Juferi Idris

Universiti Teknologi MARA | UiTM · Faculty of Chemical Engineering

Sufficient supply of nutrients is essential for optimum oil palm seedlings growth especially at poor fertile soils Improving nutrient use efficiency is very important to reduce the reliance on excessive use of chemical fertilizers and overcome the harmful impacts to the environment. The objective of this study was to determine the soil chemical pro...

The effect of the interaction factor between pH and dosage is important in leachate wastewater treatment. This study aims to remove leachate pollutants such as turbidity, TSS, COD, and color using simultaneous factors of plant‐based Tacca leontopetaloides biopolymer flocculant (TBPF) dosage and leachate pH. The flocculation process was carried out...

Pollution in river water affects human, plant and animal health and activities, and its removal using chemical coagulants is a huge concern. This study aims to reduce turbidity and COD pollutants in river water through coagulation-adsorption process by using Tacca leontopetaloides biopolymer flocculant (TBPF) and powder activated carbon (PAC). In c...

The coconut industry generates a relatively large amount of coconut shell and husk biomass, which can be utilized for industrial and environmental purposes. Immense potential for added value when coconut shell and husk biomass are turned into biochar and limited studies are available, making this review paper significant. This paper specifically pr...

The discharge of leachate poses a serious risk to both surface water and groundwater from landfills. As rainwater and moisture seep through waste in landfills, it will release leachate which is high in concentration of organic matter and ammonium nitrogen. Adsorption process using activated carbon was used as one of the tertiary treatment processes...

In this study, based on the surface morphology study, it was found that the texture of the treated biosorbent has changed from smooth to dry and rough texture. It shows that the surface has been leached out during the biosorption process. The composition of Pb ²⁺ and Al ³⁺ ion metals was removed and determined using a biosorbent, red seaweed, Kappa...

Bamboo is a fast-growing biomaterial indigenous to Asia and Oceania that is also a high-yielding renewable resource. Bamboo, which has mechanical properties similar to wood, may be treated with currently available methods. The purpose of this study was to determine the characteristics chemical and thermal characteristic of three bamboo species of S...

The present study aimed to remove lead ions (Pb²⁺) in a single synthetic solution by employing a plant-based Tacca leontopetaloides biopolymer flocculant (TBPF). The ions were eliminated through the flocculation process via the Jar test experiment. The maximum Pb²⁺ removal was determined based on one-factor-at-a-time (OFAT) and central composite de...

Biosorbent from a plant-based material with characterized properties is important to remove heavy metals hence reduce the impact on humans and aquatic life. This study proposes to remove Pb(II) in a synthetic aqueous solution using characterized plant-based raw Leucaena leucocephala pod (LLP) via adsorption experiment. The effects of pH synthetic a...

The reason for such enormous efforts in palm oil mill effluent research would be what has been singled out as one of the major sources of pollution in Malaysia, and perhaps the most costly and complex waste to manage. Palm oil mill final discharge, which is the treated effluent, will usually be discharged to nearby land or river since it has been t...

Biochar produced from biomass with high nutrient content is essential for improving the quality of agricultural soils. An abundance of biomass is converted into biochar with high nutrient content, but studies on the conversion of pineapple and sago waste into biochar are still limited. This research aimed to produce biochar from pineapple leaf (PLB...

High removal of heavy metals using plant-based bioflocculant under low concentration is required due to its low cost, abundant source, and nontoxicity for improved wastewater management and utilization in the water industry. This paper presents a treatment of synthetic wastewater using plant-based Tacca leontopetaloides biopolymer flocculant (TBPF)...

Wastewater treatment is crucial to ensure a sustainable supply of clean water, especially for human use. Natural flocculants can overcome the disadvantages of chemical flocculants in wastewater treatment. This study proposes a new natural-based flocculant from the Tacca leontopetaloides plant for leachate treatment. The plant tuber was processed th...

In this work, the efficiency of Leucaena leucocephala pods, an agricultural waste, to remove copper (Cu) ions in aqueous solution by adsorption. Batch mode experiments were carried out at 30 ◦C to study the influence of pH, contact time (t) and dosage on the adsorption of Cu by Leucaena leucocephala pods. The surface behaviour and the composition o...

Adsorption processes are widely used by many researchers for the removal of heavy metals from waste streams. Oil palm decanter cake (OPDC) was chosen as a bioadsorbent due to its compositional properties for activated carbon production as well as it is abundant, cheap and readily available raw material produced from palm oil mill. In this study, th...

The treatment of nitrate and phosphate ions in fresh water such as streams, rivers, lakes, reservoirs, and wetlands through biological treatment has been getting more crucial and popular in recent years. This paper reports the reduction of nitrate and phosphate ions in modified low salinity fresh water via the cultivation of a microalgae strain, e....

