Yusoff Mohd Suffian

Yusoff Mohd Suffian
Universiti Sains Malaysia | USM · School of Civil Engineering

Professor

About

173
Publications
103,290
Reads
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3,963
Citations
Additional affiliations
April 2007 - March 2021
Universiti Sains Malaysia
Position
  • Professor
Description
  • Deputy Head of Solid Waste Management Cluster (SWAM@USM) Science and Engineering Research Center. Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, MALAYSIA

Publications

Publications (173)
Chapter
Vermicomposting is a novel municipal/agricultural sludge and solid waste treatment process that uses earthworms (oligochaete annelids) for the biodegradation of the sludge and/or organic solid wastes, such as agricultural and food wastes. This novel biological system is alternately called earthworm conversion, vermicomposting, vermistabilization, w...
Chapter
Tourism can generate a lot of opportunities and income, but it also has a lot of negative environmental and health consequences. The production of municipal solid waste and wastewater is one of the most significant impacts on the environment, economy, and finances. A variety of waste sources have been identified, and it is important to understand w...
Article
Full-text available
Old leachate normally has a low organic compound content, poor biodegradability and is hard to biologically treat. The efficacy of tetravalent metal salts as a coagulant and the application of a natural coagulant as a flocculant in landfill leachate treatment is still inconclusive. Hence, this study aimed to evaluate the potential application of ti...
Chapter
Solid waste management (SWM) has always been an integral feature of every human society and has become a growing global concern as urban populations continue to grow as well as consumption patterns change. The health and environmental consequences of SWM are becoming increasingly urgent, particularly in developing countries. In this sense, sustaina...
Chapter
Shifting toward a circular economy has obtained huge attention from countries all over the world as a sustainable route to reduce the mounting volumes of solid waste, which has a direct link with today’s economy. Recently, the single-stream recycling technique has obtained sufficient interest. In this recycling technique, all the recyclable materia...
Article
Full-text available
Tin tetrachloride (SnCl4) as a coagulant and rubber seed (Hevea brasiliensis) (RS), and polyacrylamide (PAM) as the coagulant aid were investigated in this work to treat matured and stabilised landfill leachate rich in COD and colour. A standard jar test was conducted at different pH values and dosages of coagulant/coagulant aid. When SnCl4 acted a...
Preprint
Full-text available
Coffee processing wastewater (CPW) is a highly polluted industrial wastewater that can be detrimental to the environment when it is discharged into a watercourse without treatment. The present study looks at the performance of a strong acid cation exchange resin and a strong base anion exchange on the removal of chemical oxygen demand (COD), colour...
Article
Old landfill leachate is normally rich in colloidal particles, has low organic compound, poor biodegradability and hard to be biologically treated. The suspended particles are generally dispersed, negatively charged and do not settle by gravity due to their instability and repulsion. This paper aimed to evaluate the effectiveness of SnCl4 as a posi...
Chapter
The rapid fiscal growth of any nation has caused an increase in population, urbanization, and industrialization, thus leading to high generation of Municipal Solid Waste (MSW). Due to its complex properties and composition, MSW often produces a by‐product known as leachate, high‐strength wastewater which may become a major contribution to water pol...
Article
Full-text available
Constructed wetland as one of technique in phytoremediation, combined and utilized green plants, soil and microorganism in reducing the pollutants in wastewater. Plant selection and types of a substrate are among the factors that contribute to the greater performance of pollutant removal. Gravel and sand are the commonly substrate used in sub-surfa...
Article
The removal of concentrated colour (around 5039 Pt-Co) and chemical oxygen demand (COD; around 4142 mg L-1) from matured landfill leachate through a novel combination of humic acid extraction and coagulation with natural oil palm trunk starch (OPTS) was investigated in this study. Central composite design from response surface methodology of Design...
Article
Full-text available
The process of coagulation-flocculation using Dioscorea hispida starch as a natural coagulant was investigated for the purification of textile effluent from several dyeing and finishing mills. The major parameters tested were COD, turbidity, and color. Prior to conducting the experiments, the general physical characteristics of Dioscorea hispida st...
Article
A massive quantity of Elaeis guineensis (oil palm) trunk biomass, containing a significant amount of natural starch, is available in Malaysia as bio-waste because of annual replantation. The efficient extraction of this starch (carbohydrate polymer) would be worthwhile concerning the environmental sustainability and economy through conversion to bi...
