Rusnam Rusnam

• Doctor of Philosophy
• Professor at Andalas University

The primary goal of this study was to investigate the biosorption performance of biochar derived from exhausted kahwa coffee (EKC) on removing heavy metal ion, Cd²⁺ in the solution. The operational parameters, for instance pH, dosage and contact time, were varied in a certain range and the efficiency and the capacity of removal were determined. The...

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...

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...

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...

The elimination of heavy metals and organic contaminants, such as phenols, hydrocarbons, and amides, by bioremediation, is the most effective choice for the foreseeable future. This is especially true at low levels, where other methods, such as physical or chemical methods, may not be successful. Each year, a few million tons of these contaminants...

Lettuce is one of the vegetables that are often found and consumed by the people of Indonesia, but the demand for lettuce is always not fulfilled because the low production. Aeroponic system is one of the alternatives to solve this problem, because the aeroponic system has many advantages and does not require a large area of land. The purpose of th...

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...

Pembudidaya ikan pada umumnya mengalami kesulitan dalam menyediakan pakan buatan (pellet) yang berkualitas karena kurangnya pengetahuan dan keterampilan dalam teknologi pengolahan dan pembuatan pakan alternatif. Disamping itu biaya yang dikeluarkan untuk pengadaan pakan relatif besar mencapai 70 – 80 % dari total biaya produksi. Namun penyediaan pa...

Population growth has resulted in many changes in land cover that occurs in the city of Padang. The availability of groundwater which mostly comes from rainfall is an important limiting factor that increased the production of a plant. Limited water availability causes competition for water use in the community both for agricultural activities, resi...

The bacterium Pseudomonas sp. strain Dr Y Kertih is an efficient acrylamide-degrader isolated from hydrocarbon sludge and is able to tolerate high concentrations of acrylamide. Modelling was carried out using several other kinetic models such as Haldane, Andrews Noack, the Web and Yano, Luong, Teissier and Hans-Levenspiel. The statistical analysis...

Waste water is the most frequently found heavy which pose risks to human health and the environment. Various sources of heavy metals including soil erosion, natural weathering of the earth's crust, mining, industrial waste, waste disposal, insect or disease control agents applied to plants, and many others. Remediation on polluted water needs to be...

Groundwater is an opportunity for the irrigation of Paddy fields. A paddy field that is planted only one crop during the rainy season is an obstacle to the lack of rice production in the city of Padang. Meeting the need for rice consumption was sent from various western Sumatra areas. If this happens, again and again, it would threaten food securit...

Obstacle detection sensor is an important development tool of autonomous vehicles in recognizing its environment. Green laser pointer is an example of a sensor in the form of visibe light beam to detect the obstacles that are in the track of the tractor. This research aimed to Determine the variation of green laser beam as an obstacle sensors in di...

IPTEKS berbasis dosen dan masyarakat (IbDM) bertujuan untuk mengaplikasikan atau mendiseminasikan teknologi pakan buatan alternatif untuk pengembangan budidaya ikan gurame intensif dalam upaya meningkatkan produktivitas perikanan dan meningkatkan pengetahuan serta keterampilan petani ikan (masyarakat) di Kelurahan Limau Manis, Kecamatan Pauh, Kota...

The study of the blue swimming crab (Portunus pelagicus) broodstock nutrition is significant for achieving the reproductive success, which implicitly increases the larval quantity and quality in the mass production of cultured species. Therefore, the objective of this work was to determine the effects of the dosage of vitamin E in the diets on the...

Background: Formulated diets made from food waste enriched with amaranth extract largely determine the level of softshell crab production. The study was carried out to analyze the growth performance and survival rate of blue swimming crab Portunus pelagicus (Linnaeus, 1758) broodstock females fed formulated diets with different doses of amaranth ex...

Background and objective: Spinach extract (Amaranthacea tricolor) is a very prospective feed raw materials to stimulate the molting and growth of crab female broodstock. The purpose of this study was to evaluate the quality of broodstock females, Portunus pelagicus (Linnaeus, 1758) at different levels of spinach extract based on physical, organole...

Background: Currently, great progress in the artificial propagation of commercially important portunid crabs of the genus Portunus has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broods...

Background: Currently, great progress in the artificial propagation of commercially important portunid crabs of the genus Portunus has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broods...

Data include time of molting, carapace width and carapace length.

