Aninda Puari

• Andalas University

Introduction Recently, abundant agricultural solid waste has been utilized as sustainable biosorbents for removing heavy metals from aqueous solutions. However, the influence of the carbonization parameters on the specified biosorbent performance has not been well discussed. In this study, we developed the removal efficiency (RE) of Exhausted Kahwa...

Biochar derived from agro industrial waste is being recognized as a promising green adsorbent owing to its abundant availability and cost-effective production. This investigation focused on assessing the adsorption capacity of biochar derived from exhausted coffee husk (ECH) towards copper (II) ions (Cu ²⁺ ). The study analyzed the impact of carbon...

When comparing Lawang to Nagari Tigo Balai, the latter exhibits an attractive appearance on product packaging, which is one of the crucial factors in the marketing strategy of micro, small, and medium enterprises (UMKM). UMKM's issues in the Nagari Tigo Balai area include limited technology and knowledge in redesigning packaging. This Community Ser...

In this study, biochar derived from exhausted coffee husk (ECH) was used as biosorbent for removing Iron (II) from aqueous solution. The aim of this study was to improve the biosorption capacity of the biosorbent from agricultural solid waste and its usability for Fe²⁺ removal. The biosorption performance of ECH biochar was optimized through carbon...

In recent years, various industrial activities have introduced a high concentration of iron in the waterbody which causes serious problem to environment. This paper proposed the application of Exhausted Coffee Husk (ECH) as the biosorbent (BS) for removing iron (Fe) (II) in the aqueous solution. The ECH was carbonized into biochar before performing...

Lubis AS, Efrizal, Syaifullah, Rusnam, Nurmiati, Puari AT. 2023. Growth performance and survival rate of spiny lobster Panulirus homarus (Linnaeus, 1758) with formulated feeding enriched by spinach extract. Biodiversitas 24: 6010-6016. In the context of spiny lobster Panulirus homarus (Linnaeus, 1758) aquaculture and marine conservation, assessing...

Machine learning and internet of thing (IoT) would be the best option for monitoring the appropriate soil pH condition. This research aimed on the design an automatic soil pH control system based on IoT for monitoring the cultivation of Aloe vera plants. The Telegram application was occupied as an IoT platform and was connected to a free and easy a...

The present of nitrogen compounds in the form of ammonium (NH 4 ⁺ ) can contribute to serious pollution problems in surface water and groundwater. Among the most competitive ways, the physical removal method using low-cost biosorbent is considered an effective technique. However, compared to heavy metals and organic, less effort has been dedicated...

Indonesia is recently facing the fertilizer issue as the shortage supply of subsidized fertilizers is aligned with the increasing price of non-subsidized ones. So, it eventually resulted in the unstable price of agricultural commodities. The issue has been becoming an obstacle for farmers practising agricultural cultivation, particularly those in B...

Bio-electrochemical systems (BESs) can recover ammonium at low specific energy inputs and can produce hydrogen gas. A reason hampering development of large-scale applications for ammonium recovery is the general instability of the bio-generated current and the thereby variable TAN (ammonia and ammonium) effluent concentrations. Electrochemical syst...

This study utilised a bio-sorbent from exhausted coffee husk (ECHBS) for the removal of ion Pb2+ from an aqueous solution. Four different activation methods were conducted by chemical activation with KOH, H3PO4, ZnCl2, and without chemical activation. In addition, the influence of process parameters such as heating temperature, heating time and hea...

This study has examined the potential of exhausted kahwa coffee (EKC) as a precursor of activated carbon (AC) to remove the heavy metal ions, Cd ²⁺ and Zn ²⁺ from aqueous solution. The AC was activated by different activation methods using KOH, ZnCl 2 , H 3 PO 4 and without activation agent. The EKC sample was impregnated with the chemical agents w...

Recent studies on agricultural waste as a potential precursor of biochar for heavy metals removal from aqueous solution had not considered exhausted coffee husk (ECH) as the potential one. It is well-known that the carbonization process influences the removal performance of biochar, particularly removal efficiency (RE). However, previous studies ra...

Background: The absence of a corn processing machine is one of the problems experienced by Aur Serumpun farmer groups at Nagari Simpang. Methodology: The team of community services from Andalas University handed over a corn grinder that can be used to process dry corn into animal feed. The corn milling machine delivered is an electric machine with...

Activated carbon (AC) from agricultural waste has become one promising way to produce AC regarding to low price of the precursor and its effect to environment. In this research, the solid waste from the basic biology practical in UPT. Basic and Central Laboratory, Andalas University (Unand) was utilized as the precursor for producing low price AC....