Article
Novel single hybrid treatment of continuous clinoptilolite augmented electrocoagulation method integrated with a sequencing batch reactor (SBR) process was introduced to remove highly concentrated ammoniacal nitrogen (NH3-N) and colour in landfill leachate. First, the crystalline structures of the clinoptilolite were characterised via BET, XRD and...
Article
Full-text available
This study examines the applicability of Oil Palm Frond based activated carbon (OPF-AC) as an adsorbent for the treatment of landfill leachate. OPF-AC was prepared by mixing the OPF granular with a mixture solution composed of distilled water and zinc chloride (ZnCl2) at different ratios. Batch experiment studies were carried out to investigate the...
Article
This study investigated the effectiveness of batch electrocoagulation with vibration-induced electrode plates in enhancing the role of gas bubbles in the removal of ammoniacal nitrogen (NH3-N) from landfill leachate. The experimental setup, which consisted of an electrocoagulation reactor and electrode plates attached to a vibrator motor and connec...
Chapter
Development in the economy, urbanization, and industrialization has resulted in an increase in the amount and variety of solid waste. Ineffective and inefficient waste management may cause greenhouse gas and toxic emissions, as well as the loss of valuable materials and services, in addition to negative health effects and increased pollution of the...
Chapter
The rapid urbanization and industrial production led to increasing the amount of municipal and industrial solid waste generation. Among the different waste management practices, disposal of solid waste in landfills and open dumpsite ‘landfilling’ is considered the most common method, especially in developing countries, for the disposal of waste. Al...
Chapter
The law and institutional structure provide the basis for formulating a policy framework aimed at improving the future practice for solid waste management (SWM). SWM has recently become a worldwide concern for metropolitan environments, which could have a negative impact on the economy. The authors have reviewed many regulations, which applied in m...
Chapter
As part of the transformation to achieve sustainable resource recovery and waste management, landfills play an important role. The landfill’s primary function is to accept solid wastes that cannot be “avoided, reduced, reused, recycled, or recovered.” Recognizing that residual waste composition has changed and will continue to evolve over time in r...
Chapter
Various composting processes have gained a lot of attention in recent years because of pollution concerns and the need of environmentally sound technologies for handling and disposal of municipal and agricultural solid wastes. Composting is extremely significant in terms of its economic viability, ease of operation, ability to recycle nutrients, an...
Article
In most of electrocoagulation processes, the efficiency in removing pollutant is not just dependent on anode oxidation but is also determined by the action of gas bubbles produced during the treatment. The bubbles formation and bubbles rise velocities are important especially in electrochemical treatment for which generated gas bubbles improved the...
Article
Full-text available
This paper investigates the removal efficiency of textile wastewater using electrolysis process by carbon electrodes. The performance of COD, turbidity, and color reductions was evaluated under different conditions of pH, voltage usage, and distance between electrodes. The optimum conditions were determined, and the size of the flocs using these co...
Article
The high‐strength leachate produced from sanitary landfill is a serious issue around the world as it poses adverse effects on aquatic life and human health. Physio‐chemical technology is one of the promising options as the leachate normally presents in stabilized form and not fully amendable by biological treatment. In this research, the effectiven...
Conference Paper
Full-text available
Semi-aerobic landfills become the preferred solution worldwide and expected to remain as future routes of exponentially increasing solid waste disposal. But Landfills emitted leachate, which is liquid residue with extreme pH, BOD, COD, NH3−N, refractory compounds, and toxicity could be an impending source of contamination through percolation to sub...
Preprint
Full-text available
Malaysia is the 2nd largest in palm oil export, and after overcoming economic age (average 25 years), the palm oil trees entail to replace usually. Therefore, a massive quantity of palm oil trunk biomass, containing a significant amount of starch, is available as bio-waste annually. The efficient extraction of this starch (carbohydrate polymer) wou...
Article
In electrocoagulation, the accumulation of gas bubbles surrounding the electrode plate surface results in high internal resistance between the electrode plates that obstruct optimum ionic transfer, subsequently reducing the electrocoagulation efficiency. This study investigated the performance of batch electrocoagulation designed with vibration-ind...
Article
Full-text available
This work examined the behavior of a novel zeolite augmented on the electrocoagulation process (ZAEP) using an aluminum electrode in the removal of high-strength concentration ammonia (3471 mg/L) from landfill leachate which was saline (15.36 ppt) in nature. For this, a response surfaces methodology (RSM) through central composite designs (CCD) was...