Kegiatan pengabdian kepada masyarakat ini dilakukan dengan tujuan untuk pemanfaatan limbah kangkung air, Ipomoea aquatica Forks, sebagai salah satu bahan baku (material row) pakan buatan alternatif dan meningkatkan pengetahuan serta keterampilan petani ikan (masyarakat) Kelurahan Koto Tangah dalam bidang usaha pembuatan pakan/pelet ikan di Sumatera...

Sodium dodecyl sulphate (SDS) is an anionic surfactant which is mainly utilized in washing detergents and industrial products and solutions. Its toxicity and contamination of the surroundings environment are ubiquitous. In this study, the SDS-degradation capacity of a previously isolated molybdenum-reducing bacterium; Enterobacter sp. Strain Neni-1...

Perubahan penggunaan lahan dari lahan bervegetasi ke non vegetasi mengakibatkan besarnya limpasan (run off) sehingga debit menjadi meningkat terutama pada musim hujan. Penelitian ini dilakukan untuk menganalisis debit pada DAS Air Dingin menggunakan model SWAT dan apakah model SWAT dapat diterapkan dalam mempresentasikan debit pada DAS Air Dingin....

This research aims to observe the concentration of the heavy metal Plumbum (Pb) absorbed by spinach (Amaranthus sp) grown in water containing Plumbum at the standard limitation of water quality (1 ppm) and the effect of this on the quality of spinach. Contamination occurs continually from the seed stage until harvesting after 40 days. The concentra...

A molybdenum reducing bacterium with the novel ability to decolorise the azo dye Metanil Yellow is reported. Optimal conditions for molybdenum reduction were pH 6.3 and at 34°C. Glucose was the best electron donor. Another requirement includes a narrow phosphate concentration between 2.5 and 7.5 mM. A time profile of Mo-blue production shows a lag...

Toxicants removal through microorganism’s action is intensely being sought due to economic reasons. The aim of this paper is to isolate a bacterium that is able to reduce molybdenum blue and at the same time can grow on the detergent Sodium Dodecyl Sulfate (SDS). Biochemical analysis resulted in a tentative identification of the bacterium as Entero...

Heavy metals and organic xenobiotics including dyes are important industrial components with their usage amounting to the millions of tonnes yearly. Their presence in the environment is a serious pollution issue globally. Bioremediation of these pollutants using microbes with multiple detoxification capacity is constantly being sought. In this work...

Heavy metals and organic xenobiotics including dyes are important industrial components with their usage amounting to the millions of tonnes yearly. Their presence in the environment is a serious pollution issue globally. Bioremediation of these pollutants using microbes with multiple detoxification capacity is constantly being sought. In this work...

A molybdenum-reducing bacterium isolated from contaminated soil was able to utilize acrylamide as the electron donor source, and was able utilize acrylamide, acetamide and propionamide for growth. Reduction was optimal at pH between 6.0 to 6.3, at temperatures of between 30 and 37 oC, glucose as the electron donor, phosphate at 5.0 mM, and sodium m...

Water pollution by heavy metals such as mercury (Hg), lead, cadmium, cobalt, zinc, arsenic, iron, copper and other compounds, originally spread in small concentrations. But in the next process, it will experience an accumulation or concentration so that at certain concentrations, it can cause the negative impact on the environment. The results from...

Penelitian ini dilakukan pada bulan Agustus dan September 2013 di Sub-DAS Batang Kandis didistrik Koto Tangah Kota Padang dan juga di AMGIS (Sistem Informasi Manajemen PertanianGeographic) Laboratory. Penelitian ini bertujuan untuk menghitung laju erosi dan menentukantingkat bahaya erosi dan mengatur arahan konservasi tanah dan konservasi tanah unt...

Research was conducted in July – September 2012, mercury analysis performed in Environmental Engineering of Engineering Faculty, Andalas University. Levels of mercury that are permitted by Government Regulation Republic Indonesia No. 82 of 2001, fourth grade for water quality is 0.005 mg/l. There mercury content of 0.020169 mg/l in irrigated areas...

Methods of assessing soil nutrients under field condition are being developed worldwide. The concept of rapid assessment of soil nutrients is set to be used for precision farming in order to overcome the problems of delay in laboratory soil analysis and soil remedial action. The VerisEC 3100 sensor was introduced to rapidly measure bulk electrical...

The objective of this community service is to transfer knowledge and skill to farmers how to manage water use effectively for paddy field, how to make compost using local materials from agricultural residues such as rice straw, sawdust and livestock manures. Community service was conducted by lecture and practice regarding effective water use effec...