A one-step self-sustained carbonization of coconut shell biomass, carried out in a brick reactor at a relatively low temperature of 300–500°C, successfully produced a biochar-derived adsorbent with 308 m ² /g surface area, 2 nm pore diameter, and 0.15 cm ³ /g total pore volume. The coconut shell biochar qualifies as a nano-adsorbent, supported by s...

A double insulated carbonisation-activation reactor was developed in order to produce activated carbon with high yield and surface area. This reactor was double insulated using low cement castable and covered around the internal space of the reactor with stainless steel plated and fibre glass jacketed heat insulation layer, which allow efficient he...

The building industry has a significant impact on the environment due to massive natural resources and energy it uses throughout its life cycle. This study presents a life cycle assessment of a semi-detached residential building in Malaysia as a case study and assesses the environmental impact under cradle-to-grave which consists of pre-use, constr...

An appropriate technology for waste utilisation, especially for a large amount of abundant pressed-shredded oil palm empty fruit bunch (OFEFB), is important for the oil palm industry. Self-sustained pyrolysis, whereby oil palm biomass was combusted by itself to provide the heat for pyrolysis without an electrical heater, is more preferable owing to...

Microalgae have gained as a sustainable and renewable biomass feedstock with high lipid content to produce alternative biofuels in future. This paper describes a process for producing biodiesel from microalgae grown low salinity water. Both microalgae species known as Tetraspora sp., Spirogyra sp were collected from Sungai Sura, Dungun, Malaysia at...

Microalgae have gained as a sustainable and renewable biomass feedstock with high lipid content to produce alternative biofuels in future. This paper describes a process for producing biodiesel from microalgae grown low salinity water. Both microalgae species known as Tetraspora sp., Spirogyra sp were collected from Sungai Sura, Dungun, Malaysia at...

Balanced nutrient elements in fertilizer play a critical role in oil palm seedling successful growth and development, and at the same time reduces of fertilizer losses in the environment. This study examines the effect of different levels of N, P 2 O 5 and K 2 O for oil palm seedlings in solution culture on growth traits, nutrient uptake in plant t...

Charcoal production with higher heating value (HHV) requires high capital investment and high energy requirement for large scale production. In this study, charcoal production under self-sustained carbonization from oil palm biomass was proposed and tested at pilot scale, whereby temperature and exhaust gas flow rate were monitored but not controll...

Carbonization of oil palm empty fruit bunch (OPEFB) biomass for the production of high mineral content biochar under an uncontrolled carbonization temperature and controlled air flow rate was studied using a pilot-scale brick carbonization reactor. The maximum temperature during the carbonization process was found to be in the range of 543 to 564 o...

A major problem facing the palm oil industry is the need to use fresh river water for processing which leads to the discharge of treated palm oil mill effluent (POME) to the river daily. In this paper, we propose a practical solution using activated carbon and selected coagulants for the zero emission of POME final discharge, using river water qual...

Ammonia stripping is a simple desorption process used to reduce ammonia content in wastewater stream. It is often easier and less expensive to remove nitrogen from wastewater in the form of ammonia rather than to convert it to nitrate-nitrogen before discharged to environment. The main objective of this study is to evaluate the ability of the sewag...

The effectiveness of banana stem juice as a natural coagulant for treatment of spent coolant wastewater was investigated . Three main parameters were studied, namely, chemical oxygen demand (COD), suspended solids (SSs), and turbidity of effluent. Coagulation experiments using jar test were performed with a flocculation system where the effects of...

The effectiveness of dragon fruit foliage as a natural coagulant for treatment of concentrated latex effluent was investigated and compared with ferric sulfate, a chemical coagulant. Dragon fruit is a round and often red-colored fruit with scales-like texture and is native to south American countries which is also cultivated and heavily marketed in...

Paint is used as a means of protection to prevent surfaces from being corroded over time. This research is focused on the development of a Bio-based paint made from palm oil methyl ester (POME) which originated from crude palm oil (CPO). New formulation paint has been developed to protect the pipeline from corrosion thus reducing the cost of the op...

In this study, recovery of nickel from spent catalyst from palm oil hydrogenation process is carried out via extractive leaching process using sulfuric and hydrochloric acids. The effects of acid concentration, solid-liquid ratio, temperature and digestion time on the recovery (acid dissolution) process are investigated. It is found that sulfuric a...

The coagulation performance of dragon fruit to act as a natural coagulant was studied by the jar test. The study investigated the effect of coagulation treatment process on wastewater of latex concentrate industry. The study also compared different dosages and pH values of the coagulation processes. The results revealed high removal efficiencies of...

This study investigated the effect of coagulation process on wastewater from latex concentrate industry. The coagulation performances of dragon fruit's foliage which was a newly invented plant based coagulant and commercial coagulants such as alum, ferric chloride, polyaluminium chloride, magnesium chloride, ferrous sulfate, ferric sulfate and calc...