Chapter
This research focuses on the application of activated carbon made from oil palm frond (OPF) to treat landfill leachate. The studies were performed in batches to investigate the effect of adsorbent dosage and contact time in removing COD, color, and iron (Fe) from Pulau Burung Sanitary Landfill (PBSL) leachate. Significant parameters such as COD, co...
Chapter
Landfilling is broadly recognized as a proper waste disposal method. Although ranked at the bottom of sustainable waste management hierarchy, final waste disposal technologies like sanitary landfill remain crucial for development country due to increasing waste generation. Since landfill is a permanent disposal site that could cause serious environ...
Chapter
Landfilling is broadly recognized as a proper waste disposal method. Although ranked at the bottom of sustainable waste management hierarchy, final waste disposal technologies like sanitary landfill remain crucial for development country due to increasing waste generation. Since landfill is a permanent disposal site that could cause serious environ...
Article
Full-text available
The high demand in developing countries has generated a large amount of municipal solid waste (MSW), which has increased the number of sanitary landfills and dumping sites. MSW has been the key to producing raw landfill leachate (LFL). A high amount of organic and inorganic compounds that exist in LFL cause several contaminations to the surface and...
Conference Paper
Full-text available
The existence of humic substances is the key factor for antagonistic coloration of stabilized landfill leachate, which is a remarkable pollutant parameter. To examine the performance of natural starch from oil palm trunk (OPTS) like a coagulant is the focus of the current study, for the removal of color through coagulation-flocculation followed by...
Conference Paper
Food waste is the highest percentage that was disposed in landfills. This caused difficulty in management of food waste and reduces the lifespan of a landfill. The objectives of this study are to determine the food waste generation and composition study at Ani’s Cafe, Bakti Permai Cafetria USM; to determine the characteristics of food waste before...
Conference Paper
Full-text available
Palm oil mill effluent (POME) from crude palm oil extraction process imposed a serious environmental threat to the nearby water resources due to high solid and organic concentration. Constructed wetland treatment systems (CWTS) has been identified as an ideal alternative solution to the POME treatment in order to comply with the regulation concern...
Article
Full-text available
Electrocoagulation (EC) has now become a popular choice in wastewater treatment owing to its easy operation, low sludge production and small quantity of chemicals used. Electrocoagulation is an electrochemical method that involves the release of active coagulant precursors (usually aluminium or iron cations) from corroded sacrificial anodes in a so...
Article
Full-text available
Landfill leachate is highly polluted wastewater and generated as a result of water infiltration through solid waste produced domestically and industrially. This study investigates the potential use of oil palm trunk starch (OPTS) and crosslinks oil palm trunk starch (C-OPTS) as coagulant and coagulant aid in tandem with polyaluminum chloride (PAC)...
Article
Phytoremediation approach attains more attention recently due to the sustainable and green technology requirement with the utilisation of various aquatic macrophytes in effluent treatment. The phytoremediation potential of Cyperus alternifolius, also known as umbrella sedge, was studied using different sources and concentrations of palm oil mill ef...
Article
Efficient and sound waste management in developing country like Malaysia requires reliable data on solid waste generation and composition. At present there is no data available on municipal solid waste (MSW) generation and composition retained at major districts in Kelantan. It has caused severe difficulty in decision making for comparability and a...
Article
The characteristics of Durio Zibethinus seed starch (DSS) that is used for landfill leachate treatment was investigated in this study. The DSS was extracted using dry milling (DM-DSS) and wet milling (WM-DSS) methods. The physico-chemical properties and surface morphology of the extracted starches were examined and analysed. Besides that, the effic...
Article
Full-text available
Stabilized landfill leachate often contains higher organic fractions than the young one. The organics require several sequential treatments to render the leachate parameters concentrations to permissible discharge limits before being discharged to receiving water. This study focused on the application of Zinc Sulphate (ZnSO4) as coagulant agent fol...
Article
Full-text available
This study investigated the behavior and mechanisms of cross-linked Durio zibethinus seed starch (CDSS) flocculants for landfill leachate treatment. A physical-chemical treatment method of coagulation-flocculation process and starch modification were implemented in treating stabilized leachate from Matang Landfill, Perak, Malaysia. In practical, th...
Article
Full-text available
Chemical oxygen demand(COD) was the main characteristic in analyzed the quality of wastewater and leachate. Soluble COD(SCOD) and particulate COD(PCOD) previously determined by physico-chemical methods such as i) coagulation-flocculation ii) filtration. These meth-ods widely used in wastewater treatment. However, research on COD fraction for leacha...
