO in activated carbon composites affected the physical properties of water-based on parameters of pH, EC, TDS, temperature, and turbidity. The water quality test results have met the PerMenKes standard No: 416/MENKES/PER/IX/1990, with the water quality obtained having a pH value of 7, EC 313.00 µs/cm, TDS 156.50 ppm, temperature 29 , and turbidity 3.95 NTU. Besides that, the addition of CaO mass to activated carbon composites affects Pb metal’s adsorption ability, where CaO doping can increase the absorption of Pb.

Characteristics of Calcium Oxide from Pearl Shells (Pinctada Maxima) based on Calcination Te

“…From the results of research on the processing of clam shells , p. maxima produces green catalysts that are alkaline, heterogeneous, and environmentally friendly. The CaO content obtained from this natural material reaches 98.05% [1], [4]. In addition, CaO has the ability as an adsorbent for Fe metal and is able to increase PH levels in water [4].…”

“…The CaO content obtained from this natural material reaches 98.05% [1], [4]. In addition, CaO has the ability as an adsorbent for Fe metal and is able to increase PH levels in water [4]. With the high content of CaO in the shells of p.This maxima will potentially increase the PH value of the water.…”

“…The research on the typical characteristics of CaO capable of being used as an adsorbent for heavy metal Pb was almost 100% carried out. The source of CaO used is blood clam shells [4]. In addition, the extraction of CaO from egg shells has been successfully carried out.…”

Comparative study of solvothermal and catalytic solvothermal carbonization of rice husk for Fe(iii), Zn(ii), Cu(ii), Pb(ii) and Mn(ii) adsorption, kinetics, surface chemistry and reaction mechanism

“…These inorganic compounds often exist in biomass-derived adsorbents such as biochar, hydrochar, and activated carbon and act as heterogeneous catalysts for higher amounts of heavy metal ion adsorption. 57,58 High crystallinity refers to the presence of various inorganic compounds such as silica, graphite, calcite, mineral crystals, e.g., periclase, sylvite (KCl), whitlockite ((Ca, Mg) 3 (PO 4 ) 2 ) and others. 54 RIK presented narrow and sharp peaks of long-range carbon, and exhibited high crystallinity, which is not favorable for porosity.…”