Article
Full-text available
Currently, generation of solid waste per capita in Malaysia is about 1.1 kg/day. Over 26,500 t of solid waste is disposed almost solely through 166 operating landfills in the country every day. Despite the availability of other disposal methods, landfill is the most widely accepted and prevalent method for municipal solid waste (MSW) disposal in de...
Conference Paper
High loading of wastewater and surface run off into river contributed to large amount of microorganisms entering drinking water sources. The aim of this study was to investigate the capability of composite adsorbent namely Zeliac to remove total coliform and E. coli from river water using fixed bed column experiment. Two ranges of Zeliac particle s...
Conference Paper
A study was conducted to investigate the efficiency of iron oxide nanoparticle (FeONPs) adsorption for removing of DOM in landfill leachate. FeONPs was directly prepared via sodium borohydride (KBH4) reduction method. Adsorption kinetics, isotherm and thermodynamic studies were developed to design the model for DOM removal. Pseudo first-order and p...
Conference Paper
Full-text available
In Malaysia, the municipal solid waste landfill site is an essential facility that needs to be evaluated as its demand is infrequently getting higher. The increment of waste generation forces the government to cater the appropriate site for waste disposal. However, the selection process for new landfill sites is a difficult task with regard to land...
Conference Paper
In this study electrocoagulation method is used to treat slaughterhouse wastewaters. The aim of this study is to determine the efficiency of electrocoagulation method for the removal of colour, turbidity, oil and grease of slaughterhouse wastewaters. The factors of electrode types, and voltage applied during treatment are the study parameters. The...
Conference Paper
Full-text available
Waste management and disposal issues one way or another need to be resolved correctly. Today, every developing country is facing the very common question of finding the best suitable site for a landfill. Relying on the technical factors alone would not solve the problem, but the best suitable sites for landfill need to consider the Not-In-My-Backya...
Conference Paper
In this study, chicken feather fiber was used as a raw material to prepare a non-expensive adsorbent by pyrolysis without chemical activation. The main pollutants treated in this study were chemical oxygen demand (COD) and ammoniacal nitrogen (NH3-N) from shrimp pond wastewater containing high concentrations of nutrients, which caused the eutrophic...
Conference Paper
Full-text available
Phytoremediation is an emerging technology nowadays due to demand in environmental sustainability which requires cost-effective solutions in terms of capital and operational cost. The treatment gain attention due to their potential in wastewater treatment especially in organics, nutrients, and heavy metal removal of domestics, agricultural, and ind...
Conference Paper
In this study, composite adsorbent was produced from the combination of activated carbon (AC) and calcite by four (4) different mixing ratios (AC:Calcite) of 9:1, 7:3, 1:1, 3:7, 1:9. The mixture was mixed with alginate as the binder. The composite adsorbent was tested in batch of experimental study to observe the effectiveness of removing COD and F...
Conference Paper
Full-text available
The purpose of this research is to analyse the biodegradability of leachate from Pulau Burung sanitary landfill (PBSL). PBSL is a semi-aerobic landfill which applies Fukuoka Method to reduce the amount of CH4 and enhance the stability of landfill compared to anaerobic types. This study compares two types of leachate, namely young and stabilized. In...
Conference Paper
Full-text available
There are many treatment processes over the world on river water. However, the simple and low cost technologies are quite limited. Therefore, the purpose of this study is to examine the turbidity, colour, pH, Total Dissolved Solid (TSS), Iron and Manganese from selected river water by a combination of activated carbon, limestone and polyvinyl alcoh...
Conference Paper
This study investigates the treatability of composite adsorbent made from waste materials and minerals which is widely available in Malaysia. The composite adsorbent was prepared based on wet attrition method which focuses on the determination of optimum dosage of each of raw materials amount by conventional design of experiment work. Zeolite, acti...
Conference Paper
In this research, the activated carbon prepared from tropical plant waste based Casuarinas Equisetifolia plant was activated through chemical activation by using potassium hydroxide (KOH) as the activating agent. The raw sample was carbonized following conventional heating via electric furnace at 600˚C with the increasing temperature 30˚C/minutes i...
Article
Textile wastewater often contains a mix of chemicals, solvents and additives which require numerous physical and chemical treatment methods that tolerate a wide range of pollutants. The application of adsorption treatment for textile wastewater has been studied for years. However, there is very limited data available on the development of eco-frien...